ConnectivityService.java revision 4064af844ca6e58dc2908525634c13c4be277eac
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.NetworkCallbacks; 24import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 25import static android.net.ConnectivityManager.TYPE_DUMMY; 26import static android.net.ConnectivityManager.TYPE_ETHERNET; 27import static android.net.ConnectivityManager.TYPE_MOBILE; 28import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 29import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 30import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 31import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 32import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 33import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 34import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 35import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 36import static android.net.ConnectivityManager.TYPE_NONE; 37import static android.net.ConnectivityManager.TYPE_WIFI; 38import static android.net.ConnectivityManager.TYPE_WIMAX; 39import static android.net.ConnectivityManager.TYPE_PROXY; 40import static android.net.ConnectivityManager.getNetworkTypeName; 41import static android.net.ConnectivityManager.isNetworkTypeValid; 42import static android.net.ConnectivityServiceProtocol.NetworkFactoryProtocol; 43import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 44import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 45 46import android.app.AlarmManager; 47import android.app.AppOpsManager; 48import android.app.Notification; 49import android.app.NotificationManager; 50import android.app.PendingIntent; 51import android.bluetooth.BluetoothTetheringDataTracker; 52import android.content.ActivityNotFoundException; 53import android.content.BroadcastReceiver; 54import android.content.ContentResolver; 55import android.content.Context; 56import android.content.ContextWrapper; 57import android.content.Intent; 58import android.content.IntentFilter; 59import android.content.pm.ApplicationInfo; 60import android.content.pm.PackageManager; 61import android.content.pm.PackageManager.NameNotFoundException; 62import android.content.res.Configuration; 63import android.content.res.Resources; 64import android.database.ContentObserver; 65import android.net.CaptivePortalTracker; 66import android.net.ConnectivityManager; 67import android.net.DummyDataStateTracker; 68import android.net.EthernetDataTracker; 69import android.net.IConnectivityManager; 70import android.net.INetworkManagementEventObserver; 71import android.net.INetworkPolicyListener; 72import android.net.INetworkPolicyManager; 73import android.net.INetworkStatsService; 74import android.net.LinkAddress; 75import android.net.LinkProperties; 76import android.net.LinkProperties.CompareResult; 77import android.net.LinkQualityInfo; 78import android.net.MobileDataStateTracker; 79import android.net.Network; 80import android.net.NetworkAgent; 81import android.net.NetworkCapabilities; 82import android.net.NetworkConfig; 83import android.net.NetworkInfo; 84import android.net.NetworkInfo.DetailedState; 85import android.net.NetworkQuotaInfo; 86import android.net.NetworkRequest; 87import android.net.NetworkState; 88import android.net.NetworkStateTracker; 89import android.net.NetworkUtils; 90import android.net.Proxy; 91import android.net.ProxyDataTracker; 92import android.net.ProxyInfo; 93import android.net.RouteInfo; 94import android.net.SamplingDataTracker; 95import android.net.Uri; 96import android.net.wimax.WimaxManagerConstants; 97import android.os.AsyncTask; 98import android.os.Binder; 99import android.os.Build; 100import android.os.FileUtils; 101import android.os.Handler; 102import android.os.HandlerThread; 103import android.os.IBinder; 104import android.os.INetworkManagementService; 105import android.os.Looper; 106import android.os.Message; 107import android.os.Messenger; 108import android.os.ParcelFileDescriptor; 109import android.os.PowerManager; 110import android.os.Process; 111import android.os.RemoteException; 112import android.os.ServiceManager; 113import android.os.SystemClock; 114import android.os.SystemProperties; 115import android.os.UserHandle; 116import android.provider.Settings; 117import android.security.Credentials; 118import android.security.KeyStore; 119import android.telephony.TelephonyManager; 120import android.text.TextUtils; 121import android.util.Slog; 122import android.util.SparseArray; 123import android.util.SparseIntArray; 124import android.util.Xml; 125 126import com.android.internal.R; 127import com.android.internal.annotations.GuardedBy; 128import com.android.internal.net.LegacyVpnInfo; 129import com.android.internal.net.VpnConfig; 130import com.android.internal.net.VpnProfile; 131import com.android.internal.telephony.DctConstants; 132import com.android.internal.telephony.Phone; 133import com.android.internal.telephony.PhoneConstants; 134import com.android.internal.telephony.TelephonyIntents; 135import com.android.internal.util.AsyncChannel; 136import com.android.internal.util.IndentingPrintWriter; 137import com.android.internal.util.XmlUtils; 138import com.android.server.am.BatteryStatsService; 139import com.android.server.connectivity.DataConnectionStats; 140import com.android.server.connectivity.Nat464Xlat; 141import com.android.server.connectivity.NetworkAgentInfo; 142import com.android.server.connectivity.NetworkMonitor; 143import com.android.server.connectivity.PacManager; 144import com.android.server.connectivity.Tethering; 145import com.android.server.connectivity.Vpn; 146import com.android.server.net.BaseNetworkObserver; 147import com.android.server.net.LockdownVpnTracker; 148import com.google.android.collect.Lists; 149import com.google.android.collect.Sets; 150 151import dalvik.system.DexClassLoader; 152 153import org.xmlpull.v1.XmlPullParser; 154import org.xmlpull.v1.XmlPullParserException; 155 156import java.io.File; 157import java.io.FileDescriptor; 158import java.io.FileNotFoundException; 159import java.io.FileReader; 160import java.io.IOException; 161import java.io.PrintWriter; 162import java.lang.reflect.Constructor; 163import java.net.HttpURLConnection; 164import java.net.Inet4Address; 165import java.net.Inet6Address; 166import java.net.InetAddress; 167import java.net.URL; 168import java.net.UnknownHostException; 169import java.util.ArrayList; 170import java.util.Arrays; 171import java.util.Collection; 172import java.util.GregorianCalendar; 173import java.util.HashMap; 174import java.util.HashSet; 175import java.util.List; 176import java.util.Map; 177import java.util.Random; 178import java.util.concurrent.atomic.AtomicBoolean; 179import java.util.concurrent.atomic.AtomicInteger; 180 181import javax.net.ssl.HostnameVerifier; 182import javax.net.ssl.HttpsURLConnection; 183import javax.net.ssl.SSLSession; 184 185import static android.net.ConnectivityManager.INVALID_NET_ID; 186 187/** 188 * @hide 189 */ 190public class ConnectivityService extends IConnectivityManager.Stub { 191 private static final String TAG = "ConnectivityService"; 192 193 private static final boolean DBG = true; 194 private static final boolean VDBG = true; // STOPSHIP 195 196 private static final boolean LOGD_RULES = false; 197 198 // TODO: create better separation between radio types and network types 199 200 // how long to wait before switching back to a radio's default network 201 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 202 // system property that can override the above value 203 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 204 "android.telephony.apn-restore"; 205 206 // Default value if FAIL_FAST_TIME_MS is not set 207 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 208 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 209 private static final String FAIL_FAST_TIME_MS = 210 "persist.radio.fail_fast_time_ms"; 211 212 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 213 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 214 215 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 216 217 private PendingIntent mSampleIntervalElapsedIntent; 218 219 // Set network sampling interval at 12 minutes, this way, even if the timers get 220 // aggregated, it will fire at around 15 minutes, which should allow us to 221 // aggregate this timer with other timers (specially the socket keep alive timers) 222 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 12 * 60); 223 224 // start network sampling a minute after booting ... 225 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 60); 226 227 AlarmManager mAlarmManager; 228 229 // used in recursive route setting to add gateways for the host for which 230 // a host route was requested. 231 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 232 233 private Tethering mTethering; 234 235 private KeyStore mKeyStore; 236 237 @GuardedBy("mVpns") 238 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 239 private VpnCallback mVpnCallback = new VpnCallback(); 240 241 private boolean mLockdownEnabled; 242 private LockdownVpnTracker mLockdownTracker; 243 244 private Nat464Xlat mClat; 245 246 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 247 private Object mRulesLock = new Object(); 248 /** Currently active network rules by UID. */ 249 private SparseIntArray mUidRules = new SparseIntArray(); 250 /** Set of ifaces that are costly. */ 251 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 252 253 /** 254 * Sometimes we want to refer to the individual network state 255 * trackers separately, and sometimes we just want to treat them 256 * abstractly. 257 */ 258 private NetworkStateTracker mNetTrackers[]; 259 260 /** 261 * Holds references to all NetworkAgentInfos claiming to support the legacy 262 * NetworkType. We used to have a static set of of NetworkStateTrackers 263 * for each network type. This is the new model. 264 * Supports synchronous inspection of state. 265 * These are built out at startup such that an unsupported network 266 * doesn't get an ArrayList instance, making this a tristate: 267 * unsupported, supported but not active and active. 268 */ 269 private ArrayList<NetworkAgentInfo> mNetworkAgentInfoForType[]; 270 271 /* Handles captive portal check on a network */ 272 private CaptivePortalTracker mCaptivePortalTracker; 273 274 /** 275 * The link properties that define the current links 276 */ 277 private LinkProperties mCurrentLinkProperties[]; 278 279 /** 280 * A per Net list of the PID's that requested access to the net 281 * used both as a refcount and for per-PID DNS selection 282 */ 283 private List<Integer> mNetRequestersPids[]; 284 285 // priority order of the nettrackers 286 // (excluding dynamically set mNetworkPreference) 287 // TODO - move mNetworkTypePreference into this 288 private int[] mPriorityList; 289 290 private Context mContext; 291 private int mNetworkPreference; 292 private int mActiveDefaultNetwork = -1; 293 // 0 is full bad, 100 is full good 294 private int mDefaultInetCondition = 0; 295 private int mDefaultInetConditionPublished = 0; 296 private boolean mInetConditionChangeInFlight = false; 297 private int mDefaultConnectionSequence = 0; 298 299 private Object mDnsLock = new Object(); 300 private int mNumDnsEntries; 301 302 private boolean mTestMode; 303 private static ConnectivityService sServiceInstance; 304 305 private INetworkManagementService mNetd; 306 private INetworkPolicyManager mPolicyManager; 307 308 private static final int ENABLED = 1; 309 private static final int DISABLED = 0; 310 311 private static final boolean ADD = true; 312 private static final boolean REMOVE = false; 313 314 private static final boolean TO_DEFAULT_TABLE = true; 315 private static final boolean TO_SECONDARY_TABLE = false; 316 317 private static final boolean EXEMPT = true; 318 private static final boolean UNEXEMPT = false; 319 320 /** 321 * used internally as a delayed event to make us switch back to the 322 * default network 323 */ 324 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 325 326 /** 327 * used internally to change our mobile data enabled flag 328 */ 329 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 330 331 /** 332 * used internally to synchronize inet condition reports 333 * arg1 = networkType 334 * arg2 = condition (0 bad, 100 good) 335 */ 336 private static final int EVENT_INET_CONDITION_CHANGE = 4; 337 338 /** 339 * used internally to mark the end of inet condition hold periods 340 * arg1 = networkType 341 */ 342 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 343 344 /** 345 * used internally to set enable/disable cellular data 346 * arg1 = ENBALED or DISABLED 347 */ 348 private static final int EVENT_SET_MOBILE_DATA = 7; 349 350 /** 351 * used internally to clear a wakelock when transitioning 352 * from one net to another 353 */ 354 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 355 356 /** 357 * used internally to reload global proxy settings 358 */ 359 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 360 361 /** 362 * used internally to set external dependency met/unmet 363 * arg1 = ENABLED (met) or DISABLED (unmet) 364 * arg2 = NetworkType 365 */ 366 private static final int EVENT_SET_DEPENDENCY_MET = 10; 367 368 /** 369 * used internally to send a sticky broadcast delayed. 370 */ 371 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 372 373 /** 374 * Used internally to 375 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 376 */ 377 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 378 379 private static final int EVENT_VPN_STATE_CHANGED = 13; 380 381 /** 382 * Used internally to disable fail fast of mobile data 383 */ 384 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 385 386 /** 387 * used internally to indicate that data sampling interval is up 388 */ 389 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 390 391 /** 392 * PAC manager has received new port. 393 */ 394 private static final int EVENT_PROXY_HAS_CHANGED = 16; 395 396 /** 397 * used internally when registering NetworkFactories 398 * obj = Messenger 399 */ 400 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 401 402 /** 403 * used internally when registering NetworkAgents 404 * obj = Messenger 405 */ 406 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 407 408 /** 409 * used to add a network request 410 * includes a NetworkRequestInfo 411 */ 412 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 413 414 /** 415 * indicates a timeout period is over - check if we had a network yet or not 416 * and if not, call the timeout calback (but leave the request live until they 417 * cancel it. 418 * includes a NetworkRequestInfo 419 */ 420 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 421 422 /** 423 * used to add a network listener - no request 424 * includes a NetworkRequestInfo 425 */ 426 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 427 428 /** 429 * used to remove a network request, either a listener or a real request 430 * includes a NetworkRequest 431 */ 432 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 433 434 /** Handler used for internal events. */ 435 final private InternalHandler mHandler; 436 /** Handler used for incoming {@link NetworkStateTracker} events. */ 437 final private NetworkStateTrackerHandler mTrackerHandler; 438 439 // list of DeathRecipients used to make sure features are turned off when 440 // a process dies 441 private List<FeatureUser> mFeatureUsers; 442 443 private boolean mSystemReady; 444 private Intent mInitialBroadcast; 445 446 private PowerManager.WakeLock mNetTransitionWakeLock; 447 private String mNetTransitionWakeLockCausedBy = ""; 448 private int mNetTransitionWakeLockSerialNumber; 449 private int mNetTransitionWakeLockTimeout; 450 451 private InetAddress mDefaultDns; 452 453 // Lock for protecting access to mAddedRoutes and mExemptAddresses 454 private final Object mRoutesLock = new Object(); 455 456 // this collection is used to refcount the added routes - if there are none left 457 // it's time to remove the route from the route table 458 @GuardedBy("mRoutesLock") 459 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 460 461 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 462 // used to handle cleanup of exempt rules 463 @GuardedBy("mRoutesLock") 464 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 465 466 // used in DBG mode to track inet condition reports 467 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 468 private ArrayList mInetLog; 469 470 // track the current default http proxy - tell the world if we get a new one (real change) 471 private ProxyInfo mDefaultProxy = null; 472 private Object mProxyLock = new Object(); 473 private boolean mDefaultProxyDisabled = false; 474 475 // track the global proxy. 476 private ProxyInfo mGlobalProxy = null; 477 478 private PacManager mPacManager = null; 479 480 private SettingsObserver mSettingsObserver; 481 482 private AppOpsManager mAppOpsManager; 483 484 NetworkConfig[] mNetConfigs; 485 int mNetworksDefined; 486 487 private static class RadioAttributes { 488 public int mSimultaneity; 489 public int mType; 490 public RadioAttributes(String init) { 491 String fragments[] = init.split(","); 492 mType = Integer.parseInt(fragments[0]); 493 mSimultaneity = Integer.parseInt(fragments[1]); 494 } 495 } 496 RadioAttributes[] mRadioAttributes; 497 498 // the set of network types that can only be enabled by system/sig apps 499 List mProtectedNetworks; 500 501 private DataConnectionStats mDataConnectionStats; 502 503 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 504 505 TelephonyManager mTelephonyManager; 506 507 private final static int MIN_NET_ID = 10; // some reserved marks 508 private final static int MAX_NET_ID = 65535; 509 private int mNextNetId = MIN_NET_ID; 510 511 public ConnectivityService(Context context, INetworkManagementService netd, 512 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 513 // Currently, omitting a NetworkFactory will create one internally 514 // TODO: create here when we have cleaner WiMAX support 515 this(context, netd, statsService, policyManager, null); 516 } 517 518 public ConnectivityService(Context context, INetworkManagementService netManager, 519 INetworkStatsService statsService, INetworkPolicyManager policyManager, 520 NetworkFactory netFactory) { 521 if (DBG) log("ConnectivityService starting up"); 522 523 NetworkCapabilities netCap = new NetworkCapabilities(); 524 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 525 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 526 mDefaultRequest = new NetworkRequest(netCap, true); 527 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 528 NetworkRequestInfo.REQUEST); 529 mNetworkRequests.put(mDefaultRequest, nri); 530 531 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 532 handlerThread.start(); 533 mHandler = new InternalHandler(handlerThread.getLooper()); 534 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 535 536 if (netFactory == null) { 537 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 538 } 539 540 // setup our unique device name 541 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 542 String id = Settings.Secure.getString(context.getContentResolver(), 543 Settings.Secure.ANDROID_ID); 544 if (id != null && id.length() > 0) { 545 String name = new String("android-").concat(id); 546 SystemProperties.set("net.hostname", name); 547 } 548 } 549 550 // read our default dns server ip 551 String dns = Settings.Global.getString(context.getContentResolver(), 552 Settings.Global.DEFAULT_DNS_SERVER); 553 if (dns == null || dns.length() == 0) { 554 dns = context.getResources().getString( 555 com.android.internal.R.string.config_default_dns_server); 556 } 557 try { 558 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 559 } catch (IllegalArgumentException e) { 560 loge("Error setting defaultDns using " + dns); 561 } 562 563 mContext = checkNotNull(context, "missing Context"); 564 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 565 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 566 mKeyStore = KeyStore.getInstance(); 567 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 568 569 try { 570 mPolicyManager.registerListener(mPolicyListener); 571 } catch (RemoteException e) { 572 // ouch, no rules updates means some processes may never get network 573 loge("unable to register INetworkPolicyListener" + e.toString()); 574 } 575 576 final PowerManager powerManager = (PowerManager) context.getSystemService( 577 Context.POWER_SERVICE); 578 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 579 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 580 com.android.internal.R.integer.config_networkTransitionTimeout); 581 582 mNetworkAgentInfoForType = (ArrayList<NetworkAgentInfo>[]) 583 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 584 585 mNetTrackers = new NetworkStateTracker[ 586 ConnectivityManager.MAX_NETWORK_TYPE+1]; 587 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 588 589 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 590 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 591 592 // Load device network attributes from resources 593 String[] raStrings = context.getResources().getStringArray( 594 com.android.internal.R.array.radioAttributes); 595 for (String raString : raStrings) { 596 RadioAttributes r = new RadioAttributes(raString); 597 if (VDBG) log("raString=" + raString + " r=" + r); 598 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 599 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 600 continue; 601 } 602 if (mRadioAttributes[r.mType] != null) { 603 loge("Error in radioAttributes - ignoring attempt to redefine type " + 604 r.mType); 605 continue; 606 } 607 mRadioAttributes[r.mType] = r; 608 } 609 610 // TODO: What is the "correct" way to do determine if this is a wifi only device? 611 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 612 log("wifiOnly=" + wifiOnly); 613 String[] naStrings = context.getResources().getStringArray( 614 com.android.internal.R.array.networkAttributes); 615 for (String naString : naStrings) { 616 try { 617 NetworkConfig n = new NetworkConfig(naString); 618 if (VDBG) log("naString=" + naString + " config=" + n); 619 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 620 loge("Error in networkAttributes - ignoring attempt to define type " + 621 n.type); 622 continue; 623 } 624 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 625 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 626 n.type); 627 continue; 628 } 629 if (mNetConfigs[n.type] != null) { 630 loge("Error in networkAttributes - ignoring attempt to redefine type " + 631 n.type); 632 continue; 633 } 634 if (mRadioAttributes[n.radio] == null) { 635 loge("Error in networkAttributes - ignoring attempt to use undefined " + 636 "radio " + n.radio + " in network type " + n.type); 637 continue; 638 } 639 mNetworkAgentInfoForType[n.type] = new ArrayList<NetworkAgentInfo>(); 640 641 mNetConfigs[n.type] = n; 642 mNetworksDefined++; 643 } catch(Exception e) { 644 // ignore it - leave the entry null 645 } 646 } 647 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 648 649 mProtectedNetworks = new ArrayList<Integer>(); 650 int[] protectedNetworks = context.getResources().getIntArray( 651 com.android.internal.R.array.config_protectedNetworks); 652 for (int p : protectedNetworks) { 653 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 654 mProtectedNetworks.add(p); 655 } else { 656 if (DBG) loge("Ignoring protectedNetwork " + p); 657 } 658 } 659 660 // high priority first 661 mPriorityList = new int[mNetworksDefined]; 662 { 663 int insertionPoint = mNetworksDefined-1; 664 int currentLowest = 0; 665 int nextLowest = 0; 666 while (insertionPoint > -1) { 667 for (NetworkConfig na : mNetConfigs) { 668 if (na == null) continue; 669 if (na.priority < currentLowest) continue; 670 if (na.priority > currentLowest) { 671 if (na.priority < nextLowest || nextLowest == 0) { 672 nextLowest = na.priority; 673 } 674 continue; 675 } 676 mPriorityList[insertionPoint--] = na.type; 677 } 678 currentLowest = nextLowest; 679 nextLowest = 0; 680 } 681 } 682 683 mNetRequestersPids = 684 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 685 for (int i : mPriorityList) { 686 mNetRequestersPids[i] = new ArrayList<Integer>(); 687 } 688 689 mFeatureUsers = new ArrayList<FeatureUser>(); 690 691 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 692 && SystemProperties.get("ro.build.type").equals("eng"); 693 694 // Create and start trackers for hard-coded networks 695 for (int targetNetworkType : mPriorityList) { 696 final NetworkConfig config = mNetConfigs[targetNetworkType]; 697 final NetworkStateTracker tracker; 698 try { 699 tracker = netFactory.createTracker(targetNetworkType, config); 700 mNetTrackers[targetNetworkType] = tracker; 701 } catch (IllegalArgumentException e) { 702 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 703 + " tracker: " + e); 704 continue; 705 } 706 707 tracker.startMonitoring(context, mTrackerHandler); 708 if (config.isDefault()) { 709 tracker.reconnect(); 710 } 711 } 712 713 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 714 715 //set up the listener for user state for creating user VPNs 716 IntentFilter intentFilter = new IntentFilter(); 717 intentFilter.addAction(Intent.ACTION_USER_STARTING); 718 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 719 mContext.registerReceiverAsUser( 720 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 721 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 722 723 try { 724 mNetd.registerObserver(mTethering); 725 mNetd.registerObserver(mDataActivityObserver); 726 mNetd.registerObserver(mClat); 727 } catch (RemoteException e) { 728 loge("Error registering observer :" + e); 729 } 730 731 if (DBG) { 732 mInetLog = new ArrayList(); 733 } 734 735 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 736 mSettingsObserver.observe(mContext); 737 738 mDataConnectionStats = new DataConnectionStats(mContext); 739 mDataConnectionStats.startMonitoring(); 740 741 // start network sampling .. 