ConnectivityService.java revision b2829fa165124264c7ec06a6e23b08a1d97b99e5
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_ETHERNET; 26import static android.net.ConnectivityManager.TYPE_MOBILE; 27import static android.net.ConnectivityManager.TYPE_WIFI; 28import static android.net.ConnectivityManager.TYPE_WIMAX; 29import static android.net.ConnectivityManager.TYPE_PROXY; 30import static android.net.ConnectivityManager.getNetworkTypeName; 31import static android.net.ConnectivityManager.isNetworkTypeValid; 32import static android.net.ConnectivityServiceProtocol.NetworkFactoryProtocol; 33import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 34import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 35 36import android.app.AlarmManager; 37import android.app.AppOpsManager; 38import android.app.Notification; 39import android.app.NotificationManager; 40import android.app.PendingIntent; 41import android.bluetooth.BluetoothTetheringDataTracker; 42import android.content.ActivityNotFoundException; 43import android.content.BroadcastReceiver; 44import android.content.ContentResolver; 45import android.content.Context; 46import android.content.ContextWrapper; 47import android.content.Intent; 48import android.content.IntentFilter; 49import android.content.pm.ApplicationInfo; 50import android.content.pm.PackageManager; 51import android.content.pm.PackageManager.NameNotFoundException; 52import android.content.res.Configuration; 53import android.content.res.Resources; 54import android.database.ContentObserver; 55import android.net.CaptivePortalTracker; 56import android.net.ConnectivityManager; 57import android.net.DummyDataStateTracker; 58import android.net.EthernetDataTracker; 59import android.net.IConnectivityManager; 60import android.net.INetworkManagementEventObserver; 61import android.net.INetworkPolicyListener; 62import android.net.INetworkPolicyManager; 63import android.net.INetworkStatsService; 64import android.net.LinkAddress; 65import android.net.LinkProperties; 66import android.net.LinkProperties.CompareResult; 67import android.net.LinkQualityInfo; 68import android.net.MobileDataStateTracker; 69import android.net.Network; 70import android.net.NetworkCapabilities; 71import android.net.NetworkConfig; 72import android.net.NetworkInfo; 73import android.net.NetworkInfo.DetailedState; 74import android.net.NetworkQuotaInfo; 75import android.net.NetworkRequest; 76import android.net.NetworkState; 77import android.net.NetworkStateTracker; 78import android.net.NetworkUtils; 79import android.net.Proxy; 80import android.net.ProxyDataTracker; 81import android.net.ProxyInfo; 82import android.net.RouteInfo; 83import android.net.SamplingDataTracker; 84import android.net.Uri; 85import android.net.wifi.WifiStateTracker; 86import android.net.wimax.WimaxManagerConstants; 87import android.os.AsyncTask; 88import android.os.Binder; 89import android.os.Build; 90import android.os.FileUtils; 91import android.os.Handler; 92import android.os.HandlerThread; 93import android.os.IBinder; 94import android.os.INetworkManagementService; 95import android.os.Looper; 96import android.os.Message; 97import android.os.Messenger; 98import android.os.ParcelFileDescriptor; 99import android.os.PowerManager; 100import android.os.Process; 101import android.os.RemoteException; 102import android.os.ServiceManager; 103import android.os.SystemClock; 104import android.os.SystemProperties; 105import android.os.UserHandle; 106import android.provider.Settings; 107import android.security.Credentials; 108import android.security.KeyStore; 109import android.telephony.TelephonyManager; 110import android.text.TextUtils; 111import android.util.Slog; 112import android.util.SparseArray; 113import android.util.SparseIntArray; 114import android.util.Xml; 115 116import com.android.internal.R; 117import com.android.internal.annotations.GuardedBy; 118import com.android.internal.net.LegacyVpnInfo; 119import com.android.internal.net.VpnConfig; 120import com.android.internal.net.VpnProfile; 121import com.android.internal.telephony.DctConstants; 122import com.android.internal.telephony.Phone; 123import com.android.internal.telephony.PhoneConstants; 124import com.android.internal.telephony.TelephonyIntents; 125import com.android.internal.util.AsyncChannel; 126import com.android.internal.util.IndentingPrintWriter; 127import com.android.internal.util.XmlUtils; 128import com.android.server.am.BatteryStatsService; 129import com.android.server.connectivity.DataConnectionStats; 130import com.android.server.connectivity.Nat464Xlat; 131import com.android.server.connectivity.PacManager; 132import com.android.server.connectivity.Tethering; 133import com.android.server.connectivity.Vpn; 134import com.android.server.net.BaseNetworkObserver; 135import com.android.server.net.LockdownVpnTracker; 136import com.google.android.collect.Lists; 137import com.google.android.collect.Sets; 138 139import dalvik.system.DexClassLoader; 140 141import org.xmlpull.v1.XmlPullParser; 142import org.xmlpull.v1.XmlPullParserException; 143 144import java.io.File; 145import java.io.FileDescriptor; 146import java.io.FileNotFoundException; 147import java.io.FileReader; 148import java.io.IOException; 149import java.io.PrintWriter; 150import java.lang.reflect.Constructor; 151import java.net.HttpURLConnection; 152import java.net.Inet4Address; 153import java.net.Inet6Address; 154import java.net.InetAddress; 155import java.net.URL; 156import java.net.UnknownHostException; 157import java.util.ArrayList; 158import java.util.Arrays; 159import java.util.Collection; 160import java.util.GregorianCalendar; 161import java.util.HashMap; 162import java.util.HashSet; 163import java.util.List; 164import java.util.Map; 165import java.util.Random; 166import java.util.concurrent.atomic.AtomicBoolean; 167import java.util.concurrent.atomic.AtomicInteger; 168 169import javax.net.ssl.HostnameVerifier; 170import javax.net.ssl.HttpsURLConnection; 171import javax.net.ssl.SSLSession; 172 173import static android.net.ConnectivityManager.INVALID_NET_ID; 174 175/** 176 * @hide 177 */ 178public class ConnectivityService extends IConnectivityManager.Stub { 179 private static final String TAG = "ConnectivityService"; 180 181 private static final boolean DBG = true; 182 private static final boolean VDBG = false; 183 184 private static final boolean LOGD_RULES = false; 185 186 // TODO: create better separation between radio types and network types 187 188 // how long to wait before switching back to a radio's default network 189 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 190 // system property that can override the above value 191 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 192 "android.telephony.apn-restore"; 193 194 // Default value if FAIL_FAST_TIME_MS is not set 195 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 196 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 197 private static final String FAIL_FAST_TIME_MS = 198 "persist.radio.fail_fast_time_ms"; 199 200 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 201 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 202 203 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 204 205 private PendingIntent mSampleIntervalElapsedIntent; 206 207 // Set network sampling interval at 12 minutes, this way, even if the timers get 208 // aggregated, it will fire at around 15 minutes, which should allow us to 209 // aggregate this timer with other timers (specially the socket keep alive timers) 210 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 12 * 60); 211 212 // start network sampling a minute after booting ... 213 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 60); 214 215 AlarmManager mAlarmManager; 216 217 // used in recursive route setting to add gateways for the host for which 218 // a host route was requested. 219 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 220 221 private Tethering mTethering; 222 223 private KeyStore mKeyStore; 224 225 @GuardedBy("mVpns") 226 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 227 private VpnCallback mVpnCallback = new VpnCallback(); 228 229 private boolean mLockdownEnabled; 230 private LockdownVpnTracker mLockdownTracker; 231 232 private Nat464Xlat mClat; 233 234 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 235 private Object mRulesLock = new Object(); 236 /** Currently active network rules by UID. */ 237 private SparseIntArray mUidRules = new SparseIntArray(); 238 /** Set of ifaces that are costly. */ 239 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 240 241 /** 242 * Sometimes we want to refer to the individual network state 243 * trackers separately, and sometimes we just want to treat them 244 * abstractly. 245 */ 246 private NetworkStateTracker mNetTrackers[]; 247 248 /* Handles captive portal check on a network */ 249 private CaptivePortalTracker mCaptivePortalTracker; 250 251 /** 252 * The link properties that define the current links 253 */ 254 private LinkProperties mCurrentLinkProperties[]; 255 256 /** 257 * A per Net list of the PID's that requested access to the net 258 * used both as a refcount and for per-PID DNS selection 259 */ 260 private List<Integer> mNetRequestersPids[]; 261 262 // priority order of the nettrackers 263 // (excluding dynamically set mNetworkPreference) 264 // TODO - move mNetworkTypePreference into this 265 private int[] mPriorityList; 266 267 private Context mContext; 268 private int mNetworkPreference; 269 private int mActiveDefaultNetwork = -1; 270 // 0 is full bad, 100 is full good 271 private int mDefaultInetCondition = 0; 272 private int mDefaultInetConditionPublished = 0; 273 private boolean mInetConditionChangeInFlight = false; 274 private int mDefaultConnectionSequence = 0; 275 276 private Object mDnsLock = new Object(); 277 private int mNumDnsEntries; 278 279 private boolean mTestMode; 280 private static ConnectivityService sServiceInstance; 281 282 private INetworkManagementService mNetd; 283 private INetworkPolicyManager mPolicyManager; 284 285 private static final int ENABLED = 1; 286 private static final int DISABLED = 0; 287 288 private static final boolean ADD = true; 289 private static final boolean REMOVE = false; 290 291 private static final boolean TO_DEFAULT_TABLE = true; 292 private static final boolean TO_SECONDARY_TABLE = false; 293 294 private static final boolean EXEMPT = true; 295 private static final boolean UNEXEMPT = false; 296 297 /** 298 * used internally as a delayed event to make us switch back to the 299 * default network 300 */ 301 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 302 303 /** 304 * used internally to change our mobile data enabled flag 305 */ 306 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 307 308 /** 309 * used internally to change our network preference setting 310 * arg1 = networkType to prefer 311 */ 312 private static final int EVENT_SET_NETWORK_PREFERENCE = 3; 313 314 /** 315 * used internally to synchronize inet condition reports 316 * arg1 = networkType 317 * arg2 = condition (0 bad, 100 good) 318 */ 319 private static final int EVENT_INET_CONDITION_CHANGE = 4; 320 321 /** 322 * used internally to mark the end of inet condition hold periods 323 * arg1 = networkType 324 */ 325 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 326 327 /** 328 * used internally to set enable/disable cellular data 329 * arg1 = ENBALED or DISABLED 330 */ 331 private static final int EVENT_SET_MOBILE_DATA = 7; 332 333 /** 334 * used internally to clear a wakelock when transitioning 335 * from one net to another 336 */ 337 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 338 339 /** 340 * used internally to reload global proxy settings 341 */ 342 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 343 344 /** 345 * used internally to set external dependency met/unmet 346 * arg1 = ENABLED (met) or DISABLED (unmet) 347 * arg2 = NetworkType 348 */ 349 private static final int EVENT_SET_DEPENDENCY_MET = 10; 350 351 /** 352 * used internally to send a sticky broadcast delayed. 353 */ 354 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 355 356 /** 357 * Used internally to 358 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 359 */ 360 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 361 362 private static final int EVENT_VPN_STATE_CHANGED = 13; 363 364 /** 365 * Used internally to disable fail fast of mobile data 366 */ 367 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 368 369 /** 370 * user internally to indicate that data sampling interval is up 371 */ 372 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 373 374 /** 375 * PAC manager has received new port. 376 */ 377 private static final int EVENT_PROXY_HAS_CHANGED = 16; 378 379 /** 380 * used internally when registering NetworkFactories 381 * obj = Messenger 382 */ 383 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 384 385 /** Handler used for internal events. */ 386 private InternalHandler mHandler; 387 /** Handler used for incoming {@link NetworkStateTracker} events. */ 388 private NetworkStateTrackerHandler mTrackerHandler; 389 390 // list of DeathRecipients used to make sure features are turned off when 391 // a process dies 392 private List<FeatureUser> mFeatureUsers; 393 394 private boolean mSystemReady; 395 private Intent mInitialBroadcast; 396 397 private PowerManager.WakeLock mNetTransitionWakeLock; 398 private String mNetTransitionWakeLockCausedBy = ""; 399 private int mNetTransitionWakeLockSerialNumber; 400 private int mNetTransitionWakeLockTimeout; 401 402 private InetAddress mDefaultDns; 403 404 // Lock for protecting access to mAddedRoutes and mExemptAddresses 405 private final Object mRoutesLock = new Object(); 406 407 // this collection is used to refcount the added routes - if there are none left 408 // it's time to remove the route from the route table 409 @GuardedBy("mRoutesLock") 410 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 411 412 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 413 // used to handle cleanup of exempt rules 414 @GuardedBy("mRoutesLock") 415 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 416 417 // used in DBG mode to track inet condition reports 418 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 419 private ArrayList mInetLog; 420 421 // track the current default http proxy - tell the world if we get a new one (real change) 422 private ProxyInfo mDefaultProxy = null; 423 private Object mProxyLock = new Object(); 424 private boolean mDefaultProxyDisabled = false; 425 426 // track the global proxy. 427 private ProxyInfo mGlobalProxy = null; 428 429 private PacManager mPacManager = null; 430 431 private SettingsObserver mSettingsObserver; 432 433 private AppOpsManager mAppOpsManager; 434 435 NetworkConfig[] mNetConfigs; 436 int mNetworksDefined; 437 438 private static class RadioAttributes { 439 public int mSimultaneity; 440 public int mType; 441 public RadioAttributes(String init) { 442 String fragments[] = init.split(","); 443 mType = Integer.parseInt(fragments[0]); 444 mSimultaneity = Integer.parseInt(fragments[1]); 445 } 446 } 447 RadioAttributes[] mRadioAttributes; 448 449 // the set of network types that can only be enabled by system/sig apps 450 List mProtectedNetworks; 451 452 private DataConnectionStats mDataConnectionStats; 453 454 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 455 456 TelephonyManager mTelephonyManager; 457 458 private final static int MIN_NET_ID = 10; // some reserved marks 459 private final static int MAX_NET_ID = 65535; 460 private int mNextNetId = MIN_NET_ID; 461 462 public ConnectivityService(Context context, INetworkManagementService netd, 463 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 464 // Currently, omitting a NetworkFactory will create one internally 465 // TODO: create here when we have cleaner WiMAX support 466 this(context, netd, statsService, policyManager, null); 467 } 468 469 public ConnectivityService(Context context, INetworkManagementService netManager, 470 INetworkStatsService statsService, INetworkPolicyManager policyManager, 471 NetworkFactory netFactory) { 472 if (DBG) log("ConnectivityService starting up"); 473 474 NetworkCapabilities netCap = new NetworkCapabilities(); 475 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 476 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 477 NetworkRequest netRequest = new NetworkRequest(netCap); 478 mNetworkRequests.append(netRequest.requestId, netRequest); 479 480 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 481 handlerThread.start(); 482 mHandler = new InternalHandler(handlerThread.getLooper()); 483 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 484 485 if (netFactory == null) { 486 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 487 } 488 489 // setup our unique device name 490 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 491 String id = Settings.Secure.getString(context.getContentResolver(), 492 Settings.Secure.ANDROID_ID); 493 if (id != null && id.length() > 0) { 494 String name = new String("android-").concat(id); 495 SystemProperties.set("net.hostname", name); 496 } 497 } 498 499 // read our default dns server ip 500 String dns = Settings.Global.getString(context.getContentResolver(), 501 Settings.Global.DEFAULT_DNS_SERVER); 502 if (dns == null || dns.length() == 0) { 503 dns = context.getResources().getString( 504 com.android.internal.R.string.config_default_dns_server); 505 } 506 try { 507 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 508 } catch (IllegalArgumentException e) { 509 loge("Error setting defaultDns using " + dns); 510 } 511 512 mContext = checkNotNull(context, "missing Context"); 513 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 514 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 515 mKeyStore = KeyStore.getInstance(); 516 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 517 518 try { 519 mPolicyManager.registerListener(mPolicyListener); 520 } catch (RemoteException e) { 521 // ouch, no rules updates means some processes may never get network 522 loge("unable to register INetworkPolicyListener" + e.toString()); 523 } 524 525 final PowerManager powerManager = (PowerManager) context.getSystemService( 526 Context.POWER_SERVICE); 527 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 528 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 529 com.android.internal.R.integer.config_networkTransitionTimeout); 530 531 mNetTrackers = new NetworkStateTracker[ 532 ConnectivityManager.MAX_NETWORK_TYPE+1]; 533 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 534 535 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 536 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 537 538 // Load device network attributes from resources 539 String[] raStrings = context.getResources().getStringArray( 540 com.android.internal.R.array.radioAttributes); 541 for (String raString : raStrings) { 542 RadioAttributes r = new RadioAttributes(raString); 543 if (VDBG) log("raString=" + raString + " r=" + r); 544 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 545 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 546 continue; 547 } 548 if (mRadioAttributes[r.mType] != null) { 549 loge("Error in radioAttributes - ignoring attempt to redefine type " + 550 r.mType); 551 continue; 552 } 553 mRadioAttributes[r.mType] = r; 554 } 555 556 // TODO: What is the "correct" way to do determine if this is a wifi only device? 