ConnectivityService.java revision d49f64c6054dc864f651fc57a174cc3991571548
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_ETHERNET; 26import static android.net.ConnectivityManager.TYPE_MOBILE; 27import static android.net.ConnectivityManager.TYPE_WIFI; 28import static android.net.ConnectivityManager.TYPE_WIMAX; 29import static android.net.ConnectivityManager.TYPE_PROXY; 30import static android.net.ConnectivityManager.getNetworkTypeName; 31import static android.net.ConnectivityManager.isNetworkTypeValid; 32import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.app.AlarmManager; 36import android.app.AppOpsManager; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.bluetooth.BluetoothTetheringDataTracker; 41import android.content.ActivityNotFoundException; 42import android.content.BroadcastReceiver; 43import android.content.ContentResolver; 44import android.content.Context; 45import android.content.ContextWrapper; 46import android.content.Intent; 47import android.content.IntentFilter; 48import android.content.pm.ApplicationInfo; 49import android.content.pm.PackageManager; 50import android.content.pm.PackageManager.NameNotFoundException; 51import android.content.res.Configuration; 52import android.content.res.Resources; 53import android.database.ContentObserver; 54import android.net.CaptivePortalTracker; 55import android.net.ConnectivityManager; 56import android.net.DummyDataStateTracker; 57import android.net.EthernetDataTracker; 58import android.net.IConnectivityManager; 59import android.net.INetworkManagementEventObserver; 60import android.net.INetworkPolicyListener; 61import android.net.INetworkPolicyManager; 62import android.net.INetworkStatsService; 63import android.net.LinkAddress; 64import android.net.LinkProperties; 65import android.net.LinkProperties.CompareResult; 66import android.net.LinkQualityInfo; 67import android.net.MobileDataStateTracker; 68import android.net.NetworkConfig; 69import android.net.NetworkInfo; 70import android.net.NetworkInfo.DetailedState; 71import android.net.NetworkQuotaInfo; 72import android.net.NetworkState; 73import android.net.NetworkStateTracker; 74import android.net.NetworkUtils; 75import android.net.Proxy; 76import android.net.ProxyDataTracker; 77import android.net.ProxyProperties; 78import android.net.RouteInfo; 79import android.net.SamplingDataTracker; 80import android.net.Uri; 81import android.net.wifi.WifiStateTracker; 82import android.net.wimax.WimaxManagerConstants; 83import android.os.AsyncTask; 84import android.os.Binder; 85import android.os.Build; 86import android.os.FileUtils; 87import android.os.Handler; 88import android.os.HandlerThread; 89import android.os.IBinder; 90import android.os.INetworkManagementService; 91import android.os.Looper; 92import android.os.Message; 93import android.os.Messenger; 94import android.os.ParcelFileDescriptor; 95import android.os.PowerManager; 96import android.os.Process; 97import android.os.RemoteException; 98import android.os.ServiceManager; 99import android.os.SystemClock; 100import android.os.SystemProperties; 101import android.os.UserHandle; 102import android.provider.Settings; 103import android.security.Credentials; 104import android.security.KeyStore; 105import android.telephony.TelephonyManager; 106import android.text.TextUtils; 107import android.util.Slog; 108import android.util.SparseArray; 109import android.util.SparseIntArray; 110import android.util.Xml; 111 112import com.android.internal.R; 113import com.android.internal.annotations.GuardedBy; 114import com.android.internal.net.LegacyVpnInfo; 115import com.android.internal.net.VpnConfig; 116import com.android.internal.net.VpnProfile; 117import com.android.internal.telephony.DctConstants; 118import com.android.internal.telephony.Phone; 119import com.android.internal.telephony.PhoneConstants; 120import com.android.internal.telephony.TelephonyIntents; 121import com.android.internal.util.IndentingPrintWriter; 122import com.android.internal.util.XmlUtils; 123import com.android.server.am.BatteryStatsService; 124import com.android.server.connectivity.DataConnectionStats; 125import com.android.server.connectivity.Nat464Xlat; 126import com.android.server.connectivity.PacManager; 127import com.android.server.connectivity.Tethering; 128import com.android.server.connectivity.Vpn; 129import com.android.server.net.BaseNetworkObserver; 130import com.android.server.net.LockdownVpnTracker; 131import com.google.android.collect.Lists; 132import com.google.android.collect.Sets; 133 134import dalvik.system.DexClassLoader; 135 136import org.xmlpull.v1.XmlPullParser; 137import org.xmlpull.v1.XmlPullParserException; 138 139import java.io.File; 140import java.io.FileDescriptor; 141import java.io.FileNotFoundException; 142import java.io.FileReader; 143import java.io.IOException; 144import java.io.PrintWriter; 145import java.lang.reflect.Constructor; 146import java.net.HttpURLConnection; 147import java.net.Inet4Address; 148import java.net.Inet6Address; 149import java.net.InetAddress; 150import java.net.URL; 151import java.net.UnknownHostException; 152import java.util.ArrayList; 153import java.util.Arrays; 154import java.util.Collection; 155import java.util.GregorianCalendar; 156import java.util.HashMap; 157import java.util.HashSet; 158import java.util.List; 159import java.util.Map; 160import java.util.Random; 161import java.util.concurrent.atomic.AtomicBoolean; 162import java.util.concurrent.atomic.AtomicInteger; 163 164import javax.net.ssl.HostnameVerifier; 165import javax.net.ssl.HttpsURLConnection; 166import javax.net.ssl.SSLSession; 167 168/** 169 * @hide 170 */ 171public class ConnectivityService extends IConnectivityManager.Stub { 172 private static final String TAG = "ConnectivityService"; 173 174 private static final boolean DBG = true; 175 private static final boolean VDBG = false; 176 177 private static final boolean LOGD_RULES = false; 178 179 // TODO: create better separation between radio types and network types 180 181 // how long to wait before switching back to a radio's default network 182 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 183 // system property that can override the above value 184 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 185 "android.telephony.apn-restore"; 186 187 // Default value if FAIL_FAST_TIME_MS is not set 188 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 189 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 190 private static final String FAIL_FAST_TIME_MS = 191 "persist.radio.fail_fast_time_ms"; 192 193 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 194 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 195 196 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 197 198 private PendingIntent mSampleIntervalElapsedIntent; 199 200 // Set network sampling interval at 12 minutes, this way, even if the timers get 201 // aggregated, it will fire at around 15 minutes, which should allow us to 202 // aggregate this timer with other timers (specially the socket keep alive timers) 203 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 12 * 60); 204 205 // start network sampling a minute after booting ... 206 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 60); 207 208 AlarmManager mAlarmManager; 209 210 // used in recursive route setting to add gateways for the host for which 211 // a host route was requested. 212 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 213 214 private Tethering mTethering; 215 216 private KeyStore mKeyStore; 217 218 @GuardedBy("mVpns") 219 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 220 private VpnCallback mVpnCallback = new VpnCallback(); 221 222 private boolean mLockdownEnabled; 223 private LockdownVpnTracker mLockdownTracker; 224 225 private Nat464Xlat mClat; 226 227 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 228 private Object mRulesLock = new Object(); 229 /** Currently active network rules by UID. */ 230 private SparseIntArray mUidRules = new SparseIntArray(); 231 /** Set of ifaces that are costly. */ 232 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 233 234 /** 235 * Sometimes we want to refer to the individual network state 236 * trackers separately, and sometimes we just want to treat them 237 * abstractly. 238 */ 239 private NetworkStateTracker mNetTrackers[]; 240 241 /* Handles captive portal check on a network */ 242 private CaptivePortalTracker mCaptivePortalTracker; 243 244 /** 245 * The link properties that define the current links 246 */ 247 private LinkProperties mCurrentLinkProperties[]; 248 249 /** 250 * A per Net list of the PID's that requested access to the net 251 * used both as a refcount and for per-PID DNS selection 252 */ 253 private List<Integer> mNetRequestersPids[]; 254 255 // priority order of the nettrackers 256 // (excluding dynamically set mNetworkPreference) 257 // TODO - move mNetworkTypePreference into this 258 private int[] mPriorityList; 259 260 private Context mContext; 261 private int mNetworkPreference; 262 private int mActiveDefaultNetwork = -1; 263 // 0 is full bad, 100 is full good 264 private int mDefaultInetCondition = 0; 265 private int mDefaultInetConditionPublished = 0; 266 private boolean mInetConditionChangeInFlight = false; 267 private int mDefaultConnectionSequence = 0; 268 269 private Object mDnsLock = new Object(); 270 private int mNumDnsEntries; 271 272 private boolean mTestMode; 273 private static ConnectivityService sServiceInstance; 274 275 private INetworkManagementService mNetd; 276 private INetworkPolicyManager mPolicyManager; 277 278 private static final int ENABLED = 1; 279 private static final int DISABLED = 0; 280 281 private static final boolean ADD = true; 282 private static final boolean REMOVE = false; 283 284 private static final boolean TO_DEFAULT_TABLE = true; 285 private static final boolean TO_SECONDARY_TABLE = false; 286 287 private static final boolean EXEMPT = true; 288 private static final boolean UNEXEMPT = false; 289 290 /** 291 * used internally as a delayed event to make us switch back to the 292 * default network 293 */ 294 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 295 296 /** 297 * used internally to change our mobile data enabled flag 298 */ 299 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 300 301 /** 302 * used internally to change our network preference setting 303 * arg1 = networkType to prefer 304 */ 305 private static final int EVENT_SET_NETWORK_PREFERENCE = 3; 306 307 /** 308 * used internally to synchronize inet condition reports 309 * arg1 = networkType 310 * arg2 = condition (0 bad, 100 good) 311 */ 312 private static final int EVENT_INET_CONDITION_CHANGE = 4; 313 314 /** 315 * used internally to mark the end of inet condition hold periods 316 * arg1 = networkType 317 */ 318 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 319 320 /** 321 * used internally to set enable/disable cellular data 322 * arg1 = ENBALED or DISABLED 323 */ 324 private static final int EVENT_SET_MOBILE_DATA = 7; 325 326 /** 327 * used internally to clear a wakelock when transitioning 328 * from one net to another 329 */ 330 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 331 332 /** 333 * used internally to reload global proxy settings 334 */ 335 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 336 337 /** 338 * used internally to set external dependency met/unmet 339 * arg1 = ENABLED (met) or DISABLED (unmet) 340 * arg2 = NetworkType 341 */ 342 private static final int EVENT_SET_DEPENDENCY_MET = 10; 343 344 /** 345 * used internally to send a sticky broadcast delayed. 346 */ 347 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 348 349 /** 350 * Used internally to 351 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 352 */ 353 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 354 355 private static final int EVENT_VPN_STATE_CHANGED = 13; 356 357 /** 358 * Used internally to disable fail fast of mobile data 359 */ 360 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 361 362 /** 363 * user internally to indicate that data sampling interval is up 364 */ 365 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 366 367 /** 368 * PAC manager has received new port. 369 */ 370 private static final int EVENT_PROXY_HAS_CHANGED = 16; 371 372 /** Handler used for internal events. */ 373 private InternalHandler mHandler; 374 /** Handler used for incoming {@link NetworkStateTracker} events. */ 375 private NetworkStateTrackerHandler mTrackerHandler; 376 377 // list of DeathRecipients used to make sure features are turned off when 378 // a process dies 379 private List<FeatureUser> mFeatureUsers; 380 381 private boolean mSystemReady; 382 private Intent mInitialBroadcast; 383 384 private PowerManager.WakeLock mNetTransitionWakeLock; 385 private String mNetTransitionWakeLockCausedBy = ""; 386 private int mNetTransitionWakeLockSerialNumber; 387 private int mNetTransitionWakeLockTimeout; 388 389 private InetAddress mDefaultDns; 390 391 // Lock for protecting access to mAddedRoutes and mExemptAddresses 392 private final Object mRoutesLock = new Object(); 393 394 // this collection is used to refcount the added routes - if there are none left 395 // it's time to remove the route from the route table 396 @GuardedBy("mRoutesLock") 397 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 398 399 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 400 // used to handle cleanup of exempt rules 401 @GuardedBy("mRoutesLock") 402 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 403 404 // used in DBG mode to track inet condition reports 405 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 406 private ArrayList mInetLog; 407 408 // track the current default http proxy - tell the world if we get a new one (real change) 409 private ProxyProperties mDefaultProxy = null; 410 private Object mProxyLock = new Object(); 411 private boolean mDefaultProxyDisabled = false; 412 413 // track the global proxy. 414 private ProxyProperties mGlobalProxy = null; 415 416 private PacManager mPacManager = null; 417 418 private SettingsObserver mSettingsObserver; 419 420 private AppOpsManager mAppOpsManager; 421 422 NetworkConfig[] mNetConfigs; 423 int mNetworksDefined; 424 425 private static class RadioAttributes { 426 public int mSimultaneity; 427 public int mType; 428 public RadioAttributes(String init) { 429 String fragments[] = init.split(","); 430 mType = Integer.parseInt(fragments[0]); 431 mSimultaneity = Integer.parseInt(fragments[1]); 432 } 433 } 434 RadioAttributes[] mRadioAttributes; 435 436 // the set of network types that can only be enabled by system/sig apps 437 List mProtectedNetworks; 438 439 private DataConnectionStats mDataConnectionStats; 440 441 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 442 443 TelephonyManager mTelephonyManager; 444 445 public ConnectivityService(Context context, INetworkManagementService netd, 446 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 447 // Currently, omitting a NetworkFactory will create one internally 448 // TODO: create here when we have cleaner WiMAX support 449 this(context, netd, statsService, policyManager, null); 450 } 451 452 public ConnectivityService(Context context, INetworkManagementService netManager, 453 INetworkStatsService statsService, INetworkPolicyManager policyManager, 454 NetworkFactory netFactory) { 455 if (DBG) log("ConnectivityService starting up"); 456 457 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 458 handlerThread.start(); 459 mHandler = new InternalHandler(handlerThread.getLooper()); 460 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 461 462 if (netFactory == null) { 463 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 464 } 465 466 // setup our unique device name 467 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 468 String id = Settings.Secure.getString(context.getContentResolver(), 469 Settings.Secure.ANDROID_ID); 470 if (id != null && id.length() > 0) { 471 String name = new String("android-").concat(id); 472 SystemProperties.set("net.hostname", name); 473 } 474 } 475 476 // read our default dns server ip 477 String dns = Settings.Global.getString(context.getContentResolver(), 478 Settings.Global.DEFAULT_DNS_SERVER); 479 if (dns == null || dns.length() == 0) { 480 dns = context.getResources().getString( 481 com.android.internal.R.string.config_default_dns_server); 482 } 483 try { 484 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 485 } catch (IllegalArgumentException e) { 486 loge("Error setting defaultDns using " + dns); 487 } 488 489 mContext = checkNotNull(context, "missing Context"); 490 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 491 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 492 mKeyStore = KeyStore.getInstance(); 493 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 494 495 try { 496 mPolicyManager.registerListener(mPolicyListener); 497 } catch (RemoteException e) { 498 // ouch, no rules updates means some processes may never get network 499 loge("unable to register INetworkPolicyListener" + e.toString()); 500 } 501 502 final PowerManager powerManager = (PowerManager) context.getSystemService( 503 Context.POWER_SERVICE); 504 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 505 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 506 com.android.internal.R.integer.config_networkTransitionTimeout); 507 508 mNetTrackers = new NetworkStateTracker[ 509 ConnectivityManager.MAX_NETWORK_TYPE+1]; 510 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 511 512 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 513 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 514 515 // Load device network attributes from resources 516 String[] raStrings = context.getResources().getStringArray( 517 com.android.internal.R.array.radioAttributes); 518 for (String raString : raStrings) { 519 RadioAttributes r = new RadioAttributes(raString); 520 if (VDBG) log("raString=" + raString + " r=" + r); 521 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 522 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 523 continue; 524 } 525 if (mRadioAttributes[r.mType] != null) { 526 loge("Error in radioAttributes - ignoring attempt to redefine type " + 527 r.mType); 528 continue; 529 } 530 mRadioAttributes[r.mType] = r; 531 } 532 533 // TODO: What is the "correct" way to do determine if this is a wifi only device? 