ConnectivityService.java revision e049c23980409be6576da3d30538a6cdc43854dd
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); 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) { 1704 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt); 1705 } 1706 1707 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable) { 1708 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT); 1709 } 1710 1711 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt) { 1712 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt); 1713 } 1714 1715 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr) { 1716 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT); 1717 } 1718 1719 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1720 boolean toDefaultTable, boolean exempt) { 1721 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1722 if (bestRoute == null) { 1723 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1724 } else { 1725 String iface = bestRoute.getInterface(); 1726 if (bestRoute.getGateway().equals(addr)) { 1727 // if there is no better route, add the implied hostroute for our gateway 1728 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1729 } else { 1730 // if we will connect to this through another route, add a direct route 1731 // to it's gateway 1732 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1733 } 1734 } 1735 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt); 1736 } 1737 1738 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1739 boolean toDefaultTable, boolean exempt) { 1740 if ((lp == null) || (r == null)) { 1741 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1742 return false; 1743 } 1744 1745 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1746 loge("Error modifying route - too much recursion"); 1747 return false; 1748 } 1749 1750 String ifaceName = r.getInterface(); 1751 if(ifaceName == null) { 1752 loge("Error modifying route - no interface name"); 1753 return false; 1754 } 1755 if (r.hasGateway()) { 1756 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1757 if (bestRoute != null) { 1758 if (bestRoute.getGateway().equals(r.getGateway())) { 1759 // if there is no better route, add the implied hostroute for our gateway 1760 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1761 } else { 1762 // if we will connect to our gateway through another route, add a direct 1763 // route to it's gateway 1764 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1765 bestRoute.getGateway(), 1766 ifaceName); 1767 } 1768 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt); 1769 } 1770 } 1771 if (doAdd) { 1772 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1773 try { 1774 if (toDefaultTable) { 1775 synchronized (mRoutesLock) { 1776 // only track default table - only one apps can effect 1777 mAddedRoutes.add(r); 1778 mNetd.addRoute(ifaceName, r); 1779 if (exempt) { 1780 LinkAddress dest = r.getDestination(); 1781 if (!mExemptAddresses.contains(dest)) { 1782 mNetd.setHostExemption(dest); 1783 mExemptAddresses.add(dest); 1784 } 1785 } 1786 } 1787 } else { 1788 mNetd.addSecondaryRoute(ifaceName, r); 1789 } 1790 } catch (Exception e) { 1791 // never crash - catch them all 1792 if (DBG) loge("Exception trying to add a route: " + e); 1793 return false; 1794 } 1795 } else { 1796 // if we remove this one and there are no more like it, then refcount==0 and 1797 // we can remove it from the table 1798 if (toDefaultTable) { 1799 synchronized (mRoutesLock) { 1800 mAddedRoutes.remove(r); 1801 if (mAddedRoutes.contains(r) == false) { 1802 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1803 try { 1804 mNetd.removeRoute(ifaceName, r); 1805 LinkAddress dest = r.getDestination(); 1806 if (mExemptAddresses.contains(dest)) { 1807 mNetd.clearHostExemption(dest); 1808 mExemptAddresses.remove(dest); 1809 } 1810 } catch (Exception e) { 1811 // never crash - catch them all 1812 if (VDBG) loge("Exception trying to remove a route: " + e); 1813 return false; 1814 } 1815 } else { 1816 if (VDBG) log("not removing " + r + " as it's still in use"); 1817 } 1818 } 1819 } else { 1820 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1821 try { 1822 mNetd.removeSecondaryRoute(ifaceName, r); 1823 } catch (Exception e) { 1824 // never crash - catch them all 1825 if (VDBG) loge("Exception trying to remove a route: " + e); 1826 return false; 1827 } 1828 } 1829 } 1830 return true; 1831 } 1832 1833 /** 1834 * @see ConnectivityManager#getMobileDataEnabled() 1835 */ 1836 public boolean getMobileDataEnabled() { 1837 // TODO: This detail should probably be in DataConnectionTracker's 1838 // which is where we store the value and maybe make this 1839 // asynchronous. 1840 enforceAccessPermission(); 1841 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1842 Settings.Global.MOBILE_DATA, 1) == 1; 1843 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1844 return retVal; 1845 } 1846 1847 public void setDataDependency(int networkType, boolean met) { 1848 enforceConnectivityInternalPermission(); 1849 1850 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1851 (met ? ENABLED : DISABLED), networkType)); 1852 } 1853 1854 private void handleSetDependencyMet(int networkType, boolean met) { 1855 if (mNetTrackers[networkType] != null) { 1856 if (DBG) { 1857 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1858 } 1859 mNetTrackers[networkType].setDependencyMet(met); 1860 } 1861 } 1862 1863 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1864 @Override 1865 public void onUidRulesChanged(int uid, int uidRules) { 1866 // caller is NPMS, since we only register with them 1867 if (LOGD_RULES) { 1868 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1869 } 1870 1871 synchronized (mRulesLock) { 1872 // skip update when we've already applied rules 1873 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1874 if (oldRules == uidRules) return; 1875 1876 mUidRules.put(uid, uidRules); 1877 } 1878 1879 // TODO: notify UID when it has requested targeted updates 1880 } 1881 1882 @Override 1883 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1884 // caller is NPMS, since we only register with them 1885 if (LOGD_RULES) { 1886 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1887 } 1888 1889 synchronized (mRulesLock) { 1890 mMeteredIfaces.clear(); 1891 for (String iface : meteredIfaces) { 1892 mMeteredIfaces.add(iface); 1893 } 1894 } 1895 } 1896 1897 @Override 1898 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1899 // caller is NPMS, since we only register with them 1900 if (LOGD_RULES) { 1901 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1902 } 1903 1904 // kick off connectivity change broadcast for active network, since 1905 // global background policy change is radical. 1906 final int networkType = mActiveDefaultNetwork; 1907 if (isNetworkTypeValid(networkType)) { 1908 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1909 if (tracker != null) { 1910 final NetworkInfo info = tracker.getNetworkInfo(); 1911 if (info != null && info.isConnected()) { 1912 sendConnectedBroadcast(info); 1913 } 1914 } 1915 } 1916 } 1917 }; 1918 1919 /** 1920 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1921 */ 1922 public void setMobileDataEnabled(boolean enabled) { 1923 enforceChangePermission(); 1924 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1925 1926 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1927 (enabled ? ENABLED : DISABLED), 0)); 1928 } 1929 1930 private void handleSetMobileData(boolean enabled) { 1931 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1932 if (VDBG) { 1933 log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1934 } 1935 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled); 1936 } 1937 if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) { 1938 if (VDBG) { 1939 log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled); 1940 } 1941 mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled); 1942 } 1943 } 1944 1945 @Override 1946 public void setPolicyDataEnable(int networkType, boolean enabled) { 1947 // only someone like NPMS should only be calling us 1948 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1949 1950 mHandler.sendMessage(mHandler.obtainMessage( 1951 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1952 } 1953 1954 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1955 