557 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 558 log("wifiOnly=" + wifiOnly); 559 String[] naStrings = context.getResources().getStringArray( 560 com.android.internal.R.array.networkAttributes); 561 for (String naString : naStrings) { 562 try { 563 NetworkConfig n = new NetworkConfig(naString); 564 if (VDBG) log("naString=" + naString + " config=" + n); 565 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 566 loge("Error in networkAttributes - ignoring attempt to define type " + 567 n.type); 568 continue; 569 } 570 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 571 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 572 n.type); 573 continue; 574 } 575 if (mNetConfigs[n.type] != null) { 576 loge("Error in networkAttributes - ignoring attempt to redefine type " + 577 n.type); 578 continue; 579 } 580 if (mRadioAttributes[n.radio] == null) { 581 loge("Error in networkAttributes - ignoring attempt to use undefined " + 582 "radio " + n.radio + " in network type " + n.type); 583 continue; 584 } 585 mNetConfigs[n.type] = n; 586 mNetworksDefined++; 587 } catch(Exception e) { 588 // ignore it - leave the entry null 589 } 590 } 591 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 592 593 mProtectedNetworks = new ArrayList<Integer>(); 594 int[] protectedNetworks = context.getResources().getIntArray( 595 com.android.internal.R.array.config_protectedNetworks); 596 for (int p : protectedNetworks) { 597 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 598 mProtectedNetworks.add(p); 599 } else { 600 if (DBG) loge("Ignoring protectedNetwork " + p); 601 } 602 } 603 604 // high priority first 605 mPriorityList = new int[mNetworksDefined]; 606 { 607 int insertionPoint = mNetworksDefined-1; 608 int currentLowest = 0; 609 int nextLowest = 0; 610 while (insertionPoint > -1) { 611 for (NetworkConfig na : mNetConfigs) { 612 if (na == null) continue; 613 if (na.priority < currentLowest) continue; 614 if (na.priority > currentLowest) { 615 if (na.priority < nextLowest || nextLowest == 0) { 616 nextLowest = na.priority; 617 } 618 continue; 619 } 620 mPriorityList[insertionPoint--] = na.type; 621 } 622 currentLowest = nextLowest; 623 nextLowest = 0; 624 } 625 } 626 627 // Update mNetworkPreference according to user mannually first then overlay config.xml 628 mNetworkPreference = getPersistedNetworkPreference(); 629 if (mNetworkPreference == -1) { 630 for (int n : mPriorityList) { 631 if (mNetConfigs[n].isDefault() && ConnectivityManager.isNetworkTypeValid(n)) { 632 mNetworkPreference = n; 633 break; 634 } 635 } 636 if (mNetworkPreference == -1) { 637 throw new IllegalStateException( 638 "You should set at least one default Network in config.xml!"); 639 } 640 } 641 642 mNetRequestersPids = 643 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 644 for (int i : mPriorityList) { 645 mNetRequestersPids[i] = new ArrayList<Integer>(); 646 } 647 648 mFeatureUsers = new ArrayList<FeatureUser>(); 649 650 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 651 && SystemProperties.get("ro.build.type").equals("eng"); 652 653 // Create and start trackers for hard-coded networks 654 for (int targetNetworkType : mPriorityList) { 655 final NetworkConfig config = mNetConfigs[targetNetworkType]; 656 final NetworkStateTracker tracker; 657 try { 658 tracker = netFactory.createTracker(targetNetworkType, config); 659 mNetTrackers[targetNetworkType] = tracker; 660 } catch (IllegalArgumentException e) { 661 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 662 + " tracker: " + e); 663 continue; 664 } 665 666 tracker.startMonitoring(context, mTrackerHandler); 667 if (config.isDefault()) { 668 tracker.reconnect(); 669 } 670 } 671 672 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 673 674 //set up the listener for user state for creating user VPNs 675 IntentFilter intentFilter = new IntentFilter(); 676 intentFilter.addAction(Intent.ACTION_USER_STARTING); 677 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 678 mContext.registerReceiverAsUser( 679 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 680 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 681 682 try { 683 mNetd.registerObserver(mTethering); 684 mNetd.registerObserver(mDataActivityObserver); 685 mNetd.registerObserver(mClat); 686 } catch (RemoteException e) { 687 loge("Error registering observer :" + e); 688 } 689 690 if (DBG) { 691 mInetLog = new ArrayList(); 692 } 693 694 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 695 mSettingsObserver.observe(mContext); 696 697 mDataConnectionStats = new DataConnectionStats(mContext); 698 mDataConnectionStats.startMonitoring(); 699 700 // start network sampling .. 701 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 702 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 703 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 704 705 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 706 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 707 708 IntentFilter filter = new IntentFilter(); 709 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 710 mContext.registerReceiver( 711 new BroadcastReceiver() { 712 @Override 713 public void onReceive(Context context, Intent intent) { 714 String action = intent.getAction(); 715 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 716 mHandler.sendMessage(mHandler.obtainMessage 717 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 718 } 719 } 720 }, 721 new IntentFilter(filter)); 722 723 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 724 725 filter = new IntentFilter(); 726 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 727 mContext.registerReceiver(mProvisioningReceiver, filter); 728 729 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 730 } 731 732 private synchronized int nextNetId() { 733 int netId = mNextNetId; 734 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 735 return netId; 736 } 737 738 /** 739 * Factory that creates {@link NetworkStateTracker} instances using given 740 * {@link NetworkConfig}. 741 */ 742 public interface NetworkFactory { 743 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 744 } 745 746 private static class DefaultNetworkFactory implements NetworkFactory { 747 private final Context mContext; 748 private final Handler mTrackerHandler; 749 750 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 751 mContext = context; 752 mTrackerHandler = trackerHandler; 753 } 754 755 @Override 756 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 757 switch (config.radio) { 758 case TYPE_WIFI: 759 return new WifiStateTracker(targetNetworkType, config.name); 760 case TYPE_MOBILE: 761 return new MobileDataStateTracker(targetNetworkType, config.name); 762 case TYPE_DUMMY: 763 return new DummyDataStateTracker(targetNetworkType, config.name); 764 case TYPE_BLUETOOTH: 765 return BluetoothTetheringDataTracker.getInstance(); 766 case TYPE_WIMAX: 767 return makeWimaxStateTracker(mContext, mTrackerHandler); 768 case TYPE_ETHERNET: 769 return EthernetDataTracker.getInstance(); 770 case TYPE_PROXY: 771 return new ProxyDataTracker(); 772 default: 773 throw new IllegalArgumentException( 774 "Trying to create a NetworkStateTracker for an unknown radio type: " 775 + config.radio); 776 } 777 } 778 } 779 780 /** 781 * Loads external WiMAX library and registers as system service, returning a 782 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 783 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 784 */ 785 private static NetworkStateTracker makeWimaxStateTracker( 786 Context context, Handler trackerHandler) { 787 // Initialize Wimax 788 DexClassLoader wimaxClassLoader; 789 Class wimaxStateTrackerClass = null; 790 Class wimaxServiceClass = null; 791 Class wimaxManagerClass; 792 String wimaxJarLocation; 793 String wimaxLibLocation; 794 String wimaxManagerClassName; 795 String wimaxServiceClassName; 796 String wimaxStateTrackerClassName; 797 798 NetworkStateTracker wimaxStateTracker = null; 799 800 boolean isWimaxEnabled = context.getResources().getBoolean( 801 com.android.internal.R.bool.config_wimaxEnabled); 802 803 if (isWimaxEnabled) { 804 try { 805 wimaxJarLocation = context.getResources().getString( 806 com.android.internal.R.string.config_wimaxServiceJarLocation); 807 wimaxLibLocation = context.getResources().getString( 808 com.android.internal.R.string.config_wimaxNativeLibLocation); 809 wimaxManagerClassName = context.getResources().getString( 810 com.android.internal.R.string.config_wimaxManagerClassname); 811 wimaxServiceClassName = context.getResources().getString( 812 com.android.internal.R.string.config_wimaxServiceClassname); 813 wimaxStateTrackerClassName = context.getResources().getString( 814 com.android.internal.R.string.config_wimaxStateTrackerClassname); 815 816 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 817 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 818 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 819 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 820 821 try { 822 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 823 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 824 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 825 } catch (ClassNotFoundException ex) { 826 loge("Exception finding Wimax classes: " + ex.toString()); 827 return null; 828 } 829 } catch(Resources.NotFoundException ex) { 830 loge("Wimax Resources does not exist!!! "); 831 return null; 832 } 833 834 try { 835 if (DBG) log("Starting Wimax Service... "); 836 837 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 838 (new Class[] {Context.class, Handler.class}); 839 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 840 context, trackerHandler); 841 842 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 843 (new Class[] {Context.class, wimaxStateTrackerClass}); 844 wmxSrvConst.setAccessible(true); 845 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 846 wmxSrvConst.setAccessible(false); 847 848 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 849 850 } catch(Exception ex) { 851 loge("Exception creating Wimax classes: " + ex.toString()); 852 return null; 853 } 854 } else { 855 loge("Wimax is not enabled or not added to the network attributes!!! "); 856 return null; 857 } 858 859 return wimaxStateTracker; 860 } 861 862 /** 863 * Sets the preferred network. 864 * @param preference the new preference 865 */ 866 public void setNetworkPreference(int preference) { 867 enforceChangePermission(); 868 869 mHandler.sendMessage( 870 mHandler.obtainMessage(EVENT_SET_NETWORK_PREFERENCE, preference, 0)); 871 } 872 873 public int getNetworkPreference() { 874 enforceAccessPermission(); 875 int preference; 876 synchronized(this) { 877 preference = mNetworkPreference; 878 } 879 return preference; 880 } 881 882 private void handleSetNetworkPreference(int preference) { 883 if (ConnectivityManager.isNetworkTypeValid(preference) && 884 mNetConfigs[preference] != null && 885 mNetConfigs[preference].isDefault()) { 886 if (mNetworkPreference != preference) { 887 final ContentResolver cr = mContext.getContentResolver(); 888 Settings.Global.putInt(cr, Settings.Global.NETWORK_PREFERENCE, preference); 889 synchronized(this) { 890 mNetworkPreference = preference; 891 } 892 enforcePreference(); 893 } 894 } 895 } 896 897 private int getConnectivityChangeDelay() { 898 final ContentResolver cr = mContext.getContentResolver(); 899 900 /** Check system properties for the default value then use secure settings value, if any. */ 901 int defaultDelay = SystemProperties.getInt( 902 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 903 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 904 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 905 defaultDelay); 906 } 907 908 private int getPersistedNetworkPreference() { 909 final ContentResolver cr = mContext.getContentResolver(); 910 911 final int networkPrefSetting = Settings.Global 912 .getInt(cr, Settings.Global.NETWORK_PREFERENCE, -1); 913 914 return networkPrefSetting; 915 } 916 917 /** 918 * Make the state of network connectivity conform to the preference settings 919 * In this method, we only tear down a non-preferred network. Establishing 920 * a connection to the preferred network is taken care of when we handle 921 * the disconnect event from the non-preferred network 922 * (see {@link #handleDisconnect(NetworkInfo)}). 923 */ 924 private void enforcePreference() { 925 if (mNetTrackers[mNetworkPreference].getNetworkInfo().isConnected()) 926 return; 927 928 if (!mNetTrackers[mNetworkPreference].isAvailable()) 929 return; 930 931 for (int t=0; t <= ConnectivityManager.MAX_RADIO_TYPE; t++) { 932 if (t != mNetworkPreference && mNetTrackers[t] != null && 933 mNetTrackers[t].getNetworkInfo().isConnected()) { 934 if (DBG) { 935 log("tearing down " + mNetTrackers[t].getNetworkInfo() + 936 " in enforcePreference"); 937 } 938 teardown(mNetTrackers[t]); 939 } 940 } 941 } 942 943 private boolean teardown(NetworkStateTracker netTracker) { 944 if (netTracker.teardown()) { 945 netTracker.setTeardownRequested(true); 946 return true; 947 } else { 948 return false; 949 } 950 } 951 952 /** 953 * Check if UID should be blocked from using the network represented by the 954 * given {@link NetworkStateTracker}. 955 */ 956 private boolean isNetworkBlocked(NetworkStateTracker tracker, int uid) { 957 final String iface = tracker.getLinkProperties().getInterfaceName(); 958 959 final boolean networkCostly; 960 final int uidRules; 961 synchronized (mRulesLock) { 962 networkCostly = mMeteredIfaces.contains(iface); 963 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 964 } 965 966 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 967 return true; 968 } 969 970 // no restrictive rules; network is visible 971 return false; 972 } 973 974 /** 975 * Return a filtered {@link NetworkInfo}, potentially marked 976 * {@link DetailedState#BLOCKED} based on 977 * {@link #isNetworkBlocked(NetworkStateTracker, int)}. 978 */ 979 private NetworkInfo getFilteredNetworkInfo(NetworkStateTracker tracker, int uid) { 980 NetworkInfo info = tracker.getNetworkInfo(); 981 if (isNetworkBlocked(tracker, uid)) { 982 // network is blocked; clone and override state 983 info = new NetworkInfo(info); 984 info.setDetailedState(DetailedState.BLOCKED, null, null); 985 } 986 if (mLockdownTracker != null) { 987 info = mLockdownTracker.augmentNetworkInfo(info); 988 } 989 return info; 990 } 991 992 /** 993 * Return NetworkInfo for the active (i.e., connected) network interface. 994 * It is assumed that at most one network is active at a time. If more 995 * than one is active, it is indeterminate which will be returned. 996 * @return the info for the active network, or {@code null} if none is 997 * active 998 */ 999 @Override 1000 public NetworkInfo getActiveNetworkInfo() { 1001 enforceAccessPermission(); 1002 final int uid = Binder.getCallingUid(); 1003 return getNetworkInfo(mActiveDefaultNetwork, uid); 1004 } 1005 1006 /** 1007 * Find the first Provisioning network. 1008 * 1009 * @return NetworkInfo or null if none. 1010 */ 1011 private NetworkInfo getProvisioningNetworkInfo() { 1012 enforceAccessPermission(); 1013 1014 // Find the first Provisioning Network 1015 NetworkInfo provNi = null; 1016 for (NetworkInfo ni : getAllNetworkInfo()) { 1017 if (ni.isConnectedToProvisioningNetwork()) { 1018 provNi = ni; 1019 break; 1020 } 1021 } 1022 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1023 return provNi; 1024 } 1025 1026 /** 1027 * Find the first Provisioning network or the ActiveDefaultNetwork 1028 * if there is no Provisioning network 1029 * 1030 * @return NetworkInfo or null if none. 1031 */ 1032 @Override 1033 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1034 enforceAccessPermission(); 1035 1036 NetworkInfo provNi = getProvisioningNetworkInfo(); 1037 if (provNi == null) { 1038 final int uid = Binder.getCallingUid(); 1039 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1040 } 1041 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1042 return provNi; 1043 } 1044 1045 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1046 enforceAccessPermission(); 1047 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1048 final NetworkStateTracker tracker = mNetTrackers[mActiveDefaultNetwork]; 1049 if (tracker != null) { 1050 return tracker.getNetworkInfo(); 1051 } 1052 } 1053 return null; 1054 } 1055 1056 @Override 1057 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1058 enforceConnectivityInternalPermission(); 1059 return getNetworkInfo(mActiveDefaultNetwork, uid); 1060 } 1061 1062 @Override 1063 public NetworkInfo getNetworkInfo(int networkType) { 1064 enforceAccessPermission(); 1065 final int uid = Binder.getCallingUid(); 1066 return getNetworkInfo(networkType, uid); 1067 } 1068 1069 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1070 NetworkInfo info = null; 1071 if (isNetworkTypeValid(networkType)) { 1072 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1073 if (tracker != null) { 1074 info = getFilteredNetworkInfo(tracker, uid); 1075 } 1076 } 1077 return info; 1078 } 1079 1080 @Override 1081 public NetworkInfo[] getAllNetworkInfo() { 1082 enforceAccessPermission(); 1083 final int uid = Binder.getCallingUid(); 1084 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1085 synchronized (mRulesLock) { 1086 for (NetworkStateTracker tracker : mNetTrackers) { 1087 if (tracker != null) { 1088 result.add(getFilteredNetworkInfo(tracker, uid)); 1089 } 1090 } 1091 } 1092 return result.toArray(new NetworkInfo[result.size()]); 1093 } 1094 1095 @Override 1096 public boolean isNetworkSupported(int networkType) { 1097 enforceAccessPermission(); 1098 return (isNetworkTypeValid(networkType) && (mNetTrackers[networkType] != null)); 1099 } 1100 1101 /** 1102 * Return LinkProperties for the active (i.e., connected) default 1103 * network interface. It is assumed that at most one default network 1104 * is active at a time. If more than one is active, it is indeterminate 1105 * which will be returned. 1106 * @return the ip properties for the active network, or {@code null} if 1107 * none is active 1108 */ 1109 @Override 1110 public LinkProperties getActiveLinkProperties() { 1111 return getLinkProperties(mActiveDefaultNetwork); 1112 } 1113 1114 @Override 1115 public LinkProperties getLinkProperties(int networkType) { 1116 enforceAccessPermission(); 1117 if (isNetworkTypeValid(networkType)) { 1118 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1119 if (tracker != null) { 1120 return tracker.getLinkProperties(); 1121 } 1122 } 1123 return null; 1124 } 1125 1126 @Override 1127 public NetworkState[] getAllNetworkState() { 1128 enforceAccessPermission(); 1129 final int uid = Binder.getCallingUid(); 1130 final ArrayList<NetworkState> result = Lists.newArrayList(); 1131 synchronized (mRulesLock) { 1132 for (NetworkStateTracker tracker : mNetTrackers) { 1133 if (tracker != null) { 1134 final NetworkInfo info = getFilteredNetworkInfo(tracker, uid); 1135 result.add(new NetworkState( 1136 info, tracker.getLinkProperties(), tracker.getNetworkCapabilities())); 1137 } 1138 } 1139 } 1140 return result.toArray(new NetworkState[result.size()]); 1141 } 1142 1143 private NetworkState getNetworkStateUnchecked(int networkType) { 1144 if (isNetworkTypeValid(networkType)) { 1145 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1146 if (tracker != null) { 1147 return new NetworkState(tracker.getNetworkInfo(), tracker.getLinkProperties(), 1148 tracker.getNetworkCapabilities()); 1149 } 1150 } 1151 return null; 1152 } 1153 1154 @Override 1155 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1156 enforceAccessPermission(); 1157 1158 final long token = Binder.clearCallingIdentity(); 1159 try { 1160 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1161 if (state != null) { 1162 try { 1163 return mPolicyManager.getNetworkQuotaInfo(state); 1164 } catch (RemoteException e) { 1165 } 1166 } 1167 return null; 1168 } finally { 1169 Binder.restoreCallingIdentity(token); 1170 } 1171 } 1172 1173 @Override 1174 public boolean isActiveNetworkMetered() { 1175 enforceAccessPermission(); 1176 final long token = Binder.clearCallingIdentity(); 1177 try { 1178 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1179 } finally { 1180 Binder.restoreCallingIdentity(token); 1181 } 1182 } 1183 1184 private boolean isNetworkMeteredUnchecked(int networkType) { 1185 final NetworkState state = getNetworkStateUnchecked(networkType); 1186 if (state != null) { 1187 try { 1188 return mPolicyManager.isNetworkMetered(state); 1189 } catch (RemoteException e) { 1190 } 1191 } 1192 return false; 1193 } 1194 1195 public boolean setRadios(boolean turnOn) { 1196 boolean result = true; 1197 enforceChangePermission(); 1198 for (NetworkStateTracker t : mNetTrackers) { 1199 if (t != null) result = t.setRadio(turnOn) && result; 1200 } 1201 return result; 1202 } 1203 1204 public boolean setRadio(int netType, boolean turnOn) { 1205 enforceChangePermission(); 1206 if (!ConnectivityManager.isNetworkTypeValid(netType)) { 1207 return false; 1208 } 1209 NetworkStateTracker tracker = mNetTrackers[netType]; 1210 return tracker != null && tracker.setRadio(turnOn); 1211 } 1212 1213 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1214 @Override 1215 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1216 int deviceType = Integer.parseInt(label); 1217 sendDataActivityBroadcast(deviceType, active, tsNanos); 1218 } 1219 }; 1220 1221 /** 1222 * Used to notice when the calling process dies so we can self-expire 1223 * 1224 * Also used to know if the process has cleaned up after itself when 1225 * our auto-expire timer goes off. The timer has a link to an object. 1226 * 1227 */ 1228 private class FeatureUser implements IBinder.DeathRecipient { 1229 int mNetworkType; 1230 String mFeature; 1231 IBinder mBinder; 1232 int mPid; 1233 int mUid; 1234 long mCreateTime; 1235 1236 FeatureUser(int type, String feature, IBinder binder) { 1237 super(); 1238 mNetworkType = type; 1239 mFeature = feature; 1240 mBinder = binder; 1241 mPid = getCallingPid(); 1242 mUid = getCallingUid(); 1243 mCreateTime = System.currentTimeMillis(); 1244 1245 try { 1246 mBinder.linkToDeath(this, 0); 1247 } catch (RemoteException e) { 1248 binderDied(); 1249 } 1250 } 1251 1252 void unlinkDeathRecipient() { 1253 mBinder.unlinkToDeath(this, 0); 1254 } 1255 1256 public void binderDied() { 1257 log("ConnectivityService FeatureUser binderDied(" + 1258 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1259 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1260 stopUsingNetworkFeature(this, false); 1261 } 1262 1263 public void expire() { 1264 if (VDBG) { 1265 log("ConnectivityService FeatureUser expire(" + 1266 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1267 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1268 } 1269 stopUsingNetworkFeature(this, false); 1270 } 1271 1272 public boolean isSameUser(FeatureUser u) { 1273 if (u == null) return false; 1274 1275 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1276 } 1277 1278 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1279 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1280 TextUtils.equals(mFeature, feature)) { 1281 return true; 1282 } 1283 return false; 1284 } 1285 1286 public String toString() { 1287 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1288 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1289 } 1290 } 1291 1292 // javadoc from interface 1293 public int startUsingNetworkFeature(int networkType, String feature, 1294 IBinder binder) { 1295 long startTime = 0; 1296 if (DBG) { 1297 startTime = SystemClock.elapsedRealtime(); 1298 } 1299 if (VDBG) { 1300 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1301 + Binder.getCallingUid()); 1302 } 1303 enforceChangePermission(); 1304 try { 1305 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1306 mNetConfigs[networkType] == null) { 1307 return PhoneConstants.APN_REQUEST_FAILED; 1308 } 1309 1310 FeatureUser f = new FeatureUser(networkType, feature, binder); 1311 1312 // TODO - move this into individual networktrackers 1313 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1314 1315 if (mLockdownEnabled) { 1316 // Since carrier APNs usually aren't available from VPN 1317 // endpoint, mark them as unavailable. 