534 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 535 log("wifiOnly=" + wifiOnly); 536 String[] naStrings = context.getResources().getStringArray( 537 com.android.internal.R.array.networkAttributes); 538 for (String naString : naStrings) { 539 try { 540 NetworkConfig n = new NetworkConfig(naString); 541 if (VDBG) log("naString=" + naString + " config=" + n); 542 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 543 loge("Error in networkAttributes - ignoring attempt to define type " + 544 n.type); 545 continue; 546 } 547 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 548 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 549 n.type); 550 continue; 551 } 552 if (mNetConfigs[n.type] != null) { 553 loge("Error in networkAttributes - ignoring attempt to redefine type " + 554 n.type); 555 continue; 556 } 557 if (mRadioAttributes[n.radio] == null) { 558 loge("Error in networkAttributes - ignoring attempt to use undefined " + 559 "radio " + n.radio + " in network type " + n.type); 560 continue; 561 } 562 mNetConfigs[n.type] = n; 563 mNetworksDefined++; 564 } catch(Exception e) { 565 // ignore it - leave the entry null 566 } 567 } 568 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 569 570 mProtectedNetworks = new ArrayList<Integer>(); 571 int[] protectedNetworks = context.getResources().getIntArray( 572 com.android.internal.R.array.config_protectedNetworks); 573 for (int p : protectedNetworks) { 574 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 575 mProtectedNetworks.add(p); 576 } else { 577 if (DBG) loge("Ignoring protectedNetwork " + p); 578 } 579 } 580 581 // high priority first 582 mPriorityList = new int[mNetworksDefined]; 583 { 584 int insertionPoint = mNetworksDefined-1; 585 int currentLowest = 0; 586 int nextLowest = 0; 587 while (insertionPoint > -1) { 588 for (NetworkConfig na : mNetConfigs) { 589 if (na == null) continue; 590 if (na.priority < currentLowest) continue; 591 if (na.priority > currentLowest) { 592 if (na.priority < nextLowest || nextLowest == 0) { 593 nextLowest = na.priority; 594 } 595 continue; 596 } 597 mPriorityList[insertionPoint--] = na.type; 598 } 599 currentLowest = nextLowest; 600 nextLowest = 0; 601 } 602 } 603 604 // Update mNetworkPreference according to user mannually first then overlay config.xml 605 mNetworkPreference = getPersistedNetworkPreference(); 606 if (mNetworkPreference == -1) { 607 for (int n : mPriorityList) { 608 if (mNetConfigs[n].isDefault() && ConnectivityManager.isNetworkTypeValid(n)) { 609 mNetworkPreference = n; 610 break; 611 } 612 } 613 if (mNetworkPreference == -1) { 614 throw new IllegalStateException( 615 "You should set at least one default Network in config.xml!"); 616 } 617 } 618 619 mNetRequestersPids = 620 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 621 for (int i : mPriorityList) { 622 mNetRequestersPids[i] = new ArrayList<Integer>(); 623 } 624 625 mFeatureUsers = new ArrayList<FeatureUser>(); 626 627 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 628 && SystemProperties.get("ro.build.type").equals("eng"); 629 630 // Create and start trackers for hard-coded networks 631 for (int targetNetworkType : mPriorityList) { 632 final NetworkConfig config = mNetConfigs[targetNetworkType]; 633 final NetworkStateTracker tracker; 634 try { 635 tracker = netFactory.createTracker(targetNetworkType, config); 636 mNetTrackers[targetNetworkType] = tracker; 637 } catch (IllegalArgumentException e) { 638 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 639 + " tracker: " + e); 640 continue; 641 } 642 643 tracker.startMonitoring(context, mTrackerHandler); 644 if (config.isDefault()) { 645 tracker.reconnect(); 646 } 647 } 648 649 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 650 651 //set up the listener for user state for creating user VPNs 652 IntentFilter intentFilter = new IntentFilter(); 653 intentFilter.addAction(Intent.ACTION_USER_STARTING); 654 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 655 mContext.registerReceiverAsUser( 656 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 657 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 658 659 try { 660 mNetd.registerObserver(mTethering); 661 mNetd.registerObserver(mDataActivityObserver); 662 mNetd.registerObserver(mClat); 663 } catch (RemoteException e) { 664 loge("Error registering observer :" + e); 665 } 666 667 if (DBG) { 668 mInetLog = new ArrayList(); 669 } 670 671 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 672 mSettingsObserver.observe(mContext); 673 674 mDataConnectionStats = new DataConnectionStats(mContext); 675 mDataConnectionStats.startMonitoring(); 676 677 // start network sampling .. 678 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 679 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 680 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 681 682 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 683 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 684 685 IntentFilter filter = new IntentFilter(); 686 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 687 mContext.registerReceiver( 688 new BroadcastReceiver() { 689 @Override 690 public void onReceive(Context context, Intent intent) { 691 String action = intent.getAction(); 692 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 693 mHandler.sendMessage(mHandler.obtainMessage 694 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 695 } 696 } 697 }, 698 new IntentFilter(filter)); 699 700 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 701 702 filter = new IntentFilter(); 703 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 704 mContext.registerReceiver(mProvisioningReceiver, filter); 705 706 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 707 } 708 709 /** 710 * Factory that creates {@link NetworkStateTracker} instances using given 711 * {@link NetworkConfig}. 712 */ 713 public interface NetworkFactory { 714 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 715 } 716 717 private static class DefaultNetworkFactory implements NetworkFactory { 718 private final Context mContext; 719 private final Handler mTrackerHandler; 720 721 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 722 mContext = context; 723 mTrackerHandler = trackerHandler; 724 } 725 726 @Override 727 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 728 switch (config.radio) { 729 case TYPE_WIFI: 730 return new WifiStateTracker(targetNetworkType, config.name); 731 case TYPE_MOBILE: 732 return new MobileDataStateTracker(targetNetworkType, config.name); 733 case TYPE_DUMMY: 734 return new DummyDataStateTracker(targetNetworkType, config.name); 735 case TYPE_BLUETOOTH: 736 return BluetoothTetheringDataTracker.getInstance(); 737 case TYPE_WIMAX: 738 return makeWimaxStateTracker(mContext, mTrackerHandler); 739 case TYPE_ETHERNET: 740 return EthernetDataTracker.getInstance(); 741 case TYPE_PROXY: 742 return new ProxyDataTracker(); 743 default: 744 throw new IllegalArgumentException( 745 "Trying to create a NetworkStateTracker for an unknown radio type: " 746 + config.radio); 747 } 748 } 749 } 750 751 /** 752 * Loads external WiMAX library and registers as system service, returning a 753 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 754 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 755 */ 756 private static NetworkStateTracker makeWimaxStateTracker( 757 Context context, Handler trackerHandler) { 758 // Initialize Wimax 759 DexClassLoader wimaxClassLoader; 760 Class wimaxStateTrackerClass = null; 761 Class wimaxServiceClass = null; 762 Class wimaxManagerClass; 763 String wimaxJarLocation; 764 String wimaxLibLocation; 765 String wimaxManagerClassName; 766 String wimaxServiceClassName; 767 String wimaxStateTrackerClassName; 768 769 NetworkStateTracker wimaxStateTracker = null; 770 771 boolean isWimaxEnabled = context.getResources().getBoolean( 772 com.android.internal.R.bool.config_wimaxEnabled); 773 774 if (isWimaxEnabled) { 775 try { 776 wimaxJarLocation = context.getResources().getString( 777 com.android.internal.R.string.config_wimaxServiceJarLocation); 778 wimaxLibLocation = context.getResources().getString( 779 com.android.internal.R.string.config_wimaxNativeLibLocation); 780 wimaxManagerClassName = context.getResources().getString( 781 com.android.internal.R.string.config_wimaxManagerClassname); 782 wimaxServiceClassName = context.getResources().getString( 783 com.android.internal.R.string.config_wimaxServiceClassname); 784 wimaxStateTrackerClassName = context.getResources().getString( 785 com.android.internal.R.string.config_wimaxStateTrackerClassname); 786 787 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 788 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 789 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 790 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 791 792 try { 793 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 794 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 795 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 796 } catch (ClassNotFoundException ex) { 797 loge("Exception finding Wimax classes: " + ex.toString()); 798 return null; 799 } 800 } catch(Resources.NotFoundException ex) { 801 loge("Wimax Resources does not exist!!! "); 802 return null; 803 } 804 805 try { 806 if (DBG) log("Starting Wimax Service... "); 807 808 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 809 (new Class[] {Context.class, Handler.class}); 810 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 811 context, trackerHandler); 812 813 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 814 (new Class[] {Context.class, wimaxStateTrackerClass}); 815 wmxSrvConst.setAccessible(true); 816 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 817 wmxSrvConst.setAccessible(false); 818 819 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 820 821 } catch(Exception ex) { 822 loge("Exception creating Wimax classes: " + ex.toString()); 823 return null; 824 } 825 } else { 826 loge("Wimax is not enabled or not added to the network attributes!!! "); 827 return null; 828 } 829 830 return wimaxStateTracker; 831 } 832 833 /** 834 * Sets the preferred network. 835 * @param preference the new preference 836 */ 837 public void setNetworkPreference(int preference) { 838 enforceChangePermission(); 839 840 mHandler.sendMessage( 841 mHandler.obtainMessage(EVENT_SET_NETWORK_PREFERENCE, preference, 0)); 842 } 843 844 public int getNetworkPreference() { 845 enforceAccessPermission(); 846 int preference; 847 synchronized(this) { 848 preference = mNetworkPreference; 849 } 850 return preference; 851 } 852 853 private void handleSetNetworkPreference(int preference) { 854 if (ConnectivityManager.isNetworkTypeValid(preference) && 855 mNetConfigs[preference] != null && 856 mNetConfigs[preference].isDefault()) { 857 if (mNetworkPreference != preference) { 858 final ContentResolver cr = mContext.getContentResolver(); 859 Settings.Global.putInt(cr, Settings.Global.NETWORK_PREFERENCE, preference); 860 synchronized(this) { 861 mNetworkPreference = preference; 862 } 863 enforcePreference(); 864 } 865 } 866 } 867 868 private int getConnectivityChangeDelay() { 869 final ContentResolver cr = mContext.getContentResolver(); 870 871 /** Check system properties for the default value then use secure settings value, if any. */ 872 int defaultDelay = SystemProperties.getInt( 873 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 874 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 875 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 876 defaultDelay); 877 } 878 879 private int getPersistedNetworkPreference() { 880 final ContentResolver cr = mContext.getContentResolver(); 881 882 final int networkPrefSetting = Settings.Global 883 .getInt(cr, Settings.Global.NETWORK_PREFERENCE, -1); 884 885 return networkPrefSetting; 886 } 887 888 /** 889 * Make the state of network connectivity conform to the preference settings 890 * In this method, we only tear down a non-preferred network. Establishing 891 * a connection to the preferred network is taken care of when we handle 892 * the disconnect event from the non-preferred network 893 * (see {@link #handleDisconnect(NetworkInfo)}). 894 */ 895 private void enforcePreference() { 896 if (mNetTrackers[mNetworkPreference].getNetworkInfo().isConnected()) 897 return; 898 899 if (!mNetTrackers[mNetworkPreference].isAvailable()) 900 return; 901 902 for (int t=0; t <= ConnectivityManager.MAX_RADIO_TYPE; t++) { 903 if (t != mNetworkPreference && mNetTrackers[t] != null && 904 mNetTrackers[t].getNetworkInfo().isConnected()) { 905 if (DBG) { 906 log("tearing down " + mNetTrackers[t].getNetworkInfo() + 907 " in enforcePreference"); 908 } 909 teardown(mNetTrackers[t]); 910 } 911 } 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(NetworkStateTracker tracker, int uid) { 928 final String iface = tracker.getLinkProperties().getInterfaceName(); 929 930 final boolean networkCostly; 931 final int uidRules; 932 synchronized (mRulesLock) { 933 networkCostly = mMeteredIfaces.contains(iface); 934 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 935 } 936 937 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 938 return true; 939 } 940 941 // no restrictive rules; network is visible 942 return false; 943 } 944 945 /** 946 * Return a filtered {@link NetworkInfo}, potentially marked 947 * {@link DetailedState#BLOCKED} based on 948 * {@link #isNetworkBlocked(NetworkStateTracker, int)}. 949 */ 950 private NetworkInfo getFilteredNetworkInfo(NetworkStateTracker tracker, int uid) { 951 NetworkInfo info = tracker.getNetworkInfo(); 952 if (isNetworkBlocked(tracker, uid)) { 953 // network is blocked; clone and override state 954 info = new NetworkInfo(info); 955 info.setDetailedState(DetailedState.BLOCKED, null, null); 956 } 957 if (mLockdownTracker != null) { 958 info = mLockdownTracker.augmentNetworkInfo(info); 959 } 960 return info; 961 } 962 963 /** 964 * Return NetworkInfo for the active (i.e., connected) network interface. 965 * It is assumed that at most one network is active at a time. If more 966 * than one is active, it is indeterminate which will be returned. 967 * @return the info for the active network, or {@code null} if none is 968 * active 969 */ 970 @Override 971 public NetworkInfo getActiveNetworkInfo() { 972 enforceAccessPermission(); 973 final int uid = Binder.getCallingUid(); 974 return getNetworkInfo(mActiveDefaultNetwork, uid); 975 } 976 977 /** 978 * Find the first Provisioning network. 979 * 980 * @return NetworkInfo or null if none. 981 */ 982 private NetworkInfo getProvisioningNetworkInfo() { 983 enforceAccessPermission(); 984 985 // Find the first Provisioning Network 986 NetworkInfo provNi = null; 987 for (NetworkInfo ni : getAllNetworkInfo()) { 988 if (ni.isConnectedToProvisioningNetwork()) { 989 provNi = ni; 990 break; 991 } 992 } 993 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 994 return provNi; 995 } 996 997 /** 998 * Find the first Provisioning network or the ActiveDefaultNetwork 999 * if there is no Provisioning network 1000 * 1001 * @return NetworkInfo or null if none. 1002 */ 1003 @Override 1004 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1005 enforceAccessPermission(); 1006 1007 NetworkInfo provNi = getProvisioningNetworkInfo(); 1008 if (provNi == null) { 1009 final int uid = Binder.getCallingUid(); 1010 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1011 } 1012 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1013 return provNi; 1014 } 1015 1016 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1017 enforceAccessPermission(); 1018 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1019 final NetworkStateTracker tracker = mNetTrackers[mActiveDefaultNetwork]; 1020 if (tracker != null) { 1021 return tracker.getNetworkInfo(); 1022 } 1023 } 1024 return null; 1025 } 1026 1027 @Override 1028 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1029 enforceConnectivityInternalPermission(); 1030 return getNetworkInfo(mActiveDefaultNetwork, uid); 1031 } 1032 1033 @Override 1034 public NetworkInfo getNetworkInfo(int networkType) { 1035 enforceAccessPermission(); 1036 final int uid = Binder.getCallingUid(); 1037 return getNetworkInfo(networkType, uid); 1038 } 1039 1040 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1041 NetworkInfo info = null; 1042 if (isNetworkTypeValid(networkType)) { 1043 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1044 if (tracker != null) { 1045 info = getFilteredNetworkInfo(tracker, uid); 1046 } 1047 } 1048 return info; 1049 } 1050 1051 @Override 1052 public NetworkInfo[] getAllNetworkInfo() { 1053 enforceAccessPermission(); 1054 final int uid = Binder.getCallingUid(); 1055 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1056 synchronized (mRulesLock) { 1057 for (NetworkStateTracker tracker : mNetTrackers) { 1058 if (tracker != null) { 1059 result.add(getFilteredNetworkInfo(tracker, uid)); 1060 } 1061 } 1062 } 1063 return result.toArray(new NetworkInfo[result.size()]); 1064 } 1065 1066 @Override 1067 public boolean isNetworkSupported(int networkType) { 1068 enforceAccessPermission(); 1069 return (isNetworkTypeValid(networkType) && (mNetTrackers[networkType] != null)); 1070 } 1071 1072 /** 1073 * Return LinkProperties for the active (i.e., connected) default 1074 * network interface. It is assumed that at most one default network 1075 * is active at a time. If more than one is active, it is indeterminate 1076 * which will be returned. 1077 * @return the ip properties for the active network, or {@code null} if 1078 * none is active 1079 */ 1080 @Override 1081 public LinkProperties getActiveLinkProperties() { 1082 return getLinkProperties(mActiveDefaultNetwork); 1083 } 1084 1085 @Override 1086 public LinkProperties getLinkProperties(int networkType) { 1087 enforceAccessPermission(); 1088 if (isNetworkTypeValid(networkType)) { 1089 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1090 if (tracker != null) { 1091 return tracker.getLinkProperties(); 1092 } 1093 } 1094 return null; 1095 } 1096 1097 @Override 1098 public NetworkState[] getAllNetworkState() { 1099 enforceAccessPermission(); 1100 final int uid = Binder.getCallingUid(); 1101 final ArrayList<NetworkState> result = Lists.newArrayList(); 1102 synchronized (mRulesLock) { 1103 for (NetworkStateTracker tracker : mNetTrackers) { 1104 if (tracker != null) { 1105 final NetworkInfo info = getFilteredNetworkInfo(tracker, uid); 1106 result.add(new NetworkState( 1107 info, tracker.getLinkProperties(), tracker.getLinkCapabilities())); 1108 } 1109 } 1110 } 1111 return result.toArray(new NetworkState[result.size()]); 1112 } 1113 1114 private NetworkState getNetworkStateUnchecked(int networkType) { 1115 if (isNetworkTypeValid(networkType)) { 1116 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1117 if (tracker != null) { 1118 return new NetworkState(tracker.getNetworkInfo(), tracker.getLinkProperties(), 1119 tracker.getLinkCapabilities()); 1120 } 1121 } 1122 return null; 1123 } 1124 1125 @Override 1126 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1127 enforceAccessPermission(); 1128 1129 final long token = Binder.clearCallingIdentity(); 1130 try { 1131 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1132 if (state != null) { 1133 try { 1134 return mPolicyManager.getNetworkQuotaInfo(state); 1135 } catch (RemoteException e) { 1136 } 1137 } 1138 return null; 1139 } finally { 1140 Binder.restoreCallingIdentity(token); 1141 } 1142 } 1143 1144 @Override 1145 public boolean isActiveNetworkMetered() { 1146 enforceAccessPermission(); 1147 final long token = Binder.clearCallingIdentity(); 1148 try { 1149 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1150 } finally { 1151 Binder.restoreCallingIdentity(token); 1152 } 1153 } 1154 1155 private boolean isNetworkMeteredUnchecked(int networkType) { 1156 final NetworkState state = getNetworkStateUnchecked(networkType); 1157 if (state != null) { 1158 try { 1159 return mPolicyManager.isNetworkMetered(state); 1160 } catch (RemoteException e) { 1161 } 1162 } 1163 return false; 1164 } 1165 1166 public boolean setRadios(boolean turnOn) { 1167 boolean result = true; 1168 enforceChangePermission(); 1169 for (NetworkStateTracker t : mNetTrackers) { 1170 if (t != null) result = t.setRadio(turnOn) && result; 1171 } 1172 return result; 1173 } 1174 1175 public boolean setRadio(int netType, boolean turnOn) { 1176 enforceChangePermission(); 1177 if (!ConnectivityManager.isNetworkTypeValid(netType)) { 1178 return false; 1179 } 1180 NetworkStateTracker tracker = mNetTrackers[netType]; 1181 return tracker != null && tracker.setRadio(turnOn); 1182 } 1183 1184 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1185 @Override 1186 public void interfaceClassDataActivityChanged(String label, boolean active) { 1187 int deviceType = Integer.parseInt(label); 1188 sendDataActivityBroadcast(deviceType, active); 1189 } 1190 }; 1191 1192 /** 1193 * Used to notice when the calling process dies so we can self-expire 1194 * 1195 * Also used to know if the process has cleaned up after itself when 1196 * our auto-expire timer goes off. The timer has a link to an object. 1197 * 1198 */ 1199 private class FeatureUser implements IBinder.DeathRecipient { 1200 int mNetworkType; 1201 String mFeature; 1202 IBinder mBinder; 1203 int mPid; 1204 int mUid; 1205 long mCreateTime; 1206 1207 FeatureUser(int type, String feature, IBinder binder) { 1208 super(); 1209 mNetworkType = type; 1210 mFeature = feature; 1211 mBinder = binder; 1212 mPid = getCallingPid(); 1213 mUid = getCallingUid(); 1214 mCreateTime = System.currentTimeMillis(); 1215 1216 try { 1217 mBinder.linkToDeath(this, 0); 1218 } catch (RemoteException e) { 1219 binderDied(); 1220 } 1221 } 1222 1223 void unlinkDeathRecipient() { 1224 mBinder.unlinkToDeath(this, 0); 1225 } 1226 1227 public void binderDied() { 1228 log("ConnectivityService FeatureUser binderDied(" + 1229 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1230 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1231 stopUsingNetworkFeature(this, false); 1232 } 1233 1234 public void expire() { 1235 if (VDBG) { 1236 log("ConnectivityService FeatureUser expire(" + 1237 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1238 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1239 } 1240 stopUsingNetworkFeature(this, false); 1241 } 1242 1243 public boolean isSameUser(FeatureUser u) { 1244 if (u == null) return false; 1245 1246 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1247 } 1248 1249 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1250 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1251 TextUtils.equals(mFeature, feature)) { 1252 return true; 1253 } 1254 return false; 1255 } 1256 1257 public String toString() { 1258 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1259 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1260 } 1261 } 1262 1263 // javadoc from interface 1264 public int startUsingNetworkFeature(int networkType, String feature, 1265 IBinder binder) { 1266 long startTime = 0; 1267 if (DBG) { 1268 startTime = SystemClock.elapsedRealtime(); 1269 } 1270 if (VDBG) { 1271 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1272 + Binder.getCallingUid()); 1273 } 1274 enforceChangePermission(); 1275 try { 1276 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1277 mNetConfigs[networkType] == null) { 1278 return PhoneConstants.APN_REQUEST_FAILED; 1279 } 1280 1281 FeatureUser f = new FeatureUser(networkType, feature, binder); 1282 1283 // TODO - move this into individual networktrackers 1284 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1285 1286 if (mLockdownEnabled) { 1287 // Since carrier APNs usually aren't available from VPN 1288 // endpoint, mark them as unavailable. 