742 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 743 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 744 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 745 746 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 747 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 748 749 IntentFilter filter = new IntentFilter(); 750 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 751 mContext.registerReceiver( 752 new BroadcastReceiver() { 753 @Override 754 public void onReceive(Context context, Intent intent) { 755 String action = intent.getAction(); 756 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 757 mHandler.sendMessage(mHandler.obtainMessage 758 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 759 } 760 } 761 }, 762 new IntentFilter(filter)); 763 764 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 765 766 filter = new IntentFilter(); 767 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 768 mContext.registerReceiver(mProvisioningReceiver, filter); 769 770 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 771 } 772 773 private synchronized int nextNetId() { 774 int netId = mNextNetId; 775 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 776 return netId; 777 } 778 779 /** 780 * Factory that creates {@link NetworkStateTracker} instances using given 781 * {@link NetworkConfig}. 782 * 783 * TODO - this is obsolete and will be deleted. It's replaced by the 784 * registerNetworkFactory call and protocol. 785 * @Deprecated in favor of registerNetworkFactory dynamic bindings 786 */ 787 public interface NetworkFactory { 788 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 789 } 790 791 private static class DefaultNetworkFactory implements NetworkFactory { 792 private final Context mContext; 793 private final Handler mTrackerHandler; 794 795 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 796 mContext = context; 797 mTrackerHandler = trackerHandler; 798 } 799 800 @Override 801 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 802 switch (config.radio) { 803 case TYPE_DUMMY: 804 return new DummyDataStateTracker(targetNetworkType, config.name); 805 case TYPE_BLUETOOTH: 806 return BluetoothTetheringDataTracker.getInstance(); 807 case TYPE_WIMAX: 808 return makeWimaxStateTracker(mContext, mTrackerHandler); 809 case TYPE_ETHERNET: 810 return EthernetDataTracker.getInstance(); 811 case TYPE_PROXY: 812 return new ProxyDataTracker(); 813 default: 814 throw new IllegalArgumentException( 815 "Trying to create a NetworkStateTracker for an unknown radio type: " 816 + config.radio); 817 } 818 } 819 } 820 821 /** 822 * Loads external WiMAX library and registers as system service, returning a 823 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 824 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 825 */ 826 private static NetworkStateTracker makeWimaxStateTracker( 827 Context context, Handler trackerHandler) { 828 // Initialize Wimax 829 DexClassLoader wimaxClassLoader; 830 Class wimaxStateTrackerClass = null; 831 Class wimaxServiceClass = null; 832 Class wimaxManagerClass; 833 String wimaxJarLocation; 834 String wimaxLibLocation; 835 String wimaxManagerClassName; 836 String wimaxServiceClassName; 837 String wimaxStateTrackerClassName; 838 839 NetworkStateTracker wimaxStateTracker = null; 840 841 boolean isWimaxEnabled = context.getResources().getBoolean( 842 com.android.internal.R.bool.config_wimaxEnabled); 843 844 if (isWimaxEnabled) { 845 try { 846 wimaxJarLocation = context.getResources().getString( 847 com.android.internal.R.string.config_wimaxServiceJarLocation); 848 wimaxLibLocation = context.getResources().getString( 849 com.android.internal.R.string.config_wimaxNativeLibLocation); 850 wimaxManagerClassName = context.getResources().getString( 851 com.android.internal.R.string.config_wimaxManagerClassname); 852 wimaxServiceClassName = context.getResources().getString( 853 com.android.internal.R.string.config_wimaxServiceClassname); 854 wimaxStateTrackerClassName = context.getResources().getString( 855 com.android.internal.R.string.config_wimaxStateTrackerClassname); 856 857 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 858 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 859 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 860 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 861 862 try { 863 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 864 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 865 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 866 } catch (ClassNotFoundException ex) { 867 loge("Exception finding Wimax classes: " + ex.toString()); 868 return null; 869 } 870 } catch(Resources.NotFoundException ex) { 871 loge("Wimax Resources does not exist!!! "); 872 return null; 873 } 874 875 try { 876 if (DBG) log("Starting Wimax Service... "); 877 878 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 879 (new Class[] {Context.class, Handler.class}); 880 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 881 context, trackerHandler); 882 883 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 884 (new Class[] {Context.class, wimaxStateTrackerClass}); 885 wmxSrvConst.setAccessible(true); 886 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 887 wmxSrvConst.setAccessible(false); 888 889 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 890 891 } catch(Exception ex) { 892 loge("Exception creating Wimax classes: " + ex.toString()); 893 return null; 894 } 895 } else { 896 loge("Wimax is not enabled or not added to the network attributes!!! "); 897 return null; 898 } 899 900 return wimaxStateTracker; 901 } 902 903 private int getConnectivityChangeDelay() { 904 final ContentResolver cr = mContext.getContentResolver(); 905 906 /** Check system properties for the default value then use secure settings value, if any. */ 907 int defaultDelay = SystemProperties.getInt( 908 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 909 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 910 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 911 defaultDelay); 912 } 913 914 private boolean teardown(NetworkStateTracker netTracker) { 915 if (netTracker.teardown()) { 916 netTracker.setTeardownRequested(true); 917 return true; 918 } else { 919 return false; 920 } 921 } 922 923 /** 924 * Check if UID should be blocked from using the network represented by the 925 * given {@link NetworkStateTracker}. 926 */ 927 private boolean isNetworkBlocked(int networkType, int uid) { 928 final boolean networkCostly; 929 final int uidRules; 930 931 LinkProperties lp = getLinkPropertiesForType(networkType); 932 final String iface = (lp == null ? "" : lp.getInterfaceName()); 933 synchronized (mRulesLock) { 934 networkCostly = mMeteredIfaces.contains(iface); 935 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 936 } 937 938 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 939 return true; 940 } 941 942 // no restrictive rules; network is visible 943 return false; 944 } 945 946 /** 947 * Return a filtered {@link NetworkInfo}, potentially marked 948 * {@link DetailedState#BLOCKED} based on 949 * {@link #isNetworkBlocked}. 950 */ 951 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 952 NetworkInfo info = getNetworkInfoForType(networkType); 953 if (isNetworkBlocked(networkType, uid)) { 954 // network is blocked; clone and override state 955 info = new NetworkInfo(info); 956 info.setDetailedState(DetailedState.BLOCKED, null, null); 957 } 958 if (mLockdownTracker != null) { 959 info = mLockdownTracker.augmentNetworkInfo(info); 960 } 961 return info; 962 } 963 964 /** 965 * Return NetworkInfo for the active (i.e., connected) network interface. 966 * It is assumed that at most one network is active at a time. If more 967 * than one is active, it is indeterminate which will be returned. 968 * @return the info for the active network, or {@code null} if none is 969 * active 970 */ 971 @Override 972 public NetworkInfo getActiveNetworkInfo() { 973 enforceAccessPermission(); 974 final int uid = Binder.getCallingUid(); 975 return getNetworkInfo(mActiveDefaultNetwork, uid); 976 } 977 978 // only called when the default request is satisfied 979 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 980 if (nai != null) { 981 mActiveDefaultNetwork = nai.networkInfo.getType(); 982 } else { 983 mActiveDefaultNetwork = TYPE_NONE; 984 } 985 } 986 987 /** 988 * Find the first Provisioning network. 989 * 990 * @return NetworkInfo or null if none. 991 */ 992 private NetworkInfo getProvisioningNetworkInfo() { 993 enforceAccessPermission(); 994 995 // Find the first Provisioning Network 996 NetworkInfo provNi = null; 997 for (NetworkInfo ni : getAllNetworkInfo()) { 998 if (ni.isConnectedToProvisioningNetwork()) { 999 provNi = ni; 1000 break; 1001 } 1002 } 1003 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1004 return provNi; 1005 } 1006 1007 /** 1008 * Find the first Provisioning network or the ActiveDefaultNetwork 1009 * if there is no Provisioning network 1010 * 1011 * @return NetworkInfo or null if none. 1012 */ 1013 @Override 1014 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1015 enforceAccessPermission(); 1016 1017 NetworkInfo provNi = getProvisioningNetworkInfo(); 1018 if (provNi == null) { 1019 final int uid = Binder.getCallingUid(); 1020 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1021 } 1022 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1023 return provNi; 1024 } 1025 1026 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1027 enforceAccessPermission(); 1028 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1029 return getNetworkInfoForType(mActiveDefaultNetwork); 1030 } 1031 return null; 1032 } 1033 1034 @Override 1035 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1036 enforceConnectivityInternalPermission(); 1037 return getNetworkInfo(mActiveDefaultNetwork, uid); 1038 } 1039 1040 @Override 1041 public NetworkInfo getNetworkInfo(int networkType) { 1042 enforceAccessPermission(); 1043 final int uid = Binder.getCallingUid(); 1044 return getNetworkInfo(networkType, uid); 1045 } 1046 1047 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1048 NetworkInfo info = null; 1049 if (isNetworkTypeValid(networkType)) { 1050 if (getNetworkInfoForType(networkType) != null) { 1051 info = getFilteredNetworkInfo(networkType, uid); 1052 } 1053 } 1054 return info; 1055 } 1056 1057 @Override 1058 public NetworkInfo[] getAllNetworkInfo() { 1059 enforceAccessPermission(); 1060 final int uid = Binder.getCallingUid(); 1061 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1062 synchronized (mRulesLock) { 1063 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1064 networkType++) { 1065 if (getNetworkInfoForType(networkType) != null) { 1066 result.add(getFilteredNetworkInfo(networkType, uid)); 1067 } 1068 } 1069 } 1070 return result.toArray(new NetworkInfo[result.size()]); 1071 } 1072 1073 @Override 1074 public boolean isNetworkSupported(int networkType) { 1075 enforceAccessPermission(); 1076 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1077 } 1078 1079 /** 1080 * Return LinkProperties for the active (i.e., connected) default 1081 * network interface. It is assumed that at most one default network 1082 * is active at a time. If more than one is active, it is indeterminate 1083 * which will be returned. 1084 * @return the ip properties for the active network, or {@code null} if 1085 * none is active 1086 */ 1087 @Override 1088 public LinkProperties getActiveLinkProperties() { 1089 return getLinkPropertiesForType(mActiveDefaultNetwork); 1090 } 1091 1092 @Override 1093 public LinkProperties getLinkPropertiesForType(int networkType) { 1094 enforceAccessPermission(); 1095 if (isNetworkTypeValid(networkType)) { 1096 return getLinkPropertiesForTypeInternal(networkType); 1097 } 1098 return null; 1099 } 1100 1101 // TODO - this should be ALL networks 1102 @Override 1103 public LinkProperties getLinkProperties(Network network) { 1104 enforceAccessPermission(); 1105 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1106 if (nai != null) return new LinkProperties(nai.linkProperties); 1107 return null; 1108 } 1109 1110 @Override 1111 public NetworkCapabilities getNetworkCapabilities(Network network) { 1112 enforceAccessPermission(); 1113 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1114 if (nai != null) return new NetworkCapabilities(nai.networkCapabilities); 1115 return null; 1116 } 1117 1118 @Override 1119 public NetworkState[] getAllNetworkState() { 1120 enforceAccessPermission(); 1121 final int uid = Binder.getCallingUid(); 1122 final ArrayList<NetworkState> result = Lists.newArrayList(); 1123 synchronized (mRulesLock) { 1124 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1125 networkType++) { 1126 if (getNetworkInfoForType(networkType) != null) { 1127 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1128 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1129 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1130 result.add(new NetworkState(info, lp, netcap)); 1131 } 1132 } 1133 } 1134 return result.toArray(new NetworkState[result.size()]); 1135 } 1136 1137 private NetworkState getNetworkStateUnchecked(int networkType) { 1138 if (isNetworkTypeValid(networkType)) { 1139 NetworkInfo info = getNetworkInfoForType(networkType); 1140 if (info != null) { 1141 return new NetworkState(info, 1142 getLinkPropertiesForTypeInternal(networkType), 1143 getNetworkCapabilitiesForType(networkType)); 1144 } 1145 } 1146 return null; 1147 } 1148 1149 @Override 1150 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1151 enforceAccessPermission(); 1152 1153 final long token = Binder.clearCallingIdentity(); 1154 try { 1155 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1156 if (state != null) { 1157 try { 1158 return mPolicyManager.getNetworkQuotaInfo(state); 1159 } catch (RemoteException e) { 1160 } 1161 } 1162 return null; 1163 } finally { 1164 Binder.restoreCallingIdentity(token); 1165 } 1166 } 1167 1168 @Override 1169 public boolean isActiveNetworkMetered() { 1170 enforceAccessPermission(); 1171 final long token = Binder.clearCallingIdentity(); 1172 try { 1173 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1174 } finally { 1175 Binder.restoreCallingIdentity(token); 1176 } 1177 } 1178 1179 private boolean isNetworkMeteredUnchecked(int networkType) { 1180 final NetworkState state = getNetworkStateUnchecked(networkType); 1181 if (state != null) { 1182 try { 1183 return mPolicyManager.isNetworkMetered(state); 1184 } catch (RemoteException e) { 1185 } 1186 } 1187 return false; 1188 } 1189 1190 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1191 @Override 1192 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1193 int deviceType = Integer.parseInt(label); 1194 sendDataActivityBroadcast(deviceType, active, tsNanos); 1195 } 1196 }; 1197 1198 /** 1199 * Used to notice when the calling process dies so we can self-expire 1200 * 1201 * Also used to know if the process has cleaned up after itself when 1202 * our auto-expire timer goes off. The timer has a link to an object. 1203 * 1204 */ 1205 private class FeatureUser implements IBinder.DeathRecipient { 1206 int mNetworkType; 1207 String mFeature; 1208 IBinder mBinder; 1209 int mPid; 1210 int mUid; 1211 long mCreateTime; 1212 1213 FeatureUser(int type, String feature, IBinder binder) { 1214 super(); 1215 mNetworkType = type; 1216 mFeature = feature; 1217 mBinder = binder; 1218 mPid = getCallingPid(); 1219 mUid = getCallingUid(); 1220 mCreateTime = System.currentTimeMillis(); 1221 1222 try { 1223 mBinder.linkToDeath(this, 0); 1224 } catch (RemoteException e) { 1225 binderDied(); 1226 } 1227 } 1228 1229 void unlinkDeathRecipient() { 1230 mBinder.unlinkToDeath(this, 0); 1231 } 1232 1233 public void binderDied() { 1234 log("ConnectivityService FeatureUser binderDied(" + 1235 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1236 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1237 stopUsingNetworkFeature(this, false); 1238 } 1239 1240 public void expire() { 1241 if (VDBG) { 1242 log("ConnectivityService FeatureUser expire(" + 1243 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1244 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1245 } 1246 stopUsingNetworkFeature(this, false); 1247 } 1248 1249 public boolean isSameUser(FeatureUser u) { 1250 if (u == null) return false; 1251 1252 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1253 } 1254 1255 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1256 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1257 TextUtils.equals(mFeature, feature)) { 1258 return true; 1259 } 1260 return false; 1261 } 1262 1263 public String toString() { 1264 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1265 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1266 } 1267 } 1268 1269 // javadoc from interface 1270 public int startUsingNetworkFeature(int networkType, String feature, 1271 IBinder binder) { 1272 long startTime = 0; 1273 if (DBG) { 1274 startTime = SystemClock.elapsedRealtime(); 1275 } 1276 if (VDBG) { 1277 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1278 + Binder.getCallingUid()); 1279 } 1280 enforceChangePermission(); 1281 try { 1282 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1283 mNetConfigs[networkType] == null) { 1284 return PhoneConstants.APN_REQUEST_FAILED; 1285 } 1286 1287 FeatureUser f = new FeatureUser(networkType, feature, binder); 1288 1289 // TODO - move this into individual networktrackers 1290 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1291 1292 if (mLockdownEnabled) { 1293 // Since carrier APNs usually aren't available from VPN 1294 // endpoint, mark them as unavailable. 1295 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1296 } 1297 1298 if (mProtectedNetworks.contains(usedNetworkType)) { 1299 enforceConnectivityInternalPermission(); 1300 } 1301 1302 // if UID is restricted, don't allow them to bring up metered APNs 1303 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1304 final int uidRules; 1305 synchronized (mRulesLock) { 1306 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1307 } 1308 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1309 return PhoneConstants.APN_REQUEST_FAILED; 1310 } 1311 1312 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1313 if (network != null) { 1314 Integer currentPid = new Integer(getCallingPid()); 1315 if (usedNetworkType != networkType) { 1316 NetworkInfo ni = network.getNetworkInfo(); 1317 1318 if (ni.isAvailable() == false) { 1319 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1320 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1321 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1322 } else { 1323 // else make the attempt anyway - probably giving REQUEST_STARTED below 1324 if (DBG) { 1325 log("special network not available, but try anyway ni=" + 1326 ni.getTypeName()); 1327 } 1328 } 1329 } 1330 1331 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1332 1333 synchronized(this) { 1334 boolean addToList = true; 1335 if (restoreTimer < 0) { 1336 // In case there is no timer is specified for the feature, 1337 // make sure we don't add duplicate entry with the same request. 1338 for (FeatureUser u : mFeatureUsers) { 1339 if (u.isSameUser(f)) { 1340 // Duplicate user is found. Do not add. 1341 addToList = false; 1342 break; 1343 } 1344 } 1345 } 1346 1347 if (addToList) mFeatureUsers.add(f); 1348 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1349 // this gets used for per-pid dns when connected 1350 mNetRequestersPids[usedNetworkType].add(currentPid); 1351 } 1352 } 1353 1354 if (restoreTimer >= 0) { 1355 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1356 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1357 } 1358 1359 if ((ni.isConnectedOrConnecting() == true) && 1360 !network.isTeardownRequested()) { 1361 if (ni.isConnected() == true) { 1362 final long token = Binder.clearCallingIdentity(); 1363 try { 1364 // add the pid-specific dns 1365 handleDnsConfigurationChange(usedNetworkType); 1366 if (VDBG) log("special network already active"); 1367 } finally { 1368 Binder.restoreCallingIdentity(token); 1369 } 1370 return PhoneConstants.APN_ALREADY_ACTIVE; 1371 } 1372 if (VDBG) log("special network already connecting"); 1373 return PhoneConstants.APN_REQUEST_STARTED; 1374 } 1375 1376 // check if the radio in play can make another contact 1377 // assume if cannot for now 1378 1379 if (DBG) { 1380 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1381 feature); 1382 } 1383 if (network.reconnect()) { 1384 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1385 return PhoneConstants.APN_REQUEST_STARTED; 1386 } else { 1387 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1388 return PhoneConstants.APN_REQUEST_FAILED; 1389 } 1390 } else { 1391 // need to remember this unsupported request so we respond appropriately on stop 1392 synchronized(this) { 1393 mFeatureUsers.add(f); 1394 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1395 // this gets used for per-pid dns when connected 1396 mNetRequestersPids[usedNetworkType].add(currentPid); 1397 } 1398 } 1399 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1400 return -1; 1401 } 1402 } 1403 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1404 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1405 } finally { 1406 if (DBG) { 1407 final long execTime = SystemClock.elapsedRealtime() - startTime; 1408 if (execTime > 250) { 1409 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1410 } else { 1411 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1412 } 1413 } 1414 } 1415 } 1416 1417 // javadoc from interface 1418 public int stopUsingNetworkFeature(int networkType, String feature) { 1419 enforceChangePermission(); 1420 1421 int pid = getCallingPid(); 1422 int uid = getCallingUid(); 1423 1424 FeatureUser u = null; 1425 boolean found = false; 1426 1427 synchronized(this) { 1428 for (FeatureUser x : mFeatureUsers) { 1429 if (x.isSameUser(pid, uid, networkType, feature)) { 1430 u = x; 1431 found = true; 1432 break; 1433 } 1434 } 1435 } 1436 if (found && u != null) { 1437 if (VDBG) log("stopUsingNetworkFeature: X"); 1438 // stop regardless of how many other time this proc had called start 1439 return stopUsingNetworkFeature(u, true); 1440 } else { 1441 // none found! 