1318 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1319 } 1320 1321 if (mProtectedNetworks.contains(usedNetworkType)) { 1322 enforceConnectivityInternalPermission(); 1323 } 1324 1325 // if UID is restricted, don't allow them to bring up metered APNs 1326 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1327 final int uidRules; 1328 synchronized (mRulesLock) { 1329 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1330 } 1331 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1332 return PhoneConstants.APN_REQUEST_FAILED; 1333 } 1334 1335 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1336 if (network != null) { 1337 Integer currentPid = new Integer(getCallingPid()); 1338 if (usedNetworkType != networkType) { 1339 NetworkInfo ni = network.getNetworkInfo(); 1340 1341 if (ni.isAvailable() == false) { 1342 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1343 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1344 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1345 } else { 1346 // else make the attempt anyway - probably giving REQUEST_STARTED below 1347 if (DBG) { 1348 log("special network not available, but try anyway ni=" + 1349 ni.getTypeName()); 1350 } 1351 } 1352 } 1353 1354 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1355 1356 synchronized(this) { 1357 boolean addToList = true; 1358 if (restoreTimer < 0) { 1359 // In case there is no timer is specified for the feature, 1360 // make sure we don't add duplicate entry with the same request. 1361 for (FeatureUser u : mFeatureUsers) { 1362 if (u.isSameUser(f)) { 1363 // Duplicate user is found. Do not add. 1364 addToList = false; 1365 break; 1366 } 1367 } 1368 } 1369 1370 if (addToList) 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 1377 if (restoreTimer >= 0) { 1378 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1379 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1380 } 1381 1382 if ((ni.isConnectedOrConnecting() == true) && 1383 !network.isTeardownRequested()) { 1384 if (ni.isConnected() == true) { 1385 final long token = Binder.clearCallingIdentity(); 1386 try { 1387 // add the pid-specific dns 1388 handleDnsConfigurationChange(usedNetworkType); 1389 if (VDBG) log("special network already active"); 1390 } finally { 1391 Binder.restoreCallingIdentity(token); 1392 } 1393 return PhoneConstants.APN_ALREADY_ACTIVE; 1394 } 1395 if (VDBG) log("special network already connecting"); 1396 return PhoneConstants.APN_REQUEST_STARTED; 1397 } 1398 1399 // check if the radio in play can make another contact 1400 // assume if cannot for now 1401 1402 if (DBG) { 1403 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1404 feature); 1405 } 1406 if (network.reconnect()) { 1407 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1408 return PhoneConstants.APN_REQUEST_STARTED; 1409 } else { 1410 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1411 return PhoneConstants.APN_REQUEST_FAILED; 1412 } 1413 } else { 1414 // need to remember this unsupported request so we respond appropriately on stop 1415 synchronized(this) { 1416 mFeatureUsers.add(f); 1417 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1418 // this gets used for per-pid dns when connected 1419 mNetRequestersPids[usedNetworkType].add(currentPid); 1420 } 1421 } 1422 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1423 return -1; 1424 } 1425 } 1426 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1427 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1428 } finally { 1429 if (DBG) { 1430 final long execTime = SystemClock.elapsedRealtime() - startTime; 1431 if (execTime > 250) { 1432 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1433 } else { 1434 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1435 } 1436 } 1437 } 1438 } 1439 1440 // javadoc from interface 1441 public int stopUsingNetworkFeature(int networkType, String feature) { 1442 enforceChangePermission(); 1443 1444 int pid = getCallingPid(); 1445 int uid = getCallingUid(); 1446 1447 FeatureUser u = null; 1448 boolean found = false; 1449 1450 synchronized(this) { 1451 for (FeatureUser x : mFeatureUsers) { 1452 if (x.isSameUser(pid, uid, networkType, feature)) { 1453 u = x; 1454 found = true; 1455 break; 1456 } 1457 } 1458 } 1459 if (found && u != null) { 1460 if (VDBG) log("stopUsingNetworkFeature: X"); 1461 // stop regardless of how many other time this proc had called start 1462 return stopUsingNetworkFeature(u, true); 1463 } else { 1464 // none found! 1465 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1466 return 1; 1467 } 1468 } 1469 1470 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1471 int networkType = u.mNetworkType; 1472 String feature = u.mFeature; 1473 int pid = u.mPid; 1474 int uid = u.mUid; 1475 1476 NetworkStateTracker tracker = null; 1477 boolean callTeardown = false; // used to carry our decision outside of sync block 1478 1479 if (VDBG) { 1480 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1481 } 1482 1483 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1484 if (DBG) { 1485 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1486 ", net is invalid"); 1487 } 1488 return -1; 1489 } 1490 1491 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1492 // sync block 1493 synchronized(this) { 1494 // check if this process still has an outstanding start request 1495 if (!mFeatureUsers.contains(u)) { 1496 if (VDBG) { 1497 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1498 ", ignoring"); 1499 } 1500 return 1; 1501 } 1502 u.unlinkDeathRecipient(); 1503 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1504 // If we care about duplicate requests, check for that here. 1505 // 1506 // This is done to support the extension of a request - the app 1507 // can request we start the network feature again and renew the 1508 // auto-shutoff delay. Normal "stop" calls from the app though 1509 // do not pay attention to duplicate requests - in effect the 1510 // API does not refcount and a single stop will counter multiple starts. 1511 if (ignoreDups == false) { 1512 for (FeatureUser x : mFeatureUsers) { 1513 if (x.isSameUser(u)) { 1514 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1515 return 1; 1516 } 1517 } 1518 } 1519 1520 // TODO - move to individual network trackers 1521 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1522 1523 tracker = mNetTrackers[usedNetworkType]; 1524 if (tracker == null) { 1525 if (DBG) { 1526 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1527 " no known tracker for used net type " + usedNetworkType); 1528 } 1529 return -1; 1530 } 1531 if (usedNetworkType != networkType) { 1532 Integer currentPid = new Integer(pid); 1533 mNetRequestersPids[usedNetworkType].remove(currentPid); 1534 1535 final long token = Binder.clearCallingIdentity(); 1536 try { 1537 reassessPidDns(pid, true); 1538 } finally { 1539 Binder.restoreCallingIdentity(token); 1540 } 1541 flushVmDnsCache(); 1542 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1543 if (VDBG) { 1544 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1545 " others still using it"); 1546 } 1547 return 1; 1548 } 1549 callTeardown = true; 1550 } else { 1551 if (DBG) { 1552 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1553 " not a known feature - dropping"); 1554 } 1555 } 1556 } 1557 1558 if (callTeardown) { 1559 if (DBG) { 1560 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1561 } 1562 tracker.teardown(); 1563 return 1; 1564 } else { 1565 return -1; 1566 } 1567 } 1568 1569 /** 1570 * Check if the address falls into any of currently running VPN's route's. 1571 */ 1572 private boolean isAddressUnderVpn(InetAddress address) { 1573 synchronized (mVpns) { 1574 synchronized (mRoutesLock) { 1575 int uid = UserHandle.getCallingUserId(); 1576 Vpn vpn = mVpns.get(uid); 1577 if (vpn == null) { 1578 return false; 1579 } 1580 1581 // Check if an exemption exists for this address. 1582 for (LinkAddress destination : mExemptAddresses) { 1583 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1584 continue; 1585 } 1586 1587 int prefix = destination.getNetworkPrefixLength(); 1588 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1589 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1590 prefix); 1591 1592 if (addrMasked.equals(destMasked)) { 1593 return false; 1594 } 1595 } 1596 1597 // Finally check if the address is covered by the VPN. 1598 return vpn.isAddressCovered(address); 1599 } 1600 } 1601 } 1602 1603 /** 1604 * @deprecated use requestRouteToHostAddress instead 1605 * 1606 * Ensure that a network route exists to deliver traffic to the specified 1607 * host via the specified network interface. 1608 * @param networkType the type of the network over which traffic to the 1609 * specified host is to be routed 1610 * @param hostAddress the IP address of the host to which the route is 1611 * desired 1612 * @return {@code true} on success, {@code false} on failure 1613 */ 1614 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1615 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1616 1617 if (inetAddress == null) { 1618 return false; 1619 } 1620 1621 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1622 } 1623 1624 /** 1625 * Ensure that a network route exists to deliver traffic to the specified 1626 * host via the specified network interface. 1627 * @param networkType the type of the network over which traffic to the 1628 * specified host is to be routed 1629 * @param hostAddress the IP address of the host to which the route is 1630 * desired 1631 * @return {@code true} on success, {@code false} on failure 1632 */ 1633 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1634 String packageName) { 1635 enforceChangePermission(); 1636 if (mProtectedNetworks.contains(networkType)) { 1637 enforceConnectivityInternalPermission(); 1638 } 1639 boolean exempt; 1640 InetAddress addr; 1641 try { 1642 addr = InetAddress.getByAddress(hostAddress); 1643 } catch (UnknownHostException e) { 1644 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1645 return false; 1646 } 1647 // System apps may request routes bypassing the VPN to keep other networks working. 1648 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1649 exempt = true; 1650 } else { 1651 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1652 try { 1653 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1654 0); 1655 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1656 } catch (NameNotFoundException e) { 1657 throw new IllegalArgumentException("Failed to find calling package details", e); 1658 } 1659 } 1660 1661 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1662 // This can be either because the VPN's routes do not cover the destination or a 1663 // system application added an exemption that covers this destination. 1664 if (!exempt && isAddressUnderVpn(addr)) { 1665 return false; 1666 } 1667 1668 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1669 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1670 return false; 1671 } 1672 NetworkStateTracker tracker = mNetTrackers[networkType]; 1673 DetailedState netState = DetailedState.DISCONNECTED; 1674 if (tracker != null) { 1675 netState = tracker.getNetworkInfo().getDetailedState(); 1676 } 1677 1678 if ((netState != DetailedState.CONNECTED && 1679 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1680 tracker.isTeardownRequested()) { 1681 if (VDBG) { 1682 log("requestRouteToHostAddress on down network " 1683 + "(" + networkType + ") - dropped" 1684 + " tracker=" + tracker 1685 + " netState=" + netState 1686 + " isTeardownRequested=" 1687 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1688 } 1689 return false; 1690 } 1691 final long token = Binder.clearCallingIdentity(); 1692 try { 1693 LinkProperties lp = tracker.getLinkProperties(); 1694 boolean ok = addRouteToAddress(lp, addr, exempt, tracker.getNetwork().netId); 1695 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1696 return ok; 1697 } finally { 1698 Binder.restoreCallingIdentity(token); 1699 } 1700 } 1701 1702 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1703 boolean exempt, int netId) { 1704 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId); 1705 } 1706 1707 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1708 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId); 1709 } 1710 1711 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt, 1712 int netId) { 1713 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, netId); 1714 } 1715 1716 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr, int netId) { 1717 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT, netId); 1718 } 1719 1720 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1721 boolean toDefaultTable, boolean exempt, int netId) { 1722 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1723 if (bestRoute == null) { 1724 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1725 } else { 1726 String iface = bestRoute.getInterface(); 1727 if (bestRoute.getGateway().equals(addr)) { 1728 // if there is no better route, add the implied hostroute for our gateway 1729 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1730 } else { 1731 // if we will connect to this through another route, add a direct route 1732 // to it's gateway 1733 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1734 } 1735 } 1736 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId); 1737 } 1738 1739 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1740 boolean toDefaultTable, boolean exempt, int netId) { 1741 if ((lp == null) || (r == null)) { 1742 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1743 return false; 1744 } 1745 1746 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1747 loge("Error modifying route - too much recursion"); 1748 return false; 1749 } 1750 1751 String ifaceName = r.getInterface(); 1752 if(ifaceName == null) { 1753 loge("Error modifying route - no interface name"); 1754 return false; 1755 } 1756 if (r.hasGateway()) { 1757 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1758 if (bestRoute != null) { 1759 if (bestRoute.getGateway().equals(r.getGateway())) { 1760 // if there is no better route, add the implied hostroute for our gateway 1761 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1762 } else { 1763 // if we will connect to our gateway through another route, add a direct 1764 // route to it's gateway 1765 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1766 bestRoute.getGateway(), 1767 ifaceName); 1768 } 1769 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId); 1770 } 1771 } 1772 if (doAdd) { 1773 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1774 try { 1775 if (toDefaultTable) { 1776 synchronized (mRoutesLock) { 1777 // only track default table - only one apps can effect 1778 mAddedRoutes.add(r); 1779 mNetd.addRoute(netId, r); 1780 if (exempt) { 1781 LinkAddress dest = r.getDestination(); 1782 if (!mExemptAddresses.contains(dest)) { 1783 mNetd.setHostExemption(dest); 1784 mExemptAddresses.add(dest); 1785 } 1786 } 1787 } 1788 } else { 1789 mNetd.addRoute(netId, r); 1790 } 1791 } catch (Exception e) { 1792 // never crash - catch them all 1793 if (DBG) loge("Exception trying to add a route: " + e); 1794 return false; 1795 } 1796 } else { 1797 // if we remove this one and there are no more like it, then refcount==0 and 1798 // we can remove it from the table 1799 if (toDefaultTable) { 1800 synchronized (mRoutesLock) { 1801 mAddedRoutes.remove(r); 1802 if (mAddedRoutes.contains(r) == false) { 1803 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1804 try { 1805 mNetd.removeRoute(netId, r); 1806 LinkAddress dest = r.getDestination(); 1807 if (mExemptAddresses.contains(dest)) { 1808 mNetd.clearHostExemption(dest); 1809 mExemptAddresses.remove(dest); 1810 } 1811 } catch (Exception e) { 1812 // never crash - catch them all 1813 if (VDBG) loge("Exception trying to remove a route: " + e); 1814 return false; 1815 } 1816 } else { 1817 if (VDBG) log("not removing " + r + " as it's still in use"); 1818 } 1819 } 1820 } else { 1821 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1822 try { 1823 mNetd.removeRoute(netId, r); 1824 } catch (Exception e) { 1825 // never crash - catch them all 1826 if (VDBG) loge("Exception trying to remove a route: " + e); 1827 return false; 1828 } 1829 } 1830 } 1831 return true; 1832 } 1833 1834 /** 1835 * @see ConnectivityManager#getMobileDataEnabled() 1836 */ 1837 public boolean getMobileDataEnabled() { 1838 // TODO: This detail should probably be in DataConnectionTracker's 1839 // which is where we store the value and maybe make this 1840 // asynchronous. 1841 enforceAccessPermission(); 1842 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1843 Settings.Global.MOBILE_DATA, 1) == 1; 1844 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1845 return retVal; 1846 } 1847 1848 public void setDataDependency(int networkType, boolean met) { 1849 enforceConnectivityInternalPermission(); 1850 1851 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1852 (met ? ENABLED : DISABLED), networkType)); 1853 } 1854 1855 private void handleSetDependencyMet(int networkType, boolean met) { 1856 if (mNetTrackers[networkType] != null) { 1857 if (DBG) { 1858 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1859 } 1860 mNetTrackers[networkType].setDependencyMet(met); 1861 } 1862 } 1863 1864 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1865 @Override 1866 public void onUidRulesChanged(int uid, int uidRules) { 1867 // caller is NPMS, since we only register with them 1868 if (LOGD_RULES) { 1869 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1870 } 1871 1872 synchronized (mRulesLock) { 1873 // skip update when we've already applied rules 1874 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1875 if (oldRules == uidRules) return; 1876 1877 mUidRules.put(uid, uidRules); 1878 } 1879 1880 // TODO: notify UID when it has requested targeted updates 1881 } 1882 1883 @Override 1884 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1885 // caller is NPMS, since we only register with them 1886 if (LOGD_RULES) { 1887 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1888 } 1889 1890 synchronized (mRulesLock) { 1891 mMeteredIfaces.clear(); 1892 for (String iface : meteredIfaces) { 1893 mMeteredIfaces.add(iface); 1894 } 1895 } 1896 } 1897 1898 @Override 1899 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1900 // caller is NPMS, since we only register with them 1901 if (LOGD_RULES) { 1902 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1903 } 1904 1905 // kick off connectivity change broadcast for active network, since 1906 // global background policy change is radical. 