1289 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1290 } 1291 1292 if (mProtectedNetworks.contains(usedNetworkType)) { 1293 enforceConnectivityInternalPermission(); 1294 } 1295 1296 // if UID is restricted, don't allow them to bring up metered APNs 1297 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1298 final int uidRules; 1299 synchronized (mRulesLock) { 1300 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1301 } 1302 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1303 return PhoneConstants.APN_REQUEST_FAILED; 1304 } 1305 1306 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1307 if (network != null) { 1308 Integer currentPid = new Integer(getCallingPid()); 1309 if (usedNetworkType != networkType) { 1310 NetworkInfo ni = network.getNetworkInfo(); 1311 1312 if (ni.isAvailable() == false) { 1313 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1314 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1315 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1316 } else { 1317 // else make the attempt anyway - probably giving REQUEST_STARTED below 1318 if (DBG) { 1319 log("special network not available, but try anyway ni=" + 1320 ni.getTypeName()); 1321 } 1322 } 1323 } 1324 1325 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1326 1327 synchronized(this) { 1328 boolean addToList = true; 1329 if (restoreTimer < 0) { 1330 // In case there is no timer is specified for the feature, 1331 // make sure we don't add duplicate entry with the same request. 1332 for (FeatureUser u : mFeatureUsers) { 1333 if (u.isSameUser(f)) { 1334 // Duplicate user is found. Do not add. 1335 addToList = false; 1336 break; 1337 } 1338 } 1339 } 1340 1341 if (addToList) mFeatureUsers.add(f); 1342 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1343 // this gets used for per-pid dns when connected 1344 mNetRequestersPids[usedNetworkType].add(currentPid); 1345 } 1346 } 1347 1348 if (restoreTimer >= 0) { 1349 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1350 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1351 } 1352 1353 if ((ni.isConnectedOrConnecting() == true) && 1354 !network.isTeardownRequested()) { 1355 if (ni.isConnected() == true) { 1356 final long token = Binder.clearCallingIdentity(); 1357 try { 1358 // add the pid-specific dns 1359 handleDnsConfigurationChange(usedNetworkType); 1360 if (VDBG) log("special network already active"); 1361 } finally { 1362 Binder.restoreCallingIdentity(token); 1363 } 1364 return PhoneConstants.APN_ALREADY_ACTIVE; 1365 } 1366 if (VDBG) log("special network already connecting"); 1367 return PhoneConstants.APN_REQUEST_STARTED; 1368 } 1369 1370 // check if the radio in play can make another contact 1371 // assume if cannot for now 1372 1373 if (DBG) { 1374 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1375 feature); 1376 } 1377 if (network.reconnect()) { 1378 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1379 return PhoneConstants.APN_REQUEST_STARTED; 1380 } else { 1381 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1382 return PhoneConstants.APN_REQUEST_FAILED; 1383 } 1384 } else { 1385 // need to remember this unsupported request so we respond appropriately on stop 1386 synchronized(this) { 1387 mFeatureUsers.add(f); 1388 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1389 // this gets used for per-pid dns when connected 1390 mNetRequestersPids[usedNetworkType].add(currentPid); 1391 } 1392 } 1393 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1394 return -1; 1395 } 1396 } 1397 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1398 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1399 } finally { 1400 if (DBG) { 1401 final long execTime = SystemClock.elapsedRealtime() - startTime; 1402 if (execTime > 250) { 1403 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1404 } else { 1405 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1406 } 1407 } 1408 } 1409 } 1410 1411 // javadoc from interface 1412 public int stopUsingNetworkFeature(int networkType, String feature) { 1413 enforceChangePermission(); 1414 1415 int pid = getCallingPid(); 1416 int uid = getCallingUid(); 1417 1418 FeatureUser u = null; 1419 boolean found = false; 1420 1421 synchronized(this) { 1422 for (FeatureUser x : mFeatureUsers) { 1423 if (x.isSameUser(pid, uid, networkType, feature)) { 1424 u = x; 1425 found = true; 1426 break; 1427 } 1428 } 1429 } 1430 if (found && u != null) { 1431 if (VDBG) log("stopUsingNetworkFeature: X"); 1432 // stop regardless of how many other time this proc had called start 1433 return stopUsingNetworkFeature(u, true); 1434 } else { 1435 // none found! 1436 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1437 return 1; 1438 } 1439 } 1440 1441 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1442 int networkType = u.mNetworkType; 1443 String feature = u.mFeature; 1444 int pid = u.mPid; 1445 int uid = u.mUid; 1446 1447 NetworkStateTracker tracker = null; 1448 boolean callTeardown = false; // used to carry our decision outside of sync block 1449 1450 if (VDBG) { 1451 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1452 } 1453 1454 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1455 if (DBG) { 1456 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1457 ", net is invalid"); 1458 } 1459 return -1; 1460 } 1461 1462 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1463 // sync block 1464 synchronized(this) { 1465 // check if this process still has an outstanding start request 1466 if (!mFeatureUsers.contains(u)) { 1467 if (VDBG) { 1468 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1469 ", ignoring"); 1470 } 1471 return 1; 1472 } 1473 u.unlinkDeathRecipient(); 1474 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1475 // If we care about duplicate requests, check for that here. 1476 // 1477 // This is done to support the extension of a request - the app 1478 // can request we start the network feature again and renew the 1479 // auto-shutoff delay. Normal "stop" calls from the app though 1480 // do not pay attention to duplicate requests - in effect the 1481 // API does not refcount and a single stop will counter multiple starts. 1482 if (ignoreDups == false) { 1483 for (FeatureUser x : mFeatureUsers) { 1484 if (x.isSameUser(u)) { 1485 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1486 return 1; 1487 } 1488 } 1489 } 1490 1491 // TODO - move to individual network trackers 1492 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1493 1494 tracker = mNetTrackers[usedNetworkType]; 1495 if (tracker == null) { 1496 if (DBG) { 1497 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1498 " no known tracker for used net type " + usedNetworkType); 1499 } 1500 return -1; 1501 } 1502 if (usedNetworkType != networkType) { 1503 Integer currentPid = new Integer(pid); 1504 mNetRequestersPids[usedNetworkType].remove(currentPid); 1505 1506 final long token = Binder.clearCallingIdentity(); 1507 try { 1508 reassessPidDns(pid, true); 1509 } finally { 1510 Binder.restoreCallingIdentity(token); 1511 } 1512 flushVmDnsCache(); 1513 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1514 if (VDBG) { 1515 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1516 " others still using it"); 1517 } 1518 return 1; 1519 } 1520 callTeardown = true; 1521 } else { 1522 if (DBG) { 1523 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1524 " not a known feature - dropping"); 1525 } 1526 } 1527 } 1528 1529 if (callTeardown) { 1530 if (DBG) { 1531 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1532 } 1533 tracker.teardown(); 1534 return 1; 1535 } else { 1536 return -1; 1537 } 1538 } 1539 1540 /** 1541 * Check if the address falls into any of currently running VPN's route's. 1542 */ 1543 private boolean isAddressUnderVpn(InetAddress address) { 1544 synchronized (mVpns) { 1545 synchronized (mRoutesLock) { 1546 int uid = UserHandle.getCallingUserId(); 1547 Vpn vpn = mVpns.get(uid); 1548 if (vpn == null) { 1549 return false; 1550 } 1551 1552 // Check if an exemption exists for this address. 1553 for (LinkAddress destination : mExemptAddresses) { 1554 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1555 continue; 1556 } 1557 1558 int prefix = destination.getNetworkPrefixLength(); 1559 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1560 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1561 prefix); 1562 1563 if (addrMasked.equals(destMasked)) { 1564 return false; 1565 } 1566 } 1567 1568 // Finally check if the address is covered by the VPN. 1569 return vpn.isAddressCovered(address); 1570 } 1571 } 1572 } 1573 1574 /** 1575 * @deprecated use requestRouteToHostAddress instead 1576 * 1577 * Ensure that a network route exists to deliver traffic to the specified 1578 * host via the specified network interface. 1579 * @param networkType the type of the network over which traffic to the 1580 * specified host is to be routed 1581 * @param hostAddress the IP address of the host to which the route is 1582 * desired 1583 * @return {@code true} on success, {@code false} on failure 1584 */ 1585 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1586 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1587 1588 if (inetAddress == null) { 1589 return false; 1590 } 1591 1592 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1593 } 1594 1595 /** 1596 * Ensure that a network route exists to deliver traffic to the specified 1597 * host via the specified network interface. 1598 * @param networkType the type of the network over which traffic to the 1599 * specified host is to be routed 1600 * @param hostAddress the IP address of the host to which the route is 1601 * desired 1602 * @return {@code true} on success, {@code false} on failure 1603 */ 1604 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1605 String packageName) { 1606 enforceChangePermission(); 1607 if (mProtectedNetworks.contains(networkType)) { 1608 enforceConnectivityInternalPermission(); 1609 } 1610 boolean exempt; 1611 InetAddress addr; 1612 try { 1613 addr = InetAddress.getByAddress(hostAddress); 1614 } catch (UnknownHostException e) { 1615 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1616 return false; 1617 } 1618 // System apps may request routes bypassing the VPN to keep other networks working. 1619 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1620 exempt = true; 1621 } else { 1622 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1623 try { 1624 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1625 0); 1626 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1627 } catch (NameNotFoundException e) { 1628 throw new IllegalArgumentException("Failed to find calling package details", e); 1629 } 1630 } 1631 1632 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1633 // This can be either because the VPN's routes do not cover the destination or a 1634 // system application added an exemption that covers this destination. 1635 if (!exempt && isAddressUnderVpn(addr)) { 1636 return false; 1637 } 1638 1639 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1640 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1641 return false; 1642 } 1643 NetworkStateTracker tracker = mNetTrackers[networkType]; 1644 DetailedState netState = DetailedState.DISCONNECTED; 1645 if (tracker != null) { 1646 netState = tracker.getNetworkInfo().getDetailedState(); 1647 } 1648 1649 if ((netState != DetailedState.CONNECTED && 1650 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1651 tracker.isTeardownRequested()) { 1652 if (VDBG) { 1653 log("requestRouteToHostAddress on down network " 1654 + "(" + networkType + ") - dropped" 1655 + " tracker=" + tracker 1656 + " netState=" + netState 1657 + " isTeardownRequested=" 1658 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1659 } 1660 return false; 1661 } 1662 final long token = Binder.clearCallingIdentity(); 1663 try { 1664 LinkProperties lp = tracker.getLinkProperties(); 1665 boolean ok = addRouteToAddress(lp, addr, exempt); 1666 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1667 return ok; 1668 } finally { 1669 Binder.restoreCallingIdentity(token); 1670 } 1671 } 1672 1673 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1674 boolean exempt) { 1675 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt); 1676 } 1677 1678 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable) { 1679 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT); 1680 } 1681 1682 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt) { 1683 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt); 1684 } 1685 1686 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr) { 1687 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT); 1688 } 1689 1690 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1691 boolean toDefaultTable, boolean exempt) { 1692 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1693 if (bestRoute == null) { 1694 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1695 } else { 1696 String iface = bestRoute.getInterface(); 1697 if (bestRoute.getGateway().equals(addr)) { 1698 // if there is no better route, add the implied hostroute for our gateway 1699 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1700 } else { 1701 // if we will connect to this through another route, add a direct route 1702 // to it's gateway 1703 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1704 } 1705 } 1706 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt); 1707 } 1708 1709 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1710 boolean toDefaultTable, boolean exempt) { 1711 if ((lp == null) || (r == null)) { 1712 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1713 return false; 1714 } 1715 1716 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1717 loge("Error modifying route - too much recursion"); 1718 return false; 1719 } 1720 1721 String ifaceName = r.getInterface(); 1722 if(ifaceName == null) { 1723 loge("Error modifying route - no interface name"); 1724 return false; 1725 } 1726 if (r.hasGateway()) { 1727 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1728 if (bestRoute != null) { 1729 if (bestRoute.getGateway().equals(r.getGateway())) { 1730 // if there is no better route, add the implied hostroute for our gateway 1731 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1732 } else { 1733 // if we will connect to our gateway through another route, add a direct 1734 // route to it's gateway 1735 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1736 bestRoute.getGateway(), 1737 ifaceName); 1738 } 1739 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt); 1740 } 1741 } 1742 if (doAdd) { 1743 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1744 try { 1745 if (toDefaultTable) { 1746 synchronized (mRoutesLock) { 1747 // only track default table - only one apps can effect 1748 mAddedRoutes.add(r); 1749 mNetd.addRoute(ifaceName, r); 1750 if (exempt) { 1751 LinkAddress dest = r.getDestination(); 1752 if (!mExemptAddresses.contains(dest)) { 1753 mNetd.setHostExemption(dest); 1754 mExemptAddresses.add(dest); 1755 } 1756 } 1757 } 1758 } else { 1759 mNetd.addSecondaryRoute(ifaceName, r); 1760 } 1761 } catch (Exception e) { 1762 // never crash - catch them all 1763 if (DBG) loge("Exception trying to add a route: " + e); 1764 return false; 1765 } 1766 } else { 1767 // if we remove this one and there are no more like it, then refcount==0 and 1768 // we can remove it from the table 1769 if (toDefaultTable) { 1770 synchronized (mRoutesLock) { 1771 mAddedRoutes.remove(r); 1772 if (mAddedRoutes.contains(r) == false) { 1773 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1774 try { 1775 mNetd.removeRoute(ifaceName, r); 1776 LinkAddress dest = r.getDestination(); 1777 if (mExemptAddresses.contains(dest)) { 1778 mNetd.clearHostExemption(dest); 1779 mExemptAddresses.remove(dest); 1780 } 1781 } catch (Exception e) { 1782 // never crash - catch them all 1783 if (VDBG) loge("Exception trying to remove a route: " + e); 1784 return false; 1785 } 1786 } else { 1787 if (VDBG) log("not removing " + r + " as it's still in use"); 1788 } 1789 } 1790 } else { 1791 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1792 try { 1793 mNetd.removeSecondaryRoute(ifaceName, r); 1794 } catch (Exception e) { 1795 // never crash - catch them all 1796 if (VDBG) loge("Exception trying to remove a route: " + e); 1797 return false; 1798 } 1799 } 1800 } 1801 return true; 1802 } 1803 1804 /** 1805 * @see ConnectivityManager#getMobileDataEnabled() 1806 */ 1807 public boolean getMobileDataEnabled() { 1808 // TODO: This detail should probably be in DataConnectionTracker's 1809 // which is where we store the value and maybe make this 1810 // asynchronous. 1811 enforceAccessPermission(); 1812 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1813 Settings.Global.MOBILE_DATA, 1) == 1; 1814 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1815 return retVal; 1816 } 1817 1818 public void setDataDependency(int networkType, boolean met) { 1819 enforceConnectivityInternalPermission(); 1820 1821 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1822 (met ? ENABLED : DISABLED), networkType)); 1823 } 1824 1825 private void handleSetDependencyMet(int networkType, boolean met) { 1826 if (mNetTrackers[networkType] != null) { 1827 if (DBG) { 1828 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1829 } 1830 mNetTrackers[networkType].setDependencyMet(met); 1831 } 1832 } 1833 1834 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1835 @Override 1836 public void onUidRulesChanged(int uid, int uidRules) { 1837 // caller is NPMS, since we only register with them 1838 if (LOGD_RULES) { 1839 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1840 } 1841 1842 synchronized (mRulesLock) { 1843 // skip update when we've already applied rules 1844 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1845 if (oldRules == uidRules) return; 1846 1847 mUidRules.put(uid, uidRules); 1848 } 1849 1850 // TODO: notify UID when it has requested targeted updates 1851 } 1852 1853 @Override 1854 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1855 // caller is NPMS, since we only register with them 1856 if (LOGD_RULES) { 1857 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1858 } 1859 1860 synchronized (mRulesLock) { 1861 mMeteredIfaces.clear(); 1862 for (String iface : meteredIfaces) { 1863 mMeteredIfaces.add(iface); 1864 } 1865 } 1866 } 1867 1868 @Override 1869 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1870 // caller is NPMS, since we only register with them 1871 if (LOGD_RULES) { 1872 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1873 } 1874 1875 // kick off connectivity change broadcast for active network, since 1876 // global background policy change is radical. 