1442 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1443 return 1; 1444 } 1445 } 1446 1447 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1448 int networkType = u.mNetworkType; 1449 String feature = u.mFeature; 1450 int pid = u.mPid; 1451 int uid = u.mUid; 1452 1453 NetworkStateTracker tracker = null; 1454 boolean callTeardown = false; // used to carry our decision outside of sync block 1455 1456 if (VDBG) { 1457 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1458 } 1459 1460 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1461 if (DBG) { 1462 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1463 ", net is invalid"); 1464 } 1465 return -1; 1466 } 1467 1468 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1469 // sync block 1470 synchronized(this) { 1471 // check if this process still has an outstanding start request 1472 if (!mFeatureUsers.contains(u)) { 1473 if (VDBG) { 1474 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1475 ", ignoring"); 1476 } 1477 return 1; 1478 } 1479 u.unlinkDeathRecipient(); 1480 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1481 // If we care about duplicate requests, check for that here. 1482 // 1483 // This is done to support the extension of a request - the app 1484 // can request we start the network feature again and renew the 1485 // auto-shutoff delay. Normal "stop" calls from the app though 1486 // do not pay attention to duplicate requests - in effect the 1487 // API does not refcount and a single stop will counter multiple starts. 1488 if (ignoreDups == false) { 1489 for (FeatureUser x : mFeatureUsers) { 1490 if (x.isSameUser(u)) { 1491 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1492 return 1; 1493 } 1494 } 1495 } 1496 1497 // TODO - move to individual network trackers 1498 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1499 1500 tracker = mNetTrackers[usedNetworkType]; 1501 if (tracker == null) { 1502 if (DBG) { 1503 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1504 " no known tracker for used net type " + usedNetworkType); 1505 } 1506 return -1; 1507 } 1508 if (usedNetworkType != networkType) { 1509 Integer currentPid = new Integer(pid); 1510 mNetRequestersPids[usedNetworkType].remove(currentPid); 1511 1512 final long token = Binder.clearCallingIdentity(); 1513 try { 1514 reassessPidDns(pid, true); 1515 } finally { 1516 Binder.restoreCallingIdentity(token); 1517 } 1518 flushVmDnsCache(); 1519 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1520 if (VDBG) { 1521 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1522 " others still using it"); 1523 } 1524 return 1; 1525 } 1526 callTeardown = true; 1527 } else { 1528 if (DBG) { 1529 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1530 " not a known feature - dropping"); 1531 } 1532 } 1533 } 1534 1535 if (callTeardown) { 1536 if (DBG) { 1537 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1538 } 1539 tracker.teardown(); 1540 return 1; 1541 } else { 1542 return -1; 1543 } 1544 } 1545 1546 /** 1547 * Check if the address falls into any of currently running VPN's route's. 1548 */ 1549 private boolean isAddressUnderVpn(InetAddress address) { 1550 synchronized (mVpns) { 1551 synchronized (mRoutesLock) { 1552 int uid = UserHandle.getCallingUserId(); 1553 Vpn vpn = mVpns.get(uid); 1554 if (vpn == null) { 1555 return false; 1556 } 1557 1558 // Check if an exemption exists for this address. 1559 for (LinkAddress destination : mExemptAddresses) { 1560 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1561 continue; 1562 } 1563 1564 int prefix = destination.getNetworkPrefixLength(); 1565 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1566 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1567 prefix); 1568 1569 if (addrMasked.equals(destMasked)) { 1570 return false; 1571 } 1572 } 1573 1574 // Finally check if the address is covered by the VPN. 1575 return vpn.isAddressCovered(address); 1576 } 1577 } 1578 } 1579 1580 /** 1581 * @deprecated use requestRouteToHostAddress instead 1582 * 1583 * Ensure that a network route exists to deliver traffic to the specified 1584 * host via the specified network interface. 1585 * @param networkType the type of the network over which traffic to the 1586 * specified host is to be routed 1587 * @param hostAddress the IP address of the host to which the route is 1588 * desired 1589 * @return {@code true} on success, {@code false} on failure 1590 */ 1591 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1592 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1593 1594 if (inetAddress == null) { 1595 return false; 1596 } 1597 1598 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1599 } 1600 1601 /** 1602 * Ensure that a network route exists to deliver traffic to the specified 1603 * host via the specified network interface. 1604 * @param networkType the type of the network over which traffic to the 1605 * specified host is to be routed 1606 * @param hostAddress the IP address of the host to which the route is 1607 * desired 1608 * @return {@code true} on success, {@code false} on failure 1609 */ 1610 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1611 String packageName) { 1612 enforceChangePermission(); 1613 if (mProtectedNetworks.contains(networkType)) { 1614 enforceConnectivityInternalPermission(); 1615 } 1616 boolean exempt; 1617 InetAddress addr; 1618 try { 1619 addr = InetAddress.getByAddress(hostAddress); 1620 } catch (UnknownHostException e) { 1621 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1622 return false; 1623 } 1624 // System apps may request routes bypassing the VPN to keep other networks working. 1625 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1626 exempt = true; 1627 } else { 1628 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1629 try { 1630 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1631 0); 1632 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1633 } catch (NameNotFoundException e) { 1634 throw new IllegalArgumentException("Failed to find calling package details", e); 1635 } 1636 } 1637 1638 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1639 // This can be either because the VPN's routes do not cover the destination or a 1640 // system application added an exemption that covers this destination. 1641 if (!exempt && isAddressUnderVpn(addr)) { 1642 return false; 1643 } 1644 1645 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1646 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1647 return false; 1648 } 1649 NetworkStateTracker tracker = mNetTrackers[networkType]; 1650 DetailedState netState = DetailedState.DISCONNECTED; 1651 if (tracker != null) { 1652 netState = tracker.getNetworkInfo().getDetailedState(); 1653 } 1654 1655 if ((netState != DetailedState.CONNECTED && 1656 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1657 tracker.isTeardownRequested()) { 1658 if (VDBG) { 1659 log("requestRouteToHostAddress on down network " 1660 + "(" + networkType + ") - dropped" 1661 + " tracker=" + tracker 1662 + " netState=" + netState 1663 + " isTeardownRequested=" 1664 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1665 } 1666 return false; 1667 } 1668 final long token = Binder.clearCallingIdentity(); 1669 try { 1670 LinkProperties lp = tracker.getLinkProperties(); 1671 boolean ok = addRouteToAddress(lp, addr, exempt, tracker.getNetwork().netId); 1672 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1673 return ok; 1674 } finally { 1675 Binder.restoreCallingIdentity(token); 1676 } 1677 } 1678 1679 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1680 boolean exempt, int netId) { 1681 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId); 1682 } 1683 1684 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1685 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId); 1686 } 1687 1688 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt, 1689 int netId) { 1690 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, netId); 1691 } 1692 1693 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr, int netId) { 1694 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT, netId); 1695 } 1696 1697 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1698 boolean toDefaultTable, boolean exempt, int netId) { 1699 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1700 if (bestRoute == null) { 1701 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1702 } else { 1703 String iface = bestRoute.getInterface(); 1704 if (bestRoute.getGateway().equals(addr)) { 1705 // if there is no better route, add the implied hostroute for our gateway 1706 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1707 } else { 1708 // if we will connect to this through another route, add a direct route 1709 // to it's gateway 1710 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1711 } 1712 } 1713 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId); 1714 } 1715 1716 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1717 boolean toDefaultTable, boolean exempt, int netId) { 1718 if ((lp == null) || (r == null)) { 1719 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1720 return false; 1721 } 1722 1723 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1724 loge("Error modifying route - too much recursion"); 1725 return false; 1726 } 1727 1728 String ifaceName = r.getInterface(); 1729 if(ifaceName == null) { 1730 loge("Error modifying route - no interface name"); 1731 return false; 1732 } 1733 if (r.hasGateway()) { 1734 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1735 if (bestRoute != null) { 1736 if (bestRoute.getGateway().equals(r.getGateway())) { 1737 // if there is no better route, add the implied hostroute for our gateway 1738 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1739 } else { 1740 // if we will connect to our gateway through another route, add a direct 1741 // route to it's gateway 1742 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1743 bestRoute.getGateway(), 1744 ifaceName); 1745 } 1746 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId); 1747 } 1748 } 1749 if (doAdd) { 1750 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1751 try { 1752 if (toDefaultTable) { 1753 synchronized (mRoutesLock) { 1754 // only track default table - only one apps can effect 1755 mAddedRoutes.add(r); 1756 mNetd.addRoute(netId, r); 1757 if (exempt) { 1758 LinkAddress dest = r.getDestination(); 1759 if (!mExemptAddresses.contains(dest)) { 1760 mNetd.setHostExemption(dest); 1761 mExemptAddresses.add(dest); 1762 } 1763 } 1764 } 1765 } else { 1766 mNetd.addRoute(netId, r); 1767 } 1768 } catch (Exception e) { 1769 // never crash - catch them all 1770 if (DBG) loge("Exception trying to add a route: " + e); 1771 return false; 1772 } 1773 } else { 1774 // if we remove this one and there are no more like it, then refcount==0 and 1775 // we can remove it from the table 1776 if (toDefaultTable) { 1777 synchronized (mRoutesLock) { 1778 mAddedRoutes.remove(r); 1779 if (mAddedRoutes.contains(r) == false) { 1780 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1781 try { 1782 mNetd.removeRoute(netId, r); 1783 LinkAddress dest = r.getDestination(); 1784 if (mExemptAddresses.contains(dest)) { 1785 mNetd.clearHostExemption(dest); 1786 mExemptAddresses.remove(dest); 1787 } 1788 } catch (Exception e) { 1789 // never crash - catch them all 1790 if (VDBG) loge("Exception trying to remove a route: " + e); 1791 return false; 1792 } 1793 } else { 1794 if (VDBG) log("not removing " + r + " as it's still in use"); 1795 } 1796 } 1797 } else { 1798 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1799 try { 1800 mNetd.removeRoute(netId, r); 1801 } catch (Exception e) { 1802 // never crash - catch them all 1803 if (VDBG) loge("Exception trying to remove a route: " + e); 1804 return false; 1805 } 1806 } 1807 } 1808 return true; 1809 } 1810 1811 /** 1812 * @see ConnectivityManager#getMobileDataEnabled() 1813 */ 1814 public boolean getMobileDataEnabled() { 1815 // TODO: This detail should probably be in DataConnectionTracker's 1816 // which is where we store the value and maybe make this 1817 // asynchronous. 1818 enforceAccessPermission(); 1819 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1820 Settings.Global.MOBILE_DATA, 1) == 1; 1821 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1822 return retVal; 1823 } 1824 1825 public void setDataDependency(int networkType, boolean met) { 1826 enforceConnectivityInternalPermission(); 1827 1828 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1829 (met ? ENABLED : DISABLED), networkType)); 1830 } 1831 1832 private void handleSetDependencyMet(int networkType, boolean met) { 1833 if (mNetTrackers[networkType] != null) { 1834 if (DBG) { 1835 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1836 } 1837 mNetTrackers[networkType].setDependencyMet(met); 1838 } 1839 } 1840 1841 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1842 @Override 1843 public void onUidRulesChanged(int uid, int uidRules) { 1844 // caller is NPMS, since we only register with them 1845 if (LOGD_RULES) { 1846 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1847 } 1848 1849 synchronized (mRulesLock) { 1850 // skip update when we've already applied rules 1851 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1852 if (oldRules == uidRules) return; 1853 1854 mUidRules.put(uid, uidRules); 1855 } 1856 1857 // TODO: notify UID when it has requested targeted updates 1858 } 1859 1860 @Override 1861 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1862 // caller is NPMS, since we only register with them 1863 if (LOGD_RULES) { 1864 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1865 } 1866 1867 synchronized (mRulesLock) { 1868 mMeteredIfaces.clear(); 1869 for (String iface : meteredIfaces) { 1870 mMeteredIfaces.add(iface); 1871 } 1872 } 1873 } 1874 1875 @Override 1876 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1877 // caller is NPMS, since we only register with them 1878 if (LOGD_RULES) { 1879 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1880 } 1881 1882 // kick off connectivity change broadcast for active network, since 1883 // global background policy change is radical. 1884 final int networkType = mActiveDefaultNetwork; 1885 if (isNetworkTypeValid(networkType)) { 1886 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1887 if (tracker != null) { 1888 final NetworkInfo info = tracker.getNetworkInfo(); 1889 if (info != null && info.isConnected()) { 1890 sendConnectedBroadcast(info); 1891 } 1892 } 1893 } 1894 } 1895 }; 1896 1897 /** 1898 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1899 */ 1900 public void setMobileDataEnabled(boolean enabled) { 1901 enforceChangePermission(); 1902 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1903 1904 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1905 (enabled ? ENABLED : DISABLED), 0)); 1906 } 1907 1908 private void handleSetMobileData(boolean enabled) { 1909 // TODO - handle this - probably generalize passing in a transport type and send to the 1910 // factories? 1911 } 1912 1913 @Override 1914 public void setPolicyDataEnable(int networkType, boolean enabled) { 1915 // only someone like NPMS should only be calling us 1916 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1917 1918 mHandler.sendMessage(mHandler.obtainMessage( 1919 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1920 } 1921 1922 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1923 // TODO - handle this passing to factories 1924// if (isNetworkTypeValid(networkType)) { 1925// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1926// if (tracker != null) { 1927// tracker.setPolicyDataEnable(enabled); 1928// } 1929// } 1930 } 1931 1932 private void enforceAccessPermission() { 1933 mContext.enforceCallingOrSelfPermission( 1934 android.Manifest.permission.ACCESS_NETWORK_STATE, 1935 "ConnectivityService"); 1936 } 1937 1938 private void enforceChangePermission() { 1939 mContext.enforceCallingOrSelfPermission( 1940 android.Manifest.permission.CHANGE_NETWORK_STATE, 1941 "ConnectivityService"); 1942 } 1943 1944 // TODO Make this a special check when it goes public 1945 private void enforceTetherChangePermission() { 1946 mContext.enforceCallingOrSelfPermission( 1947 android.Manifest.permission.CHANGE_NETWORK_STATE, 1948 "ConnectivityService"); 1949 } 1950 1951 private void enforceTetherAccessPermission() { 1952 mContext.enforceCallingOrSelfPermission( 1953 android.Manifest.permission.ACCESS_NETWORK_STATE, 1954 "ConnectivityService"); 1955 } 1956 1957 private void enforceConnectivityInternalPermission() { 1958 mContext.enforceCallingOrSelfPermission( 1959 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1960 "ConnectivityService"); 1961 } 1962 1963 private void enforceMarkNetworkSocketPermission() { 1964 //Media server special case 1965 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1966 return; 1967 } 1968 mContext.enforceCallingOrSelfPermission( 1969 android.Manifest.permission.MARK_NETWORK_SOCKET, 1970 "ConnectivityService"); 1971 } 1972 1973 /** 1974 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1975 * network, we ignore it. If it is for the active network, we send out a 1976 * broadcast. But first, we check whether it might be possible to connect 1977 * to a different network. 1978 * @param info the {@code NetworkInfo} for the network 1979 */ 1980 private void handleDisconnect(NetworkInfo info) { 1981 1982 int prevNetType = info.getType(); 1983 1984 mNetTrackers[prevNetType].setTeardownRequested(false); 1985 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 1986 1987 // Remove idletimer previously setup in {@code handleConnect} 1988// Already in place in new function. This is dead code. 1989// if (mNetConfigs[prevNetType].isDefault()) { 1990// removeDataActivityTracking(prevNetType); 1991// } 1992 1993 /* 1994 * If the disconnected network is not the active one, then don't report 1995 * this as a loss of connectivity. What probably happened is that we're 1996 * getting the disconnect for a network that we explicitly disabled 1997 * in accordance with network preference policies. 1998 */ 1999 if (!mNetConfigs[prevNetType].isDefault()) { 2000 List<Integer> pids = mNetRequestersPids[prevNetType]; 2001 for (Integer pid : pids) { 2002 // will remove them because the net's no longer connected 2003 // need to do this now as only now do we know the pids and 2004 // can properly null things that are no longer referenced. 2005 reassessPidDns(pid.intValue(), false); 2006 } 2007 } 2008 2009 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2010 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2011 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2012 if (info.isFailover()) { 2013 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2014 info.setFailover(false); 2015 } 2016 if (info.getReason() != null) { 2017 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2018 } 2019 if (info.getExtraInfo() != null) { 2020 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2021 info.getExtraInfo()); 2022 } 2023 2024 if (mNetConfigs[prevNetType].isDefault()) { 2025 tryFailover(prevNetType); 2026 if (mActiveDefaultNetwork != -1) { 2027 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2028 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2029 } else { 2030 mDefaultInetConditionPublished = 0; // we're not connected anymore 2031 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2032 } 2033 } 2034 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2035 2036 // Reset interface if no other connections are using the same interface 2037 boolean doReset = true; 2038 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2039 if (linkProperties != null) { 2040 String oldIface = linkProperties.getInterfaceName(); 2041 if (TextUtils.isEmpty(oldIface) == false) { 2042 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2043 if (networkStateTracker == null) continue; 2044 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2045 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2046 LinkProperties l = networkStateTracker.getLinkProperties(); 2047 if (l == null) continue; 2048 if (oldIface.equals(l.getInterfaceName())) { 2049 doReset = false; 2050 break; 2051 } 2052 } 2053 } 2054 } 2055 } 2056 2057 // do this before we broadcast the change 2058// Already done in new function. This is dead code. 2059// handleConnectivityChange(prevNetType, doReset); 2060 2061 final Intent immediateIntent = new Intent(intent); 2062 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2063 sendStickyBroadcast(immediateIntent); 2064 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2065 /* 2066 * If the failover network is already connected, then immediately send 2067 * out a followup broadcast indicating successful failover 2068 */ 2069 if (mActiveDefaultNetwork != -1) { 2070 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2071 getConnectivityChangeDelay()); 2072 } 2073 try { 2074// mNetd.removeNetwork(thisNetId); 2075 } catch (Exception e) { 2076 loge("Exception removing network: " + e); 2077 } finally { 2078 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2079 } 2080 } 2081 2082 private void tryFailover(int prevNetType) { 2083 /* 2084 * If this is a default network, check if other defaults are available. 2085 * Try to reconnect on all available and let them hash it out when 2086 * more than one connects. 2087 */ 2088 if (mNetConfigs[prevNetType].isDefault()) { 2089 if (mActiveDefaultNetwork == prevNetType) { 2090 if (DBG) { 2091 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2092 } 2093 mActiveDefaultNetwork = -1; 2094 try { 2095 mNetd.clearDefaultNetId(); 2096 } catch (Exception e) { 2097 loge("Exception clearing default network :" + e); 2098 } 2099 } 2100 2101 // don't signal a reconnect for anything lower or equal priority than our 2102 // current connected default 2103 // TODO - don't filter by priority now - nice optimization but risky 2104// int currentPriority = -1; 2105// if (mActiveDefaultNetwork != -1) { 2106// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2107// } 2108 2109 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2110 if (checkType == prevNetType) continue; 2111 if (mNetConfigs[checkType] == null) continue; 2112 if (!mNetConfigs[checkType].isDefault()) continue; 2113 if (mNetTrackers[checkType] == null) continue; 2114 2115// Enabling the isAvailable() optimization caused mobile to not get 2116// selected if it was in the middle of error handling. Specifically 2117// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2118// would not be available and we wouldn't get connected to anything. 2119// So removing the isAvailable() optimization below for now. TODO: This 2120// optimization should work and we need to investigate why it doesn't work. 2121// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2122// complete before it is really complete. 2123 2124// if (!mNetTrackers[checkType].isAvailable()) continue; 2125 2126// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2127 2128 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2129 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2130 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2131 checkInfo.setFailover(true); 2132 checkTracker.reconnect(); 2133 } 2134 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2135 } 2136 } 2137 } 2138 2139 public void sendConnectedBroadcast(NetworkInfo info) { 2140 enforceConnectivityInternalPermission(); 2141 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2142 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2143 } 2144 2145 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2146 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2147 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2148 } 2149 2150 private void sendInetConditionBroadcast(NetworkInfo info) { 2151 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2152 } 2153 2154 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2155 if (mLockdownTracker != null) { 2156 info = mLockdownTracker.augmentNetworkInfo(info); 2157 } 2158 2159 Intent intent = new Intent(bcastType); 2160 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2161 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2162 if (info.isFailover()) { 2163 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2164 info.setFailover(false); 2165 } 2166 if (info.getReason() != null) { 2167 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2168 } 2169 if (info.getExtraInfo() != null) { 2170 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2171 info.getExtraInfo()); 2172 } 2173 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2174 return intent; 2175 } 2176 2177 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2178 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2179 } 2180 2181 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2182 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2183 } 2184 2185 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2186 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2187 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2188 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2189 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2190 final long ident = Binder.clearCallingIdentity(); 2191 try { 2192 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2193 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2194 } finally { 2195 Binder.restoreCallingIdentity(ident); 2196 } 2197 } 2198 2199 private void sendStickyBroadcast(Intent intent) { 2200 synchronized(this) { 2201 if (!mSystemReady) { 2202 mInitialBroadcast = new Intent(intent); 2203 } 2204 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2205 if (VDBG) { 2206 log("sendStickyBroadcast: action=" + intent.getAction()); 2207 } 2208 2209 final long ident = Binder.clearCallingIdentity(); 2210 try { 2211 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2212 } finally { 2213 Binder.restoreCallingIdentity(ident); 2214 } 2215 } 2216 } 2217 2218 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2219 if (delayMs <= 0) { 2220 sendStickyBroadcast(intent); 2221 } else { 2222 if (VDBG) { 2223 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2224 + intent.getAction()); 2225 } 2226 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2227 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2228 } 2229 } 2230 2231 void systemReady() { 2232 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2233 loadGlobalProxy(); 2234 2235 synchronized(this) { 2236 mSystemReady = true; 2237 if (mInitialBroadcast != null) { 2238 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2239 mInitialBroadcast = null; 2240 } 2241 } 2242 // load the global proxy at startup 2243 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2244 2245 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2246 // for user to unlock device. 