1907 final int networkType = mActiveDefaultNetwork; 1908 if (isNetworkTypeValid(networkType)) { 1909 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1910 if (tracker != null) { 1911 final NetworkInfo info = tracker.getNetworkInfo(); 1912 if (info != null && info.isConnected()) { 1913 sendConnectedBroadcast(info); 1914 } 1915 } 1916 } 1917 } 1918 }; 1919 1920 /** 1921 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1922 */ 1923 public void setMobileDataEnabled(boolean enabled) { 1924 enforceChangePermission(); 1925 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1926 1927 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1928 (enabled ? ENABLED : DISABLED), 0)); 1929 } 1930 1931 private void handleSetMobileData(boolean enabled) { 1932 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1933 if (VDBG) { 1934 log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1935 } 1936 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled); 1937 } 1938 if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) { 1939 if (VDBG) { 1940 log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled); 1941 } 1942 mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled); 1943 } 1944 } 1945 1946 @Override 1947 public void setPolicyDataEnable(int networkType, boolean enabled) { 1948 // only someone like NPMS should only be calling us 1949 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1950 1951 mHandler.sendMessage(mHandler.obtainMessage( 1952 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1953 } 1954 1955 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1956 if (isNetworkTypeValid(networkType)) { 1957 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1958 if (tracker != null) { 1959 tracker.setPolicyDataEnable(enabled); 1960 } 1961 } 1962 } 1963 1964 private void enforceAccessPermission() { 1965 mContext.enforceCallingOrSelfPermission( 1966 android.Manifest.permission.ACCESS_NETWORK_STATE, 1967 "ConnectivityService"); 1968 } 1969 1970 private void enforceChangePermission() { 1971 mContext.enforceCallingOrSelfPermission( 1972 android.Manifest.permission.CHANGE_NETWORK_STATE, 1973 "ConnectivityService"); 1974 } 1975 1976 // TODO Make this a special check when it goes public 1977 private void enforceTetherChangePermission() { 1978 mContext.enforceCallingOrSelfPermission( 1979 android.Manifest.permission.CHANGE_NETWORK_STATE, 1980 "ConnectivityService"); 1981 } 1982 1983 private void enforceTetherAccessPermission() { 1984 mContext.enforceCallingOrSelfPermission( 1985 android.Manifest.permission.ACCESS_NETWORK_STATE, 1986 "ConnectivityService"); 1987 } 1988 1989 private void enforceConnectivityInternalPermission() { 1990 mContext.enforceCallingOrSelfPermission( 1991 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1992 "ConnectivityService"); 1993 } 1994 1995 private void enforceMarkNetworkSocketPermission() { 1996 //Media server special case 1997 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1998 return; 1999 } 2000 mContext.enforceCallingOrSelfPermission( 2001 android.Manifest.permission.MARK_NETWORK_SOCKET, 2002 "ConnectivityService"); 2003 } 2004 2005 /** 2006 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 2007 * network, we ignore it. If it is for the active network, we send out a 2008 * broadcast. But first, we check whether it might be possible to connect 2009 * to a different network. 2010 * @param info the {@code NetworkInfo} for the network 2011 */ 2012 private void handleDisconnect(NetworkInfo info) { 2013 2014 int prevNetType = info.getType(); 2015 2016 mNetTrackers[prevNetType].setTeardownRequested(false); 2017 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2018 2019 // Remove idletimer previously setup in {@code handleConnect} 2020 if (mNetConfigs[prevNetType].isDefault()) { 2021 removeDataActivityTracking(prevNetType); 2022 } 2023 2024 /* 2025 * If the disconnected network is not the active one, then don't report 2026 * this as a loss of connectivity. What probably happened is that we're 2027 * getting the disconnect for a network that we explicitly disabled 2028 * in accordance with network preference policies. 2029 */ 2030 if (!mNetConfigs[prevNetType].isDefault()) { 2031 List<Integer> pids = mNetRequestersPids[prevNetType]; 2032 for (Integer pid : pids) { 2033 // will remove them because the net's no longer connected 2034 // need to do this now as only now do we know the pids and 2035 // can properly null things that are no longer referenced. 2036 reassessPidDns(pid.intValue(), false); 2037 } 2038 } 2039 2040 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2041 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2042 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2043 if (info.isFailover()) { 2044 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2045 info.setFailover(false); 2046 } 2047 if (info.getReason() != null) { 2048 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2049 } 2050 if (info.getExtraInfo() != null) { 2051 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2052 info.getExtraInfo()); 2053 } 2054 2055 if (mNetConfigs[prevNetType].isDefault()) { 2056 tryFailover(prevNetType); 2057 if (mActiveDefaultNetwork != -1) { 2058 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2059 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2060 } else { 2061 mDefaultInetConditionPublished = 0; // we're not connected anymore 2062 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2063 } 2064 } 2065 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2066 2067 // Reset interface if no other connections are using the same interface 2068 boolean doReset = true; 2069 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2070 if (linkProperties != null) { 2071 String oldIface = linkProperties.getInterfaceName(); 2072 if (TextUtils.isEmpty(oldIface) == false) { 2073 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2074 if (networkStateTracker == null) continue; 2075 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2076 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2077 LinkProperties l = networkStateTracker.getLinkProperties(); 2078 if (l == null) continue; 2079 if (oldIface.equals(l.getInterfaceName())) { 2080 doReset = false; 2081 break; 2082 } 2083 } 2084 } 2085 } 2086 } 2087 2088 // do this before we broadcast the change 2089 handleConnectivityChange(prevNetType, doReset); 2090 2091 final Intent immediateIntent = new Intent(intent); 2092 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2093 sendStickyBroadcast(immediateIntent); 2094 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2095 /* 2096 * If the failover network is already connected, then immediately send 2097 * out a followup broadcast indicating successful failover 2098 */ 2099 if (mActiveDefaultNetwork != -1) { 2100 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2101 getConnectivityChangeDelay()); 2102 } 2103 try { 2104// mNetd.removeNetwork(thisNetId); 2105 } catch (Exception e) { 2106 loge("Exception removing network: " + e); 2107 } finally { 2108 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2109 } 2110 } 2111 2112 private void tryFailover(int prevNetType) { 2113 /* 2114 * If this is a default network, check if other defaults are available. 2115 * Try to reconnect on all available and let them hash it out when 2116 * more than one connects. 2117 */ 2118 if (mNetConfigs[prevNetType].isDefault()) { 2119 if (mActiveDefaultNetwork == prevNetType) { 2120 if (DBG) { 2121 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2122 } 2123 mActiveDefaultNetwork = -1; 2124 try { 2125 mNetd.clearDefaultNetId(); 2126 } catch (Exception e) { 2127 loge("Exception clearing default network :" + e); 2128 } 2129 } 2130 2131 // don't signal a reconnect for anything lower or equal priority than our 2132 // current connected default 2133 // TODO - don't filter by priority now - nice optimization but risky 2134// int currentPriority = -1; 2135// if (mActiveDefaultNetwork != -1) { 2136// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2137// } 2138 2139 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2140 if (checkType == prevNetType) continue; 2141 if (mNetConfigs[checkType] == null) continue; 2142 if (!mNetConfigs[checkType].isDefault()) continue; 2143 if (mNetTrackers[checkType] == null) continue; 2144 2145// Enabling the isAvailable() optimization caused mobile to not get 2146// selected if it was in the middle of error handling. Specifically 2147// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2148// would not be available and we wouldn't get connected to anything. 2149// So removing the isAvailable() optimization below for now. TODO: This 2150// optimization should work and we need to investigate why it doesn't work. 2151// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2152// complete before it is really complete. 2153 2154// if (!mNetTrackers[checkType].isAvailable()) continue; 2155 2156// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2157 2158 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2159 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2160 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2161 checkInfo.setFailover(true); 2162 checkTracker.reconnect(); 2163 } 2164 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2165 } 2166 } 2167 } 2168 2169 public void sendConnectedBroadcast(NetworkInfo info) { 2170 enforceConnectivityInternalPermission(); 2171 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2172 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2173 } 2174 2175 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2176 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2177 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2178 } 2179 2180 private void sendInetConditionBroadcast(NetworkInfo info) { 2181 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2182 } 2183 2184 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2185 if (mLockdownTracker != null) { 2186 info = mLockdownTracker.augmentNetworkInfo(info); 2187 } 2188 2189 Intent intent = new Intent(bcastType); 2190 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2191 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2192 if (info.isFailover()) { 2193 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2194 info.setFailover(false); 2195 } 2196 if (info.getReason() != null) { 2197 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2198 } 2199 if (info.getExtraInfo() != null) { 2200 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2201 info.getExtraInfo()); 2202 } 2203 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2204 return intent; 2205 } 2206 2207 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2208 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2209 } 2210 2211 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2212 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2213 } 2214 2215 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2216 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2217 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2218 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2219 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2220 final long ident = Binder.clearCallingIdentity(); 2221 try { 2222 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2223 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2224 } finally { 2225 Binder.restoreCallingIdentity(ident); 2226 } 2227 } 2228 2229 /** 2230 * Called when an attempt to fail over to another network has failed. 2231 * @param info the {@link NetworkInfo} for the failed network 2232 */ 2233 private void handleConnectionFailure(NetworkInfo info) { 2234 mNetTrackers[info.getType()].setTeardownRequested(false); 2235 2236 String reason = info.getReason(); 2237 String extraInfo = info.getExtraInfo(); 2238 2239 String reasonText; 2240 if (reason == null) { 2241 reasonText = "."; 2242 } else { 2243 reasonText = " (" + reason + ")."; 2244 } 2245 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 2246 2247 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2248 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2249 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2250 if (getActiveNetworkInfo() == null) { 2251 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2252 } 2253 if (reason != null) { 2254 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 2255 } 2256 if (extraInfo != null) { 2257 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 2258 } 2259 if (info.isFailover()) { 2260 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2261 info.setFailover(false); 2262 } 2263 2264 if (mNetConfigs[info.getType()].isDefault()) { 2265 tryFailover(info.getType()); 2266 if (mActiveDefaultNetwork != -1) { 2267 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2268 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2269 } else { 2270 mDefaultInetConditionPublished = 0; 2271 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2272 } 2273 } 2274 2275 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2276 2277 final Intent immediateIntent = new Intent(intent); 2278 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2279 sendStickyBroadcast(immediateIntent); 2280 sendStickyBroadcast(intent); 2281 /* 2282 * If the failover network is already connected, then immediately send 2283 * out a followup broadcast indicating successful failover 2284 */ 2285 if (mActiveDefaultNetwork != -1) { 2286 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 2287 } 2288 } 2289 2290 private void sendStickyBroadcast(Intent intent) { 2291 synchronized(this) { 2292 if (!mSystemReady) { 2293 mInitialBroadcast = new Intent(intent); 2294 } 2295 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2296 if (VDBG) { 2297 log("sendStickyBroadcast: action=" + intent.getAction()); 2298 } 2299 2300 final long ident = Binder.clearCallingIdentity(); 2301 try { 2302 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2303 } finally { 2304 Binder.restoreCallingIdentity(ident); 2305 } 2306 } 2307 } 2308 2309 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2310 if (delayMs <= 0) { 2311 sendStickyBroadcast(intent); 2312 } else { 2313 if (VDBG) { 2314 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2315 + intent.getAction()); 2316 } 2317 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2318 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2319 } 2320 } 2321 2322 void systemReady() { 2323 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2324 loadGlobalProxy(); 2325 2326 synchronized(this) { 2327 mSystemReady = true; 2328 if (mInitialBroadcast != null) { 2329 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2330 mInitialBroadcast = null; 2331 } 2332 } 2333 // load the global proxy at startup 2334 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2335 2336 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2337 // for user to unlock device. 2338 if (!updateLockdownVpn()) { 2339 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2340 mContext.registerReceiver(mUserPresentReceiver, filter); 2341 } 2342 } 2343 2344 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2345 @Override 2346 public void onReceive(Context context, Intent intent) { 2347 // Try creating lockdown tracker, since user present usually means 2348 // unlocked keystore. 2349 if (updateLockdownVpn()) { 2350 mContext.unregisterReceiver(this); 2351 } 2352 } 2353 }; 2354 2355 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2356 if (((type != mNetworkPreference) 2357 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2358 || (mNetworkPreference == mActiveDefaultNetwork)) { 2359 return false; 2360 } 2361 return true; 2362 } 2363 2364 private void handleConnect(NetworkInfo info) { 2365 final int newNetType = info.getType(); 2366 2367 // snapshot isFailover, because sendConnectedBroadcast() resets it 2368 boolean isFailover = info.isFailover(); 2369 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2370 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2371 2372 if (VDBG) { 2373 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2374 + " isFailover" + isFailover); 2375 } 2376 2377 // if this is a default net and other default is running 2378 // kill the one not preferred 2379 if (mNetConfigs[newNetType].isDefault()) { 2380 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2381 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2382 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2383 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2384 // tear down the other 2385 NetworkStateTracker otherNet = 2386 mNetTrackers[mActiveDefaultNetwork]; 2387 if (DBG) { 2388 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2389 " teardown"); 2390 } 2391 if (!teardown(otherNet)) { 2392 loge("Network declined teardown request"); 2393 teardown(thisNet); 2394 return; 2395 } 2396 } else { 2397 //TODO - remove 2398 loge("network teardown skipped due to net.teardownPolicy setting"); 2399 } 2400 } else { 2401 // don't accept this one 2402 if (VDBG) { 2403 log("Not broadcasting CONNECT_ACTION " + 2404 "to torn down network " + info.getTypeName()); 2405 } 2406 teardown(thisNet); 2407 return; 2408 } 2409 } 2410 int thisNetId = nextNetId(); 2411 thisNet.setNetId(thisNetId); 2412 try { 2413// mNetd.createNetwork(thisNetId, thisIface); 2414 } catch (Exception e) { 2415 loge("Exception creating network :" + e); 2416 teardown(thisNet); 2417 return; 2418 } 2419 setupDataActivityTracking(newNetType); 2420 synchronized (ConnectivityService.this) { 2421 // have a new default network, release the transition wakelock in a second 2422 // if it's held. The second pause is to allow apps to reconnect over the 2423 // new network 2424 if (mNetTransitionWakeLock.isHeld()) { 2425 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2426 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2427 mNetTransitionWakeLockSerialNumber, 0), 2428 1000); 2429 } 2430 } 2431 mActiveDefaultNetwork = newNetType; 2432 try { 2433 mNetd.setDefaultNetId(thisNetId); 2434 } catch (Exception e) { 2435 loge("Exception setting default network :" + e); 2436 } 2437 // this will cause us to come up initially as unconnected and switching 2438 // to connected after our normal pause unless somebody reports us as reall 2439 // disconnected 2440 mDefaultInetConditionPublished = 0; 2441 mDefaultConnectionSequence++; 2442 mInetConditionChangeInFlight = false; 2443 // Don't do this - if we never sign in stay, grey 2444 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2445 updateNetworkSettings(thisNet); 2446 } else { 2447 int thisNetId = nextNetId(); 2448 thisNet.setNetId(thisNetId); 2449 try { 2450// mNetd.createNetwork(thisNetId, thisIface); 2451 } catch (Exception e) { 2452 loge("Exception creating network :" + e); 2453 teardown(thisNet); 2454 return; 2455 } 2456 } 2457 thisNet.setTeardownRequested(false); 2458 updateMtuSizeSettings(thisNet); 2459 handleConnectivityChange(newNetType, false); 2460 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2461 2462 // notify battery stats service about this network 2463 if (thisIface != null) { 2464 try { 2465 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2466 } catch (RemoteException e) { 2467 // ignored; service lives in system_server 2468 } 2469 } 2470 } 2471 2472 /** @hide */ 2473 @Override 2474 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2475 enforceConnectivityInternalPermission(); 2476 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2477 mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2478 } 2479 2480 /** 2481 * Setup data activity tracking for the given network interface. 2482 * 2483 * Every {@code setupDataActivityTracking} should be paired with a 2484 * {@link #removeDataActivityTracking} for cleanup. 2485 */ 2486 private void setupDataActivityTracking(int type) { 2487 final NetworkStateTracker thisNet = mNetTrackers[type]; 2488 final String iface = thisNet.getLinkProperties().getInterfaceName(); 2489 2490 final int timeout; 2491 2492 if (ConnectivityManager.isNetworkTypeMobile(type)) { 2493 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2494 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2495 5); 2496 // Canonicalize mobile network type 2497 type = ConnectivityManager.TYPE_MOBILE; 2498 } else if (ConnectivityManager.TYPE_WIFI == type) { 2499 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2500 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2501 0); 2502 } else { 2503 // do not track any other networks 2504 timeout = 0; 2505 } 2506 2507 if (timeout > 0 && iface != null) { 2508 try { 2509 mNetd.addIdleTimer(iface, timeout, type); 2510 } catch (Exception e) { 2511 // You shall not crash! 2512 loge("Exception in setupDataActivityTracking " + e); 2513 } 2514 } 2515 } 2516 2517 /** 2518 * Remove data activity tracking when network disconnects. 2519 */ 2520 private void removeDataActivityTracking(int type) { 2521 final NetworkStateTracker net = mNetTrackers[type]; 2522 final String iface = net.getLinkProperties().getInterfaceName(); 2523 2524 if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) || 2525 ConnectivityManager.TYPE_WIFI == type)) { 2526 try { 2527 // the call fails silently if no idletimer setup for this interface 2528 mNetd.removeIdleTimer(iface); 2529 } catch (Exception e) { 2530 loge("Exception in removeDataActivityTracking " + e); 2531 } 2532 } 2533 } 2534 2535 /** 2536 * After a change in the connectivity state of a network. We're mainly 2537 * concerned with making sure that the list of DNS servers is set up 2538 * according to which networks are connected, and ensuring that the 2539 * right routing table entries exist. 2540 */ 2541 private void handleConnectivityChange(int netType, boolean doReset) { 2542 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2543 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2544 if (VDBG) { 2545 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2546 + " resetMask=" + resetMask); 2547 } 2548 2549 /* 2550 * If a non-default network is enabled, add the host routes that 2551 * will allow it's DNS servers to be accessed. 