if (isNetworkTypeValid(networkType)) { 1956 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1957 if (tracker != null) { 1958 tracker.setPolicyDataEnable(enabled); 1959 } 1960 } 1961 } 1962 1963 private void enforceAccessPermission() { 1964 mContext.enforceCallingOrSelfPermission( 1965 android.Manifest.permission.ACCESS_NETWORK_STATE, 1966 "ConnectivityService"); 1967 } 1968 1969 private void enforceChangePermission() { 1970 mContext.enforceCallingOrSelfPermission( 1971 android.Manifest.permission.CHANGE_NETWORK_STATE, 1972 "ConnectivityService"); 1973 } 1974 1975 // TODO Make this a special check when it goes public 1976 private void enforceTetherChangePermission() { 1977 mContext.enforceCallingOrSelfPermission( 1978 android.Manifest.permission.CHANGE_NETWORK_STATE, 1979 "ConnectivityService"); 1980 } 1981 1982 private void enforceTetherAccessPermission() { 1983 mContext.enforceCallingOrSelfPermission( 1984 android.Manifest.permission.ACCESS_NETWORK_STATE, 1985 "ConnectivityService"); 1986 } 1987 1988 private void enforceConnectivityInternalPermission() { 1989 mContext.enforceCallingOrSelfPermission( 1990 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1991 "ConnectivityService"); 1992 } 1993 1994 private void enforceMarkNetworkSocketPermission() { 1995 //Media server special case 1996 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1997 return; 1998 } 1999 mContext.enforceCallingOrSelfPermission( 2000 android.Manifest.permission.MARK_NETWORK_SOCKET, 2001 "ConnectivityService"); 2002 } 2003 2004 /** 2005 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 2006 * network, we ignore it. If it is for the active network, we send out a 2007 * broadcast. But first, we check whether it might be possible to connect 2008 * to a different network. 2009 * @param info the {@code NetworkInfo} for the network 2010 */ 2011 private void handleDisconnect(NetworkInfo info) { 2012 2013 int prevNetType = info.getType(); 2014 2015 mNetTrackers[prevNetType].setTeardownRequested(false); 2016 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2017 2018 // Remove idletimer previously setup in {@code handleConnect} 2019 if (mNetConfigs[prevNetType].isDefault()) { 2020 removeDataActivityTracking(prevNetType); 2021 } 2022 2023 /* 2024 * If the disconnected network is not the active one, then don't report 2025 * this as a loss of connectivity. What probably happened is that we're 2026 * getting the disconnect for a network that we explicitly disabled 2027 * in accordance with network preference policies. 2028 */ 2029 if (!mNetConfigs[prevNetType].isDefault()) { 2030 List<Integer> pids = mNetRequestersPids[prevNetType]; 2031 for (Integer pid : pids) { 2032 // will remove them because the net's no longer connected 2033 // need to do this now as only now do we know the pids and 2034 // can properly null things that are no longer referenced. 2035 reassessPidDns(pid.intValue(), false); 2036 } 2037 } 2038 2039 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2040 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2041 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2042 if (info.isFailover()) { 2043 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2044 info.setFailover(false); 2045 } 2046 if (info.getReason() != null) { 2047 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2048 } 2049 if (info.getExtraInfo() != null) { 2050 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2051 info.getExtraInfo()); 2052 } 2053 2054 if (mNetConfigs[prevNetType].isDefault()) { 2055 tryFailover(prevNetType); 2056 if (mActiveDefaultNetwork != -1) { 2057 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2058 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2059 } else { 2060 mDefaultInetConditionPublished = 0; // we're not connected anymore 2061 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2062 } 2063 } 2064 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2065 2066 // Reset interface if no other connections are using the same interface 2067 boolean doReset = true; 2068 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2069 if (linkProperties != null) { 2070 String oldIface = linkProperties.getInterfaceName(); 2071 if (TextUtils.isEmpty(oldIface) == false) { 2072 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2073 if (networkStateTracker == null) continue; 2074 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2075 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2076 LinkProperties l = networkStateTracker.getLinkProperties(); 2077 if (l == null) continue; 2078 if (oldIface.equals(l.getInterfaceName())) { 2079 doReset = false; 2080 break; 2081 } 2082 } 2083 } 2084 } 2085 } 2086 2087 // do this before we broadcast the change 2088 handleConnectivityChange(prevNetType, doReset); 2089 2090 final Intent immediateIntent = new Intent(intent); 2091 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2092 sendStickyBroadcast(immediateIntent); 2093 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2094 /* 2095 * If the failover network is already connected, then immediately send 2096 * out a followup broadcast indicating successful failover 2097 */ 2098 if (mActiveDefaultNetwork != -1) { 2099 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2100 getConnectivityChangeDelay()); 2101 } 2102 try { 2103// mNetd.removeNetwork(thisNetId); 2104 } catch (Exception e) { 2105 loge("Exception removing network: " + e); 2106 } finally { 2107 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2108 } 2109 } 2110 2111 private void tryFailover(int prevNetType) { 2112 /* 2113 * If this is a default network, check if other defaults are available. 2114 * Try to reconnect on all available and let them hash it out when 2115 * more than one connects. 2116 */ 2117 if (mNetConfigs[prevNetType].isDefault()) { 2118 if (mActiveDefaultNetwork == prevNetType) { 2119 if (DBG) { 2120 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2121 } 2122 mActiveDefaultNetwork = -1; 2123 } 2124 2125 // don't signal a reconnect for anything lower or equal priority than our 2126 // current connected default 2127 // TODO - don't filter by priority now - nice optimization but risky 2128// int currentPriority = -1; 2129// if (mActiveDefaultNetwork != -1) { 2130// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2131// } 2132 2133 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2134 if (checkType == prevNetType) continue; 2135 if (mNetConfigs[checkType] == null) continue; 2136 if (!mNetConfigs[checkType].isDefault()) continue; 2137 if (mNetTrackers[checkType] == null) continue; 2138 2139// Enabling the isAvailable() optimization caused mobile to not get 2140// selected if it was in the middle of error handling. Specifically 2141// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2142// would not be available and we wouldn't get connected to anything. 2143// So removing the isAvailable() optimization below for now. TODO: This 2144// optimization should work and we need to investigate why it doesn't work. 2145// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2146// complete before it is really complete. 