2247 if (!updateLockdownVpn()) { 2248 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2249 mContext.registerReceiver(mUserPresentReceiver, filter); 2250 } 2251 } 2252 2253 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2254 @Override 2255 public void onReceive(Context context, Intent intent) { 2256 // Try creating lockdown tracker, since user present usually means 2257 // unlocked keystore. 2258 if (updateLockdownVpn()) { 2259 mContext.unregisterReceiver(this); 2260 } 2261 } 2262 }; 2263 2264 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2265 if (((type != mNetworkPreference) 2266 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2267 || (mNetworkPreference == mActiveDefaultNetwork)) { 2268 return false; 2269 } 2270 return true; 2271 } 2272 2273 private void handleConnect(NetworkInfo info) { 2274 final int newNetType = info.getType(); 2275 2276 // snapshot isFailover, because sendConnectedBroadcast() resets it 2277 boolean isFailover = info.isFailover(); 2278 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2279 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2280 2281 if (VDBG) { 2282 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2283 + " isFailover" + isFailover); 2284 } 2285 2286 // if this is a default net and other default is running 2287 // kill the one not preferred 2288 if (mNetConfigs[newNetType].isDefault()) { 2289 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2290 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2291 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2292 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2293 // tear down the other 2294 NetworkStateTracker otherNet = 2295 mNetTrackers[mActiveDefaultNetwork]; 2296 if (DBG) { 2297 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2298 " teardown"); 2299 } 2300 if (!teardown(otherNet)) { 2301 loge("Network declined teardown request"); 2302 teardown(thisNet); 2303 return; 2304 } 2305 } else { 2306 //TODO - remove 2307 loge("network teardown skipped due to net.teardownPolicy setting"); 2308 } 2309 } else { 2310 // don't accept this one 2311 if (VDBG) { 2312 log("Not broadcasting CONNECT_ACTION " + 2313 "to torn down network " + info.getTypeName()); 2314 } 2315 teardown(thisNet); 2316 return; 2317 } 2318 } 2319 int thisNetId = nextNetId(); 2320 thisNet.setNetId(thisNetId); 2321 try { 2322// mNetd.createNetwork(thisNetId, thisIface); 2323 } catch (Exception e) { 2324 loge("Exception creating network :" + e); 2325 teardown(thisNet); 2326 return; 2327 } 2328// Already in place in new function. This is dead code. 2329// setupDataActivityTracking(newNetType); 2330 synchronized (ConnectivityService.this) { 2331 // have a new default network, release the transition wakelock in a second 2332 // if it's held. The second pause is to allow apps to reconnect over the 2333 // new network 2334 if (mNetTransitionWakeLock.isHeld()) { 2335 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2336 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2337 mNetTransitionWakeLockSerialNumber, 0), 2338 1000); 2339 } 2340 } 2341 mActiveDefaultNetwork = newNetType; 2342 try { 2343 mNetd.setDefaultNetId(thisNetId); 2344 } catch (Exception e) { 2345 loge("Exception setting default network :" + e); 2346 } 2347 // this will cause us to come up initially as unconnected and switching 2348 // to connected after our normal pause unless somebody reports us as reall 2349 // disconnected 2350 mDefaultInetConditionPublished = 0; 2351 mDefaultConnectionSequence++; 2352 mInetConditionChangeInFlight = false; 2353 // Don't do this - if we never sign in stay, grey 2354 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2355 updateNetworkSettings(thisNet); 2356 } else { 2357 int thisNetId = nextNetId(); 2358 thisNet.setNetId(thisNetId); 2359 try { 2360// mNetd.createNetwork(thisNetId, thisIface); 2361 } catch (Exception e) { 2362 loge("Exception creating network :" + e); 2363 teardown(thisNet); 2364 return; 2365 } 2366 } 2367 thisNet.setTeardownRequested(false); 2368// Already in place in new function. This is dead code. 2369// updateMtuSizeSettings(thisNet); 2370// handleConnectivityChange(newNetType, false); 2371 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2372 2373 // notify battery stats service about this network 2374 if (thisIface != null) { 2375 try { 2376 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2377 } catch (RemoteException e) { 2378 // ignored; service lives in system_server 2379 } 2380 } 2381 } 2382 2383 /** @hide */ 2384 @Override 2385 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2386 enforceConnectivityInternalPermission(); 2387 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2388// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2389 } 2390 2391 /** 2392 * Setup data activity tracking for the given network. 2393 * 2394 * Every {@code setupDataActivityTracking} should be paired with a 2395 * {@link #removeDataActivityTracking} for cleanup. 2396 */ 2397 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2398 final String iface = networkAgent.linkProperties.getInterfaceName(); 2399 2400 final int timeout; 2401 int type = ConnectivityManager.TYPE_NONE; 2402 2403 if (networkAgent.networkCapabilities.hasTransport( 2404 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2405 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2406 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2407 5); 2408 type = ConnectivityManager.TYPE_MOBILE; 2409 } else if (networkAgent.networkCapabilities.hasTransport( 2410 NetworkCapabilities.TRANSPORT_WIFI)) { 2411 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2412 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2413 0); 2414 type = ConnectivityManager.TYPE_WIFI; 2415 } else { 2416 // do not track any other networks 2417 timeout = 0; 2418 } 2419 2420 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2421 try { 2422 mNetd.addIdleTimer(iface, timeout, type); 2423 } catch (Exception e) { 2424 // You shall not crash! 2425 loge("Exception in setupDataActivityTracking " + e); 2426 } 2427 } 2428 } 2429 2430 /** 2431 * Remove data activity tracking when network disconnects. 2432 */ 2433 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2434 final String iface = networkAgent.linkProperties.getInterfaceName(); 2435 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2436 2437 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2438 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2439 try { 2440 // the call fails silently if no idletimer setup for this interface 2441 mNetd.removeIdleTimer(iface); 2442 } catch (Exception e) { 2443 loge("Exception in removeDataActivityTracking " + e); 2444 } 2445 } 2446 } 2447 2448 /** 2449 * After a change in the connectivity state of a network. We're mainly 2450 * concerned with making sure that the list of DNS servers is set up 2451 * according to which networks are connected, and ensuring that the 2452 * right routing table entries exist. 2453 * 2454 * TODO - delete when we're sure all this functionallity is captured. 2455 */ 2456 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2457 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2458 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2459 if (VDBG) { 2460 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2461 + " resetMask=" + resetMask); 2462 } 2463 2464 /* 2465 * If a non-default network is enabled, add the host routes that 2466 * will allow it's DNS servers to be accessed. 2467 */ 2468 handleDnsConfigurationChange(netType); 2469 2470 LinkProperties newLp = null; 2471 2472 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2473 newLp = mNetTrackers[netType].getLinkProperties(); 2474 if (VDBG) { 2475 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2476 " doReset=" + doReset + " resetMask=" + resetMask + 2477 "\n curLp=" + curLp + 2478 "\n newLp=" + newLp); 2479 } 2480 2481 if (curLp != null) { 2482 if (curLp.isIdenticalInterfaceName(newLp)) { 2483 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2484 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2485 for (LinkAddress linkAddr : car.removed) { 2486 if (linkAddr.getAddress() instanceof Inet4Address) { 2487 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2488 } 2489 if (linkAddr.getAddress() instanceof Inet6Address) { 2490 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2491 } 2492 } 2493 if (DBG) { 2494 log("handleConnectivityChange: addresses changed" + 2495 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2496 "\n car=" + car); 2497 } 2498 } else { 2499 if (VDBG) { 2500 log("handleConnectivityChange: addresses are the same reset per" + 2501 " doReset linkProperty[" + netType + "]:" + 2502 " resetMask=" + resetMask); 2503 } 2504 } 2505 } else { 2506 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2507 if (DBG) { 2508 log("handleConnectivityChange: interface not not equivalent reset both" + 2509 " linkProperty[" + netType + "]:" + 2510 " resetMask=" + resetMask); 2511 } 2512 } 2513 } 2514 if (mNetConfigs[netType].isDefault()) { 2515 handleApplyDefaultProxy(newLp.getHttpProxy()); 2516 } 2517 } else { 2518 if (VDBG) { 2519 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2520 " doReset=" + doReset + " resetMask=" + resetMask + 2521 "\n curLp=" + curLp + 2522 "\n newLp= null"); 2523 } 2524 } 2525 mCurrentLinkProperties[netType] = newLp; 2526 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2527 mNetTrackers[netType].getNetwork().netId); 2528 2529 if (resetMask != 0 || resetDns) { 2530 if (VDBG) log("handleConnectivityChange: resetting"); 2531 if (curLp != null) { 2532 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2533 for (String iface : curLp.getAllInterfaceNames()) { 2534 if (TextUtils.isEmpty(iface) == false) { 2535 if (resetMask != 0) { 2536 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2537 NetworkUtils.resetConnections(iface, resetMask); 2538 2539 // Tell VPN the interface is down. It is a temporary 2540 // but effective fix to make VPN aware of the change. 2541 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2542 synchronized(mVpns) { 2543 for (int i = 0; i < mVpns.size(); i++) { 2544 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2545 } 2546 } 2547 } 2548 } 2549 } else { 2550 loge("Can't reset connection for type "+netType); 2551 } 2552 } 2553 if (resetDns) { 2554 flushVmDnsCache(); 2555 if (VDBG) log("resetting DNS cache for type " + netType); 2556 try { 2557 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2558 } catch (Exception e) { 2559 // never crash - catch them all 2560 if (DBG) loge("Exception resetting dns cache: " + e); 2561 } 2562 } 2563 } 2564 } 2565 2566 // TODO: Temporary notifying upstread change to Tethering. 2567 // @see bug/4455071 2568 /** Notify TetheringService if interface name has been changed. */ 2569 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2570 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2571 if (isTetheringSupported()) { 2572 mTethering.handleTetherIfaceChange(); 2573 } 2574 } 2575 } 2576 2577 /** 2578 * Add and remove routes using the old properties (null if not previously connected), 2579 * new properties (null if becoming disconnected). May even be double null, which 2580 * is a noop. 2581 * Uses isLinkDefault to determine if default routes should be set or conversely if 2582 * host routes should be set to the dns servers 2583 * returns a boolean indicating the routes changed 2584 */ 2585 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2586 boolean isLinkDefault, boolean exempt, int netId) { 2587 Collection<RouteInfo> routesToAdd = null; 2588 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2589 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2590 if (curLp != null) { 2591 // check for the delta between the current set and the new 2592 routeDiff = curLp.compareAllRoutes(newLp); 2593 dnsDiff = curLp.compareDnses(newLp); 2594 } else if (newLp != null) { 2595 routeDiff.added = newLp.getAllRoutes(); 2596 dnsDiff.added = newLp.getDnses(); 2597 } 2598 2599 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2600 2601 for (RouteInfo r : routeDiff.removed) { 2602 if (isLinkDefault || ! r.isDefaultRoute()) { 2603 if (VDBG) log("updateRoutes: default remove route r=" + r); 2604 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2605 } 2606 if (isLinkDefault == false) { 2607 // remove from a secondary route table 2608 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2609 } 2610 } 2611 2612 for (RouteInfo r : routeDiff.added) { 2613 if (isLinkDefault || ! r.isDefaultRoute()) { 2614 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2615 } else { 2616 // add to a secondary route table 2617 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2618 2619 // many radios add a default route even when we don't want one. 2620 // remove the default route unless somebody else has asked for it 2621 String ifaceName = newLp.getInterfaceName(); 2622 synchronized (mRoutesLock) { 2623 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2624 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2625 try { 2626 mNetd.removeRoute(netId, r); 2627 } catch (Exception e) { 2628 // never crash - catch them all 2629 if (DBG) loge("Exception trying to remove a route: " + e); 2630 } 2631 } 2632 } 2633 } 2634 } 2635 2636 return routesChanged; 2637 } 2638 2639 /** 2640 * Reads the network specific MTU size from reources. 2641 * and set it on it's iface. 2642 */ 2643 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2644 final String iface = newLp.getInterfaceName(); 2645 final int mtu = newLp.getMtu(); 2646 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2647 if (VDBG) log("identical MTU - not setting"); 2648 return; 2649 } 2650 2651 if (mtu < 68 || mtu > 10000) { 2652 loge("Unexpected mtu value: " + mtu + ", " + iface); 2653 return; 2654 } 2655 2656 try { 2657 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2658 mNetd.setMtu(iface, mtu); 2659 } catch (Exception e) { 2660 Slog.e(TAG, "exception in setMtu()" + e); 2661 } 2662 } 2663 2664 /** 2665 * Reads the network specific TCP buffer sizes from SystemProperties 2666 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2667 * wide use 2668 */ 2669 private void updateNetworkSettings(NetworkStateTracker nt) { 2670 String key = nt.getTcpBufferSizesPropName(); 2671 String bufferSizes = key == null ? null : SystemProperties.get(key); 2672 2673 if (TextUtils.isEmpty(bufferSizes)) { 2674 if (VDBG) log(key + " not found in system properties. Using defaults"); 2675 2676 // Setting to default values so we won't be stuck to previous values 2677 key = "net.tcp.buffersize.default"; 2678 bufferSizes = SystemProperties.get(key); 2679 } 2680 2681 // Set values in kernel 2682 if (bufferSizes.length() != 0) { 2683 if (VDBG) { 2684 log("Setting TCP values: [" + bufferSizes 2685 + "] which comes from [" + key + "]"); 2686 } 2687 setBufferSize(bufferSizes); 2688 } 2689 2690 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2691 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2692 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2693 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2694 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2695 if (rwndValue != 0) { 2696 SystemProperties.set(sysctlKey, rwndValue.toString()); 2697 } 2698 } 2699 2700 /** 2701 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2702 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2703 * 2704 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2705 * writeMin, writeInitial, writeMax" 2706 */ 2707 private void setBufferSize(String bufferSizes) { 2708 try { 2709 String[] values = bufferSizes.split(","); 2710 2711 if (values.length == 6) { 2712 final String prefix = "/sys/kernel/ipv4/tcp_"; 2713 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2714 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2715 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2716 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2717 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2718 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2719 } else { 2720 loge("Invalid buffersize string: " + bufferSizes); 2721 } 2722 } catch (IOException e) { 2723 loge("Can't set tcp buffer sizes:" + e); 2724 } 2725 } 2726 2727 /** 2728 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2729 * on the highest priority active net which this process requested. 2730 * If there aren't any, clear it out 2731 */ 2732 private void reassessPidDns(int pid, boolean doBump) 2733 { 2734 if (VDBG) log("reassessPidDns for pid " + pid); 2735 Integer myPid = new Integer(pid); 2736 for(int i : mPriorityList) { 2737 if (mNetConfigs[i].isDefault()) { 2738 continue; 2739 } 2740 NetworkStateTracker nt = mNetTrackers[i]; 2741 if (nt.getNetworkInfo().isConnected() && 2742 !nt.isTeardownRequested()) { 2743 LinkProperties p = nt.getLinkProperties(); 2744 if (p == null) continue; 2745 if (mNetRequestersPids[i].contains(myPid)) { 2746 try { 2747 // TODO: Reimplement this via local variable in bionic. 2748 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2749 } catch (Exception e) { 2750 Slog.e(TAG, "exception reasseses pid dns: " + e); 2751 } 2752 return; 2753 } 2754 } 2755 } 2756 // nothing found - delete 2757 try { 2758 // TODO: Reimplement this via local variable in bionic. 2759 // mNetd.clearDnsNetworkForPid(pid); 2760 } catch (Exception e) { 2761 Slog.e(TAG, "exception clear interface from pid: " + e); 2762 } 2763 } 2764 2765 private void flushVmDnsCache() { 2766 /* 2767 * Tell the VMs to toss their DNS caches 2768 */ 2769 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2770 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2771 /* 2772 * Connectivity events can happen before boot has completed ... 2773 */ 2774 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2775 final long ident = Binder.clearCallingIdentity(); 2776 try { 2777 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2778 } finally { 2779 Binder.restoreCallingIdentity(ident); 2780 } 2781 } 2782 2783 // Caller must grab mDnsLock. 2784 private void updateDnsLocked(String network, int netId, 2785 Collection<InetAddress> dnses, String domains) { 2786 int last = 0; 2787 if (dnses.size() == 0 && mDefaultDns != null) { 2788 dnses = new ArrayList(); 2789 dnses.add(mDefaultDns); 2790 if (DBG) { 2791 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2792 } 2793 } 2794 2795 try { 2796 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2797 2798 for (InetAddress dns : dnses) { 2799 ++last; 2800 String key = "net.dns" + last; 2801 String value = dns.getHostAddress(); 2802 SystemProperties.set(key, value); 2803 } 2804 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2805 String key = "net.dns" + i; 2806 SystemProperties.set(key, ""); 2807 } 2808 mNumDnsEntries = last; 2809 } catch (Exception e) { 2810 loge("exception setting default dns interface: " + e); 2811 } 2812 } 2813 2814 private void handleDnsConfigurationChange(int netType) { 2815 // add default net's dns entries 2816 NetworkStateTracker nt = mNetTrackers[netType]; 2817 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2818 LinkProperties p = nt.getLinkProperties(); 2819 if (p == null) return; 2820 Collection<InetAddress> dnses = p.getDnses(); 2821 int netId = nt.getNetwork().netId; 2822 if (mNetConfigs[netType].isDefault()) { 2823 String network = nt.getNetworkInfo().getTypeName(); 2824 synchronized (mDnsLock) { 2825 updateDnsLocked(network, netId, dnses, p.getDomains()); 2826 } 2827 } else { 2828 try { 2829 mNetd.setDnsServersForNetwork(netId, 2830 NetworkUtils.makeStrings(dnses), p.getDomains()); 2831 } catch (Exception e) { 2832 if (DBG) loge("exception setting dns servers: " + e); 2833 } 2834 // set per-pid dns for attached secondary nets 2835 List<Integer> pids = mNetRequestersPids[netType]; 2836 for (Integer pid : pids) { 2837 try { 2838 // TODO: Reimplement this via local variable in bionic. 