2552 */ 2553 handleDnsConfigurationChange(netType); 2554 2555 LinkProperties curLp = mCurrentLinkProperties[netType]; 2556 LinkProperties newLp = null; 2557 2558 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2559 newLp = mNetTrackers[netType].getLinkProperties(); 2560 if (VDBG) { 2561 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2562 " doReset=" + doReset + " resetMask=" + resetMask + 2563 "\n curLp=" + curLp + 2564 "\n newLp=" + newLp); 2565 } 2566 2567 if (curLp != null) { 2568 if (curLp.isIdenticalInterfaceName(newLp)) { 2569 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2570 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2571 for (LinkAddress linkAddr : car.removed) { 2572 if (linkAddr.getAddress() instanceof Inet4Address) { 2573 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2574 } 2575 if (linkAddr.getAddress() instanceof Inet6Address) { 2576 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2577 } 2578 } 2579 if (DBG) { 2580 log("handleConnectivityChange: addresses changed" + 2581 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2582 "\n car=" + car); 2583 } 2584 } else { 2585 if (VDBG) { 2586 log("handleConnectivityChange: addresses are the same reset per" + 2587 " doReset linkProperty[" + netType + "]:" + 2588 " resetMask=" + resetMask); 2589 } 2590 } 2591 } else { 2592 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2593 if (DBG) { 2594 log("handleConnectivityChange: interface not not equivalent reset both" + 2595 " linkProperty[" + netType + "]:" + 2596 " resetMask=" + resetMask); 2597 } 2598 } 2599 } 2600 if (mNetConfigs[netType].isDefault()) { 2601 handleApplyDefaultProxy(newLp.getHttpProxy()); 2602 } 2603 } else { 2604 if (VDBG) { 2605 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2606 " doReset=" + doReset + " resetMask=" + resetMask + 2607 "\n curLp=" + curLp + 2608 "\n newLp= null"); 2609 } 2610 } 2611 mCurrentLinkProperties[netType] = newLp; 2612 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2613 mNetTrackers[netType].getNetwork().netId); 2614 2615 if (resetMask != 0 || resetDns) { 2616 if (VDBG) log("handleConnectivityChange: resetting"); 2617 if (curLp != null) { 2618 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2619 for (String iface : curLp.getAllInterfaceNames()) { 2620 if (TextUtils.isEmpty(iface) == false) { 2621 if (resetMask != 0) { 2622 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2623 NetworkUtils.resetConnections(iface, resetMask); 2624 2625 // Tell VPN the interface is down. It is a temporary 2626 // but effective fix to make VPN aware of the change. 2627 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2628 synchronized(mVpns) { 2629 for (int i = 0; i < mVpns.size(); i++) { 2630 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2631 } 2632 } 2633 } 2634 } 2635 } else { 2636 loge("Can't reset connection for type "+netType); 2637 } 2638 } 2639 if (resetDns) { 2640 flushVmDnsCache(); 2641 if (VDBG) log("resetting DNS cache for type " + netType); 2642 try { 2643 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2644 } catch (Exception e) { 2645 // never crash - catch them all 2646 if (DBG) loge("Exception resetting dns cache: " + e); 2647 } 2648 } 2649 } 2650 } 2651 2652 // Update 464xlat state. 2653 NetworkStateTracker tracker = mNetTrackers[netType]; 2654 if (mClat.requiresClat(netType, tracker)) { 2655 2656 // If the connection was previously using clat, but is not using it now, stop the clat 2657 // daemon. Normally, this happens automatically when the connection disconnects, but if 2658 // the disconnect is not reported, or if the connection's LinkProperties changed for 2659 // some other reason (e.g., handoff changes the IP addresses on the link), it would 2660 // still be running. If it's not running, then stopping it is a no-op. 2661 if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) { 2662 mClat.stopClat(); 2663 } 2664 // If the link requires clat to be running, then start the daemon now. 2665 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2666 mClat.startClat(tracker); 2667 } else { 2668 mClat.stopClat(); 2669 } 2670 } 2671 2672 // TODO: Temporary notifying upstread change to Tethering. 2673 // @see bug/4455071 2674 /** Notify TetheringService if interface name has been changed. */ 2675 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2676 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2677 if (isTetheringSupported()) { 2678 mTethering.handleTetherIfaceChange(); 2679 } 2680 } 2681 } 2682 2683 /** 2684 * Add and remove routes using the old properties (null if not previously connected), 2685 * new properties (null if becoming disconnected). May even be double null, which 2686 * is a noop. 2687 * Uses isLinkDefault to determine if default routes should be set or conversely if 2688 * host routes should be set to the dns servers 2689 * returns a boolean indicating the routes changed 2690 */ 2691 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2692 boolean isLinkDefault, boolean exempt, int netId) { 2693 Collection<RouteInfo> routesToAdd = null; 2694 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2695 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2696 if (curLp != null) { 2697 // check for the delta between the current set and the new 2698 routeDiff = curLp.compareAllRoutes(newLp); 2699 dnsDiff = curLp.compareDnses(newLp); 2700 } else if (newLp != null) { 2701 routeDiff.added = newLp.getAllRoutes(); 2702 dnsDiff.added = newLp.getDnses(); 2703 } 2704 2705 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2706 2707 for (RouteInfo r : routeDiff.removed) { 2708 if (isLinkDefault || ! r.isDefaultRoute()) { 2709 if (VDBG) log("updateRoutes: default remove route r=" + r); 2710 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2711 } 2712 if (isLinkDefault == false) { 2713 // remove from a secondary route table 2714 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2715 } 2716 } 2717 2718 for (RouteInfo r : routeDiff.added) { 2719 if (isLinkDefault || ! r.isDefaultRoute()) { 2720 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2721 } else { 2722 // add to a secondary route table 2723 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2724 2725 // many radios add a default route even when we don't want one. 2726 // remove the default route unless somebody else has asked for it 2727 String ifaceName = newLp.getInterfaceName(); 2728 synchronized (mRoutesLock) { 2729 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2730 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2731 try { 2732 mNetd.removeRoute(netId, r); 2733 } catch (Exception e) { 2734 // never crash - catch them all 2735 if (DBG) loge("Exception trying to remove a route: " + e); 2736 } 2737 } 2738 } 2739 } 2740 } 2741 2742 return routesChanged; 2743 } 2744 2745 /** 2746 * Reads the network specific MTU size from reources. 2747 * and set it on it's iface. 2748 */ 2749 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2750 final String iface = nt.getLinkProperties().getInterfaceName(); 2751 final int mtu = nt.getLinkProperties().getMtu(); 2752 2753 if (mtu < 68 || mtu > 10000) { 2754 loge("Unexpected mtu value: " + mtu + ", " + nt); 2755 return; 2756 } 2757 2758 try { 2759 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2760 mNetd.setMtu(iface, mtu); 2761 } catch (Exception e) { 2762 Slog.e(TAG, "exception in setMtu()" + e); 2763 } 2764 } 2765 2766 /** 2767 * Reads the network specific TCP buffer sizes from SystemProperties 2768 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2769 * wide use 2770 */ 2771 private void updateNetworkSettings(NetworkStateTracker nt) { 2772 String key = nt.getTcpBufferSizesPropName(); 2773 String bufferSizes = key == null ? null : SystemProperties.get(key); 2774 2775 if (TextUtils.isEmpty(bufferSizes)) { 2776 if (VDBG) log(key + " not found in system properties. Using defaults"); 2777 2778 // Setting to default values so we won't be stuck to previous values 2779 key = "net.tcp.buffersize.default"; 2780 bufferSizes = SystemProperties.get(key); 2781 } 2782 2783 // Set values in kernel 2784 if (bufferSizes.length() != 0) { 2785 if (VDBG) { 2786 log("Setting TCP values: [" + bufferSizes 2787 + "] which comes from [" + key + "]"); 2788 } 2789 setBufferSize(bufferSizes); 2790 } 2791 2792 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2793 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2794 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2795 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2796 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2797 if (rwndValue != 0) { 2798 SystemProperties.set(sysctlKey, rwndValue.toString()); 2799 } 2800 } 2801 2802 /** 2803 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2804 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2805 * 2806 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2807 * writeMin, writeInitial, writeMax" 2808 */ 2809 private void setBufferSize(String bufferSizes) { 2810 try { 2811 String[] values = bufferSizes.split(","); 2812 2813 if (values.length == 6) { 2814 final String prefix = "/sys/kernel/ipv4/tcp_"; 2815 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2816 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2817 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2818 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2819 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2820 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2821 } else { 2822 loge("Invalid buffersize string: " + bufferSizes); 2823 } 2824 } catch (IOException e) { 2825 loge("Can't set tcp buffer sizes:" + e); 2826 } 2827 } 2828 2829 /** 2830 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2831 * on the highest priority active net which this process requested. 2832 * If there aren't any, clear it out 2833 */ 2834 private void reassessPidDns(int pid, boolean doBump) 2835 { 2836 if (VDBG) log("reassessPidDns for pid " + pid); 2837 Integer myPid = new Integer(pid); 2838 for(int i : mPriorityList) { 2839 if (mNetConfigs[i].isDefault()) { 2840 continue; 2841 } 2842 NetworkStateTracker nt = mNetTrackers[i]; 2843 if (nt.getNetworkInfo().isConnected() && 2844 !nt.isTeardownRequested()) { 2845 LinkProperties p = nt.getLinkProperties(); 2846 if (p == null) continue; 2847 if (mNetRequestersPids[i].contains(myPid)) { 2848 try { 2849 // TODO: Reimplement this via local variable in bionic. 2850 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2851 } catch (Exception e) { 2852 Slog.e(TAG, "exception reasseses pid dns: " + e); 2853 } 2854 return; 2855 } 2856 } 2857 } 2858 // nothing found - delete 2859 try { 2860 // TODO: Reimplement this via local variable in bionic. 2861 // mNetd.clearDnsNetworkForPid(pid); 2862 } catch (Exception e) { 2863 Slog.e(TAG, "exception clear interface from pid: " + e); 2864 } 2865 } 2866 2867 private void flushVmDnsCache() { 2868 /* 2869 * Tell the VMs to toss their DNS caches 2870 */ 2871 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2872 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2873 /* 2874 * Connectivity events can happen before boot has completed ... 2875 */ 2876 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2877 final long ident = Binder.clearCallingIdentity(); 2878 try { 2879 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2880 } finally { 2881 Binder.restoreCallingIdentity(ident); 2882 } 2883 } 2884 2885 // Caller must grab mDnsLock. 2886 private void updateDnsLocked(String network, int netId, 2887 Collection<InetAddress> dnses, String domains) { 2888 int last = 0; 2889 if (dnses.size() == 0 && mDefaultDns != null) { 2890 dnses = new ArrayList(); 2891 dnses.add(mDefaultDns); 2892 if (DBG) { 2893 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2894 } 2895 } 2896 2897 try { 2898 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2899 2900 for (InetAddress dns : dnses) { 2901 ++last; 2902 String key = "net.dns" + last; 2903 String value = dns.getHostAddress(); 2904 SystemProperties.set(key, value); 2905 } 2906 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2907 String key = "net.dns" + i; 2908 SystemProperties.set(key, ""); 2909 } 2910 mNumDnsEntries = last; 2911 } catch (Exception e) { 2912 loge("exception setting default dns interface: " + e); 2913 } 2914 } 2915 2916 private void handleDnsConfigurationChange(int netType) { 2917 // add default net's dns entries 2918 NetworkStateTracker nt = mNetTrackers[netType]; 2919 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2920 LinkProperties p = nt.getLinkProperties(); 2921 if (p == null) return; 2922 Collection<InetAddress> dnses = p.getDnses(); 2923 int netId = nt.getNetwork().netId; 2924 if (mNetConfigs[netType].isDefault()) { 2925 String network = nt.getNetworkInfo().getTypeName(); 2926 synchronized (mDnsLock) { 2927 updateDnsLocked(network, netId, dnses, p.getDomains()); 2928 } 2929 } else { 2930 try { 2931 mNetd.setDnsServersForNetwork(netId, 2932 NetworkUtils.makeStrings(dnses), p.getDomains()); 2933 } catch (Exception e) { 2934 if (DBG) loge("exception setting dns servers: " + e); 2935 } 2936 // set per-pid dns for attached secondary nets 2937 List<Integer> pids = mNetRequestersPids[netType]; 2938 for (Integer pid : pids) { 2939 try { 2940 // TODO: Reimplement this via local variable in bionic. 2941 // mNetd.setDnsNetworkForPid(netId, pid); 2942 } catch (Exception e) { 2943 Slog.e(TAG, "exception setting interface for pid: " + e); 2944 } 2945 } 2946 } 2947 flushVmDnsCache(); 2948 } 2949 } 2950 2951 private int getRestoreDefaultNetworkDelay(int networkType) { 2952 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2953 NETWORK_RESTORE_DELAY_PROP_NAME); 2954 if(restoreDefaultNetworkDelayStr != null && 2955 restoreDefaultNetworkDelayStr.length() != 0) { 2956 try { 2957 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2958 } catch (NumberFormatException e) { 2959 } 2960 } 2961 // if the system property isn't set, use the value for the apn type 2962 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2963 2964 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2965 (mNetConfigs[networkType] != null)) { 2966 ret = mNetConfigs[networkType].restoreTime; 2967 } 2968 return ret; 2969 } 2970 2971 @Override 2972 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2973 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2974 if (mContext.checkCallingOrSelfPermission( 2975 android.Manifest.permission.DUMP) 2976 != PackageManager.PERMISSION_GRANTED) { 2977 pw.println("Permission Denial: can't dump ConnectivityService " + 2978 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2979 Binder.getCallingUid()); 2980 return; 2981 } 2982 2983 // TODO: add locking to get atomic snapshot 2984 pw.println(); 2985 for (int i = 0; i < mNetTrackers.length; i++) { 2986 final NetworkStateTracker nst = mNetTrackers[i]; 2987 if (nst != null) { 2988 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 2989 pw.increaseIndent(); 2990 if (nst.getNetworkInfo().isConnected()) { 2991 pw.println("Active network: " + nst.getNetworkInfo(). 2992 getTypeName()); 2993 } 2994 pw.println(nst.getNetworkInfo()); 2995 pw.println(nst.getLinkProperties()); 2996 pw.println(nst); 2997 pw.println(); 2998 pw.decreaseIndent(); 2999 } 3000 } 3001 3002 pw.print("Active default network: "); pw.println(getNetworkTypeName(mActiveDefaultNetwork)); 3003 pw.println(); 3004 3005 pw.println("Network Requester Pids:"); 3006 pw.increaseIndent(); 3007 for (int net : mPriorityList) { 3008 String pidString = net + ": "; 3009 for (Integer pid : mNetRequestersPids[net]) { 3010 pidString = pidString + pid.toString() + ", "; 3011 } 3012 pw.println(pidString); 3013 } 3014 pw.println(); 3015 pw.decreaseIndent(); 3016 3017 pw.println("FeatureUsers:"); 3018 pw.increaseIndent(); 3019 for (Object requester : mFeatureUsers) { 3020 pw.println(requester.toString()); 3021 } 3022 pw.println(); 3023 pw.decreaseIndent(); 3024 3025 synchronized (this) { 3026 pw.println("NetworkTranstionWakeLock is currently " + 3027 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3028 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3029 } 3030 pw.println(); 3031 3032 mTethering.dump(fd, pw, args); 3033 3034 if (mInetLog != null) { 3035 pw.println(); 3036 pw.println("Inet condition reports:"); 3037 pw.increaseIndent(); 3038 for(int i = 0; i < mInetLog.size(); i++) { 3039 pw.println(mInetLog.get(i)); 3040 } 3041 pw.decreaseIndent(); 3042 } 3043 } 3044 3045 // must be stateless - things change under us. 3046 private class NetworkStateTrackerHandler extends Handler { 3047 public NetworkStateTrackerHandler(Looper looper) { 3048 super(looper); 3049 } 3050 3051 @Override 3052 public void handleMessage(Message msg) { 3053 NetworkInfo info; 3054 switch (msg.what) { 3055 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3056 AsyncChannel ac = (AsyncChannel) msg.obj; 3057 if (mNetworkFactories.contains(ac)) { 3058 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3059 if (VDBG) log("NetworkFactory connected"); 3060 for (int i = 0; i < mNetworkRequests.size(); i++) { 3061 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, 3062 mNetworkRequests.valueAt(i)); 3063 } 3064 } else { 3065 loge("Error connecting NetworkFactory"); 3066 mNetworkFactories.remove((AsyncChannel) msg.obj); 3067 } 3068 } 3069 break; 3070 } 3071 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3072 info = (NetworkInfo) msg.obj; 3073 NetworkInfo.State state = info.getState(); 3074 3075 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3076 (state == NetworkInfo.State.DISCONNECTED) || 3077 (state == NetworkInfo.State.SUSPENDED)) { 3078 log("ConnectivityChange for " + 3079 info.getTypeName() + ": " + 3080 state + "/" + info.getDetailedState()); 3081 } 3082 3083 // Since mobile has the notion of a network/apn that can be used for 3084 // provisioning we need to check every time we're connected as 3085 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3086 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3087 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3088 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3089 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3090 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3091 Settings.Global.DEVICE_PROVISIONED, 0)) 3092 && (((state == NetworkInfo.State.CONNECTED) 3093 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3094 || info.isConnectedToProvisioningNetwork())) { 3095 log("ConnectivityChange checkMobileProvisioning for" 3096 + " TYPE_MOBILE or ProvisioningNetwork"); 3097 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3098 } 3099 3100 EventLogTags.writeConnectivityStateChanged( 3101 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3102 3103 if (info.getDetailedState() == 3104 NetworkInfo.DetailedState.FAILED) { 3105 handleConnectionFailure(info); 3106 } else if (info.isConnectedToProvisioningNetwork()) { 3107 /** 3108 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3109 * for now its an in between network, its a network that 3110 * is actually a default network but we don't want it to be 3111 * announced as such to keep background applications from 3112 * trying to use it. It turns out that some still try so we 3113 * take the additional step of clearing any default routes 3114 * to the link that may have incorrectly setup by the lower 3115 * levels. 3116 */ 3117 LinkProperties lp = getLinkProperties(info.getType()); 3118 if (DBG) { 3119 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3120 } 3121 3122 // Clear any default routes setup by the radio so 3123 // any activity by applications trying to use this 3124 // connection will fail until the provisioning network 3125 // is enabled. 3126 for (RouteInfo r : lp.getRoutes()) { 3127 removeRoute(lp, r, TO_DEFAULT_TABLE, 3128 mNetTrackers[info.getType()].getNetwork().netId); 3129 } 3130 } else if (state == NetworkInfo.State.DISCONNECTED) { 3131 handleDisconnect(info); 3132 } else if (state == NetworkInfo.State.SUSPENDED) { 3133 // TODO: need to think this over. 3134 // the logic here is, handle SUSPENDED the same as 3135 // DISCONNECTED. The only difference being we are 3136 // broadcasting an intent with NetworkInfo that's 3137 // suspended. This allows the applications an 3138 // opportunity to handle DISCONNECTED and SUSPENDED 3139 // differently, or not. 3140 handleDisconnect(info); 3141 } else if (state == NetworkInfo.State.CONNECTED) { 3142 handleConnect(info); 3143 } 3144 if (mLockdownTracker != null) { 3145 mLockdownTracker.onNetworkInfoChanged(info); 3146 } 3147 break; 3148 } 3149 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3150 info = (NetworkInfo) msg.obj; 3151 // TODO: Temporary allowing network configuration 3152 // change not resetting sockets. 