2147 2148// if (!mNetTrackers[checkType].isAvailable()) continue; 2149 2150// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2151 2152 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2153 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2154 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2155 checkInfo.setFailover(true); 2156 checkTracker.reconnect(); 2157 } 2158 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2159 } 2160 } 2161 } 2162 2163 public void sendConnectedBroadcast(NetworkInfo info) { 2164 enforceConnectivityInternalPermission(); 2165 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2166 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2167 } 2168 2169 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2170 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2171 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2172 } 2173 2174 private void sendInetConditionBroadcast(NetworkInfo info) { 2175 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2176 } 2177 2178 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2179 if (mLockdownTracker != null) { 2180 info = mLockdownTracker.augmentNetworkInfo(info); 2181 } 2182 2183 Intent intent = new Intent(bcastType); 2184 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2185 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2186 if (info.isFailover()) { 2187 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2188 info.setFailover(false); 2189 } 2190 if (info.getReason() != null) { 2191 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2192 } 2193 if (info.getExtraInfo() != null) { 2194 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2195 info.getExtraInfo()); 2196 } 2197 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2198 return intent; 2199 } 2200 2201 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2202 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2203 } 2204 2205 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2206 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2207 } 2208 2209 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2210 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2211 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2212 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2213 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2214 final long ident = Binder.clearCallingIdentity(); 2215 try { 2216 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2217 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2218 } finally { 2219 Binder.restoreCallingIdentity(ident); 2220 } 2221 } 2222 2223 /** 2224 * Called when an attempt to fail over to another network has failed. 2225 * @param info the {@link NetworkInfo} for the failed network 2226 */ 2227 private void handleConnectionFailure(NetworkInfo info) { 2228 mNetTrackers[info.getType()].setTeardownRequested(false); 2229 2230 String reason = info.getReason(); 2231 String extraInfo = info.getExtraInfo(); 2232 2233 String reasonText; 2234 if (reason == null) { 2235 reasonText = "."; 2236 } else { 2237 reasonText = " (" + reason + ")."; 2238 } 2239 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 2240 2241 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2242 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2243 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2244 if (getActiveNetworkInfo() == null) { 2245 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2246 } 2247 if (reason != null) { 2248 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 2249 } 2250 if (extraInfo != null) { 2251 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 2252 } 2253 if (info.isFailover()) { 2254 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2255 info.setFailover(false); 2256 } 2257 2258 if (mNetConfigs[info.getType()].isDefault()) { 2259 tryFailover(info.getType()); 2260 if (mActiveDefaultNetwork != -1) { 2261 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2262 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2263 } else { 2264 mDefaultInetConditionPublished = 0; 2265 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2266 } 2267 } 2268 2269 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2270 2271 final Intent immediateIntent = new Intent(intent); 2272 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2273 sendStickyBroadcast(immediateIntent); 2274 sendStickyBroadcast(intent); 2275 /* 2276 * If the failover network is already connected, then immediately send 2277 * out a followup broadcast indicating successful failover 2278 */ 2279 if (mActiveDefaultNetwork != -1) { 2280 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 2281 } 2282 } 2283 2284 private void sendStickyBroadcast(Intent intent) { 2285 synchronized(this) { 2286 if (!mSystemReady) { 2287 mInitialBroadcast = new Intent(intent); 2288 } 2289 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2290 if (VDBG) { 2291 log("sendStickyBroadcast: action=" + intent.getAction()); 2292 } 2293 2294 final long ident = Binder.clearCallingIdentity(); 2295 try { 2296 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2297 } finally { 2298 Binder.restoreCallingIdentity(ident); 2299 } 2300 } 2301 } 2302 2303 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2304 if (delayMs <= 0) { 2305 sendStickyBroadcast(intent); 2306 } else { 2307 if (VDBG) { 2308 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2309 + intent.getAction()); 2310 } 2311 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2312 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2313 } 2314 } 2315 2316 void systemReady() { 2317 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2318 loadGlobalProxy(); 2319 2320 synchronized(this) { 2321 mSystemReady = true; 2322 if (mInitialBroadcast != null) { 2323 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2324 mInitialBroadcast = null; 2325 } 2326 } 2327 // load the global proxy at startup 2328 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2329 2330 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2331 // for user to unlock device. 2332 if (!updateLockdownVpn()) { 2333 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2334 mContext.registerReceiver(mUserPresentReceiver, filter); 2335 } 2336 } 2337 2338 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2339 @Override 2340 public void onReceive(Context context, Intent intent) { 2341 // Try creating lockdown tracker, since user present usually means 2342 // unlocked keystore. 2343 if (updateLockdownVpn()) { 2344 mContext.unregisterReceiver(this); 2345 } 2346 } 2347 }; 2348 2349 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2350 if (((type != mNetworkPreference) 2351 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2352 || (mNetworkPreference == mActiveDefaultNetwork)) { 2353 return false; 2354 } 2355 return true; 2356 } 2357 2358 private void handleConnect(NetworkInfo info) { 2359 final int newNetType = info.getType(); 2360 2361 // snapshot isFailover, because sendConnectedBroadcast() resets it 2362 boolean isFailover = info.isFailover(); 2363 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2364 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2365 2366 if (VDBG) { 2367 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2368 + " isFailover" + isFailover); 2369 } 2370 2371 // if this is a default net and other default is running 2372 // kill the one not preferred 2373 if (mNetConfigs[newNetType].isDefault()) { 2374 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2375 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2376 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2377 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2378 // tear down the other 2379 NetworkStateTracker otherNet = 2380 mNetTrackers[mActiveDefaultNetwork]; 2381 if (DBG) { 2382 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2383 " teardown"); 2384 } 2385 if (!teardown(otherNet)) { 2386 loge("Network declined teardown request"); 2387 teardown(thisNet); 2388 return; 2389 } 2390 } else { 2391 //TODO - remove 2392 loge("network teardown skipped due to net.teardownPolicy setting"); 2393 } 2394 } else { 2395 // don't accept this one 2396 if (VDBG) { 2397 log("Not broadcasting CONNECT_ACTION " + 2398 "to torn down network " + info.getTypeName()); 2399 } 2400 teardown(thisNet); 2401 return; 2402 } 2403 } 2404 int thisNetId = nextNetId(); 2405 thisNet.setNetId(thisNetId); 2406 try { 2407// mNetd.createNetwork(thisNetId, thisIface); 2408 } catch (Exception e) { 2409 loge("Exception creating network :" + e); 2410 teardown(thisNet); 2411 return; 2412 } 2413 setupDataActivityTracking(newNetType); 2414 synchronized (ConnectivityService.this) { 2415 // have a new default network, release the transition wakelock in a second 2416 // if it's held. The second pause is to allow apps to reconnect over the 2417 // new network 2418 if (mNetTransitionWakeLock.isHeld()) { 2419 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2420 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2421 mNetTransitionWakeLockSerialNumber, 0), 2422 1000); 2423 } 2424 } 2425 mActiveDefaultNetwork = newNetType; 2426 // this will cause us to come up initially as unconnected and switching 2427 // to connected after our normal pause unless somebody reports us as reall 2428 // disconnected 2429 mDefaultInetConditionPublished = 0; 2430 mDefaultConnectionSequence++; 2431 mInetConditionChangeInFlight = false; 2432 // Don't do this - if we never sign in stay, grey 2433 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2434 updateNetworkSettings(thisNet); 2435 } else { 2436 int thisNetId = nextNetId(); 2437 thisNet.setNetId(thisNetId); 2438 try { 2439// mNetd.createNetwork(thisNetId, thisIface); 2440 } catch (Exception e) { 2441 loge("Exception creating network :" + e); 2442 teardown(thisNet); 2443 return; 2444 } 2445 } 2446 thisNet.setTeardownRequested(false); 2447 updateMtuSizeSettings(thisNet); 2448 handleConnectivityChange(newNetType, false); 2449 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2450 2451 // notify battery stats service about this network 2452 if (thisIface != null) { 2453 try { 2454 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2455 } catch (RemoteException e) { 2456 // ignored; service lives in system_server 2457 } 2458 } 2459 } 2460 2461 /** @hide */ 2462 @Override 2463 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2464 enforceConnectivityInternalPermission(); 2465 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2466 mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2467 } 2468 2469 /** 2470 * Setup data activity tracking for the given network interface. 