1877 final int networkType = mActiveDefaultNetwork; 1878 if (isNetworkTypeValid(networkType)) { 1879 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1880 if (tracker != null) { 1881 final NetworkInfo info = tracker.getNetworkInfo(); 1882 if (info != null && info.isConnected()) { 1883 sendConnectedBroadcast(info); 1884 } 1885 } 1886 } 1887 } 1888 }; 1889 1890 /** 1891 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1892 */ 1893 public void setMobileDataEnabled(boolean enabled) { 1894 enforceChangePermission(); 1895 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1896 1897 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1898 (enabled ? ENABLED : DISABLED), 0)); 1899 } 1900 1901 private void handleSetMobileData(boolean enabled) { 1902 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1903 if (VDBG) { 1904 log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1905 } 1906 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled); 1907 } 1908 if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) { 1909 if (VDBG) { 1910 log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled); 1911 } 1912 mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled); 1913 } 1914 } 1915 1916 @Override 1917 public void setPolicyDataEnable(int networkType, boolean enabled) { 1918 // only someone like NPMS should only be calling us 1919 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1920 1921 mHandler.sendMessage(mHandler.obtainMessage( 1922 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1923 } 1924 1925 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1926 if (isNetworkTypeValid(networkType)) { 1927 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1928 if (tracker != null) { 1929 tracker.setPolicyDataEnable(enabled); 1930 } 1931 } 1932 } 1933 1934 private void enforceAccessPermission() { 1935 mContext.enforceCallingOrSelfPermission( 1936 android.Manifest.permission.ACCESS_NETWORK_STATE, 1937 "ConnectivityService"); 1938 } 1939 1940 private void enforceChangePermission() { 1941 mContext.enforceCallingOrSelfPermission( 1942 android.Manifest.permission.CHANGE_NETWORK_STATE, 1943 "ConnectivityService"); 1944 } 1945 1946 // TODO Make this a special check when it goes public 1947 private void enforceTetherChangePermission() { 1948 mContext.enforceCallingOrSelfPermission( 1949 android.Manifest.permission.CHANGE_NETWORK_STATE, 1950 "ConnectivityService"); 1951 } 1952 1953 private void enforceTetherAccessPermission() { 1954 mContext.enforceCallingOrSelfPermission( 1955 android.Manifest.permission.ACCESS_NETWORK_STATE, 1956 "ConnectivityService"); 1957 } 1958 1959 private void enforceConnectivityInternalPermission() { 1960 mContext.enforceCallingOrSelfPermission( 1961 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1962 "ConnectivityService"); 1963 } 1964 1965 private void enforceMarkNetworkSocketPermission() { 1966 //Media server special case 1967 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1968 return; 1969 } 1970 mContext.enforceCallingOrSelfPermission( 1971 android.Manifest.permission.MARK_NETWORK_SOCKET, 1972 "ConnectivityService"); 1973 } 1974 1975 /** 1976 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1977 * network, we ignore it. If it is for the active network, we send out a 1978 * broadcast. But first, we check whether it might be possible to connect 1979 * to a different network. 1980 * @param info the {@code NetworkInfo} for the network 1981 */ 1982 private void handleDisconnect(NetworkInfo info) { 1983 1984 int prevNetType = info.getType(); 1985 1986 mNetTrackers[prevNetType].setTeardownRequested(false); 1987 1988 // Remove idletimer previously setup in {@code handleConnect} 1989 removeDataActivityTracking(prevNetType); 1990 1991 /* 1992 * If the disconnected network is not the active one, then don't report 1993 * this as a loss of connectivity. What probably happened is that we're 1994 * getting the disconnect for a network that we explicitly disabled 1995 * in accordance with network preference policies. 1996 */ 1997 if (!mNetConfigs[prevNetType].isDefault()) { 1998 List<Integer> pids = mNetRequestersPids[prevNetType]; 1999 for (Integer pid : pids) { 2000 // will remove them because the net's no longer connected 2001 // need to do this now as only now do we know the pids and 2002 // can properly null things that are no longer referenced. 2003 reassessPidDns(pid.intValue(), false); 2004 } 2005 } 2006 2007 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2008 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2009 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2010 if (info.isFailover()) { 2011 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2012 info.setFailover(false); 2013 } 2014 if (info.getReason() != null) { 2015 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2016 } 2017 if (info.getExtraInfo() != null) { 2018 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2019 info.getExtraInfo()); 2020 } 2021 2022 if (mNetConfigs[prevNetType].isDefault()) { 2023 tryFailover(prevNetType); 2024 if (mActiveDefaultNetwork != -1) { 2025 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2026 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2027 } else { 2028 mDefaultInetConditionPublished = 0; // we're not connected anymore 2029 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2030 } 2031 } 2032 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2033 2034 // Reset interface if no other connections are using the same interface 2035 boolean doReset = true; 2036 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2037 if (linkProperties != null) { 2038 String oldIface = linkProperties.getInterfaceName(); 2039 if (TextUtils.isEmpty(oldIface) == false) { 2040 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2041 if (networkStateTracker == null) continue; 2042 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2043 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2044 LinkProperties l = networkStateTracker.getLinkProperties(); 2045 if (l == null) continue; 2046 if (oldIface.equals(l.getInterfaceName())) { 2047 doReset = false; 2048 break; 2049 } 2050 } 2051 } 2052 } 2053 } 2054 2055 // do this before we broadcast the change 2056 handleConnectivityChange(prevNetType, doReset); 2057 2058 final Intent immediateIntent = new Intent(intent); 2059 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2060 sendStickyBroadcast(immediateIntent); 2061 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2062 /* 2063 * If the failover network is already connected, then immediately send 2064 * out a followup broadcast indicating successful failover 2065 */ 2066 if (mActiveDefaultNetwork != -1) { 2067 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2068 getConnectivityChangeDelay()); 2069 } 2070 } 2071 2072 private void tryFailover(int prevNetType) { 2073 /* 2074 * If this is a default network, check if other defaults are available. 2075 * Try to reconnect on all available and let them hash it out when 2076 * more than one connects. 2077 */ 2078 if (mNetConfigs[prevNetType].isDefault()) { 2079 if (mActiveDefaultNetwork == prevNetType) { 2080 if (DBG) { 2081 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2082 } 2083 mActiveDefaultNetwork = -1; 2084 } 2085 2086 // don't signal a reconnect for anything lower or equal priority than our 2087 // current connected default 2088 // TODO - don't filter by priority now - nice optimization but risky 2089// int currentPriority = -1; 2090// if (mActiveDefaultNetwork != -1) { 2091// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2092// } 2093 2094 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2095 if (checkType == prevNetType) continue; 2096 if (mNetConfigs[checkType] == null) continue; 2097 if (!mNetConfigs[checkType].isDefault()) continue; 2098 if (mNetTrackers[checkType] == null) continue; 2099 2100// Enabling the isAvailable() optimization caused mobile to not get 2101// selected if it was in the middle of error handling. Specifically 2102// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2103// would not be available and we wouldn't get connected to anything. 2104// So removing the isAvailable() optimization below for now. TODO: This 2105// optimization should work and we need to investigate why it doesn't work. 2106// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2107// complete before it is really complete. 2108 2109// if (!mNetTrackers[checkType].isAvailable()) continue; 2110 2111// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2112 2113 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2114 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2115 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2116 checkInfo.setFailover(true); 2117 checkTracker.reconnect(); 2118 } 2119 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2120 } 2121 } 2122 } 2123 2124 public void sendConnectedBroadcast(NetworkInfo info) { 2125 enforceConnectivityInternalPermission(); 2126 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2127 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2128 } 2129 2130 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2131 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2132 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2133 } 2134 2135 private void sendInetConditionBroadcast(NetworkInfo info) { 2136 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2137 } 2138 2139 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2140 if (mLockdownTracker != null) { 2141 info = mLockdownTracker.augmentNetworkInfo(info); 2142 } 2143 2144 Intent intent = new Intent(bcastType); 2145 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2146 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2147 if (info.isFailover()) { 2148 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2149 info.setFailover(false); 2150 } 2151 if (info.getReason() != null) { 2152 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2153 } 2154 if (info.getExtraInfo() != null) { 2155 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2156 info.getExtraInfo()); 2157 } 2158 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2159 return intent; 2160 } 2161 2162 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2163 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2164 } 2165 2166 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2167 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2168 } 2169 2170 private void sendDataActivityBroadcast(int deviceType, boolean active) { 2171 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2172 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2173 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2174 final long ident = Binder.clearCallingIdentity(); 2175 try { 2176 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2177 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2178 } finally { 2179 Binder.restoreCallingIdentity(ident); 2180 } 2181 } 2182 2183 /** 2184 * Called when an attempt to fail over to another network has failed. 2185 * @param info the {@link NetworkInfo} for the failed network 2186 */ 2187 private void handleConnectionFailure(NetworkInfo info) { 2188 mNetTrackers[info.getType()].setTeardownRequested(false); 2189 2190 String reason = info.getReason(); 2191 String extraInfo = info.getExtraInfo(); 2192 2193 String reasonText; 2194 if (reason == null) { 2195 reasonText = "."; 2196 } else { 2197 reasonText = " (" + reason + ")."; 2198 } 2199 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 2200 2201 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2202 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2203 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2204 if (getActiveNetworkInfo() == null) { 2205 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2206 } 2207 if (reason != null) { 2208 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 2209 } 2210 if (extraInfo != null) { 2211 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 2212 } 2213 if (info.isFailover()) { 2214 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2215 info.setFailover(false); 2216 } 2217 2218 if (mNetConfigs[info.getType()].isDefault()) { 2219 tryFailover(info.getType()); 2220 if (mActiveDefaultNetwork != -1) { 2221 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2222 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2223 } else { 2224 mDefaultInetConditionPublished = 0; 2225 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2226 } 2227 } 2228 2229 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2230 2231 final Intent immediateIntent = new Intent(intent); 2232 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2233 sendStickyBroadcast(immediateIntent); 2234 sendStickyBroadcast(intent); 2235 /* 2236 * If the failover network is already connected, then immediately send 2237 * out a followup broadcast indicating successful failover 2238 */ 2239 if (mActiveDefaultNetwork != -1) { 2240 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 2241 } 2242 } 2243 2244 private void sendStickyBroadcast(Intent intent) { 2245 synchronized(this) { 2246 if (!mSystemReady) { 2247 mInitialBroadcast = new Intent(intent); 2248 } 2249 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2250 if (VDBG) { 2251 log("sendStickyBroadcast: action=" + intent.getAction()); 2252 } 2253 2254 final long ident = Binder.clearCallingIdentity(); 2255 try { 2256 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2257 } finally { 2258 Binder.restoreCallingIdentity(ident); 2259 } 2260 } 2261 } 2262 2263 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2264 if (delayMs <= 0) { 2265 sendStickyBroadcast(intent); 2266 } else { 2267 if (VDBG) { 2268 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2269 + intent.getAction()); 2270 } 2271 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2272 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2273 } 2274 } 2275 2276 void systemReady() { 2277 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2278 loadGlobalProxy(); 2279 2280 synchronized(this) { 2281 mSystemReady = true; 2282 if (mInitialBroadcast != null) { 2283 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2284 mInitialBroadcast = null; 2285 } 2286 } 2287 // load the global proxy at startup 2288 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2289 2290 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2291 // for user to unlock device. 2292 if (!updateLockdownVpn()) { 2293 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2294 mContext.registerReceiver(mUserPresentReceiver, filter); 2295 } 2296 } 2297 2298 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2299 @Override 2300 public void onReceive(Context context, Intent intent) { 2301 // Try creating lockdown tracker, since user present usually means 2302 // unlocked keystore. 2303 if (updateLockdownVpn()) { 2304 mContext.unregisterReceiver(this); 2305 } 2306 } 2307 }; 2308 2309 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2310 if (((type != mNetworkPreference) 2311 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2312 || (mNetworkPreference == mActiveDefaultNetwork)) { 2313 return false; 2314 } 2315 return true; 2316 } 2317 2318 private void handleConnect(NetworkInfo info) { 2319 final int newNetType = info.getType(); 2320 2321 setupDataActivityTracking(newNetType); 2322 2323 // snapshot isFailover, because sendConnectedBroadcast() resets it 2324 boolean isFailover = info.isFailover(); 2325 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2326 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2327 2328 if (VDBG) { 2329 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2330 + " isFailover" + isFailover); 2331 } 2332 2333 // if this is a default net and other default is running 2334 // kill the one not preferred 2335 if (mNetConfigs[newNetType].isDefault()) { 2336 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2337 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2338 // tear down the other 2339 NetworkStateTracker otherNet = 2340 mNetTrackers[mActiveDefaultNetwork]; 2341 if (DBG) { 2342 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2343 " teardown"); 2344 } 2345 if (!teardown(otherNet)) { 2346 loge("Network declined teardown request"); 2347 teardown(thisNet); 2348 return; 2349 } 2350 } else { 2351 // don't accept this one 2352 if (VDBG) { 2353 log("Not broadcasting CONNECT_ACTION " + 2354 "to torn down network " + info.getTypeName()); 2355 } 2356 teardown(thisNet); 2357 return; 2358 } 2359 } 2360 synchronized (ConnectivityService.this) { 2361 // have a new default network, release the transition wakelock in a second 2362 // if it's held. The second pause is to allow apps to reconnect over the 2363 // new network 2364 if (mNetTransitionWakeLock.isHeld()) { 2365 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2366 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2367 mNetTransitionWakeLockSerialNumber, 0), 2368 1000); 2369 } 2370 } 2371 mActiveDefaultNetwork = newNetType; 2372 // this will cause us to come up initially as unconnected and switching 2373 // to connected after our normal pause unless somebody reports us as reall 2374 // disconnected 2375 mDefaultInetConditionPublished = 0; 2376 mDefaultConnectionSequence++; 2377 mInetConditionChangeInFlight = false; 2378 // Don't do this - if we never sign in stay, grey 2379 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2380 updateNetworkSettings(thisNet); 2381 } 2382 thisNet.setTeardownRequested(false); 2383 updateMtuSizeSettings(thisNet); 2384 handleConnectivityChange(newNetType, false); 2385 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2386 2387 // notify battery stats service about this network 2388 if (thisIface != null) { 2389 try { 2390 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2391 } catch (RemoteException e) { 2392 // ignored; service lives in system_server 2393 } 2394 } 2395 } 2396 2397 /** @hide */ 2398 @Override 2399 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2400 enforceConnectivityInternalPermission(); 2401 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2402 mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2403 } 2404 2405 /** 2406 * Setup data activity tracking for the given network interface. 2407 * 2408 * Every {@code setupDataActivityTracking} should be paired with a 2409 * {@link removeDataActivityTracking} for cleanup. 2410 */ 2411 private void setupDataActivityTracking(int type) { 2412 final NetworkStateTracker thisNet = mNetTrackers[type]; 2413 final String iface = thisNet.getLinkProperties().getInterfaceName(); 2414 2415 final int timeout; 2416 2417 if (ConnectivityManager.isNetworkTypeMobile(type)) { 2418 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2419 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2420 5); 2421 // Canonicalize mobile network type 2422 type = ConnectivityManager.TYPE_MOBILE; 2423 } else if (ConnectivityManager.TYPE_WIFI == type) { 2424 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2425 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2426 0); 2427 } else { 2428 // do not track any other networks 2429 timeout = 0; 2430 } 2431 2432 if (timeout > 0 && iface != null) { 2433 try { 2434 mNetd.addIdleTimer(iface, timeout, Integer.toString(type)); 2435 } catch (RemoteException e) { 2436 } 2437 } 2438 } 2439 2440 /** 2441 * Remove data activity tracking when network disconnects. 2442 */ 2443 private void removeDataActivityTracking(int type) { 2444 final NetworkStateTracker net = mNetTrackers[type]; 2445 final String iface = net.getLinkProperties().getInterfaceName(); 2446 2447 if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) || 2448 ConnectivityManager.TYPE_WIFI == type)) { 2449 try { 2450 // the call fails silently if no idletimer setup for this interface 2451 mNetd.removeIdleTimer(iface); 2452 } catch (RemoteException e) { 2453 } 2454 } 2455 } 2456 2457 /** 2458 * After a change in the connectivity state of a network. We're mainly 2459 * concerned with making sure that the list of DNS servers is set up 2460 * according to which networks are connected, and ensuring that the 2461 * right routing table entries exist. 2462 */ 2463 private void handleConnectivityChange(int netType, boolean doReset) { 2464 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2465 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2466 if (VDBG) { 2467 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2468 + " resetMask=" + resetMask); 2469 } 2470 2471 /* 2472 * If a non-default network is enabled, add the host routes that 2473 * will allow it's DNS servers to be accessed. 