3153 // @see bug/4455071 3154 handleConnectivityChange(info.getType(), false); 3155 break; 3156 } 3157 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3158 info = (NetworkInfo) msg.obj; 3159 int type = info.getType(); 3160 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3161 break; 3162 } 3163 } 3164 } 3165 } 3166 3167 private class InternalHandler extends Handler { 3168 public InternalHandler(Looper looper) { 3169 super(looper); 3170 } 3171 3172 @Override 3173 public void handleMessage(Message msg) { 3174 NetworkInfo info; 3175 switch (msg.what) { 3176 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3177 String causedBy = null; 3178 synchronized (ConnectivityService.this) { 3179 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3180 mNetTransitionWakeLock.isHeld()) { 3181 mNetTransitionWakeLock.release(); 3182 causedBy = mNetTransitionWakeLockCausedBy; 3183 } 3184 } 3185 if (causedBy != null) { 3186 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3187 } 3188 break; 3189 } 3190 case EVENT_RESTORE_DEFAULT_NETWORK: { 3191 FeatureUser u = (FeatureUser)msg.obj; 3192 u.expire(); 3193 break; 3194 } 3195 case EVENT_INET_CONDITION_CHANGE: { 3196 int netType = msg.arg1; 3197 int condition = msg.arg2; 3198 handleInetConditionChange(netType, condition); 3199 break; 3200 } 3201 case EVENT_INET_CONDITION_HOLD_END: { 3202 int netType = msg.arg1; 3203 int sequence = msg.arg2; 3204 handleInetConditionHoldEnd(netType, sequence); 3205 break; 3206 } 3207 case EVENT_SET_NETWORK_PREFERENCE: { 3208 int preference = msg.arg1; 3209 handleSetNetworkPreference(preference); 3210 break; 3211 } 3212 case EVENT_SET_MOBILE_DATA: { 3213 boolean enabled = (msg.arg1 == ENABLED); 3214 handleSetMobileData(enabled); 3215 break; 3216 } 3217 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3218 handleDeprecatedGlobalHttpProxy(); 3219 break; 3220 } 3221 case EVENT_SET_DEPENDENCY_MET: { 3222 boolean met = (msg.arg1 == ENABLED); 3223 handleSetDependencyMet(msg.arg2, met); 3224 break; 3225 } 3226 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3227 Intent intent = (Intent)msg.obj; 3228 sendStickyBroadcast(intent); 3229 break; 3230 } 3231 case EVENT_SET_POLICY_DATA_ENABLE: { 3232 final int networkType = msg.arg1; 3233 final boolean enabled = msg.arg2 == ENABLED; 3234 handleSetPolicyDataEnable(networkType, enabled); 3235 break; 3236 } 3237 case EVENT_VPN_STATE_CHANGED: { 3238 if (mLockdownTracker != null) { 3239 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3240 } 3241 break; 3242 } 3243 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3244 int tag = mEnableFailFastMobileDataTag.get(); 3245 if (msg.arg1 == tag) { 3246 MobileDataStateTracker mobileDst = 3247 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3248 if (mobileDst != null) { 3249 mobileDst.setEnableFailFastMobileData(msg.arg2); 3250 } 3251 } else { 3252 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3253 + " != tag:" + tag); 3254 } 3255 break; 3256 } 3257 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3258 handleNetworkSamplingTimeout(); 3259 break; 3260 } 3261 case EVENT_PROXY_HAS_CHANGED: { 3262 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3263 break; 3264 } 3265 case EVENT_REGISTER_NETWORK_FACTORY: { 3266 handleRegisterNetworkFactory((Messenger)msg.obj); 3267 break; 3268 } 3269 } 3270 } 3271 } 3272 3273 // javadoc from interface 3274 public int tether(String iface) { 3275 enforceTetherChangePermission(); 3276 3277 if (isTetheringSupported()) { 3278 return mTethering.tether(iface); 3279 } else { 3280 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3281 } 3282 } 3283 3284 // javadoc from interface 3285 public int untether(String iface) { 3286 enforceTetherChangePermission(); 3287 3288 if (isTetheringSupported()) { 3289 return mTethering.untether(iface); 3290 } else { 3291 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3292 } 3293 } 3294 3295 // javadoc from interface 3296 public int getLastTetherError(String iface) { 3297 enforceTetherAccessPermission(); 3298 3299 if (isTetheringSupported()) { 3300 return mTethering.getLastTetherError(iface); 3301 } else { 3302 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3303 } 3304 } 3305 3306 // TODO - proper iface API for selection by property, inspection, etc 3307 public String[] getTetherableUsbRegexs() { 3308 enforceTetherAccessPermission(); 3309 if (isTetheringSupported()) { 3310 return mTethering.getTetherableUsbRegexs(); 3311 } else { 3312 return new String[0]; 3313 } 3314 } 3315 3316 public String[] getTetherableWifiRegexs() { 3317 enforceTetherAccessPermission(); 3318 if (isTetheringSupported()) { 3319 return mTethering.getTetherableWifiRegexs(); 3320 } else { 3321 return new String[0]; 3322 } 3323 } 3324 3325 public String[] getTetherableBluetoothRegexs() { 3326 enforceTetherAccessPermission(); 3327 if (isTetheringSupported()) { 3328 return mTethering.getTetherableBluetoothRegexs(); 3329 } else { 3330 return new String[0]; 3331 } 3332 } 3333 3334 public int setUsbTethering(boolean enable) { 3335 enforceTetherChangePermission(); 3336 if (isTetheringSupported()) { 3337 return mTethering.setUsbTethering(enable); 3338 } else { 3339 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3340 } 3341 } 3342 3343 // TODO - move iface listing, queries, etc to new module 3344 // javadoc from interface 3345 public String[] getTetherableIfaces() { 3346 enforceTetherAccessPermission(); 3347 return mTethering.getTetherableIfaces(); 3348 } 3349 3350 public String[] getTetheredIfaces() { 3351 enforceTetherAccessPermission(); 3352 return mTethering.getTetheredIfaces(); 3353 } 3354 3355 public String[] getTetheringErroredIfaces() { 3356 enforceTetherAccessPermission(); 3357 return mTethering.getErroredIfaces(); 3358 } 3359 3360 // if ro.tether.denied = true we default to no tethering 3361 // gservices could set the secure setting to 1 though to enable it on a build where it 3362 // had previously been turned off. 3363 public boolean isTetheringSupported() { 3364 enforceTetherAccessPermission(); 3365 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3366 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3367 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3368 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3369 mTethering.getTetherableWifiRegexs().length != 0 || 3370 mTethering.getTetherableBluetoothRegexs().length != 0) && 3371 mTethering.getUpstreamIfaceTypes().length != 0); 3372 } 3373 3374 // An API NetworkStateTrackers can call when they lose their network. 3375 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3376 // whichever happens first. The timer is started by the first caller and not 3377 // restarted by subsequent callers. 3378 public void requestNetworkTransitionWakelock(String forWhom) { 3379 enforceConnectivityInternalPermission(); 3380 synchronized (this) { 3381 if (mNetTransitionWakeLock.isHeld()) return; 3382 mNetTransitionWakeLockSerialNumber++; 3383 mNetTransitionWakeLock.acquire(); 3384 mNetTransitionWakeLockCausedBy = forWhom; 3385 } 3386 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3387 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3388 mNetTransitionWakeLockSerialNumber, 0), 3389 mNetTransitionWakeLockTimeout); 3390 return; 3391 } 3392 3393 // 100 percent is full good, 0 is full bad. 3394 public void reportInetCondition(int networkType, int percentage) { 3395 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3396 mContext.enforceCallingOrSelfPermission( 3397 android.Manifest.permission.STATUS_BAR, 3398 "ConnectivityService"); 3399 3400 if (DBG) { 3401 int pid = getCallingPid(); 3402 int uid = getCallingUid(); 3403 String s = pid + "(" + uid + ") reports inet is " + 3404 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3405 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3406 mInetLog.add(s); 3407 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3408 mInetLog.remove(0); 3409 } 3410 } 3411 mHandler.sendMessage(mHandler.obtainMessage( 3412 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3413 } 3414 3415 private void handleInetConditionChange(int netType, int condition) { 3416 if (mActiveDefaultNetwork == -1) { 3417 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3418 return; 3419 } 3420 if (mActiveDefaultNetwork != netType) { 3421 if (DBG) log("handleInetConditionChange: net=" + netType + 3422 " != default=" + mActiveDefaultNetwork + " - ignore"); 3423 return; 3424 } 3425 if (VDBG) { 3426 log("handleInetConditionChange: net=" + 3427 netType + ", condition=" + condition + 3428 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3429 } 3430 mDefaultInetCondition = condition; 3431 int delay; 3432 if (mInetConditionChangeInFlight == false) { 3433 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3434 // setup a new hold to debounce this 3435 if (mDefaultInetCondition > 50) { 3436 delay = Settings.Global.getInt(mContext.getContentResolver(), 3437 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3438 } else { 3439 delay = Settings.Global.getInt(mContext.getContentResolver(), 3440 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3441 } 3442 mInetConditionChangeInFlight = true; 3443 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3444 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3445 } else { 3446 // we've set the new condition, when this hold ends that will get picked up 3447 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3448 } 3449 } 3450 3451 private void handleInetConditionHoldEnd(int netType, int sequence) { 3452 if (DBG) { 3453 log("handleInetConditionHoldEnd: net=" + netType + 3454 ", condition=" + mDefaultInetCondition + 3455 ", published condition=" + mDefaultInetConditionPublished); 3456 } 3457 mInetConditionChangeInFlight = false; 3458 3459 if (mActiveDefaultNetwork == -1) { 3460 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3461 return; 3462 } 3463 if (mDefaultConnectionSequence != sequence) { 3464 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3465 return; 3466 } 3467 // TODO: Figure out why this optimization sometimes causes a 3468 // change in mDefaultInetCondition to be missed and the 3469 // UI to not be updated. 3470 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3471 // if (DBG) log("no change in condition - aborting"); 3472 // return; 3473 //} 3474 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3475 if (networkInfo.isConnected() == false) { 3476 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3477 return; 3478 } 3479 mDefaultInetConditionPublished = mDefaultInetCondition; 3480 sendInetConditionBroadcast(networkInfo); 3481 return; 3482 } 3483 3484 public ProxyInfo getProxy() { 3485 // this information is already available as a world read/writable jvm property 3486 // so this API change wouldn't have a benifit. It also breaks the passing 3487 // of proxy info to all the JVMs. 3488 // enforceAccessPermission(); 3489 synchronized (mProxyLock) { 3490 ProxyInfo ret = mGlobalProxy; 3491 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3492 return ret; 3493 } 3494 } 3495 3496 public void setGlobalProxy(ProxyInfo proxyProperties) { 3497 enforceConnectivityInternalPermission(); 3498 3499 synchronized (mProxyLock) { 3500 if (proxyProperties == mGlobalProxy) return; 3501 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3502 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3503 3504 String host = ""; 3505 int port = 0; 3506 String exclList = ""; 3507 String pacFileUrl = ""; 3508 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3509 (proxyProperties.getPacFileUrl() != null))) { 3510 if (!proxyProperties.isValid()) { 3511 if (DBG) 3512 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3513 return; 3514 } 3515 mGlobalProxy = new ProxyInfo(proxyProperties); 3516 host = mGlobalProxy.getHost(); 3517 port = mGlobalProxy.getPort(); 3518 exclList = mGlobalProxy.getExclusionListAsString(); 3519 if (proxyProperties.getPacFileUrl() != null) { 3520 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3521 } 3522 } else { 3523 mGlobalProxy = null; 3524 } 3525 ContentResolver res = mContext.getContentResolver(); 3526 final long token = Binder.clearCallingIdentity(); 3527 try { 3528 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3529 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3530 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3531 exclList); 3532 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3533 } finally { 3534 Binder.restoreCallingIdentity(token); 3535 } 3536 } 3537 3538 if (mGlobalProxy == null) { 3539 proxyProperties = mDefaultProxy; 3540 } 3541 sendProxyBroadcast(proxyProperties); 3542 } 3543 3544 private void loadGlobalProxy() { 3545 ContentResolver res = mContext.getContentResolver(); 3546 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3547 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3548 String exclList = Settings.Global.getString(res, 3549 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3550 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3551 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3552 ProxyInfo proxyProperties; 3553 if (!TextUtils.isEmpty(pacFileUrl)) { 3554 proxyProperties = new ProxyInfo(pacFileUrl); 3555 } else { 3556 proxyProperties = new ProxyInfo(host, port, exclList); 3557 } 3558 if (!proxyProperties.isValid()) { 3559 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3560 return; 3561 } 3562 3563 synchronized (mProxyLock) { 3564 mGlobalProxy = proxyProperties; 3565 } 3566 } 3567 } 3568 3569 public ProxyInfo getGlobalProxy() { 3570 // this information is already available as a world read/writable jvm property 3571 // so this API change wouldn't have a benifit. It also breaks the passing 3572 // of proxy info to all the JVMs. 3573 // enforceAccessPermission(); 3574 synchronized (mProxyLock) { 3575 return mGlobalProxy; 3576 } 3577 } 3578 3579 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3580 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3581 && (proxy.getPacFileUrl() == null)) { 3582 proxy = null; 3583 } 3584 synchronized (mProxyLock) { 3585 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3586 if (mDefaultProxy == proxy) return; // catches repeated nulls 3587 if (proxy != null && !proxy.isValid()) { 3588 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3589 return; 3590 } 3591 3592 // This call could be coming from the PacManager, containing the port of the local 3593 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3594 // global (to get the correct local port), and send a broadcast. 3595 // TODO: Switch PacManager to have its own message to send back rather than 3596 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3597 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3598 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3599 mGlobalProxy = proxy; 3600 sendProxyBroadcast(mGlobalProxy); 3601 return; 3602 } 3603 mDefaultProxy = proxy; 3604 3605 if (mGlobalProxy != null) return; 3606 if (!mDefaultProxyDisabled) { 3607 sendProxyBroadcast(proxy); 3608 } 3609 } 3610 } 3611 3612 private void handleDeprecatedGlobalHttpProxy() { 3613 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3614 Settings.Global.HTTP_PROXY); 3615 if (!TextUtils.isEmpty(proxy)) { 3616 String data[] = proxy.split(":"); 3617 if (data.length == 0) { 3618 return; 3619 } 3620 3621 String proxyHost = data[0]; 3622 int proxyPort = 8080; 3623 if (data.length > 1) { 3624 try { 3625 proxyPort = Integer.parseInt(data[1]); 3626 } catch (NumberFormatException e) { 3627 return; 3628 } 3629 } 3630 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3631 setGlobalProxy(p); 3632 } 3633 } 3634 3635 private void sendProxyBroadcast(ProxyInfo proxy) { 3636 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3637 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3638 if (DBG) log("sending Proxy Broadcast for " + proxy); 3639 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3640 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3641 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3642 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3643 final long ident = Binder.clearCallingIdentity(); 3644 try { 3645 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3646 } finally { 3647 Binder.restoreCallingIdentity(ident); 3648 } 3649 } 3650 3651 private static class SettingsObserver extends ContentObserver { 3652 private int mWhat; 3653 private Handler mHandler; 3654 SettingsObserver(Handler handler, int what) { 3655 super(handler); 3656 mHandler = handler; 3657 mWhat = what; 3658 } 3659 3660 void observe(Context context) { 3661 ContentResolver resolver = context.getContentResolver(); 3662 resolver.registerContentObserver(Settings.Global.getUriFor( 3663 Settings.Global.HTTP_PROXY), false, this); 3664 } 3665 3666 @Override 3667 public void onChange(boolean selfChange) { 3668 mHandler.obtainMessage(mWhat).sendToTarget(); 3669 } 3670 } 3671 3672 private static void log(String s) { 3673 Slog.d(TAG, s); 3674 } 3675 3676 private static void loge(String s) { 3677 Slog.e(TAG, s); 3678 } 3679 3680 int convertFeatureToNetworkType(int networkType, String feature) { 3681 int usedNetworkType = networkType; 3682 3683 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3684 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3685 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3686 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3687 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3688 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3689 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3690 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3691 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3692 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3693 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3694 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3695 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3696 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3697 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3698 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3699 } else { 3700 Slog.e(TAG, "Can't match any mobile netTracker!"); 3701 } 3702 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3703 if (TextUtils.equals(feature, "p2p")) { 3704 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3705 } else { 3706 Slog.e(TAG, "Can't match any wifi netTracker!"); 3707 } 3708 } else { 3709 Slog.e(TAG, "Unexpected network type"); 3710 } 3711 return usedNetworkType; 3712 } 3713 3714 private static <T> T checkNotNull(T value, String message) { 3715 if (value == null) { 3716 throw new NullPointerException(message); 3717 } 3718 return value; 3719 } 3720 3721 /** 3722 * Protect a socket from VPN routing rules. This method is used by 3723 * VpnBuilder and not available in ConnectivityManager. Permissions 3724 * are checked in Vpn class. 3725 * @hide 3726 */ 3727 @Override 3728 public boolean protectVpn(ParcelFileDescriptor socket) { 3729 throwIfLockdownEnabled(); 3730 try { 3731 int type = mActiveDefaultNetwork; 3732 int user = UserHandle.getUserId(Binder.getCallingUid()); 3733 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3734 synchronized(mVpns) { 3735 mVpns.get(user).protect(socket); 3736 } 3737 return true; 3738 } 3739 } catch (Exception e) { 3740 // ignore 3741 } finally { 3742 try { 3743 socket.close(); 3744 } catch (Exception e) { 3745 // ignore 3746 } 3747 } 3748 return false; 3749 } 3750 3751 /** 3752 * Prepare for a VPN application. This method is used by VpnDialogs 3753 * and not available in ConnectivityManager. Permissions are checked 3754 * in Vpn class. 3755 * @hide 3756 */ 3757 @Override 3758 public boolean prepareVpn(String oldPackage, String newPackage) { 3759 throwIfLockdownEnabled(); 3760 int user = UserHandle.getUserId(Binder.getCallingUid()); 3761 synchronized(mVpns) { 3762 return mVpns.get(user).prepare(oldPackage, newPackage); 3763 } 3764 } 3765 3766 @Override 3767 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3768 enforceMarkNetworkSocketPermission(); 3769 final long token = Binder.clearCallingIdentity(); 3770 try { 3771 int mark = mNetd.getMarkForUid(uid); 3772 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3773 if (mark == -1) { 3774 mark = 0; 3775 } 3776 NetworkUtils.markSocket(socket.getFd(), mark); 3777 } catch (RemoteException e) { 3778 } finally { 3779 Binder.restoreCallingIdentity(token); 3780 } 3781 } 3782 3783 /** 3784 * Configure a TUN interface and return its file descriptor. Parameters 3785 * are encoded and opaque to this class. This method is used by VpnBuilder 3786 * and not available in ConnectivityManager. Permissions are checked in 3787 * Vpn class. 3788 * @hide 3789 */ 3790 @Override 3791 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3792 throwIfLockdownEnabled(); 3793 int user = UserHandle.getUserId(Binder.getCallingUid()); 3794 synchronized(mVpns) { 3795 return mVpns.get(user).establish(config); 3796 } 3797 } 3798 3799 /** 3800 * Start legacy VPN, controlling native daemons as needed. Creates a 3801 * secondary thread to perform connection work, returning quickly. 3802 */ 3803 @Override 3804 public void startLegacyVpn(VpnProfile profile) { 3805 throwIfLockdownEnabled(); 3806 final LinkProperties egress = getActiveLinkProperties(); 3807 if (egress == null) { 3808 throw new IllegalStateException("Missing active network connection"); 3809 } 3810 int user = UserHandle.getUserId(Binder.getCallingUid()); 3811 synchronized(mVpns) { 3812 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3813 } 3814 } 3815 3816 /** 3817 * Return the information of the ongoing legacy VPN. This method is used 3818 * by VpnSettings and not available in ConnectivityManager. Permissions 3819 * are checked in Vpn class. 3820 * @hide 3821 */ 3822 @Override 3823 public LegacyVpnInfo getLegacyVpnInfo() { 3824 throwIfLockdownEnabled(); 3825 int user = UserHandle.getUserId(Binder.getCallingUid()); 3826 synchronized(mVpns) { 3827 return mVpns.get(user).getLegacyVpnInfo(); 3828 } 3829 } 3830 3831 /** 3832 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3833 * not available in ConnectivityManager. 3834 * Permissions are checked in Vpn class. 