2471 * 2472 * Every {@code setupDataActivityTracking} should be paired with a 2473 * {@link #removeDataActivityTracking} for cleanup. 2474 */ 2475 private void setupDataActivityTracking(int type) { 2476 final NetworkStateTracker thisNet = mNetTrackers[type]; 2477 final String iface = thisNet.getLinkProperties().getInterfaceName(); 2478 2479 final int timeout; 2480 2481 if (ConnectivityManager.isNetworkTypeMobile(type)) { 2482 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2483 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2484 5); 2485 // Canonicalize mobile network type 2486 type = ConnectivityManager.TYPE_MOBILE; 2487 } else if (ConnectivityManager.TYPE_WIFI == type) { 2488 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2489 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2490 0); 2491 } else { 2492 // do not track any other networks 2493 timeout = 0; 2494 } 2495 2496 if (timeout > 0 && iface != null) { 2497 try { 2498 mNetd.addIdleTimer(iface, timeout, type); 2499 } catch (Exception e) { 2500 // You shall not crash! 2501 loge("Exception in setupDataActivityTracking " + e); 2502 } 2503 } 2504 } 2505 2506 /** 2507 * Remove data activity tracking when network disconnects. 2508 */ 2509 private void removeDataActivityTracking(int type) { 2510 final NetworkStateTracker net = mNetTrackers[type]; 2511 final String iface = net.getLinkProperties().getInterfaceName(); 2512 2513 if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) || 2514 ConnectivityManager.TYPE_WIFI == type)) { 2515 try { 2516 // the call fails silently if no idletimer setup for this interface 2517 mNetd.removeIdleTimer(iface); 2518 } catch (Exception e) { 2519 loge("Exception in removeDataActivityTracking " + e); 2520 } 2521 } 2522 } 2523 2524 /** 2525 * After a change in the connectivity state of a network. We're mainly 2526 * concerned with making sure that the list of DNS servers is set up 2527 * according to which networks are connected, and ensuring that the 2528 * right routing table entries exist. 2529 */ 2530 private void handleConnectivityChange(int netType, boolean doReset) { 2531 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2532 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2533 if (VDBG) { 2534 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2535 + " resetMask=" + resetMask); 2536 } 2537 2538 /* 2539 * If a non-default network is enabled, add the host routes that 2540 * will allow it's DNS servers to be accessed. 2541 */ 2542 handleDnsConfigurationChange(netType); 2543 2544 LinkProperties curLp = mCurrentLinkProperties[netType]; 2545 LinkProperties newLp = null; 2546 2547 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2548 newLp = mNetTrackers[netType].getLinkProperties(); 2549 if (VDBG) { 2550 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2551 " doReset=" + doReset + " resetMask=" + resetMask + 2552 "\n curLp=" + curLp + 2553 "\n newLp=" + newLp); 2554 } 2555 2556 if (curLp != null) { 2557 if (curLp.isIdenticalInterfaceName(newLp)) { 2558 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2559 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2560 for (LinkAddress linkAddr : car.removed) { 2561 if (linkAddr.getAddress() instanceof Inet4Address) { 2562 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2563 } 2564 if (linkAddr.getAddress() instanceof Inet6Address) { 2565 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2566 } 2567 } 2568 if (DBG) { 2569 log("handleConnectivityChange: addresses changed" + 2570 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2571 "\n car=" + car); 2572 } 2573 } else { 2574 if (VDBG) { 2575 log("handleConnectivityChange: addresses are the same reset per" + 2576 " doReset linkProperty[" + netType + "]:" + 2577 " resetMask=" + resetMask); 2578 } 2579 } 2580 } else { 2581 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2582 if (DBG) { 2583 log("handleConnectivityChange: interface not not equivalent reset both" + 2584 " linkProperty[" + netType + "]:" + 2585 " resetMask=" + resetMask); 2586 } 2587 } 2588 } 2589 if (mNetConfigs[netType].isDefault()) { 2590 handleApplyDefaultProxy(newLp.getHttpProxy()); 2591 } 2592 } else { 2593 if (VDBG) { 2594 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2595 " doReset=" + doReset + " resetMask=" + resetMask + 2596 "\n curLp=" + curLp + 2597 "\n newLp= null"); 2598 } 2599 } 2600 mCurrentLinkProperties[netType] = newLp; 2601 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt); 2602 2603 if (resetMask != 0 || resetDns) { 2604 if (VDBG) log("handleConnectivityChange: resetting"); 2605 if (curLp != null) { 2606 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2607 for (String iface : curLp.getAllInterfaceNames()) { 2608 if (TextUtils.isEmpty(iface) == false) { 2609 if (resetMask != 0) { 2610 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2611 NetworkUtils.resetConnections(iface, resetMask); 2612 2613 // Tell VPN the interface is down. It is a temporary 2614 // but effective fix to make VPN aware of the change. 2615 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2616 synchronized(mVpns) { 2617 for (int i = 0; i < mVpns.size(); i++) { 2618 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2619 } 2620 } 2621 } 2622 } 2623 if (resetDns) { 2624 flushVmDnsCache(); 2625 if (VDBG) log("resetting DNS cache for " + iface); 2626 try { 2627 mNetd.flushInterfaceDnsCache(iface); 2628 } catch (Exception e) { 2629 // never crash - catch them all 2630 if (DBG) loge("Exception resetting dns cache: " + e); 2631 } 2632 } 2633 } else { 2634 loge("Can't reset connection for type "+netType); 2635 } 2636 } 2637 } 2638 } 2639 2640 // Update 464xlat state. 2641 NetworkStateTracker tracker = mNetTrackers[netType]; 2642 if (mClat.requiresClat(netType, tracker)) { 2643 2644 // If the connection was previously using clat, but is not using it now, stop the clat 2645 // daemon. Normally, this happens automatically when the connection disconnects, but if 2646 // the disconnect is not reported, or if the connection's LinkProperties changed for 2647 // some other reason (e.g., handoff changes the IP addresses on the link), it would 2648 // still be running. If it's not running, then stopping it is a no-op. 2649 if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) { 2650 mClat.stopClat(); 2651 } 2652 // If the link requires clat to be running, then start the daemon now. 2653 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2654 mClat.startClat(tracker); 2655 } else { 2656 mClat.stopClat(); 2657 } 2658 } 2659 2660 // TODO: Temporary notifying upstread change to Tethering. 