2474 */ 2475 handleDnsConfigurationChange(netType); 2476 2477 LinkProperties curLp = mCurrentLinkProperties[netType]; 2478 LinkProperties newLp = null; 2479 2480 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2481 newLp = mNetTrackers[netType].getLinkProperties(); 2482 if (VDBG) { 2483 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2484 " doReset=" + doReset + " resetMask=" + resetMask + 2485 "\n curLp=" + curLp + 2486 "\n newLp=" + newLp); 2487 } 2488 2489 if (curLp != null) { 2490 if (curLp.isIdenticalInterfaceName(newLp)) { 2491 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2492 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2493 for (LinkAddress linkAddr : car.removed) { 2494 if (linkAddr.getAddress() instanceof Inet4Address) { 2495 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2496 } 2497 if (linkAddr.getAddress() instanceof Inet6Address) { 2498 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2499 } 2500 } 2501 if (DBG) { 2502 log("handleConnectivityChange: addresses changed" + 2503 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2504 "\n car=" + car); 2505 } 2506 } else { 2507 if (VDBG) { 2508 log("handleConnectivityChange: addresses are the same reset per" + 2509 " doReset linkProperty[" + netType + "]:" + 2510 " resetMask=" + resetMask); 2511 } 2512 } 2513 } else { 2514 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2515 if (DBG) { 2516 log("handleConnectivityChange: interface not not equivalent reset both" + 2517 " linkProperty[" + netType + "]:" + 2518 " resetMask=" + resetMask); 2519 } 2520 } 2521 } 2522 if (mNetConfigs[netType].isDefault()) { 2523 handleApplyDefaultProxy(newLp.getHttpProxy()); 2524 } 2525 } else { 2526 if (VDBG) { 2527 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2528 " doReset=" + doReset + " resetMask=" + resetMask + 2529 "\n curLp=" + curLp + 2530 "\n newLp= null"); 2531 } 2532 } 2533 mCurrentLinkProperties[netType] = newLp; 2534 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt); 2535 2536 if (resetMask != 0 || resetDns) { 2537 if (VDBG) log("handleConnectivityChange: resetting"); 2538 if (curLp != null) { 2539 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2540 for (String iface : curLp.getAllInterfaceNames()) { 2541 if (TextUtils.isEmpty(iface) == false) { 2542 if (resetMask != 0) { 2543 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2544 NetworkUtils.resetConnections(iface, resetMask); 2545 2546 // Tell VPN the interface is down. It is a temporary 2547 // but effective fix to make VPN aware of the change. 2548 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2549 synchronized(mVpns) { 2550 for (int i = 0; i < mVpns.size(); i++) { 2551 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2552 } 2553 } 2554 } 2555 } 2556 if (resetDns) { 2557 flushVmDnsCache(); 2558 if (VDBG) log("resetting DNS cache for " + iface); 2559 try { 2560 mNetd.flushInterfaceDnsCache(iface); 2561 } catch (Exception e) { 2562 // never crash - catch them all 2563 if (DBG) loge("Exception resetting dns cache: " + e); 2564 } 2565 } 2566 } else { 2567 loge("Can't reset connection for type "+netType); 2568 } 2569 } 2570 } 2571 } 2572 2573 // Update 464xlat state. 2574 NetworkStateTracker tracker = mNetTrackers[netType]; 2575 if (mClat.requiresClat(netType, tracker)) { 2576 2577 // If the connection was previously using clat, but is not using it now, stop the clat 2578 // daemon. Normally, this happens automatically when the connection disconnects, but if 2579 // the disconnect is not reported, or if the connection's LinkProperties changed for 2580 // some other reason (e.g., handoff changes the IP addresses on the link), it would 2581 // still be running. If it's not running, then stopping it is a no-op. 2582 if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) { 2583 mClat.stopClat(); 2584 } 2585 // If the link requires clat to be running, then start the daemon now. 2586 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2587 mClat.startClat(tracker); 2588 } else { 2589 mClat.stopClat(); 2590 } 2591 } 2592 2593 // TODO: Temporary notifying upstread change to Tethering. 2594 // @see bug/4455071 2595 /** Notify TetheringService if interface name has been changed. */ 2596 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2597 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2598 if (isTetheringSupported()) { 2599 mTethering.handleTetherIfaceChange(); 2600 } 2601 } 2602 } 2603 2604 /** 2605 * Add and remove routes using the old properties (null if not previously connected), 2606 * new properties (null if becoming disconnected). May even be double null, which 2607 * is a noop. 2608 * Uses isLinkDefault to determine if default routes should be set or conversely if 2609 * host routes should be set to the dns servers 2610 * returns a boolean indicating the routes changed 2611 */ 2612 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2613 boolean isLinkDefault, boolean exempt) { 2614 Collection<RouteInfo> routesToAdd = null; 2615 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2616 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2617 if (curLp != null) { 2618 // check for the delta between the current set and the new 2619 routeDiff = curLp.compareAllRoutes(newLp); 2620 dnsDiff = curLp.compareDnses(newLp); 2621 } else if (newLp != null) { 2622 routeDiff.added = newLp.getAllRoutes(); 2623 dnsDiff.added = newLp.getDnses(); 2624 } 2625 2626 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2627 2628 for (RouteInfo r : routeDiff.removed) { 2629 if (isLinkDefault || ! r.isDefaultRoute()) { 2630 if (VDBG) log("updateRoutes: default remove route r=" + r); 2631 removeRoute(curLp, r, TO_DEFAULT_TABLE); 2632 } 2633 if (isLinkDefault == false) { 2634 // remove from a secondary route table 2635 removeRoute(curLp, r, TO_SECONDARY_TABLE); 2636 } 2637 } 2638 2639 if (!isLinkDefault) { 2640 // handle DNS routes 2641 if (routesChanged) { 2642 // routes changed - remove all old dns entries and add new 2643 if (curLp != null) { 2644 for (InetAddress oldDns : curLp.getDnses()) { 2645 removeRouteToAddress(curLp, oldDns); 2646 } 2647 } 2648 if (newLp != null) { 2649 for (InetAddress newDns : newLp.getDnses()) { 2650 addRouteToAddress(newLp, newDns, exempt); 2651 } 2652 } 2653 } else { 2654 // no change in routes, check for change in dns themselves 2655 for (InetAddress oldDns : dnsDiff.removed) { 2656 removeRouteToAddress(curLp, oldDns); 2657 } 2658 for (InetAddress newDns : dnsDiff.added) { 2659 addRouteToAddress(newLp, newDns, exempt); 2660 } 2661 } 2662 } 2663 2664 for (RouteInfo r : routeDiff.added) { 2665 if (isLinkDefault || ! r.isDefaultRoute()) { 2666 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt); 2667 } else { 2668 // add to a secondary route table 2669 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT); 2670 2671 // many radios add a default route even when we don't want one. 2672 // remove the default route unless somebody else has asked for it 2673 String ifaceName = newLp.getInterfaceName(); 2674 synchronized (mRoutesLock) { 2675 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2676 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2677 try { 2678 mNetd.removeRoute(ifaceName, r); 2679 } catch (Exception e) { 2680 // never crash - catch them all 2681 if (DBG) loge("Exception trying to remove a route: " + e); 2682 } 2683 } 2684 } 2685 } 2686 } 2687 2688 return routesChanged; 2689 } 2690 2691 /** 2692 * Reads the network specific MTU size from reources. 2693 * and set it on it's iface. 2694 */ 2695 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2696 final String iface = nt.getLinkProperties().getInterfaceName(); 2697 final int mtu = nt.getLinkProperties().getMtu(); 2698 2699 if (mtu < 68 || mtu > 10000) { 2700 loge("Unexpected mtu value: " + mtu + ", " + nt); 2701 return; 2702 } 2703 2704 try { 2705 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2706 mNetd.setMtu(iface, mtu); 2707 } catch (Exception e) { 2708 Slog.e(TAG, "exception in setMtu()" + e); 2709 } 2710 } 2711 2712 /** 2713 * Reads the network specific TCP buffer sizes from SystemProperties 2714 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2715 * wide use 2716 */ 2717 private void updateNetworkSettings(NetworkStateTracker nt) { 2718 String key = nt.getTcpBufferSizesPropName(); 2719 String bufferSizes = key == null ? null : SystemProperties.get(key); 2720 2721 if (TextUtils.isEmpty(bufferSizes)) { 2722 if (VDBG) log(key + " not found in system properties. Using defaults"); 2723 2724 // Setting to default values so we won't be stuck to previous values 2725 key = "net.tcp.buffersize.default"; 2726 bufferSizes = SystemProperties.get(key); 2727 } 2728 2729 // Set values in kernel 2730 if (bufferSizes.length() != 0) { 2731 if (VDBG) { 2732 log("Setting TCP values: [" + bufferSizes 2733 + "] which comes from [" + key + "]"); 2734 } 2735 setBufferSize(bufferSizes); 2736 } 2737 2738 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2739 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2740 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2741 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2742 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2743 if (rwndValue != 0) { 2744 SystemProperties.set(sysctlKey, rwndValue.toString()); 2745 } 2746 } 2747 2748 /** 2749 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2750 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2751 * 2752 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2753 * writeMin, writeInitial, writeMax" 2754 */ 2755 private void setBufferSize(String bufferSizes) { 2756 try { 2757 String[] values = bufferSizes.split(","); 2758 2759 if (values.length == 6) { 2760 final String prefix = "/sys/kernel/ipv4/tcp_"; 2761 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2762 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2763 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2764 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2765 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2766 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2767 } else { 2768 loge("Invalid buffersize string: " + bufferSizes); 2769 } 2770 } catch (IOException e) { 2771 loge("Can't set tcp buffer sizes:" + e); 2772 } 2773 } 2774 2775 /** 2776 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2777 * on the highest priority active net which this process requested. 2778 * If there aren't any, clear it out 2779 */ 2780 private void reassessPidDns(int pid, boolean doBump) 2781 { 2782 if (VDBG) log("reassessPidDns for pid " + pid); 2783 Integer myPid = new Integer(pid); 2784 for(int i : mPriorityList) { 2785 if (mNetConfigs[i].isDefault()) { 2786 continue; 2787 } 2788 NetworkStateTracker nt = mNetTrackers[i]; 2789 if (nt.getNetworkInfo().isConnected() && 2790 !nt.isTeardownRequested()) { 2791 LinkProperties p = nt.getLinkProperties(); 2792 if (p == null) continue; 2793 if (mNetRequestersPids[i].contains(myPid)) { 2794 try { 2795 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2796 } catch (Exception e) { 2797 Slog.e(TAG, "exception reasseses pid dns: " + e); 2798 } 2799 return; 2800 } 2801 } 2802 } 2803 // nothing found - delete 2804 try { 2805 mNetd.clearDnsInterfaceForPid(pid); 2806 } catch (Exception e) { 2807 Slog.e(TAG, "exception clear interface from pid: " + e); 2808 } 2809 } 2810 2811 private void flushVmDnsCache() { 2812 /* 2813 * Tell the VMs to toss their DNS caches 2814 */ 2815 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2816 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2817 /* 2818 * Connectivity events can happen before boot has completed ... 2819 */ 2820 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2821 final long ident = Binder.clearCallingIdentity(); 2822 try { 2823 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2824 } finally { 2825 Binder.restoreCallingIdentity(ident); 2826 } 2827 } 2828 2829 // Caller must grab mDnsLock. 2830 private void updateDnsLocked(String network, String iface, 2831 Collection<InetAddress> dnses, String domains, boolean defaultDns) { 2832 int last = 0; 2833 if (dnses.size() == 0 && mDefaultDns != null) { 2834 dnses = new ArrayList(); 2835 dnses.add(mDefaultDns); 2836 if (DBG) { 2837 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2838 } 2839 } 2840 2841 try { 2842 mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains); 2843 if (defaultDns) { 2844 mNetd.setDefaultInterfaceForDns(iface); 2845 } 2846 2847 for (InetAddress dns : dnses) { 2848 ++last; 2849 String key = "net.dns" + last; 2850 String value = dns.getHostAddress(); 2851 SystemProperties.set(key, value); 2852 } 2853 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2854 String key = "net.dns" + i; 2855 SystemProperties.set(key, ""); 2856 } 2857 mNumDnsEntries = last; 2858 } catch (Exception e) { 2859 loge("exception setting default dns interface: " + e); 2860 } 2861 } 2862 2863 private void handleDnsConfigurationChange(int netType) { 2864 // add default net's dns entries 2865 NetworkStateTracker nt = mNetTrackers[netType]; 2866 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2867 LinkProperties p = nt.getLinkProperties(); 2868 if (p == null) return; 2869 Collection<InetAddress> dnses = p.getDnses(); 2870 if (mNetConfigs[netType].isDefault()) { 2871 String network = nt.getNetworkInfo().getTypeName(); 2872 synchronized (mDnsLock) { 2873 updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true); 2874 } 2875 } else { 2876 try { 2877 mNetd.setDnsServersForInterface(p.getInterfaceName(), 2878 NetworkUtils.makeStrings(dnses), p.getDomains()); 2879 } catch (Exception e) { 2880 if (DBG) loge("exception setting dns servers: " + e); 2881 } 2882 // set per-pid dns for attached secondary nets 2883 List<Integer> pids = mNetRequestersPids[netType]; 2884 for (Integer pid : pids) { 2885 try { 2886 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2887 } catch (Exception e) { 2888 Slog.e(TAG, "exception setting interface for pid: " + e); 2889 } 2890 } 2891 } 2892 flushVmDnsCache(); 2893 } 2894 } 2895 2896 private int getRestoreDefaultNetworkDelay(int networkType) { 2897 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2898 NETWORK_RESTORE_DELAY_PROP_NAME); 2899 if(restoreDefaultNetworkDelayStr != null && 2900 restoreDefaultNetworkDelayStr.length() != 0) { 2901 try { 2902 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2903 } catch (NumberFormatException e) { 2904 } 2905 } 2906 // if the system property isn't set, use the value for the apn type 2907 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2908 2909 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2910 (mNetConfigs[networkType] != null)) { 2911 ret = mNetConfigs[networkType].restoreTime; 2912 } 2913 return ret; 2914 } 2915 2916 @Override 2917 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2918 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2919 if (mContext.checkCallingOrSelfPermission( 2920 android.Manifest.permission.DUMP) 2921 != PackageManager.PERMISSION_GRANTED) { 2922 pw.println("Permission Denial: can't dump ConnectivityService " + 2923 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2924 Binder.getCallingUid()); 2925 return; 2926 } 2927 2928 // TODO: add locking to get atomic snapshot 2929 pw.println(); 2930 for (int i = 0; i < mNetTrackers.length; i++) { 2931 final NetworkStateTracker nst = mNetTrackers[i]; 2932 if (nst != null) { 2933 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 2934 pw.increaseIndent(); 2935 if (nst.getNetworkInfo().isConnected()) { 2936 pw.println("Active network: " + nst.getNetworkInfo(). 2937 getTypeName()); 2938 } 2939 pw.println(nst.getNetworkInfo()); 2940 pw.println(nst.getLinkProperties()); 2941 pw.println(nst); 2942 pw.println(); 2943 pw.decreaseIndent(); 2944 } 2945 } 2946 2947 pw.println("Network Requester Pids:"); 2948 pw.increaseIndent(); 2949 for (int net : mPriorityList) { 2950 String pidString = net + ": "; 2951 for (Integer pid : mNetRequestersPids[net]) { 2952 pidString = pidString + pid.toString() + ", "; 2953 } 2954 pw.println(pidString); 2955 } 2956 pw.println(); 2957 pw.decreaseIndent(); 2958 2959 pw.println("FeatureUsers:"); 2960 pw.increaseIndent(); 2961 for (Object requester : mFeatureUsers) { 2962 pw.println(requester.toString()); 2963 } 2964 pw.println(); 2965 pw.decreaseIndent(); 2966 2967 synchronized (this) { 2968 pw.println("NetworkTranstionWakeLock is currently " + 2969 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2970 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2971 } 2972 pw.println(); 2973 2974 mTethering.dump(fd, pw, args); 2975 2976 if (mInetLog != null) { 2977 pw.println(); 2978 pw.println("Inet condition reports:"); 2979 pw.increaseIndent(); 2980 for(int i = 0; i < mInetLog.size(); i++) { 2981 pw.println(mInetLog.get(i)); 2982 } 2983 pw.decreaseIndent(); 2984 } 2985 } 2986 2987 // must be stateless - things change under us. 2988 private class NetworkStateTrackerHandler extends Handler { 2989 public NetworkStateTrackerHandler(Looper looper) { 2990 super(looper); 2991 } 2992 2993 @Override 2994 public void handleMessage(Message msg) { 2995 NetworkInfo info; 2996 switch (msg.what) { 2997 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2998 info = (NetworkInfo) msg.obj; 2999 NetworkInfo.State state = info.getState(); 3000 3001 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3002 (state == NetworkInfo.State.DISCONNECTED) || 3003 (state == NetworkInfo.State.SUSPENDED)) { 3004 log("ConnectivityChange for " + 3005 info.getTypeName() + ": " + 3006 state + "/" + info.getDetailedState()); 3007 } 3008 3009 // Since mobile has the notion of a network/apn that can be used for 3010 // provisioning we need to check every time we're connected as 3011 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3012 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3013 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3014 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3015 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3016 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3017 Settings.Global.DEVICE_PROVISIONED, 0)) 3018 && (((state == NetworkInfo.State.CONNECTED) 3019 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3020 || info.isConnectedToProvisioningNetwork())) { 3021 log("ConnectivityChange checkMobileProvisioning for" 3022 + " TYPE_MOBILE or ProvisioningNetwork"); 3023 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3024 } 3025 3026 EventLogTags.writeConnectivityStateChanged( 3027 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3028 3029 if (info.getDetailedState() == 3030 NetworkInfo.DetailedState.FAILED) { 3031 handleConnectionFailure(info); 3032 } else if (info.isConnectedToProvisioningNetwork()) { 3033 /** 3034 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3035 * for now its an in between network, its a network that 3036 * is actually a default network but we don't want it to be 3037 * announced as such to keep background applications from 3038 * trying to use it. It turns out that some still try so we 3039 * take the additional step of clearing any default routes 3040 * to the link that may have incorrectly setup by the lower 3041 * levels. 3042 */ 3043 LinkProperties lp = getLinkProperties(info.getType()); 3044 if (DBG) { 3045 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3046 } 3047 3048 // Clear any default routes setup by the radio so 3049 // any activity by applications trying to use this 3050 // connection will fail until the provisioning network 3051 // is enabled. 3052 for (RouteInfo r : lp.getRoutes()) { 3053 removeRoute(lp, r, TO_DEFAULT_TABLE); 3054 } 3055 } else if (state == NetworkInfo.State.DISCONNECTED) { 3056 handleDisconnect(info); 3057 } else if (state == NetworkInfo.State.SUSPENDED) { 3058 // TODO: need to think this over. 3059 // the logic here is, handle SUSPENDED the same as 3060 // DISCONNECTED. The only difference being we are 3061 // broadcasting an intent with NetworkInfo that's 3062 // suspended. This allows the applications an 3063 // opportunity to handle DISCONNECTED and SUSPENDED 3064 // differently, or not. 3065 handleDisconnect(info); 3066 } else if (state == NetworkInfo.State.CONNECTED) { 3067 handleConnect(info); 3068 } 3069 if (mLockdownTracker != null) { 3070 mLockdownTracker.onNetworkInfoChanged(info); 3071 } 3072 break; 3073 } 3074 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3075 info = (NetworkInfo) msg.obj; 3076 // TODO: Temporary allowing network configuration 3077 // change not resetting sockets. 