3835 * @hide 3836 */ 3837 @Override 3838 public VpnConfig getVpnConfig() { 3839 int user = UserHandle.getUserId(Binder.getCallingUid()); 3840 synchronized(mVpns) { 3841 return mVpns.get(user).getVpnConfig(); 3842 } 3843 } 3844 3845 /** 3846 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3847 * through NetworkStateTracker since it works differently. For example, it 3848 * needs to override DNS servers but never takes the default routes. It 3849 * relies on another data network, and it could keep existing connections 3850 * alive after reconnecting, switching between networks, or even resuming 3851 * from deep sleep. Calls from applications should be done synchronously 3852 * to avoid race conditions. As these are all hidden APIs, refactoring can 3853 * be done whenever a better abstraction is developed. 3854 */ 3855 public class VpnCallback { 3856 private VpnCallback() { 3857 } 3858 3859 public void onStateChanged(NetworkInfo info) { 3860 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3861 } 3862 3863 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3864 if (dnsServers == null) { 3865 restore(); 3866 return; 3867 } 3868 3869 // Convert DNS servers into addresses. 3870 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3871 for (String address : dnsServers) { 3872 // Double check the addresses and remove invalid ones. 3873 try { 3874 addresses.add(InetAddress.parseNumericAddress(address)); 3875 } catch (Exception e) { 3876 // ignore 3877 } 3878 } 3879 if (addresses.isEmpty()) { 3880 restore(); 3881 return; 3882 } 3883 3884 // Concatenate search domains into a string. 3885 StringBuilder buffer = new StringBuilder(); 3886 if (searchDomains != null) { 3887 for (String domain : searchDomains) { 3888 buffer.append(domain).append(' '); 3889 } 3890 } 3891 String domains = buffer.toString().trim(); 3892 3893 // Apply DNS changes. 3894 synchronized (mDnsLock) { 3895 // TODO: Re-enable this when the netId of the VPN is known. 3896 // updateDnsLocked("VPN", netId, addresses, domains); 3897 } 3898 3899 // Temporarily disable the default proxy (not global). 3900 synchronized (mProxyLock) { 3901 mDefaultProxyDisabled = true; 3902 if (mGlobalProxy == null && mDefaultProxy != null) { 3903 sendProxyBroadcast(null); 3904 } 3905 } 3906 3907 // TODO: support proxy per network. 3908 } 3909 3910 public void restore() { 3911 synchronized (mProxyLock) { 3912 mDefaultProxyDisabled = false; 3913 if (mGlobalProxy == null && mDefaultProxy != null) { 3914 sendProxyBroadcast(mDefaultProxy); 3915 } 3916 } 3917 } 3918 3919 public void protect(ParcelFileDescriptor socket) { 3920 try { 3921 final int mark = mNetd.getMarkForProtect(); 3922 NetworkUtils.markSocket(socket.getFd(), mark); 3923 } catch (RemoteException e) { 3924 } 3925 } 3926 3927 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3928 for (RouteInfo route : routes) { 3929 try { 3930 mNetd.setMarkedForwardingRoute(interfaze, route); 3931 } catch (RemoteException e) { 3932 } 3933 } 3934 } 3935 3936 public void setMarkedForwarding(String interfaze) { 3937 try { 3938 mNetd.setMarkedForwarding(interfaze); 3939 } catch (RemoteException e) { 3940 } 3941 } 3942 3943 public void clearMarkedForwarding(String interfaze) { 3944 try { 3945 mNetd.clearMarkedForwarding(interfaze); 3946 } catch (RemoteException e) { 3947 } 3948 } 3949 3950 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3951 int uidStart = uid * UserHandle.PER_USER_RANGE; 3952 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3953 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3954 } 3955 3956 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3957 int uidStart = uid * UserHandle.PER_USER_RANGE; 3958 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3959 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3960 } 3961 3962 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3963 boolean forwardDns) { 3964 // TODO: Re-enable this when the netId of the VPN is known. 3965 // try { 3966 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 3967 // } catch (RemoteException e) { 3968 // } 3969 3970 } 3971 3972 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3973 boolean forwardDns) { 3974 // TODO: Re-enable this when the netId of the VPN is known. 3975 // try { 3976 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3977 // } catch (RemoteException e) { 3978 // } 3979 3980 } 3981 } 3982 3983 @Override 3984 public boolean updateLockdownVpn() { 3985 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3986 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3987 return false; 3988 } 3989 3990 // Tear down existing lockdown if profile was removed 3991 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3992 if (mLockdownEnabled) { 3993 if (!mKeyStore.isUnlocked()) { 3994 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3995 return false; 3996 } 3997 3998 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3999 final VpnProfile profile = VpnProfile.decode( 4000 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4001 int user = UserHandle.getUserId(Binder.getCallingUid()); 4002 synchronized(mVpns) { 4003 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4004 profile)); 4005 } 4006 } else { 4007 setLockdownTracker(null); 4008 } 4009 4010 return true; 4011 } 4012 4013 /** 4014 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4015 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4016 */ 4017 private void setLockdownTracker(LockdownVpnTracker tracker) { 4018 // Shutdown any existing tracker 4019 final LockdownVpnTracker existing = mLockdownTracker; 4020 mLockdownTracker = null; 4021 if (existing != null) { 4022 existing.shutdown(); 4023 } 4024 4025 try { 4026 if (tracker != null) { 4027 mNetd.setFirewallEnabled(true); 4028 mNetd.setFirewallInterfaceRule("lo", true); 4029 mLockdownTracker = tracker; 4030 mLockdownTracker.init(); 4031 } else { 4032 mNetd.setFirewallEnabled(false); 4033 } 4034 } catch (RemoteException e) { 4035 // ignored; NMS lives inside system_server 4036 } 4037 } 4038 4039 private void throwIfLockdownEnabled() { 4040 if (mLockdownEnabled) { 4041 throw new IllegalStateException("Unavailable in lockdown mode"); 4042 } 4043 } 4044 4045 public void supplyMessenger(int networkType, Messenger messenger) { 4046 enforceConnectivityInternalPermission(); 4047 4048 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4049 mNetTrackers[networkType].supplyMessenger(messenger); 4050 } 4051 } 4052 4053 public int findConnectionTypeForIface(String iface) { 4054 enforceConnectivityInternalPermission(); 4055 4056 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4057 for (NetworkStateTracker tracker : mNetTrackers) { 4058 if (tracker != null) { 4059 LinkProperties lp = tracker.getLinkProperties(); 4060 if (lp != null && iface.equals(lp.getInterfaceName())) { 4061 return tracker.getNetworkInfo().getType(); 4062 } 4063 } 4064 } 4065 return ConnectivityManager.TYPE_NONE; 4066 } 4067 4068 /** 4069 * Have mobile data fail fast if enabled. 4070 * 4071 * @param enabled DctConstants.ENABLED/DISABLED 4072 */ 4073 private void setEnableFailFastMobileData(int enabled) { 4074 int tag; 4075 4076 if (enabled == DctConstants.ENABLED) { 4077 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4078 } else { 4079 tag = mEnableFailFastMobileDataTag.get(); 4080 } 4081 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4082 enabled)); 4083 } 4084 4085 private boolean isMobileDataStateTrackerReady() { 4086 MobileDataStateTracker mdst = 4087 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4088 return (mdst != null) && (mdst.isReady()); 4089 } 4090 4091 /** 4092 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4093 */ 4094 4095 /** 4096 * No connection was possible to the network. 4097 * This is NOT a warm sim. 4098 */ 4099 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4100 4101 /** 4102 * A connection was made to the internet, all is well. 4103 * This is NOT a warm sim. 4104 */ 4105 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4106 4107 /** 4108 * A connection was made but no dns server was available to resolve a name to address. 4109 * This is NOT a warm sim since provisioning network is supported. 4110 */ 4111 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4112 4113 /** 4114 * A connection was made but could not open a TCP connection. 4115 * This is NOT a warm sim since provisioning network is supported. 4116 */ 4117 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4118 4119 /** 4120 * A connection was made but there was a redirection, we appear to be in walled garden. 4121 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4122 */ 4123 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4124 4125 /** 4126 * The mobile network is a provisioning network. 4127 * This is an indication of a warm sim on a mobile network such as AT&T. 4128 */ 4129 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4130 4131 /** 4132 * The mobile network is provisioning 4133 */ 4134 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4135 4136 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4137 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4138 4139 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4140 4141 @Override 4142 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4143 int timeOutMs = -1; 4144 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4145 enforceConnectivityInternalPermission(); 4146 4147 final long token = Binder.clearCallingIdentity(); 4148 try { 4149 timeOutMs = suggestedTimeOutMs; 4150 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4151 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4152 } 4153 4154 // Check that mobile networks are supported 4155 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4156 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4157 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4158 return timeOutMs; 4159 } 4160 4161 // If we're already checking don't do it again 4162 // TODO: Add a queue of results... 4163 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4164 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4165 return timeOutMs; 4166 } 4167 4168 // Start off with mobile notification off 4169 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4170 4171 CheckMp checkMp = new CheckMp(mContext, this); 4172 CheckMp.CallBack cb = new CheckMp.CallBack() { 4173 @Override 4174 void onComplete(Integer result) { 4175 if (DBG) log("CheckMp.onComplete: result=" + result); 4176 NetworkInfo ni = 4177 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4178 switch(result) { 4179 case CMP_RESULT_CODE_CONNECTABLE: 4180 case CMP_RESULT_CODE_NO_CONNECTION: 4181 case CMP_RESULT_CODE_NO_DNS: 4182 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4183 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4184 break; 4185 } 4186 case CMP_RESULT_CODE_REDIRECTED: { 4187 if (DBG) log("CheckMp.onComplete: warm sim"); 4188 String url = getMobileProvisioningUrl(); 4189 if (TextUtils.isEmpty(url)) { 4190 url = getMobileRedirectedProvisioningUrl(); 4191 } 4192 if (TextUtils.isEmpty(url) == false) { 4193 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4194 setProvNotificationVisible(true, 4195 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4196 url); 4197 } else { 4198 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4199 } 4200 break; 4201 } 4202 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4203 String url = getMobileProvisioningUrl(); 4204 if (TextUtils.isEmpty(url) == false) { 4205 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4206 setProvNotificationVisible(true, 4207 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4208 url); 4209 // Mark that we've got a provisioning network and 4210 // Disable Mobile Data until user actually starts provisioning. 4211 mIsProvisioningNetwork.set(true); 4212 MobileDataStateTracker mdst = (MobileDataStateTracker) 4213 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4214 mdst.setInternalDataEnable(false); 4215 } else { 4216 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4217 } 4218 break; 4219 } 4220 case CMP_RESULT_CODE_IS_PROVISIONING: { 4221 // FIXME: Need to know when provisioning is done. Probably we can 4222 // check the completion status if successful we're done if we 4223 // "timedout" or still connected to provisioning APN turn off data? 4224 if (DBG) log("CheckMp.onComplete: provisioning started"); 4225 mIsStartingProvisioning.set(false); 4226 break; 4227 } 4228 default: { 4229 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4230 break; 4231 } 4232 } 4233 mIsCheckingMobileProvisioning.set(false); 4234 } 4235 }; 4236 CheckMp.Params params = 4237 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4238 if (DBG) log("checkMobileProvisioning: params=" + params); 4239 checkMp.execute(params); 4240 } finally { 4241 Binder.restoreCallingIdentity(token); 4242 if (DBG) log("checkMobileProvisioning: X"); 4243 } 4244 return timeOutMs; 4245 } 4246 4247 static class CheckMp extends 4248 AsyncTask<CheckMp.Params, Void, Integer> { 4249 private static final String CHECKMP_TAG = "CheckMp"; 4250 4251 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4252 private static boolean mTestingFailures; 4253 4254 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4255 private static final int MAX_LOOPS = 4; 4256 4257 // Number of milli-seconds to complete all of the retires 4258 public static final int MAX_TIMEOUT_MS = 60000; 4259 4260 // The socket should retry only 5 seconds, the default is longer 4261 private static final int SOCKET_TIMEOUT_MS = 5000; 4262 4263 // Sleep time for network errors 4264 private static final int NET_ERROR_SLEEP_SEC = 3; 4265 4266 // Sleep time for network route establishment 4267 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4268 4269 // Short sleep time for polling :( 4270 private static final int POLLING_SLEEP_SEC = 1; 4271 4272 private Context mContext; 4273 private ConnectivityService mCs; 4274 private TelephonyManager mTm; 4275 private Params mParams; 4276 4277 /** 4278 * Parameters for AsyncTask.execute 4279 */ 4280 static class Params { 4281 private String mUrl; 4282 private long mTimeOutMs; 4283 private CallBack mCb; 4284 4285 Params(String url, long timeOutMs, CallBack cb) { 4286 mUrl = url; 4287 mTimeOutMs = timeOutMs; 4288 mCb = cb; 4289 } 4290 4291 @Override 4292 public String toString() { 4293 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4294 } 4295 } 4296 4297 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4298 // issued by name or ip address, for Google its by name so when we construct 4299 // this HostnameVerifier we'll pass the original Uri and use it to verify 4300 // the host. If the host name in the original uril fails we'll test the 4301 // hostname parameter just incase things change. 4302 static class CheckMpHostnameVerifier implements HostnameVerifier { 4303 Uri mOrgUri; 4304 4305 CheckMpHostnameVerifier(Uri orgUri) { 4306 mOrgUri = orgUri; 4307 } 4308 4309 @Override 4310 public boolean verify(String hostname, SSLSession session) { 4311 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4312 String orgUriHost = mOrgUri.getHost(); 4313 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4314 if (DBG) { 4315 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4316 + " orgUriHost=" + orgUriHost); 4317 } 4318 return retVal; 4319 } 4320 } 4321 4322 /** 4323 * The call back object passed in Params. onComplete will be called 4324 * on the main thread. 4325 */ 4326 abstract static class CallBack { 4327 // Called on the main thread. 4328 abstract void onComplete(Integer result); 4329 } 4330 4331 public CheckMp(Context context, ConnectivityService cs) { 4332 if (Build.IS_DEBUGGABLE) { 4333 mTestingFailures = 4334 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4335 } else { 4336 mTestingFailures = false; 4337 } 4338 4339 mContext = context; 4340 mCs = cs; 4341 4342 // Setup access to TelephonyService we'll be using. 4343 mTm = (TelephonyManager) mContext.getSystemService( 4344 Context.TELEPHONY_SERVICE); 4345 } 4346 4347 /** 4348 * Get the default url to use for the test. 4349 */ 4350 public String getDefaultUrl() { 4351 // See http://go/clientsdns for usage approval 4352 String server = Settings.Global.getString(mContext.getContentResolver(), 4353 Settings.Global.CAPTIVE_PORTAL_SERVER); 4354 if (server == null) { 4355 server = "clients3.google.com"; 4356 } 4357 return "http://" + server + "/generate_204"; 4358 } 4359 4360 /** 4361 * Detect if its possible to connect to the http url. DNS based detection techniques 4362 * do not work at all hotspots. The best way to check is to perform a request to 4363 * a known address that fetches the data we expect. 4364 */ 4365 private synchronized Integer isMobileOk(Params params) { 4366 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4367 Uri orgUri = Uri.parse(params.mUrl); 4368 Random rand = new Random(); 4369 mParams = params; 4370 4371 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4372 result = CMP_RESULT_CODE_NO_CONNECTION; 4373 log("isMobileOk: X not mobile capable result=" + result); 4374 return result; 4375 } 4376 4377 if (mCs.mIsStartingProvisioning.get()) { 4378 result = CMP_RESULT_CODE_IS_PROVISIONING; 4379 log("isMobileOk: X is provisioning result=" + result); 4380 return result; 4381 } 4382 4383 // See if we've already determined we've got a provisioning connection, 4384 // if so we don't need to do anything active. 4385 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4386 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4387 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4388 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4389 4390 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4391 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4392 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4393 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4394 4395 if (isDefaultProvisioning || isHipriProvisioning) { 4396 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4397 log("isMobileOk: X default || hipri is provisioning result=" + result); 4398 return result; 4399 } 4400 4401 try { 4402 // Continue trying to connect until time has run out 4403 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4404 4405 if (!mCs.isMobileDataStateTrackerReady()) { 4406 // Wait for MobileDataStateTracker to be ready. 4407 if (DBG) log("isMobileOk: mdst is not ready"); 4408 while(SystemClock.elapsedRealtime() < endTime) { 4409 if (mCs.isMobileDataStateTrackerReady()) { 4410 // Enable fail fast as we'll do retries here and use a 4411 // hipri connection so the default connection stays active. 4412 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4413 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4414 break; 4415 } 4416 sleep(POLLING_SLEEP_SEC); 4417 } 4418 } 4419 4420 log("isMobileOk: start hipri url=" + params.mUrl); 4421 4422 // First wait until we can start using hipri 4423 Binder binder = new Binder(); 4424 while(SystemClock.elapsedRealtime() < endTime) { 4425 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4426 Phone.FEATURE_ENABLE_HIPRI, binder); 4427 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4428 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4429 log("isMobileOk: hipri started"); 4430 break; 4431 } 4432 if (VDBG) log("isMobileOk: hipri not started yet"); 4433 result = CMP_RESULT_CODE_NO_CONNECTION; 4434 sleep(POLLING_SLEEP_SEC); 4435 } 4436 4437 // Continue trying to connect until time has run out 4438 while(SystemClock.elapsedRealtime() < endTime) { 4439 try { 4440 // Wait for hipri to connect. 4441 // TODO: Don't poll and handle situation where hipri fails 4442 // because default is retrying. See b/9569540 4443 NetworkInfo.State state = mCs 4444 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4445 if (state != NetworkInfo.State.CONNECTED) { 4446 if (true/*VDBG*/) { 4447 log("isMobileOk: not connected ni=" + 4448 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4449 } 4450 sleep(POLLING_SLEEP_SEC); 4451 result = CMP_RESULT_CODE_NO_CONNECTION; 4452 continue; 4453 } 4454 4455 // Hipri has started check if this is a provisioning url 4456 MobileDataStateTracker mdst = (MobileDataStateTracker) 4457 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4458 if (mdst.isProvisioningNetwork()) { 4459 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4460 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4461 return result; 4462 } else { 4463 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4464 } 4465 4466 // Get of the addresses associated with the url host. We need to use the 4467 // address otherwise HttpURLConnection object will use the name to get 4468 // the addresses and will try every address but that will bypass the 4469 // route to host we setup and the connection could succeed as the default 4470 // interface might be connected to the internet via wifi or other interface. 