2661 // @see bug/4455071 2662 /** Notify TetheringService if interface name has been changed. */ 2663 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2664 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2665 if (isTetheringSupported()) { 2666 mTethering.handleTetherIfaceChange(); 2667 } 2668 } 2669 } 2670 2671 /** 2672 * Add and remove routes using the old properties (null if not previously connected), 2673 * new properties (null if becoming disconnected). May even be double null, which 2674 * is a noop. 2675 * Uses isLinkDefault to determine if default routes should be set or conversely if 2676 * host routes should be set to the dns servers 2677 * returns a boolean indicating the routes changed 2678 */ 2679 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2680 boolean isLinkDefault, boolean exempt) { 2681 Collection<RouteInfo> routesToAdd = null; 2682 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2683 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2684 if (curLp != null) { 2685 // check for the delta between the current set and the new 2686 routeDiff = curLp.compareAllRoutes(newLp); 2687 dnsDiff = curLp.compareDnses(newLp); 2688 } else if (newLp != null) { 2689 routeDiff.added = newLp.getAllRoutes(); 2690 dnsDiff.added = newLp.getDnses(); 2691 } 2692 2693 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2694 2695 for (RouteInfo r : routeDiff.removed) { 2696 if (isLinkDefault || ! r.isDefaultRoute()) { 2697 if (VDBG) log("updateRoutes: default remove route r=" + r); 2698 removeRoute(curLp, r, TO_DEFAULT_TABLE); 2699 } 2700 if (isLinkDefault == false) { 2701 // remove from a secondary route table 2702 removeRoute(curLp, r, TO_SECONDARY_TABLE); 2703 } 2704 } 2705 2706 if (!isLinkDefault) { 2707 // handle DNS routes 2708 if (routesChanged) { 2709 // routes changed - remove all old dns entries and add new 2710 if (curLp != null) { 2711 for (InetAddress oldDns : curLp.getDnses()) { 2712 removeRouteToAddress(curLp, oldDns); 2713 } 2714 } 2715 if (newLp != null) { 2716 for (InetAddress newDns : newLp.getDnses()) { 2717 addRouteToAddress(newLp, newDns, exempt); 2718 } 2719 } 2720 } else { 2721 // no change in routes, check for change in dns themselves 2722 for (InetAddress oldDns : dnsDiff.removed) { 2723 removeRouteToAddress(curLp, oldDns); 2724 } 2725 for (InetAddress newDns : dnsDiff.added) { 2726 addRouteToAddress(newLp, newDns, exempt); 2727 } 2728 } 2729 } 2730 2731 for (RouteInfo r : routeDiff.added) { 2732 if (isLinkDefault || ! r.isDefaultRoute()) { 2733 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt); 2734 } else { 2735 // add to a secondary route table 2736 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT); 2737 2738 // many radios add a default route even when we don't want one. 2739 // remove the default route unless somebody else has asked for it 2740 String ifaceName = newLp.getInterfaceName(); 2741 synchronized (mRoutesLock) { 2742 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2743 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2744 try { 2745 mNetd.removeRoute(ifaceName, r); 2746 } catch (Exception e) { 2747 // never crash - catch them all 2748 if (DBG) loge("Exception trying to remove a route: " + e); 2749 } 2750 } 2751 } 2752 } 2753 } 2754 2755 return routesChanged; 2756 } 2757 2758 /** 2759 * Reads the network specific MTU size from reources. 2760 * and set it on it's iface. 2761 */ 2762 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2763 final String iface = nt.getLinkProperties().getInterfaceName(); 2764 final int mtu = nt.getLinkProperties().getMtu(); 2765 2766 if (mtu < 68 || mtu > 10000) { 2767 loge("Unexpected mtu value: " + mtu + ", " + nt); 2768 return; 2769 } 2770 2771 try { 2772 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2773 mNetd.setMtu(iface, mtu); 2774 } catch (Exception e) { 2775 Slog.e(TAG, "exception in setMtu()" + e); 2776 } 2777 } 2778 2779 /** 2780 * Reads the network specific TCP buffer sizes from SystemProperties 2781 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2782 * wide use 2783 */ 2784 private void updateNetworkSettings(NetworkStateTracker nt) { 2785 String key = nt.getTcpBufferSizesPropName(); 2786 String bufferSizes = key == null ? null : SystemProperties.get(key); 2787 2788 if (TextUtils.isEmpty(bufferSizes)) { 2789 if (VDBG) log(key + " not found in system properties. Using defaults"); 2790 2791 // Setting to default values so we won't be stuck to previous values 2792 key = "net.tcp.buffersize.default"; 2793 bufferSizes = SystemProperties.get(key); 2794 } 2795 2796 // Set values in kernel 2797 if (bufferSizes.length() != 0) { 2798 if (VDBG) { 2799 log("Setting TCP values: [" + bufferSizes 2800 + "] which comes from [" + key + "]"); 2801 } 2802 setBufferSize(bufferSizes); 2803 } 2804 2805 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2806 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2807 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2808 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2809 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2810 if (rwndValue != 0) { 2811 SystemProperties.set(sysctlKey, rwndValue.toString()); 2812 } 2813 } 2814 2815 /** 2816 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2817 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2818 * 2819 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2820 * writeMin, writeInitial, writeMax" 2821 */ 2822 private void setBufferSize(String bufferSizes) { 2823 try { 2824 String[] values = bufferSizes.split(","); 2825 2826 if (values.length == 6) { 2827 final String prefix = "/sys/kernel/ipv4/tcp_"; 2828 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2829 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2830 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2831 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2832 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2833 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2834 } else { 2835 loge("Invalid buffersize string: " + bufferSizes); 2836 } 2837 } catch (IOException e) { 2838 loge("Can't set tcp buffer sizes:" + e); 2839 } 2840 } 2841 2842 /** 2843 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2844 * on the highest priority active net which this process requested. 2845 * If there aren't any, clear it out 2846 */ 2847 private void reassessPidDns(int pid, boolean doBump) 2848 { 2849 if (VDBG) log("reassessPidDns for pid " + pid); 2850 Integer myPid = new Integer(pid); 2851 for(int i : mPriorityList) { 2852 if (mNetConfigs[i].isDefault()) { 2853 continue; 2854 } 2855 NetworkStateTracker nt = mNetTrackers[i]; 2856 if (nt.getNetworkInfo().isConnected() && 2857 !nt.isTeardownRequested()) { 2858 LinkProperties p = nt.getLinkProperties(); 2859 if (p == null) continue; 2860 if (mNetRequestersPids[i].contains(myPid)) { 2861 try { 2862 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2863 } catch (Exception e) { 2864 Slog.e(TAG, "exception reasseses pid dns: " + e); 2865 } 2866 return; 2867 } 2868 } 2869 } 2870 // nothing found - delete 2871 try { 2872 mNetd.clearDnsInterfaceForPid(pid); 2873 } catch (Exception e) { 2874 Slog.e(TAG, "exception clear interface from pid: " + e); 2875 } 2876 } 2877 2878 private void flushVmDnsCache() { 2879 /* 2880 * Tell the VMs to toss their DNS caches 2881 */ 2882 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2883 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2884 /* 2885 * Connectivity events can happen before boot has completed ... 2886 */ 2887 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2888 final long ident = Binder.clearCallingIdentity(); 2889 try { 2890 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2891 } finally { 2892 Binder.restoreCallingIdentity(ident); 2893 } 2894 } 2895 2896 // Caller must grab mDnsLock. 