3078 // @see bug/4455071 3079 handleConnectivityChange(info.getType(), false); 3080 break; 3081 } 3082 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3083 info = (NetworkInfo) msg.obj; 3084 int type = info.getType(); 3085 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3086 break; 3087 } 3088 } 3089 } 3090 } 3091 3092 private class InternalHandler extends Handler { 3093 public InternalHandler(Looper looper) { 3094 super(looper); 3095 } 3096 3097 @Override 3098 public void handleMessage(Message msg) { 3099 NetworkInfo info; 3100 switch (msg.what) { 3101 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3102 String causedBy = null; 3103 synchronized (ConnectivityService.this) { 3104 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3105 mNetTransitionWakeLock.isHeld()) { 3106 mNetTransitionWakeLock.release(); 3107 causedBy = mNetTransitionWakeLockCausedBy; 3108 } 3109 } 3110 if (causedBy != null) { 3111 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3112 } 3113 break; 3114 } 3115 case EVENT_RESTORE_DEFAULT_NETWORK: { 3116 FeatureUser u = (FeatureUser)msg.obj; 3117 u.expire(); 3118 break; 3119 } 3120 case EVENT_INET_CONDITION_CHANGE: { 3121 int netType = msg.arg1; 3122 int condition = msg.arg2; 3123 handleInetConditionChange(netType, condition); 3124 break; 3125 } 3126 case EVENT_INET_CONDITION_HOLD_END: { 3127 int netType = msg.arg1; 3128 int sequence = msg.arg2; 3129 handleInetConditionHoldEnd(netType, sequence); 3130 break; 3131 } 3132 case EVENT_SET_NETWORK_PREFERENCE: { 3133 int preference = msg.arg1; 3134 handleSetNetworkPreference(preference); 3135 break; 3136 } 3137 case EVENT_SET_MOBILE_DATA: { 3138 boolean enabled = (msg.arg1 == ENABLED); 3139 handleSetMobileData(enabled); 3140 break; 3141 } 3142 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3143 handleDeprecatedGlobalHttpProxy(); 3144 break; 3145 } 3146 case EVENT_SET_DEPENDENCY_MET: { 3147 boolean met = (msg.arg1 == ENABLED); 3148 handleSetDependencyMet(msg.arg2, met); 3149 break; 3150 } 3151 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3152 Intent intent = (Intent)msg.obj; 3153 sendStickyBroadcast(intent); 3154 break; 3155 } 3156 case EVENT_SET_POLICY_DATA_ENABLE: { 3157 final int networkType = msg.arg1; 3158 final boolean enabled = msg.arg2 == ENABLED; 3159 handleSetPolicyDataEnable(networkType, enabled); 3160 break; 3161 } 3162 case EVENT_VPN_STATE_CHANGED: { 3163 if (mLockdownTracker != null) { 3164 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3165 } 3166 break; 3167 } 3168 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3169 int tag = mEnableFailFastMobileDataTag.get(); 3170 if (msg.arg1 == tag) { 3171 MobileDataStateTracker mobileDst = 3172 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3173 if (mobileDst != null) { 3174 mobileDst.setEnableFailFastMobileData(msg.arg2); 3175 } 3176 } else { 3177 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3178 + " != tag:" + tag); 3179 } 3180 break; 3181 } 3182 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3183 handleNetworkSamplingTimeout(); 3184 break; 3185 } 3186 case EVENT_PROXY_HAS_CHANGED: { 3187 handleApplyDefaultProxy((ProxyProperties)msg.obj); 3188 break; 3189 } 3190 } 3191 } 3192 } 3193 3194 // javadoc from interface 3195 public int tether(String iface) { 3196 enforceTetherChangePermission(); 3197 3198 if (isTetheringSupported()) { 3199 return mTethering.tether(iface); 3200 } else { 3201 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3202 } 3203 } 3204 3205 // javadoc from interface 3206 public int untether(String iface) { 3207 enforceTetherChangePermission(); 3208 3209 if (isTetheringSupported()) { 3210 return mTethering.untether(iface); 3211 } else { 3212 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3213 } 3214 } 3215 3216 // javadoc from interface 3217 public int getLastTetherError(String iface) { 3218 enforceTetherAccessPermission(); 3219 3220 if (isTetheringSupported()) { 3221 return mTethering.getLastTetherError(iface); 3222 } else { 3223 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3224 } 3225 } 3226 3227 // TODO - proper iface API for selection by property, inspection, etc 3228 public String[] getTetherableUsbRegexs() { 3229 enforceTetherAccessPermission(); 3230 if (isTetheringSupported()) { 3231 return mTethering.getTetherableUsbRegexs(); 3232 } else { 3233 return new String[0]; 3234 } 3235 } 3236 3237 public String[] getTetherableWifiRegexs() { 3238 enforceTetherAccessPermission(); 3239 if (isTetheringSupported()) { 3240 return mTethering.getTetherableWifiRegexs(); 3241 } else { 3242 return new String[0]; 3243 } 3244 } 3245 3246 public String[] getTetherableBluetoothRegexs() { 3247 enforceTetherAccessPermission(); 3248 if (isTetheringSupported()) { 3249 return mTethering.getTetherableBluetoothRegexs(); 3250 } else { 3251 return new String[0]; 3252 } 3253 } 3254 3255 public int setUsbTethering(boolean enable) { 3256 enforceTetherChangePermission(); 3257 if (isTetheringSupported()) { 3258 return mTethering.setUsbTethering(enable); 3259 } else { 3260 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3261 } 3262 } 3263 3264 // TODO - move iface listing, queries, etc to new module 3265 // javadoc from interface 3266 public String[] getTetherableIfaces() { 3267 enforceTetherAccessPermission(); 3268 return mTethering.getTetherableIfaces(); 3269 } 3270 3271 public String[] getTetheredIfaces() { 3272 enforceTetherAccessPermission(); 3273 return mTethering.getTetheredIfaces(); 3274 } 3275 3276 public String[] getTetheringErroredIfaces() { 3277 enforceTetherAccessPermission(); 3278 return mTethering.getErroredIfaces(); 3279 } 3280 3281 // if ro.tether.denied = true we default to no tethering 3282 // gservices could set the secure setting to 1 though to enable it on a build where it 3283 // had previously been turned off. 3284 public boolean isTetheringSupported() { 3285 enforceTetherAccessPermission(); 3286 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3287 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3288 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3289 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3290 mTethering.getTetherableWifiRegexs().length != 0 || 3291 mTethering.getTetherableBluetoothRegexs().length != 0) && 3292 mTethering.getUpstreamIfaceTypes().length != 0); 3293 } 3294 3295 // An API NetworkStateTrackers can call when they lose their network. 3296 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3297 // whichever happens first. The timer is started by the first caller and not 3298 // restarted by subsequent callers. 3299 public void requestNetworkTransitionWakelock(String forWhom) { 3300 enforceConnectivityInternalPermission(); 3301 synchronized (this) { 3302 if (mNetTransitionWakeLock.isHeld()) return; 3303 mNetTransitionWakeLockSerialNumber++; 3304 mNetTransitionWakeLock.acquire(); 3305 mNetTransitionWakeLockCausedBy = forWhom; 3306 } 3307 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3308 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3309 mNetTransitionWakeLockSerialNumber, 0), 3310 mNetTransitionWakeLockTimeout); 3311 return; 3312 } 3313 3314 // 100 percent is full good, 0 is full bad. 3315 public void reportInetCondition(int networkType, int percentage) { 3316 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3317 mContext.enforceCallingOrSelfPermission( 3318 android.Manifest.permission.STATUS_BAR, 3319 "ConnectivityService"); 3320 3321 if (DBG) { 3322 int pid = getCallingPid(); 3323 int uid = getCallingUid(); 3324 String s = pid + "(" + uid + ") reports inet is " + 3325 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3326 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3327 mInetLog.add(s); 3328 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3329 mInetLog.remove(0); 3330 } 3331 } 3332 mHandler.sendMessage(mHandler.obtainMessage( 3333 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3334 } 3335 3336 private void handleInetConditionChange(int netType, int condition) { 3337 if (mActiveDefaultNetwork == -1) { 3338 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3339 return; 3340 } 3341 if (mActiveDefaultNetwork != netType) { 3342 if (DBG) log("handleInetConditionChange: net=" + netType + 3343 " != default=" + mActiveDefaultNetwork + " - ignore"); 3344 return; 3345 } 3346 if (VDBG) { 3347 log("handleInetConditionChange: net=" + 3348 netType + ", condition=" + condition + 3349 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3350 } 3351 mDefaultInetCondition = condition; 3352 int delay; 3353 if (mInetConditionChangeInFlight == false) { 3354 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3355 // setup a new hold to debounce this 3356 if (mDefaultInetCondition > 50) { 3357 delay = Settings.Global.getInt(mContext.getContentResolver(), 3358 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3359 } else { 3360 delay = Settings.Global.getInt(mContext.getContentResolver(), 3361 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3362 } 3363 mInetConditionChangeInFlight = true; 3364 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3365 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3366 } else { 3367 // we've set the new condition, when this hold ends that will get picked up 3368 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3369 } 3370 } 3371 3372 private void handleInetConditionHoldEnd(int netType, int sequence) { 3373 if (DBG) { 3374 log("handleInetConditionHoldEnd: net=" + netType + 3375 ", condition=" + mDefaultInetCondition + 3376 ", published condition=" + mDefaultInetConditionPublished); 3377 } 3378 mInetConditionChangeInFlight = false; 3379 3380 if (mActiveDefaultNetwork == -1) { 3381 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3382 return; 3383 } 3384 if (mDefaultConnectionSequence != sequence) { 3385 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3386 return; 3387 } 3388 // TODO: Figure out why this optimization sometimes causes a 3389 // change in mDefaultInetCondition to be missed and the 3390 // UI to not be updated. 3391 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3392 // if (DBG) log("no change in condition - aborting"); 3393 // return; 3394 //} 3395 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3396 if (networkInfo.isConnected() == false) { 3397 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3398 return; 3399 } 3400 mDefaultInetConditionPublished = mDefaultInetCondition; 3401 sendInetConditionBroadcast(networkInfo); 3402 return; 3403 } 3404 3405 public ProxyProperties getProxy() { 3406 // this information is already available as a world read/writable jvm property 3407 // so this API change wouldn't have a benifit. It also breaks the passing 3408 // of proxy info to all the JVMs. 3409 // enforceAccessPermission(); 3410 synchronized (mProxyLock) { 3411 ProxyProperties ret = mGlobalProxy; 3412 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3413 return ret; 3414 } 3415 } 3416 3417 public void setGlobalProxy(ProxyProperties proxyProperties) { 3418 enforceConnectivityInternalPermission(); 3419 3420 synchronized (mProxyLock) { 3421 if (proxyProperties == mGlobalProxy) return; 3422 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3423 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3424 3425 String host = ""; 3426 int port = 0; 3427 String exclList = ""; 3428 String pacFileUrl = ""; 3429 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3430 !TextUtils.isEmpty(proxyProperties.getPacFileUrl()))) { 3431 if (!proxyProperties.isValid()) { 3432 if (DBG) 3433 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3434 return; 3435 } 3436 mGlobalProxy = new ProxyProperties(proxyProperties); 3437 host = mGlobalProxy.getHost(); 3438 port = mGlobalProxy.getPort(); 3439 exclList = mGlobalProxy.getExclusionList(); 3440 if (proxyProperties.getPacFileUrl() != null) { 3441 pacFileUrl = proxyProperties.getPacFileUrl(); 3442 } 3443 } else { 3444 mGlobalProxy = null; 3445 } 3446 ContentResolver res = mContext.getContentResolver(); 3447 final long token = Binder.clearCallingIdentity(); 3448 try { 3449 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3450 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3451 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3452 exclList); 3453 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3454 } finally { 3455 Binder.restoreCallingIdentity(token); 3456 } 3457 } 3458 3459 if (mGlobalProxy == null) { 3460 proxyProperties = mDefaultProxy; 3461 } 3462 sendProxyBroadcast(proxyProperties); 3463 } 3464 3465 private void loadGlobalProxy() { 3466 ContentResolver res = mContext.getContentResolver(); 3467 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3468 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3469 String exclList = Settings.Global.getString(res, 3470 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3471 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3472 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3473 ProxyProperties proxyProperties; 3474 if (!TextUtils.isEmpty(pacFileUrl)) { 3475 proxyProperties = new ProxyProperties(pacFileUrl); 3476 } else { 3477 proxyProperties = new ProxyProperties(host, port, exclList); 3478 } 3479 if (!proxyProperties.isValid()) { 3480 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3481 return; 3482 } 3483 3484 synchronized (mProxyLock) { 3485 mGlobalProxy = proxyProperties; 3486 } 3487 } 3488 } 3489 3490 public ProxyProperties getGlobalProxy() { 3491 // this information is already available as a world read/writable jvm property 3492 // so this API change wouldn't have a benifit. It also breaks the passing 3493 // of proxy info to all the JVMs. 3494 // enforceAccessPermission(); 3495 synchronized (mProxyLock) { 3496 return mGlobalProxy; 3497 } 3498 } 3499 3500 private void handleApplyDefaultProxy(ProxyProperties proxy) { 3501 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3502 && TextUtils.isEmpty(proxy.getPacFileUrl())) { 3503 proxy = null; 3504 } 3505 synchronized (mProxyLock) { 3506 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3507 if (mDefaultProxy == proxy) return; // catches repeated nulls 3508 if (proxy != null && !proxy.isValid()) { 3509 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3510 return; 3511 } 3512 mDefaultProxy = proxy; 3513 3514 if (mGlobalProxy != null) return; 3515 if (!mDefaultProxyDisabled) { 3516 sendProxyBroadcast(proxy); 3517 } 3518 } 3519 } 3520 3521 private void handleDeprecatedGlobalHttpProxy() { 3522 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3523 Settings.Global.HTTP_PROXY); 3524 if (!TextUtils.isEmpty(proxy)) { 3525 String data[] = proxy.split(":"); 3526 if (data.length == 0) { 3527 return; 3528 } 3529 3530 String proxyHost = data[0]; 3531 int proxyPort = 8080; 3532 if (data.length > 1) { 3533 try { 3534 proxyPort = Integer.parseInt(data[1]); 3535 } catch (NumberFormatException e) { 3536 return; 3537 } 3538 } 3539 ProxyProperties p = new ProxyProperties(data[0], proxyPort, ""); 3540 setGlobalProxy(p); 3541 } 3542 } 3543 3544 private void sendProxyBroadcast(ProxyProperties proxy) { 3545 if (proxy == null) proxy = new ProxyProperties("", 0, ""); 3546 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3547 if (DBG) log("sending Proxy Broadcast for " + proxy); 3548 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3549 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3550 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3551 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3552 final long ident = Binder.clearCallingIdentity(); 3553 try { 3554 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3555 } finally { 3556 Binder.restoreCallingIdentity(ident); 3557 } 3558 } 3559 3560 private static class SettingsObserver extends ContentObserver { 3561 private int mWhat; 3562 private Handler mHandler; 3563 SettingsObserver(Handler handler, int what) { 3564 super(handler); 3565 mHandler = handler; 3566 mWhat = what; 3567 } 3568 3569 void observe(Context context) { 3570 ContentResolver resolver = context.getContentResolver(); 3571 resolver.registerContentObserver(Settings.Global.getUriFor( 3572 Settings.Global.HTTP_PROXY), false, this); 3573 } 3574 3575 @Override 3576 public void onChange(boolean selfChange) { 3577 mHandler.obtainMessage(mWhat).sendToTarget(); 3578 } 3579 } 3580 3581 private static void log(String s) { 3582 Slog.d(TAG, s); 3583 } 3584 3585 private static void loge(String s) { 3586 Slog.e(TAG, s); 3587 } 3588 3589 int convertFeatureToNetworkType(int networkType, String feature) { 3590 int usedNetworkType = networkType; 3591 3592 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3593 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3594 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3595 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3596 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3597 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3598 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3599 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3600 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3601 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3602 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3603 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3604 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3605 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3606 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3607 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3608 } else { 3609 Slog.e(TAG, "Can't match any mobile netTracker!"); 3610 } 3611 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3612 if (TextUtils.equals(feature, "p2p")) { 3613 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3614 } else { 3615 Slog.e(TAG, "Can't match any wifi netTracker!"); 3616 } 3617 } else { 3618 Slog.e(TAG, "Unexpected network type"); 3619 } 3620 return usedNetworkType; 3621 } 3622 3623 private static <T> T checkNotNull(T value, String message) { 3624 if (value == null) { 3625 throw new NullPointerException(message); 3626 } 3627 return value; 3628 } 3629 3630 /** 3631 * Protect a socket from VPN routing rules. This method is used by 3632 * VpnBuilder and not available in ConnectivityManager. Permissions 3633 * are checked in Vpn class. 3634 * @hide 3635 */ 3636 @Override 3637 public boolean protectVpn(ParcelFileDescriptor socket) { 3638 throwIfLockdownEnabled(); 3639 try { 3640 int type = mActiveDefaultNetwork; 3641 int user = UserHandle.getUserId(Binder.getCallingUid()); 3642 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3643 synchronized(mVpns) { 3644 mVpns.get(user).protect(socket); 3645 } 3646 return true; 3647 } 3648 } catch (Exception e) { 3649 // ignore 3650 } finally { 3651 try { 3652 socket.close(); 3653 } catch (Exception e) { 3654 // ignore 3655 } 3656 } 3657 return false; 3658 } 3659 3660 /** 3661 * Prepare for a VPN application. This method is used by VpnDialogs 3662 * and not available in ConnectivityManager. Permissions are checked 3663 * in Vpn class. 3664 * @hide 3665 */ 3666 @Override 3667 public boolean prepareVpn(String oldPackage, String newPackage) { 3668 throwIfLockdownEnabled(); 3669 int user = UserHandle.getUserId(Binder.getCallingUid()); 3670 synchronized(mVpns) { 3671 return mVpns.get(user).prepare(oldPackage, newPackage); 3672 } 3673 } 3674 3675 @Override 3676 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3677 enforceMarkNetworkSocketPermission(); 3678 final long token = Binder.clearCallingIdentity(); 3679 try { 3680 int mark = mNetd.getMarkForUid(uid); 3681 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3682 if (mark == -1) { 3683 mark = 0; 3684 } 3685 NetworkUtils.markSocket(socket.getFd(), mark); 3686 } catch (RemoteException e) { 3687 } finally { 3688 Binder.restoreCallingIdentity(token); 3689 } 3690 } 3691 3692 /** 3693 * Configure a TUN interface and return its file descriptor. Parameters 3694 * are encoded and opaque to this class. This method is used by VpnBuilder 3695 * and not available in ConnectivityManager. Permissions are checked in 3696 * Vpn class. 3697 * @hide 3698 */ 3699 @Override 3700 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3701 throwIfLockdownEnabled(); 3702 int user = UserHandle.getUserId(Binder.getCallingUid()); 3703 synchronized(mVpns) { 3704 return mVpns.get(user).establish(config); 3705 } 3706 } 3707 3708 /** 3709 * Start legacy VPN, controlling native daemons as needed. Creates a 3710 * secondary thread to perform connection work, returning quickly. 3711 */ 3712 @Override 3713 public void startLegacyVpn(VpnProfile profile) { 3714 throwIfLockdownEnabled(); 3715 final LinkProperties egress = getActiveLinkProperties(); 3716 if (egress == null) { 3717 throw new IllegalStateException("Missing active network connection"); 3718 } 3719 int user = UserHandle.getUserId(Binder.getCallingUid()); 3720 synchronized(mVpns) { 3721 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3722 } 3723 } 3724 3725 /** 3726 * Return the information of the ongoing legacy VPN. This method is used 3727 * by VpnSettings and not available in ConnectivityManager. Permissions 3728 * are checked in Vpn class. 3729 * @hide 3730 */ 3731 @Override 3732 public LegacyVpnInfo getLegacyVpnInfo() { 3733 throwIfLockdownEnabled(); 3734 int user = UserHandle.getUserId(Binder.getCallingUid()); 3735 synchronized(mVpns) { 3736 return mVpns.get(user).getLegacyVpnInfo(); 3737 } 3738 } 3739 3740 /** 3741 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3742 * not available in ConnectivityManager. 