4471 InetAddress[] addresses; 4472 try { 4473 addresses = InetAddress.getAllByName(orgUri.getHost()); 4474 } catch (UnknownHostException e) { 4475 result = CMP_RESULT_CODE_NO_DNS; 4476 log("isMobileOk: X UnknownHostException result=" + result); 4477 return result; 4478 } 4479 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4480 4481 // Get the type of addresses supported by this link 4482 LinkProperties lp = mCs.getLinkProperties( 4483 ConnectivityManager.TYPE_MOBILE_HIPRI); 4484 boolean linkHasIpv4 = lp.hasIPv4Address(); 4485 boolean linkHasIpv6 = lp.hasIPv6Address(); 4486 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4487 + " linkHasIpv6=" + linkHasIpv6); 4488 4489 final ArrayList<InetAddress> validAddresses = 4490 new ArrayList<InetAddress>(addresses.length); 4491 4492 for (InetAddress addr : addresses) { 4493 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4494 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4495 validAddresses.add(addr); 4496 } 4497 } 4498 4499 if (validAddresses.size() == 0) { 4500 return CMP_RESULT_CODE_NO_CONNECTION; 4501 } 4502 4503 int addrTried = 0; 4504 while (true) { 4505 // Loop through at most MAX_LOOPS valid addresses or until 4506 // we run out of time 4507 if (addrTried++ >= MAX_LOOPS) { 4508 log("isMobileOk: too many loops tried - giving up"); 4509 break; 4510 } 4511 if (SystemClock.elapsedRealtime() >= endTime) { 4512 log("isMobileOk: spend too much time - giving up"); 4513 break; 4514 } 4515 4516 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4517 validAddresses.size())); 4518 4519 // Make a route to host so we check the specific interface. 4520 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4521 hostAddr.getAddress(), null)) { 4522 // Wait a short time to be sure the route is established ?? 4523 log("isMobileOk:" 4524 + " wait to establish route to hostAddr=" + hostAddr); 4525 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4526 } else { 4527 log("isMobileOk:" 4528 + " could not establish route to hostAddr=" + hostAddr); 4529 // Wait a short time before the next attempt 4530 sleep(NET_ERROR_SLEEP_SEC); 4531 continue; 4532 } 4533 4534 // Rewrite the url to have numeric address to use the specific route 4535 // using http for half the attempts and https for the other half. 4536 // Doing https first and http second as on a redirected walled garden 4537 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4538 // handshake timed out" which we declare as 4539 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4540 // having http second we will be using logic used for some time. 4541 URL newUrl; 4542 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4543 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4544 orgUri.getPath()); 4545 log("isMobileOk: newUrl=" + newUrl); 4546 4547 HttpURLConnection urlConn = null; 4548 try { 4549 // Open the connection set the request headers and get the response 4550 urlConn = (HttpURLConnection)newUrl.openConnection( 4551 java.net.Proxy.NO_PROXY); 4552 if (scheme.equals("https")) { 4553 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4554 new CheckMpHostnameVerifier(orgUri)); 4555 } 4556 urlConn.setInstanceFollowRedirects(false); 4557 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4558 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4559 urlConn.setUseCaches(false); 4560 urlConn.setAllowUserInteraction(false); 4561 // Set the "Connection" to "Close" as by default "Keep-Alive" 4562 // is used which is useless in this case. 4563 urlConn.setRequestProperty("Connection", "close"); 4564 int responseCode = urlConn.getResponseCode(); 4565 4566 // For debug display the headers 4567 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4568 log("isMobileOk: headers=" + headers); 4569 4570 // Close the connection 4571 urlConn.disconnect(); 4572 urlConn = null; 4573 4574 if (mTestingFailures) { 4575 // Pretend no connection, this tests using http and https 4576 result = CMP_RESULT_CODE_NO_CONNECTION; 4577 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4578 continue; 4579 } 4580 4581 if (responseCode == 204) { 4582 // Return 4583 result = CMP_RESULT_CODE_CONNECTABLE; 4584 log("isMobileOk: X got expected responseCode=" + responseCode 4585 + " result=" + result); 4586 return result; 4587 } else { 4588 // Retry to be sure this was redirected, we've gotten 4589 // occasions where a server returned 200 even though 4590 // the device didn't have a "warm" sim. 4591 log("isMobileOk: not expected responseCode=" + responseCode); 4592 // TODO - it would be nice in the single-address case to do 4593 // another DNS resolve here, but flushing the cache is a bit 4594 // heavy-handed. 4595 result = CMP_RESULT_CODE_REDIRECTED; 4596 } 4597 } catch (Exception e) { 4598 log("isMobileOk: HttpURLConnection Exception" + e); 4599 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4600 if (urlConn != null) { 4601 urlConn.disconnect(); 4602 urlConn = null; 4603 } 4604 sleep(NET_ERROR_SLEEP_SEC); 4605 continue; 4606 } 4607 } 4608 log("isMobileOk: X loops|timed out result=" + result); 4609 return result; 4610 } catch (Exception e) { 4611 log("isMobileOk: Exception e=" + e); 4612 continue; 4613 } 4614 } 4615 log("isMobileOk: timed out"); 4616 } finally { 4617 log("isMobileOk: F stop hipri"); 4618 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4619 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4620 Phone.FEATURE_ENABLE_HIPRI); 4621 4622 // Wait for hipri to disconnect. 4623 long endTime = SystemClock.elapsedRealtime() + 5000; 4624 4625 while(SystemClock.elapsedRealtime() < endTime) { 4626 NetworkInfo.State state = mCs 4627 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4628 if (state != NetworkInfo.State.DISCONNECTED) { 4629 if (VDBG) { 4630 log("isMobileOk: connected ni=" + 4631 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4632 } 4633 sleep(POLLING_SLEEP_SEC); 4634 continue; 4635 } 4636 } 4637 4638 log("isMobileOk: X result=" + result); 4639 } 4640 return result; 4641 } 4642 4643 @Override 4644 protected Integer doInBackground(Params... params) { 4645 return isMobileOk(params[0]); 4646 } 4647 4648 @Override 4649 protected void onPostExecute(Integer result) { 4650 log("onPostExecute: result=" + result); 4651 if ((mParams != null) && (mParams.mCb != null)) { 4652 mParams.mCb.onComplete(result); 4653 } 4654 } 4655 4656 private String inetAddressesToString(InetAddress[] addresses) { 4657 StringBuffer sb = new StringBuffer(); 4658 boolean firstTime = true; 4659 for(InetAddress addr : addresses) { 4660 if (firstTime) { 4661 firstTime = false; 4662 } else { 4663 sb.append(","); 4664 } 4665 sb.append(addr); 4666 } 4667 return sb.toString(); 4668 } 4669 4670 private void printNetworkInfo() { 4671 boolean hasIccCard = mTm.hasIccCard(); 4672 int simState = mTm.getSimState(); 4673 log("hasIccCard=" + hasIccCard 4674 + " simState=" + simState); 4675 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4676 if (ni != null) { 4677 log("ni.length=" + ni.length); 4678 for (NetworkInfo netInfo: ni) { 4679 log("netInfo=" + netInfo.toString()); 4680 } 4681 } else { 4682 log("no network info ni=null"); 4683 } 4684 } 4685 4686 /** 4687 * Sleep for a few seconds then return. 4688 * @param seconds 4689 */ 4690 private static void sleep(int seconds) { 4691 long stopTime = System.nanoTime() + (seconds * 1000000000); 4692 long sleepTime; 4693 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4694 try { 4695 Thread.sleep(sleepTime / 1000000); 4696 } catch (InterruptedException ignored) { 4697 } 4698 } 4699 } 4700 4701 private static void log(String s) { 4702 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4703 } 4704 } 4705 4706 // TODO: Move to ConnectivityManager and make public? 4707 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4708 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4709 4710 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4711 @Override 4712 public void onReceive(Context context, Intent intent) { 4713 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4714 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4715 } 4716 } 4717 }; 4718 4719 private void handleMobileProvisioningAction(String url) { 4720 // Mark notification as not visible 4721 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4722 4723 // If provisioning network handle as a special case, 4724 // otherwise launch browser with the intent directly. 4725 if (mIsProvisioningNetwork.get()) { 4726 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4727 mIsStartingProvisioning.set(true); 4728 MobileDataStateTracker mdst = (MobileDataStateTracker) 4729 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4730 mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4731 mdst.enableMobileProvisioning(url); 4732 } else { 4733 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4734 // Check for apps that can handle provisioning first 4735 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4736 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4737 + mTelephonyManager.getSimOperator()); 4738 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4739 != null) { 4740 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4741 Intent.FLAG_ACTIVITY_NEW_TASK); 4742 mContext.startActivity(provisioningIntent); 4743 } else { 4744 // If no apps exist, use standard URL ACTION_VIEW method 4745 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4746 Intent.CATEGORY_APP_BROWSER); 4747 newIntent.setData(Uri.parse(url)); 4748 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4749 Intent.FLAG_ACTIVITY_NEW_TASK); 4750 try { 4751 mContext.startActivity(newIntent); 4752 } catch (ActivityNotFoundException e) { 4753 loge("handleMobileProvisioningAction: startActivity failed" + e); 4754 } 4755 } 4756 } 4757 } 4758 4759 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4760 private volatile boolean mIsNotificationVisible = false; 4761 4762 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4763 String url) { 4764 if (DBG) { 4765 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4766 + " extraInfo=" + extraInfo + " url=" + url); 4767 } 4768 4769 Resources r = Resources.getSystem(); 4770 NotificationManager notificationManager = (NotificationManager) mContext 4771 .getSystemService(Context.NOTIFICATION_SERVICE); 4772 4773 if (visible) { 4774 CharSequence title; 4775 CharSequence details; 4776 int icon; 4777 Intent intent; 4778 Notification notification = new Notification(); 4779 switch (networkType) { 4780 case ConnectivityManager.TYPE_WIFI: 4781 title = r.getString(R.string.wifi_available_sign_in, 0); 4782 details = r.getString(R.string.network_available_sign_in_detailed, 4783 extraInfo); 4784 icon = R.drawable.stat_notify_wifi_in_range; 4785 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4786 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4787 Intent.FLAG_ACTIVITY_NEW_TASK); 4788 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4789 break; 4790 case ConnectivityManager.TYPE_MOBILE: 4791 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4792 title = r.getString(R.string.network_available_sign_in, 0); 4793 // TODO: Change this to pull from NetworkInfo once a printable 4794 // name has been added to it 4795 details = mTelephonyManager.getNetworkOperatorName(); 4796 icon = R.drawable.stat_notify_rssi_in_range; 4797 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4798 intent.putExtra("EXTRA_URL", url); 4799 intent.setFlags(0); 4800 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4801 break; 4802 default: 4803 title = r.getString(R.string.network_available_sign_in, 0); 4804 details = r.getString(R.string.network_available_sign_in_detailed, 4805 extraInfo); 4806 icon = R.drawable.stat_notify_rssi_in_range; 4807 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4808 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4809 Intent.FLAG_ACTIVITY_NEW_TASK); 4810 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4811 break; 4812 } 4813 4814 notification.when = 0; 4815 notification.icon = icon; 4816 notification.flags = Notification.FLAG_AUTO_CANCEL; 4817 notification.tickerText = title; 4818 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4819 4820 try { 4821 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4822 } catch (NullPointerException npe) { 4823 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4824 npe.printStackTrace(); 4825 } 4826 } else { 4827 try { 4828 notificationManager.cancel(NOTIFICATION_ID, networkType); 4829 } catch (NullPointerException npe) { 4830 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4831 npe.printStackTrace(); 4832 } 4833 } 4834 mIsNotificationVisible = visible; 4835 } 4836 4837 /** Location to an updatable file listing carrier provisioning urls. 4838 * An example: 4839 * 4840 * <?xml version="1.0" encoding="utf-8"?> 4841 * <provisioningUrls> 4842 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4843 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4844 * </provisioningUrls> 4845 */ 4846 private static final String PROVISIONING_URL_PATH = 4847 "/data/misc/radio/provisioning_urls.xml"; 4848 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4849 4850 /** XML tag for root element. */ 4851 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4852 /** XML tag for individual url */ 4853 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4854 /** XML tag for redirected url */ 4855 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4856 /** XML attribute for mcc */ 4857 private static final String ATTR_MCC = "mcc"; 4858 /** XML attribute for mnc */ 4859 private static final String ATTR_MNC = "mnc"; 4860 4861 private static final int REDIRECTED_PROVISIONING = 1; 4862 private static final int PROVISIONING = 2; 4863 4864 private String getProvisioningUrlBaseFromFile(int type) { 4865 FileReader fileReader = null; 4866 XmlPullParser parser = null; 4867 Configuration config = mContext.getResources().getConfiguration(); 4868 String tagType; 4869 4870 switch (type) { 4871 case PROVISIONING: 4872 tagType = TAG_PROVISIONING_URL; 4873 break; 4874 case REDIRECTED_PROVISIONING: 4875 tagType = TAG_REDIRECTED_URL; 4876 break; 4877 default: 4878 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4879 type); 4880 } 4881 4882 try { 4883 fileReader = new FileReader(mProvisioningUrlFile); 4884 parser = Xml.newPullParser(); 4885 parser.setInput(fileReader); 4886 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4887 4888 while (true) { 4889 XmlUtils.nextElement(parser); 4890 4891 String element = parser.getName(); 4892 if (element == null) break; 4893 4894 if (element.equals(tagType)) { 4895 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4896 try { 4897 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4898 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4899 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4900 parser.next(); 4901 if (parser.getEventType() == XmlPullParser.TEXT) { 4902 return parser.getText(); 4903 } 4904 } 4905 } 4906 } catch (NumberFormatException e) { 4907 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4908 } 4909 } 4910 } 4911 return null; 4912 } catch (FileNotFoundException e) { 4913 loge("Carrier Provisioning Urls file not found"); 4914 } catch (XmlPullParserException e) { 4915 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4916 } catch (IOException e) { 4917 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4918 } finally { 4919 if (fileReader != null) { 4920 try { 4921 fileReader.close(); 4922 } catch (IOException e) {} 4923 } 4924 } 4925 return null; 4926 } 4927 4928 @Override 4929 public String getMobileRedirectedProvisioningUrl() { 4930 enforceConnectivityInternalPermission(); 4931 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4932 if (TextUtils.isEmpty(url)) { 4933 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4934 } 4935 return url; 4936 } 4937 4938 @Override 4939 public String getMobileProvisioningUrl() { 4940 enforceConnectivityInternalPermission(); 4941 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4942 if (TextUtils.isEmpty(url)) { 4943 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4944 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4945 } else { 4946 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4947 } 4948 // populate the iccid, imei and phone number in the provisioning url. 4949 if (!TextUtils.isEmpty(url)) { 4950 String phoneNumber = mTelephonyManager.getLine1Number(); 4951 if (TextUtils.isEmpty(phoneNumber)) { 4952 phoneNumber = "0000000000"; 4953 } 4954 url = String.format(url, 4955 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4956 mTelephonyManager.getDeviceId() /* IMEI */, 4957 phoneNumber /* Phone numer */); 4958 } 4959 4960 return url; 4961 } 4962 4963 @Override 4964 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4965 String extraInfo, String url) { 4966 enforceConnectivityInternalPermission(); 4967 setProvNotificationVisible(visible, networkType, extraInfo, url); 4968 } 4969 4970 @Override 4971 public void setAirplaneMode(boolean enable) { 4972 enforceConnectivityInternalPermission(); 4973 final long ident = Binder.clearCallingIdentity(); 4974 try { 4975 final ContentResolver cr = mContext.getContentResolver(); 4976 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4977 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4978 intent.putExtra("state", enable); 4979 mContext.sendBroadcast(intent); 4980 } finally { 4981 Binder.restoreCallingIdentity(ident); 4982 } 4983 } 4984 4985 private void onUserStart(int userId) { 4986 synchronized(mVpns) { 4987 Vpn userVpn = mVpns.get(userId); 4988 if (userVpn != null) { 4989 loge("Starting user already has a VPN"); 4990 return; 4991 } 4992 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 4993 mVpns.put(userId, userVpn); 4994 userVpn.startMonitoring(mContext, mTrackerHandler); 4995 } 4996 } 4997 4998 private void onUserStop(int userId) { 4999 synchronized(mVpns) { 5000 Vpn userVpn = mVpns.get(userId); 5001 if (userVpn == null) { 5002 loge("Stopping user has no VPN"); 5003 return; 5004 } 5005 mVpns.delete(userId); 5006 } 5007 } 5008 5009 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5010 @Override 5011 public void onReceive(Context context, Intent intent) { 5012 final String action = intent.getAction(); 5013 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5014 if (userId == UserHandle.USER_NULL) return; 5015 5016 if (Intent.ACTION_USER_STARTING.equals(action)) { 5017 onUserStart(userId); 5018 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5019 onUserStop(userId); 5020 } 5021 } 5022 }; 5023 5024 @Override 5025 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5026 enforceAccessPermission(); 5027 if (isNetworkTypeValid(networkType)) { 5028 return mNetTrackers[networkType].getLinkQualityInfo(); 5029 } else { 5030 return null; 5031 } 5032 } 5033 5034 @Override 5035 public LinkQualityInfo getActiveLinkQualityInfo() { 5036 enforceAccessPermission(); 5037 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 5038 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5039 } else { 5040 return null; 5041 } 5042 } 5043 5044 @Override 5045 public LinkQualityInfo[] getAllLinkQualityInfo() { 5046 enforceAccessPermission(); 5047 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5048 for (NetworkStateTracker tracker : mNetTrackers) { 5049 if (tracker != null) { 5050 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5051 if (li != null) { 5052 result.add(li); 5053 } 5054 } 5055 } 5056 5057 return result.toArray(new LinkQualityInfo[result.size()]); 5058 } 5059 5060 /* Infrastructure for network sampling */ 5061 5062 private void handleNetworkSamplingTimeout() { 5063 5064 log("Sampling interval elapsed, updating statistics .."); 5065 5066 // initialize list of interfaces .. 5067 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5068 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5069 for (NetworkStateTracker tracker : mNetTrackers) { 5070 if (tracker != null) { 5071 String ifaceName = tracker.getNetworkInterfaceName(); 5072 if (ifaceName != null) { 5073 mapIfaceToSample.put(ifaceName, null); 5074 } 5075 } 5076 } 5077 5078 // Read samples for all interfaces 5079 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5080 5081 // process samples for all networks 5082 for (NetworkStateTracker tracker : mNetTrackers) { 5083 if (tracker != null) { 5084 String ifaceName = tracker.getNetworkInterfaceName(); 5085 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5086 if (ss != null) { 5087 // end the previous sampling cycle 5088 tracker.stopSampling(ss); 5089 // start a new sampling cycle .. 5090 tracker.startSampling(ss); 5091 } 5092 } 5093 } 5094 5095 log("Done."); 5096 5097 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5098 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5099 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5100 5101 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5102 5103 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5104 } 5105 5106 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5107 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5108 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5109 } 5110 5111 private final ArrayList<AsyncChannel> mNetworkFactories = new ArrayList<AsyncChannel>(); 5112 5113 public void registerNetworkFactory(Messenger messenger) { 5114 enforceConnectivityInternalPermission(); 5115 5116 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, messenger)); 5117 } 5118 5119 private void handleRegisterNetworkFactory(Messenger messenger) { 5120 if (VDBG) log("Got NetworkFactory Messenger"); 5121 AsyncChannel ac = new AsyncChannel(); 5122 mNetworkFactories.add(ac); 5123 ac.connect(mContext, mTrackerHandler, messenger); 5124 } 5125 5126 private final SparseArray<NetworkRequest> mNetworkRequests = new SparseArray<NetworkRequest>(); 5127} 5128