2897 private void updateDnsLocked(String network, String iface, 2898 Collection<InetAddress> dnses, String domains, boolean defaultDns) { 2899 int last = 0; 2900 if (dnses.size() == 0 && mDefaultDns != null) { 2901 dnses = new ArrayList(); 2902 dnses.add(mDefaultDns); 2903 if (DBG) { 2904 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2905 } 2906 } 2907 2908 try { 2909 mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains); 2910 if (defaultDns) { 2911 mNetd.setDefaultInterfaceForDns(iface); 2912 } 2913 2914 for (InetAddress dns : dnses) { 2915 ++last; 2916 String key = "net.dns" + last; 2917 String value = dns.getHostAddress(); 2918 SystemProperties.set(key, value); 2919 } 2920 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2921 String key = "net.dns" + i; 2922 SystemProperties.set(key, ""); 2923 } 2924 mNumDnsEntries = last; 2925 } catch (Exception e) { 2926 loge("exception setting default dns interface: " + e); 2927 } 2928 } 2929 2930 private void handleDnsConfigurationChange(int netType) { 2931 // add default net's dns entries 2932 NetworkStateTracker nt = mNetTrackers[netType]; 2933 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2934 LinkProperties p = nt.getLinkProperties(); 2935 if (p == null) return; 2936 Collection<InetAddress> dnses = p.getDnses(); 2937 if (mNetConfigs[netType].isDefault()) { 2938 String network = nt.getNetworkInfo().getTypeName(); 2939 synchronized (mDnsLock) { 2940 updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true); 2941 } 2942 } else { 2943 try { 2944 mNetd.setDnsServersForInterface(p.getInterfaceName(), 2945 NetworkUtils.makeStrings(dnses), p.getDomains()); 2946 } catch (Exception e) { 2947 if (DBG) loge("exception setting dns servers: " + e); 2948 } 2949 // set per-pid dns for attached secondary nets 2950 List<Integer> pids = mNetRequestersPids[netType]; 2951 for (Integer pid : pids) { 2952 try { 2953 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2954 } catch (Exception e) { 2955 Slog.e(TAG, "exception setting interface for pid: " + e); 2956 } 2957 } 2958 } 2959 flushVmDnsCache(); 2960 } 2961 } 2962 2963 private int getRestoreDefaultNetworkDelay(int networkType) { 2964 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2965 NETWORK_RESTORE_DELAY_PROP_NAME); 2966 if(restoreDefaultNetworkDelayStr != null && 2967 restoreDefaultNetworkDelayStr.length() != 0) { 2968 try { 2969 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2970 } catch (NumberFormatException e) { 2971 } 2972 } 2973 // if the system property isn't set, use the value for the apn type 2974 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2975 2976 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2977 (mNetConfigs[networkType] != null)) { 2978 ret = mNetConfigs[networkType].restoreTime; 2979 } 2980 return ret; 2981 } 2982 2983 @Override 2984 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2985 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2986 if (mContext.checkCallingOrSelfPermission( 2987 android.Manifest.permission.DUMP) 2988 != PackageManager.PERMISSION_GRANTED) { 2989 pw.println("Permission Denial: can't dump ConnectivityService " + 2990 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2991 Binder.getCallingUid()); 2992 return; 2993 } 2994 2995 // TODO: add locking to get atomic snapshot 2996 pw.println(); 2997 for (int i = 0; i < mNetTrackers.length; i++) { 2998 final NetworkStateTracker nst = mNetTrackers[i]; 2999 if (nst != null) { 3000 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 3001 pw.increaseIndent(); 3002 if (nst.getNetworkInfo().isConnected()) { 3003 pw.println("Active network: " + nst.getNetworkInfo(). 3004 getTypeName()); 3005 } 3006 pw.println(nst.getNetworkInfo()); 3007 pw.println(nst.getLinkProperties()); 3008 pw.println(nst); 3009 pw.println(); 3010 pw.decreaseIndent(); 3011 } 3012 } 3013 3014 pw.print("Active default network: "); pw.println(getNetworkTypeName(mActiveDefaultNetwork)); 3015 pw.println(); 3016 3017 pw.println("Network Requester Pids:"); 3018 pw.increaseIndent(); 3019 for (int net : mPriorityList) { 3020 String pidString = net + ": "; 3021 for (Integer pid : mNetRequestersPids[net]) { 3022 pidString = pidString + pid.toString() + ", "; 3023 } 3024 pw.println(pidString); 3025 } 3026 pw.println(); 3027 pw.decreaseIndent(); 3028 3029 pw.println("FeatureUsers:"); 3030 pw.increaseIndent(); 3031 for (Object requester : mFeatureUsers) { 3032 pw.println(requester.toString()); 3033 } 3034 pw.println(); 3035 pw.decreaseIndent(); 3036 3037 synchronized (this) { 3038 pw.println("NetworkTranstionWakeLock is currently " + 3039 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3040 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3041 } 3042 pw.println(); 3043 3044 mTethering.dump(fd, pw, args); 3045 3046 if (mInetLog != null) { 3047 pw.println(); 3048 pw.println("Inet condition reports:"); 3049 pw.increaseIndent(); 3050 for(int i = 0; i < mInetLog.size(); i++) { 3051 pw.println(mInetLog.get(i)); 3052 } 3053 pw.decreaseIndent(); 3054 } 3055 } 3056 3057 // must be stateless - things change under us. 3058 private class NetworkStateTrackerHandler extends Handler { 3059 public NetworkStateTrackerHandler(Looper looper) { 3060 super(looper); 3061 } 3062 3063 @Override 3064 public void handleMessage(Message msg) { 3065 NetworkInfo info; 3066 switch (msg.what) { 3067 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3068 AsyncChannel ac = (AsyncChannel) msg.obj; 3069 if (mNetworkFactories.contains(ac)) { 3070 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3071 if (VDBG) log("NetworkFactory connected"); 3072 for (int i = 0; i < mNetworkRequests.size(); i++) { 3073 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, 3074 mNetworkRequests.valueAt(i)); 3075 } 3076 } else { 3077 loge("Error connecting NetworkFactory"); 3078 mNetworkFactories.remove((AsyncChannel) msg.obj); 3079 } 3080 } 3081 break; 3082 } 3083 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3084 info = (NetworkInfo) msg.obj; 3085 NetworkInfo.State state = info.getState(); 3086 3087 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3088 (state == NetworkInfo.State.DISCONNECTED) || 3089 (state == NetworkInfo.State.SUSPENDED)) { 3090 log("ConnectivityChange for " + 3091 info.getTypeName() + ": " + 3092 state + "/" + info.getDetailedState()); 3093 } 3094 3095 // Since mobile has the notion of a network/apn that can be used for 3096 // provisioning we need to check every time we're connected as 3097 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3098 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3099 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3100 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3101 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3102 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3103 Settings.Global.DEVICE_PROVISIONED, 0)) 3104 && (((state == NetworkInfo.State.CONNECTED) 3105 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3106 || info.isConnectedToProvisioningNetwork())) { 3107 log("ConnectivityChange checkMobileProvisioning for" 3108 + " TYPE_MOBILE or ProvisioningNetwork"); 3109 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3110 } 3111 3112 EventLogTags.writeConnectivityStateChanged( 3113 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3114 3115 if (info.getDetailedState() == 3116 NetworkInfo.DetailedState.FAILED) { 3117 handleConnectionFailure(info); 3118 } else if (info.isConnectedToProvisioningNetwork()) { 3119 /** 3120 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3121 * for now its an in between network, its a network that 3122 * is actually a default network but we don't want it to be 3123 * announced as such to keep background applications from 3124 * trying to use it. It turns out that some still try so we 3125 * take the additional step of clearing any default routes 3126 * to the link that may have incorrectly setup by the lower 3127 * levels. 3128 */ 3129 LinkProperties lp = getLinkProperties(info.getType()); 3130 if (DBG) { 3131 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3132 } 3133 3134 // Clear any default routes setup by the radio so 3135 // any activity by applications trying to use this 3136 // connection will fail until the provisioning network 3137 // is enabled. 3138 for (RouteInfo r : lp.getRoutes()) { 3139 removeRoute(lp, r, TO_DEFAULT_TABLE); 3140 } 3141 } else if (state == NetworkInfo.State.DISCONNECTED) { 3142 handleDisconnect(info); 3143 } else if (state == NetworkInfo.State.SUSPENDED) { 3144 // TODO: need to think this over. 3145 // the logic here is, handle SUSPENDED the same as 3146 // DISCONNECTED. The only difference being we are 3147 // broadcasting an intent with NetworkInfo that's 3148 // suspended. This allows the applications an 3149 // opportunity to handle DISCONNECTED and SUSPENDED 3150 // differently, or not. 3151 handleDisconnect(info); 3152 } else if (state == NetworkInfo.State.CONNECTED) { 3153 handleConnect(info); 3154 } 3155 if (mLockdownTracker != null) { 3156 mLockdownTracker.onNetworkInfoChanged(info); 3157 } 3158 break; 3159 } 3160 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3161 info = (NetworkInfo) msg.obj; 3162 // TODO: Temporary allowing network configuration 3163 // change not resetting sockets. 