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