2839 // mNetd.setDnsNetworkForPid(netId, pid); 2840 } catch (Exception e) { 2841 Slog.e(TAG, "exception setting interface for pid: " + e); 2842 } 2843 } 2844 } 2845 flushVmDnsCache(); 2846 } 2847 } 2848 2849 private int getRestoreDefaultNetworkDelay(int networkType) { 2850 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2851 NETWORK_RESTORE_DELAY_PROP_NAME); 2852 if(restoreDefaultNetworkDelayStr != null && 2853 restoreDefaultNetworkDelayStr.length() != 0) { 2854 try { 2855 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2856 } catch (NumberFormatException e) { 2857 } 2858 } 2859 // if the system property isn't set, use the value for the apn type 2860 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2861 2862 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2863 (mNetConfigs[networkType] != null)) { 2864 ret = mNetConfigs[networkType].restoreTime; 2865 } 2866 return ret; 2867 } 2868 2869 @Override 2870 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2871 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2872 if (mContext.checkCallingOrSelfPermission( 2873 android.Manifest.permission.DUMP) 2874 != PackageManager.PERMISSION_GRANTED) { 2875 pw.println("Permission Denial: can't dump ConnectivityService " + 2876 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2877 Binder.getCallingUid()); 2878 return; 2879 } 2880 2881 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 2882 pw.print("Active default network: "); 2883 if (defaultNai == null) { 2884 pw.println("none"); 2885 } else { 2886 pw.println(defaultNai.network.netId); 2887 } 2888 pw.println(); 2889 2890 pw.println("Current Networks:"); 2891 pw.increaseIndent(); 2892 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2893 pw.println(nai.toString()); 2894 pw.increaseIndent(); 2895 pw.println("Requests:"); 2896 pw.increaseIndent(); 2897 for (int i = 0; i < nai.networkRequests.size(); i++) { 2898 pw.println(nai.networkRequests.valueAt(i).toString()); 2899 } 2900 pw.decreaseIndent(); 2901 pw.println("Lingered:"); 2902 pw.increaseIndent(); 2903 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 2904 pw.decreaseIndent(); 2905 pw.decreaseIndent(); 2906 } 2907 pw.decreaseIndent(); 2908 pw.println(); 2909 2910 pw.println("Network Requests:"); 2911 pw.increaseIndent(); 2912 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2913 pw.println(nri.toString()); 2914 } 2915 pw.println(); 2916 pw.decreaseIndent(); 2917 2918 synchronized (this) { 2919 pw.println("NetworkTranstionWakeLock is currently " + 2920 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2921 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2922 } 2923 pw.println(); 2924 2925 mTethering.dump(fd, pw, args); 2926 2927 if (mInetLog != null) { 2928 pw.println(); 2929 pw.println("Inet condition reports:"); 2930 pw.increaseIndent(); 2931 for(int i = 0; i < mInetLog.size(); i++) { 2932 pw.println(mInetLog.get(i)); 2933 } 2934 pw.decreaseIndent(); 2935 } 2936 } 2937 2938 // must be stateless - things change under us. 2939 private class NetworkStateTrackerHandler extends Handler { 2940 public NetworkStateTrackerHandler(Looper looper) { 2941 super(looper); 2942 } 2943 2944 @Override 2945 public void handleMessage(Message msg) { 2946 NetworkInfo info; 2947 switch (msg.what) { 2948 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2949 handleAsyncChannelHalfConnect(msg); 2950 break; 2951 } 2952 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2953 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2954 if (nai != null) nai.asyncChannel.disconnect(); 2955 break; 2956 } 2957 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2958 handleAsyncChannelDisconnected(msg); 2959 break; 2960 } 2961 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2962 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2963 if (nai == null) { 2964 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 2965 } else { 2966 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 2967 } 2968 break; 2969 } 2970 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2971 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2972 if (nai == null) { 2973 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 2974 } else { 2975 LinkProperties oldLp = nai.linkProperties; 2976 nai.linkProperties = (LinkProperties)msg.obj; 2977 updateLinkProperties(nai, oldLp); 2978 } 2979 break; 2980 } 2981 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2982 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2983 if (nai == null) { 2984 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 2985 break; 2986 } 2987 info = (NetworkInfo) msg.obj; 2988 updateNetworkInfo(nai, info); 2989 break; 2990 } 2991 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 2992 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2993 handleConnectionValidated(nai); 2994 break; 2995 } 2996 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2997 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2998 handleLingerComplete(nai); 2999 break; 3000 } 3001 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3002 info = (NetworkInfo) msg.obj; 3003 NetworkInfo.State state = info.getState(); 3004 3005 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3006 (state == NetworkInfo.State.DISCONNECTED) || 3007 (state == NetworkInfo.State.SUSPENDED)) { 3008 log("ConnectivityChange for " + 3009 info.getTypeName() + ": " + 3010 state + "/" + info.getDetailedState()); 3011 } 3012 3013 // Since mobile has the notion of a network/apn that can be used for 3014 // provisioning we need to check every time we're connected as 3015 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3016 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3017 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3018 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3019 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3020 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3021 Settings.Global.DEVICE_PROVISIONED, 0)) 3022 && (((state == NetworkInfo.State.CONNECTED) 3023 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3024 || info.isConnectedToProvisioningNetwork())) { 3025 log("ConnectivityChange checkMobileProvisioning for" 3026 + " TYPE_MOBILE or ProvisioningNetwork"); 3027 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3028 } 3029 3030 EventLogTags.writeConnectivityStateChanged( 3031 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3032 3033 if (info.isConnectedToProvisioningNetwork()) { 3034 /** 3035 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3036 * for now its an in between network, its a network that 3037 * is actually a default network but we don't want it to be 3038 * announced as such to keep background applications from 3039 * trying to use it. It turns out that some still try so we 3040 * take the additional step of clearing any default routes 3041 * to the link that may have incorrectly setup by the lower 3042 * levels. 3043 */ 3044 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3045 if (DBG) { 3046 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3047 } 3048 3049 // Clear any default routes setup by the radio so 3050 // any activity by applications trying to use this 3051 // connection will fail until the provisioning network 3052 // is enabled. 3053 for (RouteInfo r : lp.getRoutes()) { 3054 removeRoute(lp, r, TO_DEFAULT_TABLE, 3055 mNetTrackers[info.getType()].getNetwork().netId); 3056 } 3057 } else if (state == NetworkInfo.State.DISCONNECTED) { 3058 } else if (state == NetworkInfo.State.SUSPENDED) { 3059 } else if (state == NetworkInfo.State.CONNECTED) { 3060 // handleConnect(info); 3061 } 3062 if (mLockdownTracker != null) { 3063 mLockdownTracker.onNetworkInfoChanged(info); 3064 } 3065 break; 3066 } 3067 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3068 info = (NetworkInfo) msg.obj; 3069 // TODO: Temporary allowing network configuration 3070 // change not resetting sockets. 3071 // @see bug/4455071 3072 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3073 false); 3074 break; 3075 } 3076 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3077 info = (NetworkInfo) msg.obj; 3078 int type = info.getType(); 3079 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3080 break; 3081 } 3082 } 3083 } 3084 } 3085 3086 private void handleAsyncChannelHalfConnect(Message msg) { 3087 AsyncChannel ac = (AsyncChannel) msg.obj; 3088 if (mNetworkFactories.contains(ac)) { 3089 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3090 if (VDBG) log("NetworkFactory connected"); 3091 // A network factory has connected. Send it all current NetworkRequests. 3092 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3093 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3094 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, 3095 (nai != null ? nai.currentScore : 0), 0, nri.request); 3096 } 3097 } else { 3098 loge("Error connecting NetworkFactory"); 3099 mNetworkFactories.remove(ac); 3100 } 3101 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3102 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3103 if (VDBG) log("NetworkAgent connected"); 3104 // A network agent has requested a connection. Establish the connection. 3105 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3106 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3107 } else { 3108 loge("Error connecting NetworkAgent"); 3109 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3110 try { 3111 mNetworkAgentInfoForType[nai.networkInfo.getType()].remove(nai); 3112 } catch (NullPointerException e) {} 3113 if (nai != null) { 3114 mNetworkForNetId.remove(nai.network.netId); 3115 } 3116 } 3117 } 3118 } 3119 private void handleAsyncChannelDisconnected(Message msg) { 3120 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3121 if (nai != null) { 3122 if (DBG) { 3123 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3124 } 3125 // A network agent has disconnected. 3126 // Tell netd to clean up the configuration for this network 3127 // (routing rules, DNS, etc). 3128 try { 3129 mNetd.removeNetwork(nai.network.netId); 3130 } catch (Exception e) { 3131 loge("Exception removing network: " + e); 3132 } 3133 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3134 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3135 mNetworkAgentInfos.remove(msg.replyTo); 3136 updateClat(null, nai.linkProperties, nai); 3137 try { 3138 mNetworkAgentInfoForType[nai.networkInfo.getType()].remove(nai); 3139 } catch (NullPointerException e) {} 3140 3141 mNetworkForNetId.remove(nai.network.netId); 3142 // Since we've lost the network, go through all the requests that 3143 // it was satisfying and see if any other factory can satisfy them. 3144 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3145 for (int i = 0; i < nai.networkRequests.size(); i++) { 3146 NetworkRequest request = nai.networkRequests.valueAt(i); 3147 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3148 if (VDBG) { 3149 log(" checking request " + request + ", currentNetwork = " + 3150 currentNetwork != null ? currentNetwork.name() : "null"); 3151 } 3152 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3153 mNetworkForRequestId.remove(request.requestId); 3154 sendUpdatedScoreToFactories(request, 0); 3155 NetworkAgentInfo alternative = null; 3156 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3157 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3158 if (existing.networkInfo.isConnected() && 3159 request.networkCapabilities.satisfiedByNetworkCapabilities( 3160 existing.networkCapabilities) && 3161 (alternative == null || 3162 alternative.currentScore < existing.currentScore)) { 3163 alternative = existing; 3164 } 3165 } 3166 if (alternative != null && !toActivate.contains(alternative)) { 3167 toActivate.add(alternative); 3168 } 3169 } 3170 } 3171 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3172 removeDataActivityTracking(nai); 3173 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3174 } 3175 for (NetworkAgentInfo networkToActivate : toActivate) { 3176 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3177 } 3178 } 3179 } 3180 3181 private void handleRegisterNetworkRequest(Message msg) { 3182 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3183 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3184 int score = 0; 3185 3186 // Check for the best currently alive network that satisfies this request 3187 NetworkAgentInfo bestNetwork = null; 3188 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3189 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3190 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3191 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3192 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3193 bestNetwork = network; 3194 } 3195 } 3196 } 3197 if (bestNetwork != null) { 3198 if (VDBG) log("using " + bestNetwork.name()); 3199 bestNetwork.networkRequests.put(nri.request.requestId, nri.request); 3200 notifyNetworkCallback(bestNetwork, nri); 3201 score = bestNetwork.currentScore; 3202 } 3203 mNetworkRequests.put(nri.request, nri); 3204 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3205 if (DBG) log("sending new NetworkRequest to factories"); 3206 for (AsyncChannel ac : mNetworkFactories) { 3207 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, score, 0, nri.request); 3208 } 3209 } 3210 } 3211 3212 private void handleReleaseNetworkRequest(NetworkRequest request) { 3213 if (DBG) log("releasing NetworkRequest " + request); 3214 NetworkRequestInfo nri = mNetworkRequests.remove(request); 3215 if (nri != null) { 3216 // tell the network currently servicing this that it's no longer interested 3217 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3218 if (affectedNetwork != null) { 3219 mNetworkForRequestId.remove(nri.request.requestId); 3220 affectedNetwork.networkRequests.remove(nri.request.requestId); 3221 if (VDBG) { 3222 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3223 affectedNetwork.networkRequests.size() + " requests."); 3224 } 3225 } 3226 3227 if (nri.isRequest) { 3228 for (AsyncChannel factory : mNetworkFactories) { 3229 factory.sendMessage(NetworkFactoryProtocol.CMD_CANCEL_REQUEST, nri.request); 3230 } 3231 3232 if (affectedNetwork != null) { 3233 // check if this network still has live requests - otherwise, tear down 3234 // TODO - probably push this to the NF/NA 3235 boolean keep = false; 3236 for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) { 3237 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3238 if (mNetworkRequests.get(r).isRequest) { 3239 keep = true; 3240 break; 3241 } 3242 } 3243 if (keep == false) { 3244 if (DBG) log("no live requests for " + affectedNetwork.name() + 3245 "; disconnecting"); 3246 affectedNetwork.asyncChannel.disconnect(); 3247 } 3248 } 3249 } 3250 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3251 } 3252 } 3253 3254 private class InternalHandler extends Handler { 3255 public InternalHandler(Looper looper) { 3256 super(looper); 3257 } 3258 3259 @Override 3260 public void handleMessage(Message msg) { 3261 NetworkInfo info; 3262 switch (msg.what) { 3263 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3264 String causedBy = null; 3265 synchronized (ConnectivityService.this) { 3266 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3267 mNetTransitionWakeLock.isHeld()) { 3268 mNetTransitionWakeLock.release(); 3269 causedBy = mNetTransitionWakeLockCausedBy; 3270 } 3271 } 3272 if (causedBy != null) { 3273 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3274 } 3275 break; 3276 } 3277 case EVENT_RESTORE_DEFAULT_NETWORK: { 3278 FeatureUser u = (FeatureUser)msg.obj; 3279 u.expire(); 3280 break; 3281 } 3282 case EVENT_INET_CONDITION_CHANGE: { 3283 int netType = msg.arg1; 3284 int condition = msg.arg2; 3285 handleInetConditionChange(netType, condition); 3286 break; 3287 } 3288 case EVENT_INET_CONDITION_HOLD_END: { 3289 int netType = msg.arg1; 3290 int sequence = msg.arg2; 3291 handleInetConditionHoldEnd(netType, sequence); 3292 break; 3293 } 3294 case EVENT_SET_MOBILE_DATA: { 3295 boolean enabled = (msg.arg1 == ENABLED); 3296 handleSetMobileData(enabled); 3297 break; 3298 } 3299 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3300 handleDeprecatedGlobalHttpProxy(); 3301 break; 3302 } 3303 case EVENT_SET_DEPENDENCY_MET: { 3304 boolean met = (msg.arg1 == ENABLED); 3305 handleSetDependencyMet(msg.arg2, met); 3306 break; 3307 } 3308 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3309 Intent intent = (Intent)msg.obj; 3310 sendStickyBroadcast(intent); 3311 break; 3312 } 3313 case EVENT_SET_POLICY_DATA_ENABLE: { 3314 final int networkType = msg.arg1; 3315 final boolean enabled = msg.arg2 == ENABLED; 3316 handleSetPolicyDataEnable(networkType, enabled); 3317 break; 3318 } 3319 case EVENT_VPN_STATE_CHANGED: { 3320 if (mLockdownTracker != null) { 3321 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3322 } 3323 break; 3324 } 3325 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3326 int tag = mEnableFailFastMobileDataTag.get(); 3327 if (msg.arg1 == tag) { 3328 MobileDataStateTracker mobileDst = 3329 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3330 if (mobileDst != null) { 3331 mobileDst.setEnableFailFastMobileData(msg.arg2); 3332 } 3333 } else { 3334 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3335 + " != tag:" + tag); 3336 } 3337 break; 3338 } 3339 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3340 handleNetworkSamplingTimeout(); 3341 break; 3342 } 3343 case EVENT_PROXY_HAS_CHANGED: { 3344 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3345 break; 3346 } 3347 case EVENT_REGISTER_NETWORK_FACTORY: { 3348 handleRegisterNetworkFactory((Messenger)msg.obj); 3349 break; 3350 } 3351 case EVENT_REGISTER_NETWORK_AGENT: { 3352 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3353 break; 3354 } 3355 case EVENT_REGISTER_NETWORK_REQUEST: 3356 case EVENT_REGISTER_NETWORK_LISTENER: { 3357 handleRegisterNetworkRequest(msg); 3358 break; 3359 } 3360 case EVENT_RELEASE_NETWORK_REQUEST: { 3361 handleReleaseNetworkRequest((NetworkRequest) msg.obj); 3362 break; 3363 } 3364 } 3365 } 3366 } 3367 3368 // javadoc from interface 3369 public int tether(String iface) { 3370 enforceTetherChangePermission(); 3371 3372 if (isTetheringSupported()) { 3373 return mTethering.tether(iface); 3374 } else { 3375 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3376 } 3377 } 3378 3379 // javadoc from interface 3380 public int untether(String iface) { 3381 enforceTetherChangePermission(); 3382 3383 if (isTetheringSupported()) { 3384 return mTethering.untether(iface); 3385 } else { 3386 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3387 } 3388 } 3389 3390 // javadoc from interface 3391 public int getLastTetherError(String iface) { 3392 enforceTetherAccessPermission(); 3393 3394 if (isTetheringSupported()) { 3395 return mTethering.getLastTetherError(iface); 3396 } else { 3397 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3398 } 3399 } 3400 3401 // TODO - proper iface API for selection by property, inspection, etc 3402 public String[] getTetherableUsbRegexs() { 3403 enforceTetherAccessPermission(); 3404 if (isTetheringSupported()) { 3405 return mTethering.getTetherableUsbRegexs(); 3406 } else { 3407 return new String[0]; 3408 } 3409 } 3410 3411 public String[] getTetherableWifiRegexs() { 3412 enforceTetherAccessPermission(); 3413 if (isTetheringSupported()) { 3414 return mTethering.getTetherableWifiRegexs(); 3415 } else { 3416 return new String[0]; 3417 } 3418 } 3419 3420 public String[] getTetherableBluetoothRegexs() { 3421 enforceTetherAccessPermission(); 3422 if (isTetheringSupported()) { 3423 return mTethering.getTetherableBluetoothRegexs(); 3424 } else { 3425 return new String[0]; 3426 } 3427 } 3428 3429 public int setUsbTethering(boolean enable) { 3430 enforceTetherChangePermission(); 3431 if (isTetheringSupported()) { 3432 return mTethering.setUsbTethering(enable); 3433 } else { 3434 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3435 } 3436 } 3437 3438 // TODO - move iface listing, queries, etc to new module 3439 // javadoc from interface 3440 public String[] getTetherableIfaces() { 3441 enforceTetherAccessPermission(); 3442 return mTethering.getTetherableIfaces(); 3443 } 3444 3445 public String[] getTetheredIfaces() { 3446 enforceTetherAccessPermission(); 3447 return mTethering.getTetheredIfaces(); 3448 } 3449 3450 public String[] getTetheringErroredIfaces() { 3451 enforceTetherAccessPermission(); 3452 return mTethering.getErroredIfaces(); 3453 } 3454 3455 // if ro.tether.denied = true we default to no tethering 3456 // gservices could set the secure setting to 1 though to enable it on a build where it 3457 // had previously been turned off. 3458 public boolean isTetheringSupported() { 3459 enforceTetherAccessPermission(); 3460 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3461 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3462 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3463 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3464 mTethering.getTetherableWifiRegexs().length != 0 || 3465 mTethering.getTetherableBluetoothRegexs().length != 0) && 3466 mTethering.getUpstreamIfaceTypes().length != 0); 3467 } 3468 3469 // An API NetworkStateTrackers can call when they lose their network. 3470 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3471 // whichever happens first. The timer is started by the first caller and not 3472 // restarted by subsequent callers. 3473 public void requestNetworkTransitionWakelock(String forWhom) { 3474 enforceConnectivityInternalPermission(); 3475 synchronized (this) { 3476 if (mNetTransitionWakeLock.isHeld()) return; 3477 mNetTransitionWakeLockSerialNumber++; 3478 mNetTransitionWakeLock.acquire(); 3479 mNetTransitionWakeLockCausedBy = forWhom; 3480 } 3481 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3482 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3483 mNetTransitionWakeLockSerialNumber, 0), 3484 mNetTransitionWakeLockTimeout); 3485 return; 3486 } 3487 3488 // 100 percent is full good, 0 is full bad. 3489 public void reportInetCondition(int networkType, int percentage) { 3490 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3491 mContext.enforceCallingOrSelfPermission( 3492 android.Manifest.permission.STATUS_BAR, 3493 "ConnectivityService"); 3494 3495 if (DBG) { 3496 int pid = getCallingPid(); 3497 int uid = getCallingUid(); 3498 String s = pid + "(" + uid + ") reports inet is " + 3499 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3500 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3501 mInetLog.add(s); 3502 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3503 mInetLog.remove(0); 3504 } 3505 } 3506 mHandler.sendMessage(mHandler.obtainMessage( 3507 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3508 } 3509 3510 public void reportBadNetwork(Network network) { 3511 //TODO 3512 } 3513 3514 private void handleInetConditionChange(int netType, int condition) { 3515 if (mActiveDefaultNetwork == -1) { 3516 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3517 return; 3518 } 3519 if (mActiveDefaultNetwork != netType) { 3520 if (DBG) log("handleInetConditionChange: net=" + netType + 3521 " != default=" + mActiveDefaultNetwork + " - ignore"); 3522 return; 3523 } 3524 if (VDBG) { 3525 log("handleInetConditionChange: net=" + 3526 netType + ", condition=" + condition + 3527 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3528 } 3529 mDefaultInetCondition = condition; 3530 int delay; 3531 if (mInetConditionChangeInFlight == false) { 3532 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3533 // setup a new hold to debounce this 3534 if (mDefaultInetCondition > 50) { 3535 delay = Settings.Global.getInt(mContext.getContentResolver(), 3536 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3537 } else { 3538 delay = Settings.Global.getInt(mContext.getContentResolver(), 3539 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3540 } 3541 mInetConditionChangeInFlight = true; 3542 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3543 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3544 } else { 3545 // we've set the new condition, when this hold ends that will get picked up 3546 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3547 } 3548 } 3549 3550 private void handleInetConditionHoldEnd(int netType, int sequence) { 3551 if (DBG) { 3552 log("handleInetConditionHoldEnd: net=" + netType + 3553 ", condition=" + mDefaultInetCondition + 3554 ", published condition=" + mDefaultInetConditionPublished); 3555 } 3556 mInetConditionChangeInFlight = false; 3557 3558 if (mActiveDefaultNetwork == -1) { 3559 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3560 return; 3561 } 3562 if (mDefaultConnectionSequence != sequence) { 3563 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3564 return; 3565 } 3566 // TODO: Figure out why this optimization sometimes causes a 3567 // change in mDefaultInetCondition to be missed and the 3568 // UI to not be updated. 3569 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3570 // if (DBG) log("no change in condition - aborting"); 3571 // return; 3572 //} 3573 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3574 if (networkInfo.isConnected() == false) { 3575 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3576 return; 3577 } 3578 mDefaultInetConditionPublished = mDefaultInetCondition; 3579 sendInetConditionBroadcast(networkInfo); 3580 return; 3581 } 3582 3583 public ProxyInfo getProxy() { 3584 // this information is already available as a world read/writable jvm property 3585 // so this API change wouldn't have a benifit. It also breaks the passing 3586 // of proxy info to all the JVMs. 3587 // enforceAccessPermission(); 3588 synchronized (mProxyLock) { 3589 ProxyInfo ret = mGlobalProxy; 3590 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3591 return ret; 3592 } 3593 } 3594 3595 public void setGlobalProxy(ProxyInfo proxyProperties) { 3596 enforceConnectivityInternalPermission(); 3597 3598 synchronized (mProxyLock) { 3599 if (proxyProperties == mGlobalProxy) return; 3600 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3601 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3602 3603 String host = ""; 3604 int port = 0; 3605 String exclList = ""; 3606 String pacFileUrl = ""; 3607 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3608 (proxyProperties.getPacFileUrl() != null))) { 3609 if (!proxyProperties.isValid()) { 3610 if (DBG) 3611 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3612 return; 3613 } 3614 mGlobalProxy = new ProxyInfo(proxyProperties); 3615 host = mGlobalProxy.getHost(); 3616 port = mGlobalProxy.getPort(); 3617 exclList = mGlobalProxy.getExclusionListAsString(); 3618 if (proxyProperties.getPacFileUrl() != null) { 3619 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3620 } 3621 } else { 3622 mGlobalProxy = null; 3623 } 3624 ContentResolver res = mContext.getContentResolver(); 3625 final long token = Binder.clearCallingIdentity(); 3626 try { 3627 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3628 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3629 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3630 exclList); 3631 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3632 } finally { 3633 Binder.restoreCallingIdentity(token); 3634 } 3635 } 3636 3637 if (mGlobalProxy == null) { 3638 proxyProperties = mDefaultProxy; 3639 } 3640 sendProxyBroadcast(proxyProperties); 3641 } 3642 3643 private void loadGlobalProxy() { 3644 ContentResolver res = mContext.getContentResolver(); 3645 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3646 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3647 String exclList = Settings.Global.getString(res, 3648 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3649 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3650 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3651 ProxyInfo proxyProperties; 3652 if (!TextUtils.isEmpty(pacFileUrl)) { 3653 proxyProperties = new ProxyInfo(pacFileUrl); 3654 } else { 3655 proxyProperties = new ProxyInfo(host, port, exclList); 3656 } 3657 if (!proxyProperties.isValid()) { 3658 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3659 return; 3660 } 3661 3662 synchronized (mProxyLock) { 3663 mGlobalProxy = proxyProperties; 3664 } 3665 } 3666 } 3667 3668 public ProxyInfo getGlobalProxy() { 3669 // this information is already available as a world read/writable jvm property 3670 // so this API change wouldn't have a benifit. It also breaks the passing 3671 // of proxy info to all the JVMs. 3672 // enforceAccessPermission(); 3673 synchronized (mProxyLock) { 3674 return mGlobalProxy; 3675 } 3676 } 3677 3678 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3679 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3680 && (proxy.getPacFileUrl() == null)) { 3681 proxy = null; 3682 } 3683 synchronized (mProxyLock) { 3684 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3685 if (mDefaultProxy == proxy) return; // catches repeated nulls 3686 if (proxy != null && !proxy.isValid()) { 3687 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3688 return; 3689 } 3690 3691 // This call could be coming from the PacManager, containing the port of the local 3692 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3693 // global (to get the correct local port), and send a broadcast. 