3743 * Permissions are checked in Vpn class. 3744 * @hide 3745 */ 3746 @Override 3747 public VpnConfig getVpnConfig() { 3748 int user = UserHandle.getUserId(Binder.getCallingUid()); 3749 synchronized(mVpns) { 3750 return mVpns.get(user).getVpnConfig(); 3751 } 3752 } 3753 3754 /** 3755 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3756 * through NetworkStateTracker since it works differently. For example, it 3757 * needs to override DNS servers but never takes the default routes. It 3758 * relies on another data network, and it could keep existing connections 3759 * alive after reconnecting, switching between networks, or even resuming 3760 * from deep sleep. Calls from applications should be done synchronously 3761 * to avoid race conditions. As these are all hidden APIs, refactoring can 3762 * be done whenever a better abstraction is developed. 3763 */ 3764 public class VpnCallback { 3765 private VpnCallback() { 3766 } 3767 3768 public void onStateChanged(NetworkInfo info) { 3769 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3770 } 3771 3772 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3773 if (dnsServers == null) { 3774 restore(); 3775 return; 3776 } 3777 3778 // Convert DNS servers into addresses. 3779 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3780 for (String address : dnsServers) { 3781 // Double check the addresses and remove invalid ones. 3782 try { 3783 addresses.add(InetAddress.parseNumericAddress(address)); 3784 } catch (Exception e) { 3785 // ignore 3786 } 3787 } 3788 if (addresses.isEmpty()) { 3789 restore(); 3790 return; 3791 } 3792 3793 // Concatenate search domains into a string. 3794 StringBuilder buffer = new StringBuilder(); 3795 if (searchDomains != null) { 3796 for (String domain : searchDomains) { 3797 buffer.append(domain).append(' '); 3798 } 3799 } 3800 String domains = buffer.toString().trim(); 3801 3802 // Apply DNS changes. 3803 synchronized (mDnsLock) { 3804 updateDnsLocked("VPN", iface, addresses, domains, false); 3805 } 3806 3807 // Temporarily disable the default proxy (not global). 3808 synchronized (mProxyLock) { 3809 mDefaultProxyDisabled = true; 3810 if (mGlobalProxy == null && mDefaultProxy != null) { 3811 sendProxyBroadcast(null); 3812 } 3813 } 3814 3815 // TODO: support proxy per network. 3816 } 3817 3818 public void restore() { 3819 synchronized (mProxyLock) { 3820 mDefaultProxyDisabled = false; 3821 if (mGlobalProxy == null && mDefaultProxy != null) { 3822 sendProxyBroadcast(mDefaultProxy); 3823 } 3824 } 3825 } 3826 3827 public void protect(ParcelFileDescriptor socket) { 3828 try { 3829 final int mark = mNetd.getMarkForProtect(); 3830 NetworkUtils.markSocket(socket.getFd(), mark); 3831 } catch (RemoteException e) { 3832 } 3833 } 3834 3835 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3836 for (RouteInfo route : routes) { 3837 try { 3838 mNetd.setMarkedForwardingRoute(interfaze, route); 3839 } catch (RemoteException e) { 3840 } 3841 } 3842 } 3843 3844 public void setMarkedForwarding(String interfaze) { 3845 try { 3846 mNetd.setMarkedForwarding(interfaze); 3847 } catch (RemoteException e) { 3848 } 3849 } 3850 3851 public void clearMarkedForwarding(String interfaze) { 3852 try { 3853 mNetd.clearMarkedForwarding(interfaze); 3854 } catch (RemoteException e) { 3855 } 3856 } 3857 3858 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3859 int uidStart = uid * UserHandle.PER_USER_RANGE; 3860 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3861 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3862 } 3863 3864 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3865 int uidStart = uid * UserHandle.PER_USER_RANGE; 3866 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3867 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3868 } 3869 3870 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3871 boolean forwardDns) { 3872 try { 3873 mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd); 3874 if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3875 } catch (RemoteException e) { 3876 } 3877 3878 } 3879 3880 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3881 boolean forwardDns) { 3882 try { 3883 mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3884 if (forwardDns) mNetd.clearDnsInterfaceForUidRange(uidStart, uidEnd); 3885 } catch (RemoteException e) { 3886 } 3887 3888 } 3889 } 3890 3891 @Override 3892 public boolean updateLockdownVpn() { 3893 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3894 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3895 return false; 3896 } 3897 3898 // Tear down existing lockdown if profile was removed 3899 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3900 if (mLockdownEnabled) { 3901 if (!mKeyStore.isUnlocked()) { 3902 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3903 return false; 3904 } 3905 3906 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3907 final VpnProfile profile = VpnProfile.decode( 3908 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3909 int user = UserHandle.getUserId(Binder.getCallingUid()); 3910 synchronized(mVpns) { 3911 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3912 profile)); 3913 } 3914 } else { 3915 setLockdownTracker(null); 3916 } 3917 3918 return true; 3919 } 3920 3921 /** 3922 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3923 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3924 */ 3925 private void setLockdownTracker(LockdownVpnTracker tracker) { 3926 // Shutdown any existing tracker 3927 final LockdownVpnTracker existing = mLockdownTracker; 3928 mLockdownTracker = null; 3929 if (existing != null) { 3930 existing.shutdown(); 3931 } 3932 3933 try { 3934 if (tracker != null) { 3935 mNetd.setFirewallEnabled(true); 3936 mNetd.setFirewallInterfaceRule("lo", true); 3937 mLockdownTracker = tracker; 3938 mLockdownTracker.init(); 3939 } else { 3940 mNetd.setFirewallEnabled(false); 3941 } 3942 } catch (RemoteException e) { 3943 // ignored; NMS lives inside system_server 3944 } 3945 } 3946 3947 private void throwIfLockdownEnabled() { 3948 if (mLockdownEnabled) { 3949 throw new IllegalStateException("Unavailable in lockdown mode"); 3950 } 3951 } 3952 3953 public void supplyMessenger(int networkType, Messenger messenger) { 3954 enforceConnectivityInternalPermission(); 3955 3956 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3957 mNetTrackers[networkType].supplyMessenger(messenger); 3958 } 3959 } 3960 3961 public int findConnectionTypeForIface(String iface) { 3962 enforceConnectivityInternalPermission(); 3963 3964 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3965 for (NetworkStateTracker tracker : mNetTrackers) { 3966 if (tracker != null) { 3967 LinkProperties lp = tracker.getLinkProperties(); 3968 if (lp != null && iface.equals(lp.getInterfaceName())) { 3969 return tracker.getNetworkInfo().getType(); 3970 } 3971 } 3972 } 3973 return ConnectivityManager.TYPE_NONE; 3974 } 3975 3976 /** 3977 * Have mobile data fail fast if enabled. 3978 * 3979 * @param enabled DctConstants.ENABLED/DISABLED 3980 */ 3981 private void setEnableFailFastMobileData(int enabled) { 3982 int tag; 3983 3984 if (enabled == DctConstants.ENABLED) { 3985 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3986 } else { 3987 tag = mEnableFailFastMobileDataTag.get(); 3988 } 3989 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3990 enabled)); 3991 } 3992 3993 private boolean isMobileDataStateTrackerReady() { 3994 MobileDataStateTracker mdst = 3995 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3996 return (mdst != null) && (mdst.isReady()); 3997 } 3998 3999 /** 4000 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4001 */ 4002 4003 /** 4004 * No connection was possible to the network. 4005 * This is NOT a warm sim. 4006 */ 4007 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4008 4009 /** 4010 * A connection was made to the internet, all is well. 4011 * This is NOT a warm sim. 4012 */ 4013 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4014 4015 /** 4016 * A connection was made but no dns server was available to resolve a name to address. 4017 * This is NOT a warm sim since provisioning network is supported. 4018 */ 4019 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4020 4021 /** 4022 * A connection was made but could not open a TCP connection. 4023 * This is NOT a warm sim since provisioning network is supported. 4024 */ 4025 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4026 4027 /** 4028 * A connection was made but there was a redirection, we appear to be in walled garden. 4029 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4030 */ 4031 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4032 4033 /** 4034 * The mobile network is a provisioning network. 4035 * This is an indication of a warm sim on a mobile network such as AT&T. 4036 */ 4037 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4038 4039 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4040 4041 @Override 4042 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4043 int timeOutMs = -1; 4044 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4045 enforceConnectivityInternalPermission(); 4046 4047 final long token = Binder.clearCallingIdentity(); 4048 try { 4049 timeOutMs = suggestedTimeOutMs; 4050 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4051 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4052 } 4053 4054 // Check that mobile networks are supported 4055 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4056 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4057 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4058 return timeOutMs; 4059 } 4060 4061 // If we're already checking don't do it again 4062 // TODO: Add a queue of results... 4063 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4064 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4065 return timeOutMs; 4066 } 4067 4068 // Start off with mobile notification off 4069 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4070 4071 CheckMp checkMp = new CheckMp(mContext, this); 4072 CheckMp.CallBack cb = new CheckMp.CallBack() { 4073 @Override 4074 void onComplete(Integer result) { 4075 if (DBG) log("CheckMp.onComplete: result=" + result); 4076 NetworkInfo ni = 4077 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4078 switch(result) { 4079 case CMP_RESULT_CODE_CONNECTABLE: 4080 case CMP_RESULT_CODE_NO_CONNECTION: 4081 case CMP_RESULT_CODE_NO_DNS: 4082 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4083 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4084 break; 4085 } 4086 case CMP_RESULT_CODE_REDIRECTED: { 4087 if (DBG) log("CheckMp.onComplete: warm sim"); 4088 String url = getMobileProvisioningUrl(); 4089 if (TextUtils.isEmpty(url)) { 4090 url = getMobileRedirectedProvisioningUrl(); 4091 } 4092 if (TextUtils.isEmpty(url) == false) { 4093 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4094 setProvNotificationVisible(true, 4095 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4096 url); 4097 } else { 4098 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4099 } 4100 break; 4101 } 4102 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4103 String url = getMobileProvisioningUrl(); 4104 if (TextUtils.isEmpty(url) == false) { 4105 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4106 setProvNotificationVisible(true, 4107 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4108 url); 4109 } else { 4110 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4111 } 4112 break; 4113 } 4114 default: { 4115 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4116 break; 4117 } 4118 } 4119 mIsCheckingMobileProvisioning.set(false); 4120 } 4121 }; 4122 CheckMp.Params params = 4123 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4124 if (DBG) log("checkMobileProvisioning: params=" + params); 4125 checkMp.execute(params); 4126 } finally { 4127 Binder.restoreCallingIdentity(token); 4128 if (DBG) log("checkMobileProvisioning: X"); 4129 } 4130 return timeOutMs; 4131 } 4132 4133 static class CheckMp extends 4134 AsyncTask<CheckMp.Params, Void, Integer> { 4135 private static final String CHECKMP_TAG = "CheckMp"; 4136 4137 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4138 private static boolean mTestingFailures; 4139 4140 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4141 private static final int MAX_LOOPS = 4; 4142 4143 // Number of milli-seconds to complete all of the retires 4144 public static final int MAX_TIMEOUT_MS = 60000; 4145 4146 // The socket should retry only 5 seconds, the default is longer 4147 private static final int SOCKET_TIMEOUT_MS = 5000; 4148 4149 // Sleep time for network errors 4150 private static final int NET_ERROR_SLEEP_SEC = 3; 4151 4152 // Sleep time for network route establishment 4153 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4154 4155 // Short sleep time for polling :( 4156 private static final int POLLING_SLEEP_SEC = 1; 4157 4158 private Context mContext; 4159 private ConnectivityService mCs; 4160 private TelephonyManager mTm; 4161 private Params mParams; 4162 4163 /** 4164 * Parameters for AsyncTask.execute 4165 */ 4166 static class Params { 4167 private String mUrl; 4168 private long mTimeOutMs; 4169 private CallBack mCb; 4170 4171 Params(String url, long timeOutMs, CallBack cb) { 4172 mUrl = url; 4173 mTimeOutMs = timeOutMs; 4174 mCb = cb; 4175 } 4176 4177 @Override 4178 public String toString() { 4179 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4180 } 4181 } 4182 4183 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4184 // issued by name or ip address, for Google its by name so when we construct 4185 // this HostnameVerifier we'll pass the original Uri and use it to verify 4186 // the host. If the host name in the original uril fails we'll test the 4187 // hostname parameter just incase things change. 4188 static class CheckMpHostnameVerifier implements HostnameVerifier { 4189 Uri mOrgUri; 4190 4191 CheckMpHostnameVerifier(Uri orgUri) { 4192 mOrgUri = orgUri; 4193 } 4194 4195 @Override 4196 public boolean verify(String hostname, SSLSession session) { 4197 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4198 String orgUriHost = mOrgUri.getHost(); 4199 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4200 if (DBG) { 4201 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4202 + " orgUriHost=" + orgUriHost); 4203 } 4204 return retVal; 4205 } 4206 } 4207 4208 /** 4209 * The call back object passed in Params. onComplete will be called 4210 * on the main thread. 4211 */ 4212 abstract static class CallBack { 4213 // Called on the main thread. 4214 abstract void onComplete(Integer result); 4215 } 4216 4217 public CheckMp(Context context, ConnectivityService cs) { 4218 if (Build.IS_DEBUGGABLE) { 4219 mTestingFailures = 4220 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4221 } else { 4222 mTestingFailures = false; 4223 } 4224 4225 mContext = context; 4226 mCs = cs; 4227 4228 // Setup access to TelephonyService we'll be using. 4229 mTm = (TelephonyManager) mContext.getSystemService( 4230 Context.TELEPHONY_SERVICE); 4231 } 4232 4233 /** 4234 * Get the default url to use for the test. 4235 */ 4236 public String getDefaultUrl() { 4237 // See http://go/clientsdns for usage approval 4238 String server = Settings.Global.getString(mContext.getContentResolver(), 4239 Settings.Global.CAPTIVE_PORTAL_SERVER); 4240 if (server == null) { 4241 server = "clients3.google.com"; 4242 } 4243 return "http://" + server + "/generate_204"; 4244 } 4245 4246 /** 4247 * Detect if its possible to connect to the http url. DNS based detection techniques 4248 * do not work at all hotspots. The best way to check is to perform a request to 4249 * a known address that fetches the data we expect. 4250 */ 4251 private synchronized Integer isMobileOk(Params params) { 4252 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4253 Uri orgUri = Uri.parse(params.mUrl); 4254 Random rand = new Random(); 4255 mParams = params; 4256 4257 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4258 result = CMP_RESULT_CODE_NO_CONNECTION; 4259 log("isMobileOk: X not mobile capable result=" + result); 4260 return result; 4261 } 4262 4263 // See if we've already determined we've got a provisioning connection, 4264 // if so we don't need to do anything active. 4265 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4266 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4267 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4268 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4269 4270 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4271 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4272 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4273 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4274 4275 if (isDefaultProvisioning || isHipriProvisioning) { 4276 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4277 log("isMobileOk: X default || hipri is provisioning result=" + result); 4278 return result; 4279 } 4280 4281 try { 4282 // Continue trying to connect until time has run out 4283 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4284 4285 if (!mCs.isMobileDataStateTrackerReady()) { 4286 // Wait for MobileDataStateTracker to be ready. 4287 if (DBG) log("isMobileOk: mdst is not ready"); 4288 while(SystemClock.elapsedRealtime() < endTime) { 4289 if (mCs.isMobileDataStateTrackerReady()) { 4290 // Enable fail fast as we'll do retries here and use a 4291 // hipri connection so the default connection stays active. 4292 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4293 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4294 break; 4295 } 4296 sleep(POLLING_SLEEP_SEC); 4297 } 4298 } 4299 4300 log("isMobileOk: start hipri url=" + params.mUrl); 4301 4302 // First wait until we can start using hipri 4303 Binder binder = new Binder(); 4304 while(SystemClock.elapsedRealtime() < endTime) { 4305 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4306 Phone.FEATURE_ENABLE_HIPRI, binder); 4307 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4308 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4309 log("isMobileOk: hipri started"); 4310 break; 4311 } 4312 if (VDBG) log("isMobileOk: hipri not started yet"); 4313 result = CMP_RESULT_CODE_NO_CONNECTION; 4314 sleep(POLLING_SLEEP_SEC); 4315 } 4316 4317 // Continue trying to connect until time has run out 4318 while(SystemClock.elapsedRealtime() < endTime) { 4319 try { 4320 // Wait for hipri to connect. 4321 // TODO: Don't poll and handle situation where hipri fails 4322 // because default is retrying. See b/9569540 4323 NetworkInfo.State state = mCs 4324 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4325 if (state != NetworkInfo.State.CONNECTED) { 4326 if (true/*VDBG*/) { 4327 log("isMobileOk: not connected ni=" + 4328 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4329 } 4330 sleep(POLLING_SLEEP_SEC); 4331 result = CMP_RESULT_CODE_NO_CONNECTION; 4332 continue; 4333 } 4334 4335 // Hipri has started check if this is a provisioning url 4336 MobileDataStateTracker mdst = (MobileDataStateTracker) 4337 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4338 if (mdst.isProvisioningNetwork()) { 4339 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4340 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4341 return result; 4342 } else { 4343 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4344 } 4345 4346 // Get of the addresses associated with the url host. We need to use the 4347 // address otherwise HttpURLConnection object will use the name to get 4348 // the addresses and will try every address but that will bypass the 4349 // route to host we setup and the connection could succeed as the default 4350 // interface might be connected to the internet via wifi or other interface. 