3164 // @see bug/4455071 3165 handleConnectivityChange(info.getType(), false); 3166 break; 3167 } 3168 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3169 info = (NetworkInfo) msg.obj; 3170 int type = info.getType(); 3171 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3172 break; 3173 } 3174 } 3175 } 3176 } 3177 3178 private class InternalHandler extends Handler { 3179 public InternalHandler(Looper looper) { 3180 super(looper); 3181 } 3182 3183 @Override 3184 public void handleMessage(Message msg) { 3185 NetworkInfo info; 3186 switch (msg.what) { 3187 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3188 String causedBy = null; 3189 synchronized (ConnectivityService.this) { 3190 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3191 mNetTransitionWakeLock.isHeld()) { 3192 mNetTransitionWakeLock.release(); 3193 causedBy = mNetTransitionWakeLockCausedBy; 3194 } 3195 } 3196 if (causedBy != null) { 3197 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3198 } 3199 break; 3200 } 3201 case EVENT_RESTORE_DEFAULT_NETWORK: { 3202 FeatureUser u = (FeatureUser)msg.obj; 3203 u.expire(); 3204 break; 3205 } 3206 case EVENT_INET_CONDITION_CHANGE: { 3207 int netType = msg.arg1; 3208 int condition = msg.arg2; 3209 handleInetConditionChange(netType, condition); 3210 break; 3211 } 3212 case EVENT_INET_CONDITION_HOLD_END: { 3213 int netType = msg.arg1; 3214 int sequence = msg.arg2; 3215 handleInetConditionHoldEnd(netType, sequence); 3216 break; 3217 } 3218 case EVENT_SET_NETWORK_PREFERENCE: { 3219 int preference = msg.arg1; 3220 handleSetNetworkPreference(preference); 3221 break; 3222 } 3223 case EVENT_SET_MOBILE_DATA: { 3224 boolean enabled = (msg.arg1 == ENABLED); 3225 handleSetMobileData(enabled); 3226 break; 3227 } 3228 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3229 handleDeprecatedGlobalHttpProxy(); 3230 break; 3231 } 3232 case EVENT_SET_DEPENDENCY_MET: { 3233 boolean met = (msg.arg1 == ENABLED); 3234 handleSetDependencyMet(msg.arg2, met); 3235 break; 3236 } 3237 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3238 Intent intent = (Intent)msg.obj; 3239 sendStickyBroadcast(intent); 3240 break; 3241 } 3242 case EVENT_SET_POLICY_DATA_ENABLE: { 3243 final int networkType = msg.arg1; 3244 final boolean enabled = msg.arg2 == ENABLED; 3245 handleSetPolicyDataEnable(networkType, enabled); 3246 break; 3247 } 3248 case EVENT_VPN_STATE_CHANGED: { 3249 if (mLockdownTracker != null) { 3250 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3251 } 3252 break; 3253 } 3254 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3255 int tag = mEnableFailFastMobileDataTag.get(); 3256 if (msg.arg1 == tag) { 3257 MobileDataStateTracker mobileDst = 3258 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3259 if (mobileDst != null) { 3260 mobileDst.setEnableFailFastMobileData(msg.arg2); 3261 } 3262 } else { 3263 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3264 + " != tag:" + tag); 3265 } 3266 break; 3267 } 3268 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3269 handleNetworkSamplingTimeout(); 3270 break; 3271 } 3272 case EVENT_PROXY_HAS_CHANGED: { 3273 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3274 break; 3275 } 3276 case EVENT_REGISTER_NETWORK_FACTORY: { 3277 handleRegisterNetworkFactory((Messenger)msg.obj); 3278 break; 3279 } 3280 } 3281 } 3282 } 3283 3284 // javadoc from interface 3285 public int tether(String iface) { 3286 enforceTetherChangePermission(); 3287 3288 if (isTetheringSupported()) { 3289 return mTethering.tether(iface); 3290 } else { 3291 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3292 } 3293 } 3294 3295 // javadoc from interface 3296 public int untether(String iface) { 3297 enforceTetherChangePermission(); 3298 3299 if (isTetheringSupported()) { 3300 return mTethering.untether(iface); 3301 } else { 3302 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3303 } 3304 } 3305 3306 // javadoc from interface 3307 public int getLastTetherError(String iface) { 3308 enforceTetherAccessPermission(); 3309 3310 if (isTetheringSupported()) { 3311 return mTethering.getLastTetherError(iface); 3312 } else { 3313 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3314 } 3315 } 3316 3317 // TODO - proper iface API for selection by property, inspection, etc 3318 public String[] getTetherableUsbRegexs() { 3319 enforceTetherAccessPermission(); 3320 if (isTetheringSupported()) { 3321 return mTethering.getTetherableUsbRegexs(); 3322 } else { 3323 return new String[0]; 3324 } 3325 } 3326 3327 public String[] getTetherableWifiRegexs() { 3328 enforceTetherAccessPermission(); 3329 if (isTetheringSupported()) { 3330 return mTethering.getTetherableWifiRegexs(); 3331 } else { 3332 return new String[0]; 3333 } 3334 } 3335 3336 public String[] getTetherableBluetoothRegexs() { 3337 enforceTetherAccessPermission(); 3338 if (isTetheringSupported()) { 3339 return mTethering.getTetherableBluetoothRegexs(); 3340 } else { 3341 return new String[0]; 3342 } 3343 } 3344 3345 public int setUsbTethering(boolean enable) { 3346 enforceTetherChangePermission(); 3347 if (isTetheringSupported()) { 3348 return mTethering.setUsbTethering(enable); 3349 } else { 3350 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3351 } 3352 } 3353 3354 // TODO - move iface listing, queries, etc to new module 3355 // javadoc from interface 3356 public String[] getTetherableIfaces() { 3357 enforceTetherAccessPermission(); 3358 return mTethering.getTetherableIfaces(); 3359 } 3360 3361 public String[] getTetheredIfaces() { 3362 enforceTetherAccessPermission(); 3363 return mTethering.getTetheredIfaces(); 3364 } 3365 3366 public String[] getTetheringErroredIfaces() { 3367 enforceTetherAccessPermission(); 3368 return mTethering.getErroredIfaces(); 3369 } 3370 3371 // if ro.tether.denied = true we default to no tethering 3372 // gservices could set the secure setting to 1 though to enable it on a build where it 3373 // had previously been turned off. 3374 public boolean isTetheringSupported() { 3375 enforceTetherAccessPermission(); 3376 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3377 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3378 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3379 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3380 mTethering.getTetherableWifiRegexs().length != 0 || 3381 mTethering.getTetherableBluetoothRegexs().length != 0) && 3382 mTethering.getUpstreamIfaceTypes().length != 0); 3383 } 3384 3385 // An API NetworkStateTrackers can call when they lose their network. 3386 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3387 // whichever happens first. The timer is started by the first caller and not 3388 // restarted by subsequent callers. 3389 public void requestNetworkTransitionWakelock(String forWhom) { 3390 enforceConnectivityInternalPermission(); 3391 synchronized (this) { 3392 if (mNetTransitionWakeLock.isHeld()) return; 3393 mNetTransitionWakeLockSerialNumber++; 3394 mNetTransitionWakeLock.acquire(); 3395 mNetTransitionWakeLockCausedBy = forWhom; 3396 } 3397 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3398 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3399 mNetTransitionWakeLockSerialNumber, 0), 3400 mNetTransitionWakeLockTimeout); 3401 return; 3402 } 3403 3404 // 100 percent is full good, 0 is full bad. 3405 public void reportInetCondition(int networkType, int percentage) { 3406 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3407 mContext.enforceCallingOrSelfPermission( 3408 android.Manifest.permission.STATUS_BAR, 3409 "ConnectivityService"); 3410 3411 if (DBG) { 3412 int pid = getCallingPid(); 3413 int uid = getCallingUid(); 3414 String s = pid + "(" + uid + ") reports inet is " + 3415 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3416 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3417 mInetLog.add(s); 3418 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3419 mInetLog.remove(0); 3420 } 3421 } 3422 mHandler.sendMessage(mHandler.obtainMessage( 3423 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3424 } 3425 3426 private void handleInetConditionChange(int netType, int condition) { 3427 if (mActiveDefaultNetwork == -1) { 3428 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3429 return; 3430 } 3431 if (mActiveDefaultNetwork != netType) { 