3694 // TODO: Switch PacManager to have its own message to send back rather than 3695 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3696 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3697 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3698 mGlobalProxy = proxy; 3699 sendProxyBroadcast(mGlobalProxy); 3700 return; 3701 } 3702 mDefaultProxy = proxy; 3703 3704 if (mGlobalProxy != null) return; 3705 if (!mDefaultProxyDisabled) { 3706 sendProxyBroadcast(proxy); 3707 } 3708 } 3709 } 3710 3711 private void handleDeprecatedGlobalHttpProxy() { 3712 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3713 Settings.Global.HTTP_PROXY); 3714 if (!TextUtils.isEmpty(proxy)) { 3715 String data[] = proxy.split(":"); 3716 if (data.length == 0) { 3717 return; 3718 } 3719 3720 String proxyHost = data[0]; 3721 int proxyPort = 8080; 3722 if (data.length > 1) { 3723 try { 3724 proxyPort = Integer.parseInt(data[1]); 3725 } catch (NumberFormatException e) { 3726 return; 3727 } 3728 } 3729 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3730 setGlobalProxy(p); 3731 } 3732 } 3733 3734 private void sendProxyBroadcast(ProxyInfo proxy) { 3735 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3736 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3737 if (DBG) log("sending Proxy Broadcast for " + proxy); 3738 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3739 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3740 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3741 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3742 final long ident = Binder.clearCallingIdentity(); 3743 try { 3744 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3745 } finally { 3746 Binder.restoreCallingIdentity(ident); 3747 } 3748 } 3749 3750 private static class SettingsObserver extends ContentObserver { 3751 private int mWhat; 3752 private Handler mHandler; 3753 SettingsObserver(Handler handler, int what) { 3754 super(handler); 3755 mHandler = handler; 3756 mWhat = what; 3757 } 3758 3759 void observe(Context context) { 3760 ContentResolver resolver = context.getContentResolver(); 3761 resolver.registerContentObserver(Settings.Global.getUriFor( 3762 Settings.Global.HTTP_PROXY), false, this); 3763 } 3764 3765 @Override 3766 public void onChange(boolean selfChange) { 3767 mHandler.obtainMessage(mWhat).sendToTarget(); 3768 } 3769 } 3770 3771 private static void log(String s) { 3772 Slog.d(TAG, s); 3773 } 3774 3775 private static void loge(String s) { 3776 Slog.e(TAG, s); 3777 } 3778 3779 int convertFeatureToNetworkType(int networkType, String feature) { 3780 int usedNetworkType = networkType; 3781 3782 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3783 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3784 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3785 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3786 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3787 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3788 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3789 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3790 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3791 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3792 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3793 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3794 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3795 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3796 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3797 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3798 } else { 3799 Slog.e(TAG, "Can't match any mobile netTracker!"); 3800 } 3801 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3802 if (TextUtils.equals(feature, "p2p")) { 3803 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3804 } else { 3805 Slog.e(TAG, "Can't match any wifi netTracker!"); 3806 } 3807 } else { 3808 Slog.e(TAG, "Unexpected network type"); 3809 } 3810 return usedNetworkType; 3811 } 3812 3813 private static <T> T checkNotNull(T value, String message) { 3814 if (value == null) { 3815 throw new NullPointerException(message); 3816 } 3817 return value; 3818 } 3819 3820 /** 3821 * Protect a socket from VPN routing rules. This method is used by 3822 * VpnBuilder and not available in ConnectivityManager. Permissions 3823 * are checked in Vpn class. 3824 * @hide 3825 */ 3826 @Override 3827 public boolean protectVpn(ParcelFileDescriptor socket) { 3828 throwIfLockdownEnabled(); 3829 try { 3830 int type = mActiveDefaultNetwork; 3831 int user = UserHandle.getUserId(Binder.getCallingUid()); 3832 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3833 synchronized(mVpns) { 3834 mVpns.get(user).protect(socket); 3835 } 3836 return true; 3837 } 3838 } catch (Exception e) { 3839 // ignore 3840 } finally { 3841 try { 3842 socket.close(); 3843 } catch (Exception e) { 3844 // ignore 3845 } 3846 } 3847 return false; 3848 } 3849 3850 /** 3851 * Prepare for a VPN application. This method is used by VpnDialogs 3852 * and not available in ConnectivityManager. Permissions are checked 3853 * in Vpn class. 3854 * @hide 3855 */ 3856 @Override 3857 public boolean prepareVpn(String oldPackage, String newPackage) { 3858 throwIfLockdownEnabled(); 3859 int user = UserHandle.getUserId(Binder.getCallingUid()); 3860 synchronized(mVpns) { 3861 return mVpns.get(user).prepare(oldPackage, newPackage); 3862 } 3863 } 3864 3865 @Override 3866 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3867 enforceMarkNetworkSocketPermission(); 3868 final long token = Binder.clearCallingIdentity(); 3869 try { 3870 int mark = mNetd.getMarkForUid(uid); 3871 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3872 if (mark == -1) { 3873 mark = 0; 3874 } 3875 NetworkUtils.markSocket(socket.getFd(), mark); 3876 } catch (RemoteException e) { 3877 } finally { 3878 Binder.restoreCallingIdentity(token); 3879 } 3880 } 3881 3882 /** 3883 * Configure a TUN interface and return its file descriptor. Parameters 3884 * are encoded and opaque to this class. This method is used by VpnBuilder 3885 * and not available in ConnectivityManager. Permissions are checked in 3886 * Vpn class. 3887 * @hide 3888 */ 3889 @Override 3890 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3891 throwIfLockdownEnabled(); 3892 int user = UserHandle.getUserId(Binder.getCallingUid()); 3893 synchronized(mVpns) { 3894 return mVpns.get(user).establish(config); 3895 } 3896 } 3897 3898 /** 3899 * Start legacy VPN, controlling native daemons as needed. Creates a 3900 * secondary thread to perform connection work, returning quickly. 3901 */ 3902 @Override 3903 public void startLegacyVpn(VpnProfile profile) { 3904 throwIfLockdownEnabled(); 3905 final LinkProperties egress = getActiveLinkProperties(); 3906 if (egress == null) { 3907 throw new IllegalStateException("Missing active network connection"); 3908 } 3909 int user = UserHandle.getUserId(Binder.getCallingUid()); 3910 synchronized(mVpns) { 3911 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3912 } 3913 } 3914 3915 /** 3916 * Return the information of the ongoing legacy VPN. This method is used 3917 * by VpnSettings and not available in ConnectivityManager. Permissions 3918 * are checked in Vpn class. 3919 * @hide 3920 */ 3921 @Override 3922 public LegacyVpnInfo getLegacyVpnInfo() { 3923 throwIfLockdownEnabled(); 3924 int user = UserHandle.getUserId(Binder.getCallingUid()); 3925 synchronized(mVpns) { 3926 return mVpns.get(user).getLegacyVpnInfo(); 3927 } 3928 } 3929 3930 /** 3931 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3932 * not available in ConnectivityManager. 3933 * Permissions are checked in Vpn class. 3934 * @hide 3935 */ 3936 @Override 3937 public VpnConfig getVpnConfig() { 3938 int user = UserHandle.getUserId(Binder.getCallingUid()); 3939 synchronized(mVpns) { 3940 return mVpns.get(user).getVpnConfig(); 3941 } 3942 } 3943 3944 /** 3945 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3946 * through NetworkStateTracker since it works differently. For example, it 3947 * needs to override DNS servers but never takes the default routes. It 3948 * relies on another data network, and it could keep existing connections 3949 * alive after reconnecting, switching between networks, or even resuming 3950 * from deep sleep. Calls from applications should be done synchronously 3951 * to avoid race conditions. As these are all hidden APIs, refactoring can 3952 * be done whenever a better abstraction is developed. 3953 */ 3954 public class VpnCallback { 3955 private VpnCallback() { 3956 } 3957 3958 public void onStateChanged(NetworkInfo info) { 3959 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3960 } 3961 3962 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3963 if (dnsServers == null) { 3964 restore(); 3965 return; 3966 } 3967 3968 // Convert DNS servers into addresses. 3969 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3970 for (String address : dnsServers) { 3971 // Double check the addresses and remove invalid ones. 3972 try { 3973 addresses.add(InetAddress.parseNumericAddress(address)); 3974 } catch (Exception e) { 3975 // ignore 3976 } 3977 } 3978 if (addresses.isEmpty()) { 3979 restore(); 3980 return; 3981 } 3982 3983 // Concatenate search domains into a string. 3984 StringBuilder buffer = new StringBuilder(); 3985 if (searchDomains != null) { 3986 for (String domain : searchDomains) { 3987 buffer.append(domain).append(' '); 3988 } 3989 } 3990 String domains = buffer.toString().trim(); 3991 3992 // Apply DNS changes. 3993 synchronized (mDnsLock) { 3994 // TODO: Re-enable this when the netId of the VPN is known. 3995 // updateDnsLocked("VPN", netId, addresses, domains); 3996 } 3997 3998 // Temporarily disable the default proxy (not global). 3999 synchronized (mProxyLock) { 4000 mDefaultProxyDisabled = true; 4001 if (mGlobalProxy == null && mDefaultProxy != null) { 4002 sendProxyBroadcast(null); 4003 } 4004 } 4005 4006 // TODO: support proxy per network. 4007 } 4008 4009 public void restore() { 4010 synchronized (mProxyLock) { 4011 mDefaultProxyDisabled = false; 4012 if (mGlobalProxy == null && mDefaultProxy != null) { 4013 sendProxyBroadcast(mDefaultProxy); 4014 } 4015 } 4016 } 4017 4018 public void protect(ParcelFileDescriptor socket) { 4019 try { 4020 final int mark = mNetd.getMarkForProtect(); 4021 NetworkUtils.markSocket(socket.getFd(), mark); 4022 } catch (RemoteException e) { 4023 } 4024 } 4025 4026 public void setRoutes(String interfaze, List<RouteInfo> routes) { 4027 for (RouteInfo route : routes) { 4028 try { 4029 mNetd.setMarkedForwardingRoute(interfaze, route); 4030 } catch (RemoteException e) { 4031 } 4032 } 4033 } 4034 4035 public void setMarkedForwarding(String interfaze) { 4036 try { 4037 mNetd.setMarkedForwarding(interfaze); 4038 } catch (RemoteException e) { 4039 } 4040 } 4041 4042 public void clearMarkedForwarding(String interfaze) { 4043 try { 4044 mNetd.clearMarkedForwarding(interfaze); 4045 } catch (RemoteException e) { 4046 } 4047 } 4048 4049 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 4050 int uidStart = uid * UserHandle.PER_USER_RANGE; 4051 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4052 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4053 } 4054 4055 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 4056 int uidStart = uid * UserHandle.PER_USER_RANGE; 4057 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4058 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4059 } 4060 4061 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 4062 boolean forwardDns) { 4063 // TODO: Re-enable this when the netId of the VPN is known. 4064 // try { 4065 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 4066 // } catch (RemoteException e) { 4067 // } 4068 4069 } 4070 4071 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 4072 boolean forwardDns) { 4073 // TODO: Re-enable this when the netId of the VPN is known. 4074 // try { 4075 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 4076 // } catch (RemoteException e) { 4077 // } 4078 4079 } 4080 } 4081 4082 @Override 4083 public boolean updateLockdownVpn() { 4084 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 4085 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 4086 return false; 4087 } 4088 4089 // Tear down existing lockdown if profile was removed 4090 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4091 if (mLockdownEnabled) { 4092 if (!mKeyStore.isUnlocked()) { 4093 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4094 return false; 4095 } 4096 4097 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4098 final VpnProfile profile = VpnProfile.decode( 4099 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4100 int user = UserHandle.getUserId(Binder.getCallingUid()); 4101 synchronized(mVpns) { 4102 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4103 profile)); 4104 } 4105 } else { 4106 setLockdownTracker(null); 4107 } 4108 4109 return true; 4110 } 4111 4112 /** 4113 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4114 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4115 */ 4116 private void setLockdownTracker(LockdownVpnTracker tracker) { 4117 // Shutdown any existing tracker 4118 final LockdownVpnTracker existing = mLockdownTracker; 4119 mLockdownTracker = null; 4120 if (existing != null) { 4121 existing.shutdown(); 4122 } 4123 4124 try { 4125 if (tracker != null) { 4126 mNetd.setFirewallEnabled(true); 4127 mNetd.setFirewallInterfaceRule("lo", true); 4128 mLockdownTracker = tracker; 4129 mLockdownTracker.init(); 4130 } else { 4131 mNetd.setFirewallEnabled(false); 4132 } 4133 } catch (RemoteException e) { 4134 // ignored; NMS lives inside system_server 4135 } 4136 } 4137 4138 private void throwIfLockdownEnabled() { 4139 if (mLockdownEnabled) { 4140 throw new IllegalStateException("Unavailable in lockdown mode"); 4141 } 4142 } 4143 4144 public void supplyMessenger(int networkType, Messenger messenger) { 4145 enforceConnectivityInternalPermission(); 4146 4147 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4148 mNetTrackers[networkType].supplyMessenger(messenger); 4149 } 4150 } 4151 4152 public int findConnectionTypeForIface(String iface) { 4153 enforceConnectivityInternalPermission(); 4154 4155 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4156 for (NetworkStateTracker tracker : mNetTrackers) { 4157 if (tracker != null) { 4158 LinkProperties lp = tracker.getLinkProperties(); 4159 if (lp != null && iface.equals(lp.getInterfaceName())) { 4160 return tracker.getNetworkInfo().getType(); 4161 } 4162 } 4163 } 4164 return ConnectivityManager.TYPE_NONE; 4165 } 4166 4167 /** 4168 * Have mobile data fail fast if enabled. 4169 * 4170 * @param enabled DctConstants.ENABLED/DISABLED 4171 */ 4172 private void setEnableFailFastMobileData(int enabled) { 4173 int tag; 4174 4175 if (enabled == DctConstants.ENABLED) { 4176 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4177 } else { 4178 tag = mEnableFailFastMobileDataTag.get(); 4179 } 4180 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4181 enabled)); 4182 } 4183 4184 private boolean isMobileDataStateTrackerReady() { 4185 MobileDataStateTracker mdst = 4186 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4187 return (mdst != null) && (mdst.isReady()); 4188 } 4189 4190 /** 4191 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4192 */ 4193 4194 /** 4195 * No connection was possible to the network. 4196 * This is NOT a warm sim. 4197 */ 4198 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4199 4200 /** 4201 * A connection was made to the internet, all is well. 4202 * This is NOT a warm sim. 4203 */ 4204 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4205 4206 /** 4207 * A connection was made but no dns server was available to resolve a name to address. 4208 * This is NOT a warm sim since provisioning network is supported. 4209 */ 4210 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4211 4212 /** 4213 * A connection was made but could not open a TCP connection. 4214 * This is NOT a warm sim since provisioning network is supported. 4215 */ 4216 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4217 4218 /** 4219 * A connection was made but there was a redirection, we appear to be in walled garden. 4220 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4221 */ 4222 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4223 4224 /** 4225 * The mobile network is a provisioning network. 4226 * This is an indication of a warm sim on a mobile network such as AT&T. 4227 */ 4228 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4229 4230 /** 4231 * The mobile network is provisioning 4232 */ 4233 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4234 4235 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4236 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4237 4238 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4239 4240 @Override 4241 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4242 int timeOutMs = -1; 4243 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4244 enforceConnectivityInternalPermission(); 4245 4246 final long token = Binder.clearCallingIdentity(); 4247 try { 4248 timeOutMs = suggestedTimeOutMs; 4249 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4250 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4251 } 4252 4253 // Check that mobile networks are supported 4254 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4255 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4256 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4257 return timeOutMs; 4258 } 4259 4260 // If we're already checking don't do it again 4261 // TODO: Add a queue of results... 4262 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4263 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4264 return timeOutMs; 4265 } 4266 4267 // Start off with mobile notification off 4268 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4269 4270 CheckMp checkMp = new CheckMp(mContext, this); 4271 CheckMp.CallBack cb = new CheckMp.CallBack() { 4272 @Override 4273 void onComplete(Integer result) { 4274 if (DBG) log("CheckMp.onComplete: result=" + result); 4275 NetworkInfo ni = 4276 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4277 switch(result) { 4278 case CMP_RESULT_CODE_CONNECTABLE: 4279 case CMP_RESULT_CODE_NO_CONNECTION: 4280 case CMP_RESULT_CODE_NO_DNS: 4281 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4282 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4283 break; 4284 } 4285 case CMP_RESULT_CODE_REDIRECTED: { 4286 if (DBG) log("CheckMp.onComplete: warm sim"); 4287 String url = getMobileProvisioningUrl(); 4288 if (TextUtils.isEmpty(url)) { 4289 url = getMobileRedirectedProvisioningUrl(); 4290 } 4291 if (TextUtils.isEmpty(url) == false) { 4292 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4293 setProvNotificationVisible(true, 4294 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4295 url); 4296 } else { 4297 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4298 } 4299 break; 4300 } 4301 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4302 String url = getMobileProvisioningUrl(); 4303 if (TextUtils.isEmpty(url) == false) { 4304 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4305 setProvNotificationVisible(true, 4306 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4307 url); 4308 // Mark that we've got a provisioning network and 4309 // Disable Mobile Data until user actually starts provisioning. 4310 mIsProvisioningNetwork.set(true); 4311 MobileDataStateTracker mdst = (MobileDataStateTracker) 4312 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4313 mdst.setInternalDataEnable(false); 4314 } else { 4315 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4316 } 4317 break; 4318 } 4319 case CMP_RESULT_CODE_IS_PROVISIONING: { 4320 // FIXME: Need to know when provisioning is done. Probably we can 4321 // check the completion status if successful we're done if we 4322 // "timedout" or still connected to provisioning APN turn off data? 4323 if (DBG) log("CheckMp.onComplete: provisioning started"); 4324 mIsStartingProvisioning.set(false); 4325 break; 4326 } 4327 default: { 4328 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4329 break; 4330 } 4331 } 4332 mIsCheckingMobileProvisioning.set(false); 4333 } 4334 }; 4335 CheckMp.Params params = 4336 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4337 if (DBG) log("checkMobileProvisioning: params=" + params); 4338 // TODO: Reenable when calls to the now defunct 4339 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4340 // This code should be moved to the Telephony code. 4341 // checkMp.execute(params); 4342 } finally { 4343 Binder.restoreCallingIdentity(token); 4344 if (DBG) log("checkMobileProvisioning: X"); 4345 } 4346 return timeOutMs; 4347 } 4348 4349 static class CheckMp extends 4350 AsyncTask<CheckMp.Params, Void, Integer> { 4351 private static final String CHECKMP_TAG = "CheckMp"; 4352 4353 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4354 private static boolean mTestingFailures; 4355 4356 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4357 private static final int MAX_LOOPS = 4; 4358 4359 // Number of milli-seconds to complete all of the retires 4360 public static final int MAX_TIMEOUT_MS = 60000; 4361 4362 // The socket should retry only 5 seconds, the default is longer 4363 private static final int SOCKET_TIMEOUT_MS = 5000; 4364 4365 // Sleep time for network errors 4366 private static final int NET_ERROR_SLEEP_SEC = 3; 4367 4368 // Sleep time for network route establishment 4369 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4370 4371 // Short sleep time for polling :( 4372 private static final int POLLING_SLEEP_SEC = 1; 4373 4374 private Context mContext; 4375 private ConnectivityService mCs; 4376 private TelephonyManager mTm; 4377 private Params mParams; 4378 4379 /** 4380 * Parameters for AsyncTask.execute 4381 */ 4382 static class Params { 4383 private String mUrl; 4384 private long mTimeOutMs; 4385 private CallBack mCb; 4386 4387 Params(String url, long timeOutMs, CallBack cb) { 4388 mUrl = url; 4389 mTimeOutMs = timeOutMs; 4390 mCb = cb; 4391 } 4392 4393 @Override 4394 public String toString() { 4395 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4396 } 4397 } 4398 4399 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4400 // issued by name or ip address, for Google its by name so when we construct 4401 // this HostnameVerifier we'll pass the original Uri and use it to verify 4402 // the host. If the host name in the original uril fails we'll test the 4403 // hostname parameter just incase things change. 