4351 InetAddress[] addresses; 4352 try { 4353 addresses = InetAddress.getAllByName(orgUri.getHost()); 4354 } catch (UnknownHostException e) { 4355 result = CMP_RESULT_CODE_NO_DNS; 4356 log("isMobileOk: X UnknownHostException result=" + result); 4357 return result; 4358 } 4359 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4360 4361 // Get the type of addresses supported by this link 4362 LinkProperties lp = mCs.getLinkProperties( 4363 ConnectivityManager.TYPE_MOBILE_HIPRI); 4364 boolean linkHasIpv4 = lp.hasIPv4Address(); 4365 boolean linkHasIpv6 = lp.hasIPv6Address(); 4366 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4367 + " linkHasIpv6=" + linkHasIpv6); 4368 4369 final ArrayList<InetAddress> validAddresses = 4370 new ArrayList<InetAddress>(addresses.length); 4371 4372 for (InetAddress addr : addresses) { 4373 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4374 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4375 validAddresses.add(addr); 4376 } 4377 } 4378 4379 if (validAddresses.size() == 0) { 4380 return CMP_RESULT_CODE_NO_CONNECTION; 4381 } 4382 4383 int addrTried = 0; 4384 while (true) { 4385 // Loop through at most MAX_LOOPS valid addresses or until 4386 // we run out of time 4387 if (addrTried++ >= MAX_LOOPS) { 4388 log("isMobileOk: too many loops tried - giving up"); 4389 break; 4390 } 4391 if (SystemClock.elapsedRealtime() >= endTime) { 4392 log("isMobileOk: spend too much time - giving up"); 4393 break; 4394 } 4395 4396 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4397 validAddresses.size())); 4398 4399 // Make a route to host so we check the specific interface. 4400 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4401 hostAddr.getAddress(), null)) { 4402 // Wait a short time to be sure the route is established ?? 4403 log("isMobileOk:" 4404 + " wait to establish route to hostAddr=" + hostAddr); 4405 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4406 } else { 4407 log("isMobileOk:" 4408 + " could not establish route to hostAddr=" + hostAddr); 4409 // Wait a short time before the next attempt 4410 sleep(NET_ERROR_SLEEP_SEC); 4411 continue; 4412 } 4413 4414 // Rewrite the url to have numeric address to use the specific route 4415 // using http for half the attempts and https for the other half. 4416 // Doing https first and http second as on a redirected walled garden 4417 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4418 // handshake timed out" which we declare as 4419 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4420 // having http second we will be using logic used for some time. 4421 URL newUrl; 4422 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4423 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4424 orgUri.getPath()); 4425 log("isMobileOk: newUrl=" + newUrl); 4426 4427 HttpURLConnection urlConn = null; 4428 try { 4429 // Open the connection set the request headers and get the response 4430 urlConn = (HttpURLConnection)newUrl.openConnection( 4431 java.net.Proxy.NO_PROXY); 4432 if (scheme.equals("https")) { 4433 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4434 new CheckMpHostnameVerifier(orgUri)); 4435 } 4436 urlConn.setInstanceFollowRedirects(false); 4437 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4438 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4439 urlConn.setUseCaches(false); 4440 urlConn.setAllowUserInteraction(false); 4441 // Set the "Connection" to "Close" as by default "Keep-Alive" 4442 // is used which is useless in this case. 4443 urlConn.setRequestProperty("Connection", "close"); 4444 int responseCode = urlConn.getResponseCode(); 4445 4446 // For debug display the headers 4447 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4448 log("isMobileOk: headers=" + headers); 4449 4450 // Close the connection 4451 urlConn.disconnect(); 4452 urlConn = null; 4453 4454 if (mTestingFailures) { 4455 // Pretend no connection, this tests using http and https 4456 result = CMP_RESULT_CODE_NO_CONNECTION; 4457 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4458 continue; 4459 } 4460 4461 if (responseCode == 204) { 4462 // Return 4463 result = CMP_RESULT_CODE_CONNECTABLE; 4464 log("isMobileOk: X got expected responseCode=" + responseCode 4465 + " result=" + result); 4466 return result; 4467 } else { 4468 // Retry to be sure this was redirected, we've gotten 4469 // occasions where a server returned 200 even though 4470 // the device didn't have a "warm" sim. 4471 log("isMobileOk: not expected responseCode=" + responseCode); 4472 // TODO - it would be nice in the single-address case to do 4473 // another DNS resolve here, but flushing the cache is a bit 4474 // heavy-handed. 4475 result = CMP_RESULT_CODE_REDIRECTED; 4476 } 4477 } catch (Exception e) { 4478 log("isMobileOk: HttpURLConnection Exception" + e); 4479 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4480 if (urlConn != null) { 4481 urlConn.disconnect(); 4482 urlConn = null; 4483 } 4484 sleep(NET_ERROR_SLEEP_SEC); 4485 continue; 4486 } 4487 } 4488 log("isMobileOk: X loops|timed out result=" + result); 4489 return result; 4490 } catch (Exception e) { 4491 log("isMobileOk: Exception e=" + e); 4492 continue; 4493 } 4494 } 4495 log("isMobileOk: timed out"); 4496 } finally { 4497 log("isMobileOk: F stop hipri"); 4498 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4499 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4500 Phone.FEATURE_ENABLE_HIPRI); 4501 4502 // Wait for hipri to disconnect. 4503 long endTime = SystemClock.elapsedRealtime() + 5000; 4504 4505 while(SystemClock.elapsedRealtime() < endTime) { 4506 NetworkInfo.State state = mCs 4507 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4508 if (state != NetworkInfo.State.DISCONNECTED) { 4509 if (VDBG) { 4510 log("isMobileOk: connected ni=" + 4511 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4512 } 4513 sleep(POLLING_SLEEP_SEC); 4514 continue; 4515 } 4516 } 4517 4518 log("isMobileOk: X result=" + result); 4519 } 4520 return result; 4521 } 4522 4523 @Override 4524 protected Integer doInBackground(Params... params) { 4525 return isMobileOk(params[0]); 4526 } 4527 4528 @Override 4529 protected void onPostExecute(Integer result) { 4530 log("onPostExecute: result=" + result); 4531 if ((mParams != null) && (mParams.mCb != null)) { 4532 mParams.mCb.onComplete(result); 4533 } 4534 } 4535 4536 private String inetAddressesToString(InetAddress[] addresses) { 4537 StringBuffer sb = new StringBuffer(); 4538 boolean firstTime = true; 4539 for(InetAddress addr : addresses) { 4540 if (firstTime) { 4541 firstTime = false; 4542 } else { 4543 sb.append(","); 4544 } 4545 sb.append(addr); 4546 } 4547 return sb.toString(); 4548 } 4549 4550 private void printNetworkInfo() { 4551 boolean hasIccCard = mTm.hasIccCard(); 4552 int simState = mTm.getSimState(); 4553 log("hasIccCard=" + hasIccCard 4554 + " simState=" + simState); 4555 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4556 if (ni != null) { 4557 log("ni.length=" + ni.length); 4558 for (NetworkInfo netInfo: ni) { 4559 log("netInfo=" + netInfo.toString()); 4560 } 4561 } else { 4562 log("no network info ni=null"); 4563 } 4564 } 4565 4566 /** 4567 * Sleep for a few seconds then return. 4568 * @param seconds 4569 */ 4570 private static void sleep(int seconds) { 4571 long stopTime = System.nanoTime() + (seconds * 1000000000); 4572 long sleepTime; 4573 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4574 try { 4575 Thread.sleep(sleepTime / 1000000); 4576 } catch (InterruptedException ignored) { 4577 } 4578 } 4579 } 4580 4581 private static void log(String s) { 4582 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4583 } 4584 } 4585 4586 // TODO: Move to ConnectivityManager and make public? 4587 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4588 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4589 4590 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4591 @Override 4592 public void onReceive(Context context, Intent intent) { 4593 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4594 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4595 } 4596 } 4597 }; 4598 4599 private void handleMobileProvisioningAction(String url) { 4600 // Notication mark notification as not visible 4601 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4602 4603 // If provisioning network handle as a special case, 4604 // otherwise launch browser with the intent directly. 4605 NetworkInfo ni = getProvisioningNetworkInfo(); 4606 if ((ni != null) && ni.isConnectedToProvisioningNetwork()) { 4607 if (DBG) log("handleMobileProvisioningAction: on provisioning network"); 4608 MobileDataStateTracker mdst = (MobileDataStateTracker) 4609 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4610 mdst.enableMobileProvisioning(url); 4611 } else { 4612 if (DBG) log("handleMobileProvisioningAction: on default network"); 4613 // Check for apps that can handle provisioning first 4614 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4615 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4616 + mTelephonyManager.getSimOperator()); 4617 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4618 != null) { 4619 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4620 Intent.FLAG_ACTIVITY_NEW_TASK); 4621 mContext.startActivity(provisioningIntent); 4622 } else { 4623 // If no apps exist, use standard URL ACTION_VIEW method 4624 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4625 Intent.CATEGORY_APP_BROWSER); 4626 newIntent.setData(Uri.parse(url)); 4627 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4628 Intent.FLAG_ACTIVITY_NEW_TASK); 4629 try { 4630 mContext.startActivity(newIntent); 4631 } catch (ActivityNotFoundException e) { 4632 loge("handleMobileProvisioningAction: startActivity failed" + e); 4633 } 4634 } 4635 } 4636 } 4637 4638 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4639 private volatile boolean mIsNotificationVisible = false; 4640 4641 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4642 String url) { 4643 if (DBG) { 4644 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4645 + " extraInfo=" + extraInfo + " url=" + url); 4646 } 4647 4648 Resources r = Resources.getSystem(); 4649 NotificationManager notificationManager = (NotificationManager) mContext 4650 .getSystemService(Context.NOTIFICATION_SERVICE); 4651 4652 if (visible) { 4653 CharSequence title; 4654 CharSequence details; 4655 int icon; 4656 Intent intent; 4657 Notification notification = new Notification(); 4658 switch (networkType) { 4659 case ConnectivityManager.TYPE_WIFI: 4660 title = r.getString(R.string.wifi_available_sign_in, 0); 4661 details = r.getString(R.string.network_available_sign_in_detailed, 4662 extraInfo); 4663 icon = R.drawable.stat_notify_wifi_in_range; 4664 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4665 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4666 Intent.FLAG_ACTIVITY_NEW_TASK); 4667 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4668 break; 4669 case ConnectivityManager.TYPE_MOBILE: 4670 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4671 title = r.getString(R.string.network_available_sign_in, 0); 4672 // TODO: Change this to pull from NetworkInfo once a printable 4673 // name has been added to it 4674 details = mTelephonyManager.getNetworkOperatorName(); 4675 icon = R.drawable.stat_notify_rssi_in_range; 4676 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4677 intent.putExtra("EXTRA_URL", url); 4678 intent.setFlags(0); 4679 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4680 break; 4681 default: 4682 title = r.getString(R.string.network_available_sign_in, 0); 4683 details = r.getString(R.string.network_available_sign_in_detailed, 4684 extraInfo); 4685 icon = R.drawable.stat_notify_rssi_in_range; 4686 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4687 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4688 Intent.FLAG_ACTIVITY_NEW_TASK); 4689 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4690 break; 4691 } 4692 4693 notification.when = 0; 4694 notification.icon = icon; 4695 notification.flags = Notification.FLAG_AUTO_CANCEL; 4696 notification.tickerText = title; 4697 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4698 4699 try { 4700 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4701 } catch (NullPointerException npe) { 4702 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4703 npe.printStackTrace(); 4704 } 4705 } else { 4706 try { 4707 notificationManager.cancel(NOTIFICATION_ID, networkType); 4708 } catch (NullPointerException npe) { 4709 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4710 npe.printStackTrace(); 4711 } 4712 } 4713 mIsNotificationVisible = visible; 4714 } 4715 4716 /** Location to an updatable file listing carrier provisioning urls. 4717 * An example: 4718 * 4719 * <?xml version="1.0" encoding="utf-8"?> 4720 * <provisioningUrls> 4721 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4722 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4723 * </provisioningUrls> 4724 */ 4725 private static final String PROVISIONING_URL_PATH = 4726 "/data/misc/radio/provisioning_urls.xml"; 4727 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4728 4729 /** XML tag for root element. */ 4730 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4731 /** XML tag for individual url */ 4732 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4733 /** XML tag for redirected url */ 4734 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4735 /** XML attribute for mcc */ 4736 private static final String ATTR_MCC = "mcc"; 4737 /** XML attribute for mnc */ 4738 private static final String ATTR_MNC = "mnc"; 4739 4740 private static final int REDIRECTED_PROVISIONING = 1; 4741 private static final int PROVISIONING = 2; 4742 4743 private String getProvisioningUrlBaseFromFile(int type) { 4744 FileReader fileReader = null; 4745 XmlPullParser parser = null; 4746 Configuration config = mContext.getResources().getConfiguration(); 4747 String tagType; 4748 4749 switch (type) { 4750 case PROVISIONING: 4751 tagType = TAG_PROVISIONING_URL; 4752 break; 4753 case REDIRECTED_PROVISIONING: 4754 tagType = TAG_REDIRECTED_URL; 4755 break; 4756 default: 4757 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4758 type); 4759 } 4760 4761 try { 4762 fileReader = new FileReader(mProvisioningUrlFile); 4763 parser = Xml.newPullParser(); 4764 parser.setInput(fileReader); 4765 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4766 4767 while (true) { 4768 XmlUtils.nextElement(parser); 4769 4770 String element = parser.getName(); 4771 if (element == null) break; 4772 4773 if (element.equals(tagType)) { 4774 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4775 try { 4776 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4777 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4778 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4779 parser.next(); 4780 if (parser.getEventType() == XmlPullParser.TEXT) { 4781 return parser.getText(); 4782 } 4783 } 4784 } 4785 } catch (NumberFormatException e) { 4786 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4787 } 4788 } 4789 } 4790 return null; 4791 } catch (FileNotFoundException e) { 4792 loge("Carrier Provisioning Urls file not found"); 4793 } catch (XmlPullParserException e) { 4794 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4795 } catch (IOException e) { 4796 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4797 } finally { 4798 if (fileReader != null) { 4799 try { 4800 fileReader.close(); 4801 } catch (IOException e) {} 4802 } 4803 } 4804 return null; 4805 } 4806 4807 @Override 4808 public String getMobileRedirectedProvisioningUrl() { 4809 enforceConnectivityInternalPermission(); 4810 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4811 if (TextUtils.isEmpty(url)) { 4812 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4813 } 4814 return url; 4815 } 4816 4817 @Override 4818 public String getMobileProvisioningUrl() { 4819 enforceConnectivityInternalPermission(); 4820 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4821 if (TextUtils.isEmpty(url)) { 4822 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4823 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4824 } else { 4825 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4826 } 4827 // populate the iccid, imei and phone number in the provisioning url. 4828 if (!TextUtils.isEmpty(url)) { 4829 String phoneNumber = mTelephonyManager.getLine1Number(); 4830 if (TextUtils.isEmpty(phoneNumber)) { 4831 phoneNumber = "0000000000"; 4832 } 4833 url = String.format(url, 4834 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4835 mTelephonyManager.getDeviceId() /* IMEI */, 4836 phoneNumber /* Phone numer */); 4837 } 4838 4839 return url; 4840 } 4841 4842 @Override 4843 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4844 String extraInfo, String url) { 4845 enforceConnectivityInternalPermission(); 4846 setProvNotificationVisible(visible, networkType, extraInfo, url); 4847 } 4848 4849 @Override 4850 public void setAirplaneMode(boolean enable) { 4851 enforceConnectivityInternalPermission(); 4852 final long ident = Binder.clearCallingIdentity(); 4853 try { 4854 final ContentResolver cr = mContext.getContentResolver(); 4855 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4856 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4857 intent.putExtra("state", enable); 4858 mContext.sendBroadcast(intent); 4859 } finally { 4860 Binder.restoreCallingIdentity(ident); 4861 } 4862 } 4863 4864 private void onUserStart(int userId) { 4865 synchronized(mVpns) { 4866 Vpn userVpn = mVpns.get(userId); 4867 if (userVpn != null) { 4868 loge("Starting user already has a VPN"); 4869 return; 4870 } 4871 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 4872 mVpns.put(userId, userVpn); 4873 userVpn.startMonitoring(mContext, mTrackerHandler); 4874 } 4875 } 4876 4877 private void onUserStop(int userId) { 4878 synchronized(mVpns) { 4879 Vpn userVpn = mVpns.get(userId); 4880 if (userVpn == null) { 4881 loge("Stopping user has no VPN"); 4882 return; 4883 } 4884 mVpns.delete(userId); 4885 } 4886 } 4887 4888 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 4889 @Override 4890 public void onReceive(Context context, Intent intent) { 4891 final String action = intent.getAction(); 4892 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 4893 if (userId == UserHandle.USER_NULL) return; 4894 4895 if (Intent.ACTION_USER_STARTING.equals(action)) { 4896 onUserStart(userId); 4897 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 4898 onUserStop(userId); 4899 } 4900 } 4901 }; 4902 4903 @Override 4904 public LinkQualityInfo getLinkQualityInfo(int networkType) { 4905 enforceAccessPermission(); 4906 if (isNetworkTypeValid(networkType)) { 4907 return mNetTrackers[networkType].getLinkQualityInfo(); 4908 } else { 4909 return null; 4910 } 4911 } 4912 4913 @Override 4914 public LinkQualityInfo getActiveLinkQualityInfo() { 4915 enforceAccessPermission(); 4916 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 4917 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 4918 } else { 4919 return null; 4920 } 4921 } 4922 4923 @Override 4924 public LinkQualityInfo[] getAllLinkQualityInfo() { 4925 enforceAccessPermission(); 4926 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 4927 for (NetworkStateTracker tracker : mNetTrackers) { 4928 if (tracker != null) { 4929 LinkQualityInfo li = tracker.getLinkQualityInfo(); 4930 if (li != null) { 4931 result.add(li); 4932 } 4933 } 4934 } 4935 4936 return result.toArray(new LinkQualityInfo[result.size()]); 4937 } 4938 4939 /* Infrastructure for network sampling */ 4940 4941 private void handleNetworkSamplingTimeout() { 4942 4943 log("Sampling interval elapsed, updating statistics .."); 4944 4945 // initialize list of interfaces .. 4946 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 4947 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 4948 for (NetworkStateTracker tracker : mNetTrackers) { 4949 if (tracker != null) { 4950 String ifaceName = tracker.getNetworkInterfaceName(); 4951 if (ifaceName != null) { 4952 mapIfaceToSample.put(ifaceName, null); 4953 } 4954 } 4955 } 4956 4957 // Read samples for all interfaces 4958 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4959 4960 // process samples for all networks 4961 for (NetworkStateTracker tracker : mNetTrackers) { 4962 if (tracker != null) { 4963 String ifaceName = tracker.getNetworkInterfaceName(); 4964 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 4965 if (ss != null) { 4966 // end the previous sampling cycle 4967 tracker.stopSampling(ss); 4968 // start a new sampling cycle .. 4969 tracker.startSampling(ss); 4970 } 4971 } 4972 } 4973 4974 log("Done."); 4975 4976 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 4977 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 4978 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 4979 4980 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 4981 4982 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 4983 } 4984 4985 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 4986 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 4987 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 4988 } 4989} 4990