4404 static class CheckMpHostnameVerifier implements HostnameVerifier { 4405 Uri mOrgUri; 4406 4407 CheckMpHostnameVerifier(Uri orgUri) { 4408 mOrgUri = orgUri; 4409 } 4410 4411 @Override 4412 public boolean verify(String hostname, SSLSession session) { 4413 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4414 String orgUriHost = mOrgUri.getHost(); 4415 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4416 if (DBG) { 4417 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4418 + " orgUriHost=" + orgUriHost); 4419 } 4420 return retVal; 4421 } 4422 } 4423 4424 /** 4425 * The call back object passed in Params. onComplete will be called 4426 * on the main thread. 4427 */ 4428 abstract static class CallBack { 4429 // Called on the main thread. 4430 abstract void onComplete(Integer result); 4431 } 4432 4433 public CheckMp(Context context, ConnectivityService cs) { 4434 if (Build.IS_DEBUGGABLE) { 4435 mTestingFailures = 4436 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4437 } else { 4438 mTestingFailures = false; 4439 } 4440 4441 mContext = context; 4442 mCs = cs; 4443 4444 // Setup access to TelephonyService we'll be using. 4445 mTm = (TelephonyManager) mContext.getSystemService( 4446 Context.TELEPHONY_SERVICE); 4447 } 4448 4449 /** 4450 * Get the default url to use for the test. 4451 */ 4452 public String getDefaultUrl() { 4453 // See http://go/clientsdns for usage approval 4454 String server = Settings.Global.getString(mContext.getContentResolver(), 4455 Settings.Global.CAPTIVE_PORTAL_SERVER); 4456 if (server == null) { 4457 server = "clients3.google.com"; 4458 } 4459 return "http://" + server + "/generate_204"; 4460 } 4461 4462 /** 4463 * Detect if its possible to connect to the http url. DNS based detection techniques 4464 * do not work at all hotspots. The best way to check is to perform a request to 4465 * a known address that fetches the data we expect. 4466 */ 4467 private synchronized Integer isMobileOk(Params params) { 4468 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4469 Uri orgUri = Uri.parse(params.mUrl); 4470 Random rand = new Random(); 4471 mParams = params; 4472 4473 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4474 result = CMP_RESULT_CODE_NO_CONNECTION; 4475 log("isMobileOk: X not mobile capable result=" + result); 4476 return result; 4477 } 4478 4479 if (mCs.mIsStartingProvisioning.get()) { 4480 result = CMP_RESULT_CODE_IS_PROVISIONING; 4481 log("isMobileOk: X is provisioning result=" + result); 4482 return result; 4483 } 4484 4485 // See if we've already determined we've got a provisioning connection, 4486 // if so we don't need to do anything active. 4487 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4488 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4489 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4490 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4491 4492 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4493 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4494 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4495 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4496 4497 if (isDefaultProvisioning || isHipriProvisioning) { 4498 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4499 log("isMobileOk: X default || hipri is provisioning result=" + result); 4500 return result; 4501 } 4502 4503 try { 4504 // Continue trying to connect until time has run out 4505 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4506 4507 if (!mCs.isMobileDataStateTrackerReady()) { 4508 // Wait for MobileDataStateTracker to be ready. 4509 if (DBG) log("isMobileOk: mdst is not ready"); 4510 while(SystemClock.elapsedRealtime() < endTime) { 4511 if (mCs.isMobileDataStateTrackerReady()) { 4512 // Enable fail fast as we'll do retries here and use a 4513 // hipri connection so the default connection stays active. 4514 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4515 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4516 break; 4517 } 4518 sleep(POLLING_SLEEP_SEC); 4519 } 4520 } 4521 4522 log("isMobileOk: start hipri url=" + params.mUrl); 4523 4524 // First wait until we can start using hipri 4525 Binder binder = new Binder(); 4526 while(SystemClock.elapsedRealtime() < endTime) { 4527 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4528 Phone.FEATURE_ENABLE_HIPRI, binder); 4529 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4530 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4531 log("isMobileOk: hipri started"); 4532 break; 4533 } 4534 if (VDBG) log("isMobileOk: hipri not started yet"); 4535 result = CMP_RESULT_CODE_NO_CONNECTION; 4536 sleep(POLLING_SLEEP_SEC); 4537 } 4538 4539 // Continue trying to connect until time has run out 4540 while(SystemClock.elapsedRealtime() < endTime) { 4541 try { 4542 // Wait for hipri to connect. 4543 // TODO: Don't poll and handle situation where hipri fails 4544 // because default is retrying. See b/9569540 4545 NetworkInfo.State state = mCs 4546 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4547 if (state != NetworkInfo.State.CONNECTED) { 4548 if (true/*VDBG*/) { 4549 log("isMobileOk: not connected ni=" + 4550 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4551 } 4552 sleep(POLLING_SLEEP_SEC); 4553 result = CMP_RESULT_CODE_NO_CONNECTION; 4554 continue; 4555 } 4556 4557 // Hipri has started check if this is a provisioning url 4558 MobileDataStateTracker mdst = (MobileDataStateTracker) 4559 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4560 if (mdst.isProvisioningNetwork()) { 4561 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4562 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4563 return result; 4564 } else { 4565 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4566 } 4567 4568 // Get of the addresses associated with the url host. We need to use the 4569 // address otherwise HttpURLConnection object will use the name to get 4570 // the addresses and will try every address but that will bypass the 4571 // route to host we setup and the connection could succeed as the default 4572 // interface might be connected to the internet via wifi or other interface. 4573 InetAddress[] addresses; 4574 try { 4575 addresses = InetAddress.getAllByName(orgUri.getHost()); 4576 } catch (UnknownHostException e) { 4577 result = CMP_RESULT_CODE_NO_DNS; 4578 log("isMobileOk: X UnknownHostException result=" + result); 4579 return result; 4580 } 4581 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4582 4583 // Get the type of addresses supported by this link 4584 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4585 ConnectivityManager.TYPE_MOBILE_HIPRI); 4586 boolean linkHasIpv4 = lp.hasIPv4Address(); 4587 boolean linkHasIpv6 = lp.hasIPv6Address(); 4588 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4589 + " linkHasIpv6=" + linkHasIpv6); 4590 4591 final ArrayList<InetAddress> validAddresses = 4592 new ArrayList<InetAddress>(addresses.length); 4593 4594 for (InetAddress addr : addresses) { 4595 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4596 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4597 validAddresses.add(addr); 4598 } 4599 } 4600 4601 if (validAddresses.size() == 0) { 4602 return CMP_RESULT_CODE_NO_CONNECTION; 4603 } 4604 4605 int addrTried = 0; 4606 while (true) { 4607 // Loop through at most MAX_LOOPS valid addresses or until 4608 // we run out of time 4609 if (addrTried++ >= MAX_LOOPS) { 4610 log("isMobileOk: too many loops tried - giving up"); 4611 break; 4612 } 4613 if (SystemClock.elapsedRealtime() >= endTime) { 4614 log("isMobileOk: spend too much time - giving up"); 4615 break; 4616 } 4617 4618 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4619 validAddresses.size())); 4620 4621 // Make a route to host so we check the specific interface. 4622 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4623 hostAddr.getAddress(), null)) { 4624 // Wait a short time to be sure the route is established ?? 4625 log("isMobileOk:" 4626 + " wait to establish route to hostAddr=" + hostAddr); 4627 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4628 } else { 4629 log("isMobileOk:" 4630 + " could not establish route to hostAddr=" + hostAddr); 4631 // Wait a short time before the next attempt 4632 sleep(NET_ERROR_SLEEP_SEC); 4633 continue; 4634 } 4635 4636 // Rewrite the url to have numeric address to use the specific route 4637 // using http for half the attempts and https for the other half. 4638 // Doing https first and http second as on a redirected walled garden 4639 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4640 // handshake timed out" which we declare as 4641 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4642 // having http second we will be using logic used for some time. 4643 URL newUrl; 4644 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4645 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4646 orgUri.getPath()); 4647 log("isMobileOk: newUrl=" + newUrl); 4648 4649 HttpURLConnection urlConn = null; 4650 try { 4651 // Open the connection set the request headers and get the response 4652 urlConn = (HttpURLConnection)newUrl.openConnection( 4653 java.net.Proxy.NO_PROXY); 4654 if (scheme.equals("https")) { 4655 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4656 new CheckMpHostnameVerifier(orgUri)); 4657 } 4658 urlConn.setInstanceFollowRedirects(false); 4659 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4660 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4661 urlConn.setUseCaches(false); 4662 urlConn.setAllowUserInteraction(false); 4663 // Set the "Connection" to "Close" as by default "Keep-Alive" 4664 // is used which is useless in this case. 4665 urlConn.setRequestProperty("Connection", "close"); 4666 int responseCode = urlConn.getResponseCode(); 4667 4668 // For debug display the headers 4669 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4670 log("isMobileOk: headers=" + headers); 4671 4672 // Close the connection 4673 urlConn.disconnect(); 4674 urlConn = null; 4675 4676 if (mTestingFailures) { 4677 // Pretend no connection, this tests using http and https 4678 result = CMP_RESULT_CODE_NO_CONNECTION; 4679 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4680 continue; 4681 } 4682 4683 if (responseCode == 204) { 4684 // Return 4685 result = CMP_RESULT_CODE_CONNECTABLE; 4686 log("isMobileOk: X got expected responseCode=" + responseCode 4687 + " result=" + result); 4688 return result; 4689 } else { 4690 // Retry to be sure this was redirected, we've gotten 4691 // occasions where a server returned 200 even though 4692 // the device didn't have a "warm" sim. 4693 log("isMobileOk: not expected responseCode=" + responseCode); 4694 // TODO - it would be nice in the single-address case to do 4695 // another DNS resolve here, but flushing the cache is a bit 4696 // heavy-handed. 4697 result = CMP_RESULT_CODE_REDIRECTED; 4698 } 4699 } catch (Exception e) { 4700 log("isMobileOk: HttpURLConnection Exception" + e); 4701 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4702 if (urlConn != null) { 4703 urlConn.disconnect(); 4704 urlConn = null; 4705 } 4706 sleep(NET_ERROR_SLEEP_SEC); 4707 continue; 4708 } 4709 } 4710 log("isMobileOk: X loops|timed out result=" + result); 4711 return result; 4712 } catch (Exception e) { 4713 log("isMobileOk: Exception e=" + e); 4714 continue; 4715 } 4716 } 4717 log("isMobileOk: timed out"); 4718 } finally { 4719 log("isMobileOk: F stop hipri"); 4720 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4721 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4722 Phone.FEATURE_ENABLE_HIPRI); 4723 4724 // Wait for hipri to disconnect. 4725 long endTime = SystemClock.elapsedRealtime() + 5000; 4726 4727 while(SystemClock.elapsedRealtime() < endTime) { 4728 NetworkInfo.State state = mCs 4729 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4730 if (state != NetworkInfo.State.DISCONNECTED) { 4731 if (VDBG) { 4732 log("isMobileOk: connected ni=" + 4733 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4734 } 4735 sleep(POLLING_SLEEP_SEC); 4736 continue; 4737 } 4738 } 4739 4740 log("isMobileOk: X result=" + result); 4741 } 4742 return result; 4743 } 4744 4745 @Override 4746 protected Integer doInBackground(Params... params) { 4747 return isMobileOk(params[0]); 4748 } 4749 4750 @Override 4751 protected void onPostExecute(Integer result) { 4752 log("onPostExecute: result=" + result); 4753 if ((mParams != null) && (mParams.mCb != null)) { 4754 mParams.mCb.onComplete(result); 4755 } 4756 } 4757 4758 private String inetAddressesToString(InetAddress[] addresses) { 4759 StringBuffer sb = new StringBuffer(); 4760 boolean firstTime = true; 4761 for(InetAddress addr : addresses) { 4762 if (firstTime) { 4763 firstTime = false; 4764 } else { 4765 sb.append(","); 4766 } 4767 sb.append(addr); 4768 } 4769 return sb.toString(); 4770 } 4771 4772 private void printNetworkInfo() { 4773 boolean hasIccCard = mTm.hasIccCard(); 4774 int simState = mTm.getSimState(); 4775 log("hasIccCard=" + hasIccCard 4776 + " simState=" + simState); 4777 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4778 if (ni != null) { 4779 log("ni.length=" + ni.length); 4780 for (NetworkInfo netInfo: ni) { 4781 log("netInfo=" + netInfo.toString()); 4782 } 4783 } else { 4784 log("no network info ni=null"); 4785 } 4786 } 4787 4788 /** 4789 * Sleep for a few seconds then return. 4790 * @param seconds 4791 */ 4792 private static void sleep(int seconds) { 4793 long stopTime = System.nanoTime() + (seconds * 1000000000); 4794 long sleepTime; 4795 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4796 try { 4797 Thread.sleep(sleepTime / 1000000); 4798 } catch (InterruptedException ignored) { 4799 } 4800 } 4801 } 4802 4803 private static void log(String s) { 4804 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4805 } 4806 } 4807 4808 // TODO: Move to ConnectivityManager and make public? 4809 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4810 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4811 4812 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4813 @Override 4814 public void onReceive(Context context, Intent intent) { 4815 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4816 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4817 } 4818 } 4819 }; 4820 4821 private void handleMobileProvisioningAction(String url) { 4822 // Mark notification as not visible 4823 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4824 4825 // If provisioning network handle as a special case, 4826 // otherwise launch browser with the intent directly. 4827 if (mIsProvisioningNetwork.get()) { 4828 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4829// mIsStartingProvisioning.set(true); 4830// MobileDataStateTracker mdst = (MobileDataStateTracker) 4831// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4832// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4833// mdst.enableMobileProvisioning(url); 4834 } else { 4835 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4836 // Check for apps that can handle provisioning first 4837 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4838 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4839 + mTelephonyManager.getSimOperator()); 4840 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4841 != null) { 4842 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4843 Intent.FLAG_ACTIVITY_NEW_TASK); 4844 mContext.startActivity(provisioningIntent); 4845 } else { 4846 // If no apps exist, use standard URL ACTION_VIEW method 4847 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4848 Intent.CATEGORY_APP_BROWSER); 4849 newIntent.setData(Uri.parse(url)); 4850 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4851 Intent.FLAG_ACTIVITY_NEW_TASK); 4852 try { 4853 mContext.startActivity(newIntent); 4854 } catch (ActivityNotFoundException e) { 4855 loge("handleMobileProvisioningAction: startActivity failed" + e); 4856 } 4857 } 4858 } 4859 } 4860 4861 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4862 private volatile boolean mIsNotificationVisible = false; 4863 4864 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4865 String url) { 4866 if (DBG) { 4867 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4868 + " extraInfo=" + extraInfo + " url=" + url); 4869 } 4870 4871 Resources r = Resources.getSystem(); 4872 NotificationManager notificationManager = (NotificationManager) mContext 4873 .getSystemService(Context.NOTIFICATION_SERVICE); 4874 4875 if (visible) { 4876 CharSequence title; 4877 CharSequence details; 4878 int icon; 4879 Intent intent; 4880 Notification notification = new Notification(); 4881 switch (networkType) { 4882 case ConnectivityManager.TYPE_WIFI: 4883 title = r.getString(R.string.wifi_available_sign_in, 0); 4884 details = r.getString(R.string.network_available_sign_in_detailed, 4885 extraInfo); 4886 icon = R.drawable.stat_notify_wifi_in_range; 4887 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4888 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4889 Intent.FLAG_ACTIVITY_NEW_TASK); 4890 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4891 break; 4892 case ConnectivityManager.TYPE_MOBILE: 4893 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4894 title = r.getString(R.string.network_available_sign_in, 0); 4895 // TODO: Change this to pull from NetworkInfo once a printable 4896 // name has been added to it 4897 details = mTelephonyManager.getNetworkOperatorName(); 4898 icon = R.drawable.stat_notify_rssi_in_range; 4899 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4900 intent.putExtra("EXTRA_URL", url); 4901 intent.setFlags(0); 4902 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4903 break; 4904 default: 4905 title = r.getString(R.string.network_available_sign_in, 0); 4906 details = r.getString(R.string.network_available_sign_in_detailed, 4907 extraInfo); 4908 icon = R.drawable.stat_notify_rssi_in_range; 4909 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4910 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4911 Intent.FLAG_ACTIVITY_NEW_TASK); 4912 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4913 break; 4914 } 4915 4916 notification.when = 0; 4917 notification.icon = icon; 4918 notification.flags = Notification.FLAG_AUTO_CANCEL; 4919 notification.tickerText = title; 4920 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4921 4922 try { 4923 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4924 } catch (NullPointerException npe) { 4925 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4926 npe.printStackTrace(); 4927 } 4928 } else { 4929 try { 4930 notificationManager.cancel(NOTIFICATION_ID, networkType); 4931 } catch (NullPointerException npe) { 4932 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4933 npe.printStackTrace(); 4934 } 4935 } 4936 mIsNotificationVisible = visible; 4937 } 4938 4939 /** Location to an updatable file listing carrier provisioning urls. 4940 * An example: 4941 * 4942 * <?xml version="1.0" encoding="utf-8"?> 4943 * <provisioningUrls> 4944 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4945 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4946 * </provisioningUrls> 4947 */ 4948 private static final String PROVISIONING_URL_PATH = 4949 "/data/misc/radio/provisioning_urls.xml"; 4950 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4951 4952 /** XML tag for root element. */ 4953 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4954 /** XML tag for individual url */ 4955 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4956 /** XML tag for redirected url */ 4957 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4958 /** XML attribute for mcc */ 4959 private static final String ATTR_MCC = "mcc"; 4960 /** XML attribute for mnc */ 4961 private static final String ATTR_MNC = "mnc"; 4962 4963 private static final int REDIRECTED_PROVISIONING = 1; 4964 private static final int PROVISIONING = 2; 4965 4966 private String getProvisioningUrlBaseFromFile(int type) { 4967 FileReader fileReader = null; 4968 XmlPullParser parser = null; 4969 Configuration config = mContext.getResources().getConfiguration(); 4970 String tagType; 4971 4972 switch (type) { 4973 case PROVISIONING: 4974 tagType = TAG_PROVISIONING_URL; 4975 break; 4976 case REDIRECTED_PROVISIONING: 4977 tagType = TAG_REDIRECTED_URL; 4978 break; 4979 default: 4980 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4981 type); 4982 } 4983 4984 try { 4985 fileReader = new FileReader(mProvisioningUrlFile); 4986 parser = Xml.newPullParser(); 4987 parser.setInput(fileReader); 4988 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4989 4990 while (true) { 4991 XmlUtils.nextElement(parser); 4992 4993 String element = parser.getName(); 4994 if (element == null) break; 4995 4996 if (element.equals(tagType)) { 4997 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4998 try { 4999 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 5000 String mnc = parser.getAttributeValue(null, ATTR_MNC); 5001 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 5002 parser.next(); 5003 if (parser.getEventType() == XmlPullParser.TEXT) { 5004 return parser.getText(); 5005 } 5006 } 5007 } 5008 } catch (NumberFormatException e) { 5009 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 5010 } 5011 } 5012 } 5013 return null; 5014 } catch (FileNotFoundException e) { 5015 loge("Carrier Provisioning Urls file not found"); 5016 } catch (XmlPullParserException e) { 5017 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 5018 } catch (IOException e) { 5019 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 5020 } finally { 5021 if (fileReader != null) { 5022 try { 5023 fileReader.close(); 5024 } catch (IOException e) {} 5025 } 5026 } 5027 return null; 5028 } 5029 5030 @Override 5031 public String getMobileRedirectedProvisioningUrl() { 5032 enforceConnectivityInternalPermission(); 5033 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 5034 if (TextUtils.isEmpty(url)) { 5035 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 5036 } 5037 return url; 5038 } 5039 5040 @Override 5041 public String getMobileProvisioningUrl() { 5042 enforceConnectivityInternalPermission(); 5043 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 5044 if (TextUtils.isEmpty(url)) { 5045 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 5046 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 5047 } else { 5048 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 5049 } 5050 // populate the iccid, imei and phone number in the provisioning url. 5051 if (!TextUtils.isEmpty(url)) { 5052 String phoneNumber = mTelephonyManager.getLine1Number(); 5053 if (TextUtils.isEmpty(phoneNumber)) { 5054 phoneNumber = "0000000000"; 5055 } 5056 url = String.format(url, 5057 mTelephonyManager.getSimSerialNumber() /* ICCID */, 5058 mTelephonyManager.getDeviceId() /* IMEI */, 5059 phoneNumber /* Phone numer */); 5060 } 5061 5062 return url; 5063 } 5064 5065 @Override 5066 public void setProvisioningNotificationVisible(boolean visible, int networkType, 5067 String extraInfo, String url) { 5068 enforceConnectivityInternalPermission(); 5069 setProvNotificationVisible(visible, networkType, extraInfo, url); 5070 } 5071 5072 @Override 5073 public void setAirplaneMode(boolean enable) { 5074 enforceConnectivityInternalPermission(); 5075 final long ident = Binder.clearCallingIdentity(); 5076 try { 5077 final ContentResolver cr = mContext.getContentResolver(); 5078 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 5079 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 5080 intent.putExtra("state", enable); 5081 mContext.sendBroadcast(intent); 5082 } finally { 5083 Binder.restoreCallingIdentity(ident); 5084 } 5085 } 5086 5087 private void onUserStart(int userId) { 5088 synchronized(mVpns) { 5089 Vpn userVpn = mVpns.get(userId); 5090 if (userVpn != null) { 5091 loge("Starting user already has a VPN"); 5092 return; 5093 } 5094 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5095 mVpns.put(userId, userVpn); 5096 userVpn.startMonitoring(mContext, mTrackerHandler); 5097 } 5098 } 5099 5100 private void onUserStop(int userId) { 5101 synchronized(mVpns) { 5102 Vpn userVpn = mVpns.get(userId); 5103 if (userVpn == null) { 5104 loge("Stopping user has no VPN"); 5105 return; 5106 } 5107 mVpns.delete(userId); 5108 } 5109 } 5110 5111 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5112 @Override 5113 public void onReceive(Context context, Intent intent) { 5114 final String action = intent.getAction(); 5115 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5116 if (userId == UserHandle.USER_NULL) return; 5117 5118 if (Intent.ACTION_USER_STARTING.equals(action)) { 5119 onUserStart(userId); 5120 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5121 onUserStop(userId); 5122 } 5123 } 5124 }; 5125 5126 @Override 5127 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5128 enforceAccessPermission(); 5129 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5130 return mNetTrackers[networkType].getLinkQualityInfo(); 5131 } else { 5132 return null; 5133 } 5134 } 5135 5136 @Override 5137 public LinkQualityInfo getActiveLinkQualityInfo() { 5138 enforceAccessPermission(); 5139 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5140 mNetTrackers[mActiveDefaultNetwork] != null) { 5141 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5142 } else { 5143 return null; 5144 } 5145 } 5146 5147 @Override 5148 public LinkQualityInfo[] getAllLinkQualityInfo() { 5149 enforceAccessPermission(); 5150 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5151 for (NetworkStateTracker tracker : mNetTrackers) { 5152 if (tracker != null) { 5153 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5154 if (li != null) { 5155 result.add(li); 5156 } 5157 } 5158 } 5159 5160 return result.toArray(new LinkQualityInfo[result.size()]); 5161 } 5162 5163 /* Infrastructure for network sampling */ 5164 5165 private void handleNetworkSamplingTimeout() { 5166 5167 log("Sampling interval elapsed, updating statistics .."); 5168 5169 // initialize list of interfaces .. 5170 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5171 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5172 for (NetworkStateTracker tracker : mNetTrackers) { 5173 if (tracker != null) { 5174 String ifaceName = tracker.getNetworkInterfaceName(); 5175 if (ifaceName != null) { 5176 mapIfaceToSample.put(ifaceName, null); 5177 } 5178 } 5179 } 5180 5181 // Read samples for all interfaces 5182 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5183 5184 // process samples for all networks 5185 for (NetworkStateTracker tracker : mNetTrackers) { 5186 if (tracker != null) { 5187 String ifaceName = tracker.getNetworkInterfaceName(); 5188 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5189 if (ss != null) { 5190 // end the previous sampling cycle 5191 tracker.stopSampling(ss); 5192 // start a new sampling cycle .. 5193 tracker.startSampling(ss); 5194 } 5195 } 5196 } 5197 5198 log("Done."); 5199 5200 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5201 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5202 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5203 5204 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5205 5206 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5207 } 5208 5209 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5210 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5211 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5212 } 5213 5214 private final ArrayList<AsyncChannel> mNetworkFactories = new ArrayList<AsyncChannel>(); 5215 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5216 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5217 5218 5219 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5220 static final boolean REQUEST = true; 5221 static final boolean LISTEN = false; 5222 5223 final NetworkRequest request; 5224 IBinder mBinder; 5225 final int mPid; 5226 final int mUid; 5227 final Messenger messenger; 5228 final boolean isRequest; 5229 5230 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5231 super(); 5232 messenger = m; 5233 request = r; 5234 mBinder = binder; 5235 mPid = getCallingPid(); 5236 mUid = getCallingUid(); 5237 this.isRequest = isRequest; 5238 5239 try { 5240 mBinder.linkToDeath(this, 0); 5241 } catch (RemoteException e) { 5242 binderDied(); 5243 } 5244 } 5245 5246 void unlinkDeathRecipient() { 5247 mBinder.unlinkToDeath(this, 0); 5248 } 5249 5250 public void binderDied() { 5251 log("ConnectivityService NetworkRequestInfo binderDied(" + 5252 request + ", " + mBinder + ")"); 5253 releaseNetworkRequest(request); 5254 } 5255 } 5256 5257 @Override 5258 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5259 Messenger messenger, int timeoutSec, IBinder binder) { 5260 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5261 == false) { 5262 enforceConnectivityInternalPermission(); 5263 } else { 5264 enforceChangePermission(); 5265 } 5266 5267 if (timeoutSec < 0 || timeoutSec > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_SEC) { 5268 throw new IllegalArgumentException("Bad timeout specified"); 5269 } 5270 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5271 networkCapabilities)); 5272 if (DBG) log("requestNetwork for " + networkRequest); 5273 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5274 NetworkRequestInfo.REQUEST); 5275 5276 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5277 if (timeoutSec > 0) { 5278 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5279 nri), timeoutSec * 1000); 5280 } 5281 return networkRequest; 5282 } 5283 5284 @Override 5285 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5286 PendingIntent operation) { 5287 // TODO 5288 return null; 5289 } 5290 5291 @Override 5292 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5293 Messenger messenger, IBinder binder) { 5294 enforceAccessPermission(); 5295 5296 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5297 networkCapabilities)); 5298 if (DBG) log("listenForNetwork for " + networkRequest); 5299 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5300 NetworkRequestInfo.LISTEN); 5301 5302 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5303 return networkRequest; 5304 } 5305 5306 @Override 5307 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5308 PendingIntent operation) { 5309 } 5310 5311 @Override 5312 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5313 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, 5314 networkRequest)); 5315 } 5316 5317 @Override 5318 public void registerNetworkFactory(Messenger messenger) { 5319 enforceConnectivityInternalPermission(); 5320 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, messenger)); 5321 } 5322 5323 private void handleRegisterNetworkFactory(Messenger messenger) { 5324 if (VDBG) log("Got NetworkFactory Messenger"); 5325 AsyncChannel ac = new AsyncChannel(); 5326 mNetworkFactories.add(ac); 5327 ac.connect(mContext, mTrackerHandler, messenger); 5328 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5329 if (nri.isRequest) { 5330 int score = 0; 5331 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5332 if (currentNetwork != null) score = currentNetwork.currentScore; 5333 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, score, 0, nri.request); 5334 } 5335 } 5336 } 5337 5338 /** 5339 * NetworkAgentInfo supporting a request by requestId. 5340 * These have already been vetted (their Capabilities satisfy the request) 5341 * and the are the highest scored network available. 5342 * the are keyed off the Requests requestId. 5343 */ 5344 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5345 new SparseArray<NetworkAgentInfo>(); 5346 5347 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5348 new SparseArray<NetworkAgentInfo>(); 5349 5350 // NetworkAgentInfo keyed off its connecting messenger 5351 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5352 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5353 new HashMap<Messenger, NetworkAgentInfo>(); 5354 5355 private final NetworkRequest mDefaultRequest; 5356 5357 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5358 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5359 int currentScore) { 5360 enforceConnectivityInternalPermission(); 5361 5362 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5363 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5364 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler); 5365 5366 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5367 } 5368 5369 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5370 if (VDBG) log("Got NetworkAgent Messenger"); 5371 mNetworkAgentInfos.put(na.messenger, na); 5372 try { 5373 mNetworkAgentInfoForType[na.networkInfo.getType()].add(na); 5374 } catch (NullPointerException e) { 5375 loge("registered NetworkAgent for unsupported type: " + na); 5376 } 5377 mNetworkForNetId.put(na.network.netId, na); 5378 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5379 NetworkInfo networkInfo = na.networkInfo; 5380 na.networkInfo = null; 5381 updateNetworkInfo(na, networkInfo); 5382 } 5383 5384 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5385 LinkProperties newLp = networkAgent.linkProperties; 5386 int netId = networkAgent.network.netId; 5387 5388 updateInterfaces(newLp, oldLp, netId); 5389 updateMtu(newLp, oldLp); 5390 // TODO - figure out what to do for clat 5391// for (LinkProperties lp : newLp.getStackedLinks()) { 5392// updateMtu(lp, null); 5393// } 5394 updateRoutes(newLp, oldLp, netId); 5395 updateDnses(newLp, oldLp, netId); 5396 updateClat(newLp, oldLp, networkAgent); 5397 } 5398 5399 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5400 // Update 464xlat state. 5401 if (mClat.requiresClat(na)) { 5402 5403 // If the connection was previously using clat, but is not using it now, stop the clat 5404 // daemon. Normally, this happens automatically when the connection disconnects, but if 5405 // the disconnect is not reported, or if the connection's LinkProperties changed for 5406 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5407 // still be running. If it's not running, then stopping it is a no-op. 5408 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5409 mClat.stopClat(); 5410 } 5411 // If the link requires clat to be running, then start the daemon now. 5412 if (newLp != null && na.networkInfo.isConnected()) { 5413 mClat.startClat(na); 5414 } else { 5415 mClat.stopClat(); 5416 } 5417 } 5418 } 5419 5420 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5421 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5422 if (oldLp != null) { 5423 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5424 } else if (newLp != null) { 5425 interfaceDiff.added = newLp.getAllInterfaceNames(); 5426 } 5427 for (String iface : interfaceDiff.added) { 5428 try { 5429 mNetd.addInterfaceToNetwork(iface, netId); 5430 } catch (Exception e) { 5431 loge("Exception adding interface: " + e); 5432 } 5433 } 5434 for (String iface : interfaceDiff.removed) { 5435 try { 5436 mNetd.removeInterfaceFromNetwork(iface, netId); 5437 } catch (Exception e) { 5438 loge("Exception removing interface: " + e); 5439 } 5440 } 5441 } 5442 5443 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5444 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5445 if (oldLp != null) { 5446 routeDiff = oldLp.compareAllRoutes(newLp); 5447 } else if (newLp != null) { 5448 routeDiff.added = newLp.getAllRoutes(); 5449 } 5450 5451 // add routes before removing old in case it helps with continuous connectivity 5452 5453 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5454 for (RouteInfo route : routeDiff.added) { 5455 if (route.hasGateway()) continue; 5456 try { 5457 mNetd.addRoute(netId, route); 5458 } catch (Exception e) { 5459 loge("Exception in addRoute for non-gateway: " + e); 5460 } 5461 } 5462 for (RouteInfo route : routeDiff.added) { 5463 if (route.hasGateway() == false) continue; 5464 try { 5465 mNetd.addRoute(netId, route); 5466 } catch (Exception e) { 5467 loge("Exception in addRoute for gateway: " + e); 5468 } 5469 } 5470 5471 for (RouteInfo route : routeDiff.removed) { 5472 try { 5473 mNetd.removeRoute(netId, route); 5474 } catch (Exception e) { 5475 loge("Exception in removeRoute: " + e); 5476 } 5477 } 5478 } 5479 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5480 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5481 Collection<InetAddress> dnses = newLp.getDnses(); 5482 if (dnses.size() == 0 && mDefaultDns != null) { 5483 dnses = new ArrayList(); 5484 dnses.add(mDefaultDns); 5485 if (DBG) { 5486 loge("no dns provided for netId " + netId + ", so using defaults"); 5487 } 5488 } 5489 try { 5490 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5491 newLp.getDomains()); 5492 } catch (Exception e) { 5493 loge("Exception in setDnsServersForNetwork: " + e); 5494 } 5495 // TODO - setprop "net.dnsX" 5496 } 5497 } 5498 5499 private void updateCapabilities(NetworkAgentInfo networkAgent, 5500 NetworkCapabilities networkCapabilities) { 5501 // TODO - what else here? Verify still satisfies everybody? 5502 // Check if satisfies somebody new? call callbacks? 5503 networkAgent.networkCapabilities = networkCapabilities; 5504 } 5505 5506 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5507 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5508 for (AsyncChannel ac : mNetworkFactories) { 5509 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, score, 0, networkRequest); 5510 } 5511 } 5512 5513 private void callCallbackForRequest(NetworkRequestInfo nri, 5514 NetworkAgentInfo networkAgent, int notificationType) { 5515 if (nri.messenger == null) return; // Default request has no msgr 5516 Object o; 5517 int a1 = 0; 5518 int a2 = 0; 5519 switch (notificationType) { 5520 case ConnectivityManager.CALLBACK_LOSING: 5521 a1 = 30; // TODO - read this from NetworkMonitor 5522 // fall through 5523 case ConnectivityManager.CALLBACK_PRECHECK: 5524 case ConnectivityManager.CALLBACK_AVAILABLE: 5525 case ConnectivityManager.CALLBACK_LOST: 5526 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5527 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5528 o = new NetworkRequest(nri.request); 5529 a2 = networkAgent.network.netId; 5530 break; 5531 } 5532 case ConnectivityManager.CALLBACK_UNAVAIL: 5533 case ConnectivityManager.CALLBACK_RELEASED: { 5534 o = new NetworkRequest(nri.request); 5535 break; 5536 } 5537 default: { 5538 loge("Unknown notificationType " + notificationType); 5539 return; 5540 } 5541 } 5542 Message msg = Message.obtain(); 5543 msg.arg1 = a1; 5544 msg.arg2 = a2; 5545 msg.obj = o; 5546 msg.what = notificationType; 5547 try { 5548 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5549 nri.messenger.send(msg); 5550 } catch (RemoteException e) { 5551 // may occur naturally in the race of binder death. 5552 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5553 } 5554 } 5555 5556 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5557 if (oldNetwork == null) { 5558 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5559 return; 5560 } 5561 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5562 if (DBG) { 5563 if (oldNetwork.networkRequests.size() != 0) { 5564 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5565 } 5566 } 5567 oldNetwork.asyncChannel.disconnect(); 5568 } 5569 5570 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5571 if (newNetwork == null) { 5572 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5573 return; 5574 } 5575 boolean keep = false; 5576 boolean isNewDefault = false; 5577 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5578 // check if any NetworkRequest wants this NetworkAgent 5579 // first check if it satisfies the NetworkCapabilities 5580 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5581 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5582 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5583 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5584 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5585 newNetwork.networkCapabilities)) { 5586 // next check if it's better than any current network we're using for 5587 // this request 5588 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5589 if (VDBG) { 5590 log("currentScore = " + 5591 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5592 ", newScore = " + newNetwork.currentScore); 5593 } 5594 if (currentNetwork == null || 5595 currentNetwork.currentScore < newNetwork.currentScore) { 5596 if (currentNetwork != null) { 5597 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5598 currentNetwork.networkRequests.remove(nri.request.requestId); 5599 currentNetwork.networkLingered.add(nri.request); 5600 affectedNetworks.add(currentNetwork); 5601 } else { 5602 if (VDBG) log(" accepting network in place of null"); 5603 } 5604 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5605 newNetwork.networkRequests.put(nri.request.requestId, nri.request); 5606 keep = true; 5607 // TODO - this could get expensive if we have alot of requests for this 5608 // network. Think about if there is a way to reduce this. Push 5609 // netid->request mapping to each factory? 5610 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5611 if (mDefaultRequest.requestId == nri.request.requestId) { 5612 isNewDefault = true; 5613 updateActiveDefaultNetwork(newNetwork); 5614 } 5615 } 5616 } 5617 } 5618 for (NetworkAgentInfo nai : affectedNetworks) { 5619 boolean teardown = true; 5620 for (int i = 0; i < nai.networkRequests.size(); i++) { 5621 NetworkRequest nr = nai.networkRequests.valueAt(i); 5622 try { 5623 if (mNetworkRequests.get(nr).isRequest) { 5624 teardown = false; 5625 } 5626 } catch (Exception e) { 5627 loge("Request " + nr + " not found in mNetworkRequests."); 5628 loge(" it came from request list of " + nai.name()); 5629 } 5630 } 5631 if (teardown) { 5632 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5633 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5634 } else { 5635 // not going to linger, so kill the list of linger networks.. only 5636 // notify them of linger if it happens as the result of gaining another, 5637 // but if they transition and old network stays up, don't tell them of linger 5638 // or very delayed loss 5639 nai.networkLingered.clear(); 5640 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5641 } 5642 } 5643 if (keep) { 5644 if (isNewDefault) { 5645 if (VDBG) log("Switching to new default network: " + newNetwork); 5646 setupDataActivityTracking(newNetwork); 5647 try { 5648 mNetd.setDefaultNetId(newNetwork.network.netId); 5649 } catch (Exception e) { 5650 loge("Exception setting default network :" + e); 5651 } 5652 if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) { 5653 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5654 } 5655 synchronized (ConnectivityService.this) { 5656 // have a new default network, release the transition wakelock in 5657 // a second if it's held. The second pause is to allow apps 5658 // to reconnect over the new network 5659 if (mNetTransitionWakeLock.isHeld()) { 5660 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5661 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5662 mNetTransitionWakeLockSerialNumber, 0), 5663 1000); 5664 } 5665 } 5666 5667 // this will cause us to come up initially as unconnected and switching 5668 // to connected after our normal pause unless somebody reports us as 5669 // really disconnected 5670 mDefaultInetConditionPublished = 0; 5671 mDefaultConnectionSequence++; 5672 mInetConditionChangeInFlight = false; 5673 // TODO - read the tcp buffer size config string from somewhere 5674 // updateNetworkSettings(); 5675 } 5676 // notify battery stats service about this network 5677// try { 5678 // TODO 5679 //BatteryStatsService.getService().noteNetworkInterfaceType(iface, netType); 5680// } catch (RemoteException e) { } 5681 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 5682 } else { 5683 if (DBG && newNetwork.networkRequests.size() != 0) { 5684 loge("tearing down network with live requests:"); 5685 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 5686 loge(" " + newNetwork.networkRequests.valueAt(i)); 5687 } 5688 } 5689 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 5690 newNetwork.asyncChannel.disconnect(); 5691 } 5692 } 5693 5694 5695 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 5696 NetworkInfo.State state = newInfo.getState(); 5697 NetworkInfo oldInfo = networkAgent.networkInfo; 5698 networkAgent.networkInfo = newInfo; 5699 5700 if (oldInfo != null && oldInfo.getState() == state) { 5701 if (VDBG) log("ignoring duplicate network state non-change"); 5702 return; 5703 } 5704 if (DBG) { 5705 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 5706 (oldInfo == null ? "null" : oldInfo.getState()) + 5707 " to " + state); 5708 } 5709 5710 if (state == NetworkInfo.State.CONNECTED) { 5711 // TODO - check if we want it (optimization) 5712 try { 5713 mNetd.createNetwork(networkAgent.network.netId); 5714 } catch (Exception e) { 5715 loge("Error creating Network " + networkAgent.network.netId); 5716 } 5717 updateLinkProperties(networkAgent, null); 5718 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 5719 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 5720 } else if (state == NetworkInfo.State.DISCONNECTED || 5721 state == NetworkInfo.State.SUSPENDED) { 5722 networkAgent.asyncChannel.disconnect(); 5723 } 5724 } 5725 5726 // notify only this one new request of the current state 5727 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5728 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5729 // TODO - read state from monitor to decide what to send. 5730// if (nai.networkMonitor.isLingering()) { 5731// notifyType = NetworkCallbacks.LOSING; 5732// } else if (nai.networkMonitor.isEvaluating()) { 5733// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5734// } 5735 if (nri.request.needsBroadcasts) { 5736 // TODO 5737// sendNetworkBroadcast(nai, notifyType); 5738 } 5739 callCallbackForRequest(nri, nai, notifyType); 5740 } 5741 5742 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5743 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 5744 boolean needsBroadcasts = false; 5745 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5746 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5747 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5748 if (VDBG) log(" sending notification for " + nr); 5749 if (nr.needsBroadcasts) needsBroadcasts = true; 5750 callCallbackForRequest(nri, networkAgent, notifyType); 5751 } 5752 if (needsBroadcasts) { 5753 if (notifyType == ConnectivityManager.CALLBACK_AVAILABLE) { 5754 sendConnectedBroadcastDelayed(networkAgent.networkInfo, 5755 getConnectivityChangeDelay()); 5756 } else if (notifyType == ConnectivityManager.CALLBACK_LOST) { 5757 NetworkInfo info = new NetworkInfo(networkAgent.networkInfo); 5758 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5759 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5760 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5761 if (info.isFailover()) { 5762 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5763 networkAgent.networkInfo.setFailover(false); 5764 } 5765 if (info.getReason() != null) { 5766 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5767 } 5768 if (info.getExtraInfo() != null) { 5769 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5770 } 5771 NetworkAgentInfo newDefaultAgent = null; 5772 if (networkAgent.networkRequests.get(mDefaultRequest.requestId) != null) { 5773 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 5774 if (newDefaultAgent != null) { 5775 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5776 newDefaultAgent.networkInfo); 5777 } else { 5778 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5779 } 5780 } 5781 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5782 mDefaultInetConditionPublished); 5783 final Intent immediateIntent = new Intent(intent); 5784 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 5785 sendStickyBroadcast(immediateIntent); 5786 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 5787 if (newDefaultAgent != null) { 5788 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 5789 getConnectivityChangeDelay()); 5790 } 5791 } 5792 } 5793 } 5794 5795 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 5796 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5797 if (list == null) return null; 5798 try { 5799 return new LinkProperties(list.get(0).linkProperties); 5800 } catch (IndexOutOfBoundsException e) { 5801 return new LinkProperties(); 5802 } 5803 } 5804 5805 private NetworkInfo getNetworkInfoForType(int networkType) { 5806 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5807 if (list == null) return null; 5808 try { 5809 return new NetworkInfo(list.get(0).networkInfo); 5810 } catch (IndexOutOfBoundsException e) { 5811 return new NetworkInfo(networkType, 0, "Unknown", ""); 5812 } 5813 } 5814 5815 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 5816 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5817 if (list == null) return null; 5818 try { 5819 return new NetworkCapabilities(list.get(0).networkCapabilities); 5820 } catch (IndexOutOfBoundsException e) { 5821 return new NetworkCapabilities(); 5822 } 5823 } 5824} 5825