3432 if (DBG) log("handleInetConditionChange: net=" + netType + 3433 " != default=" + mActiveDefaultNetwork + " - ignore"); 3434 return; 3435 } 3436 if (VDBG) { 3437 log("handleInetConditionChange: net=" + 3438 netType + ", condition=" + condition + 3439 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3440 } 3441 mDefaultInetCondition = condition; 3442 int delay; 3443 if (mInetConditionChangeInFlight == false) { 3444 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3445 // setup a new hold to debounce this 3446 if (mDefaultInetCondition > 50) { 3447 delay = Settings.Global.getInt(mContext.getContentResolver(), 3448 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3449 } else { 3450 delay = Settings.Global.getInt(mContext.getContentResolver(), 3451 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3452 } 3453 mInetConditionChangeInFlight = true; 3454 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3455 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3456 } else { 3457 // we've set the new condition, when this hold ends that will get picked up 3458 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3459 } 3460 } 3461 3462 private void handleInetConditionHoldEnd(int netType, int sequence) { 3463 if (DBG) { 3464 log("handleInetConditionHoldEnd: net=" + netType + 3465 ", condition=" + mDefaultInetCondition + 3466 ", published condition=" + mDefaultInetConditionPublished); 3467 } 3468 mInetConditionChangeInFlight = false; 3469 3470 if (mActiveDefaultNetwork == -1) { 3471 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3472 return; 3473 } 3474 if (mDefaultConnectionSequence != sequence) { 3475 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3476 return; 3477 } 3478 // TODO: Figure out why this optimization sometimes causes a 3479 // change in mDefaultInetCondition to be missed and the 3480 // UI to not be updated. 3481 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3482 // if (DBG) log("no change in condition - aborting"); 3483 // return; 3484 //} 3485 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3486 if (networkInfo.isConnected() == false) { 3487 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3488 return; 3489 } 3490 mDefaultInetConditionPublished = mDefaultInetCondition; 3491 sendInetConditionBroadcast(networkInfo); 3492 return; 3493 } 3494 3495 public ProxyInfo getProxy() { 3496 // this information is already available as a world read/writable jvm property 3497 // so this API change wouldn't have a benifit. It also breaks the passing 3498 // of proxy info to all the JVMs. 3499 // enforceAccessPermission(); 3500 synchronized (mProxyLock) { 3501 ProxyInfo ret = mGlobalProxy; 3502 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3503 return ret; 3504 } 3505 } 3506 3507 public void setGlobalProxy(ProxyInfo proxyProperties) { 3508 enforceConnectivityInternalPermission(); 3509 3510 synchronized (mProxyLock) { 3511 if (proxyProperties == mGlobalProxy) return; 3512 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3513 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3514 3515 String host = ""; 3516 int port = 0; 3517 String exclList = ""; 3518 String pacFileUrl = ""; 3519 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3520 (proxyProperties.getPacFileUrl() != null))) { 3521 if (!proxyProperties.isValid()) { 3522 if (DBG) 3523 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3524 return; 3525 } 3526 mGlobalProxy = new ProxyInfo(proxyProperties); 3527 host = mGlobalProxy.getHost(); 3528 port = mGlobalProxy.getPort(); 3529 exclList = mGlobalProxy.getExclusionListAsString(); 3530 if (proxyProperties.getPacFileUrl() != null) { 3531 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3532 } 3533 } else { 3534 mGlobalProxy = null; 3535 } 3536 ContentResolver res = mContext.getContentResolver(); 3537 final long token = Binder.clearCallingIdentity(); 3538 try { 3539 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3540 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3541 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3542 exclList); 3543 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3544 } finally { 3545 Binder.restoreCallingIdentity(token); 3546 } 3547 } 3548 3549 if (mGlobalProxy == null) { 3550 proxyProperties = mDefaultProxy; 3551 } 3552 sendProxyBroadcast(proxyProperties); 3553 } 3554 3555 private void loadGlobalProxy() { 3556 ContentResolver res = mContext.getContentResolver(); 3557 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3558 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3559 String exclList = Settings.Global.getString(res, 3560 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3561 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3562 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3563 ProxyInfo proxyProperties; 3564 if (!TextUtils.isEmpty(pacFileUrl)) { 3565 proxyProperties = new ProxyInfo(pacFileUrl); 3566 } else { 3567 proxyProperties = new ProxyInfo(host, port, exclList); 3568 } 3569 if (!proxyProperties.isValid()) { 3570 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3571 return; 3572 } 3573 3574 synchronized (mProxyLock) { 3575 mGlobalProxy = proxyProperties; 3576 } 3577 } 3578 } 3579 3580 public ProxyInfo getGlobalProxy() { 3581 // this information is already available as a world read/writable jvm property 3582 // so this API change wouldn't have a benifit. It also breaks the passing 3583 // of proxy info to all the JVMs. 3584 // enforceAccessPermission(); 3585 synchronized (mProxyLock) { 3586 return mGlobalProxy; 3587 } 3588 } 3589 3590 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3591 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3592 && (proxy.getPacFileUrl() == null)) { 3593 proxy = null; 3594 } 3595 synchronized (mProxyLock) { 3596 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3597 if (mDefaultProxy == proxy) return; // catches repeated nulls 3598 if (proxy != null && !proxy.isValid()) { 3599 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3600 return; 3601 } 3602 3603 // This call could be coming from the PacManager, containing the port of the local 3604 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3605 // global (to get the correct local port), and send a broadcast. 3606 // TODO: Switch PacManager to have its own message to send back rather than 3607 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3608 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3609 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3610 mGlobalProxy = proxy; 3611 sendProxyBroadcast(mGlobalProxy); 3612 return; 3613 } 3614 mDefaultProxy = proxy; 3615 3616 if (mGlobalProxy != null) return; 3617 if (!mDefaultProxyDisabled) { 3618 sendProxyBroadcast(proxy); 3619 } 3620 } 3621 } 3622 3623 private void handleDeprecatedGlobalHttpProxy() { 3624 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3625 Settings.Global.HTTP_PROXY); 3626 if (!TextUtils.isEmpty(proxy)) { 3627 String data[] = proxy.split(":"); 3628 if (data.length == 0) { 3629 return; 3630 } 3631 3632 String proxyHost = data[0]; 3633 int proxyPort = 8080; 3634 if (data.length > 1) { 3635 try { 3636 proxyPort = Integer.parseInt(data[1]); 3637 } catch (NumberFormatException e) { 3638 return; 3639 } 3640 } 3641 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3642 setGlobalProxy(p); 3643 } 3644 } 3645 3646 private void sendProxyBroadcast(ProxyInfo proxy) { 3647 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3648 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3649 if (DBG) log("sending Proxy Broadcast for " + proxy); 3650 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3651 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3652 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3653 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3654 final long ident = Binder.clearCallingIdentity(); 3655 try { 3656 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3657 } finally { 3658 Binder.restoreCallingIdentity(ident); 3659 } 3660 } 3661 3662 private static class SettingsObserver extends ContentObserver { 3663 private int mWhat; 3664 private Handler mHandler; 3665 SettingsObserver(Handler handler, int what) { 3666 super(handler); 3667 mHandler = handler; 3668 mWhat = what; 3669 } 3670 3671 void observe(Context context) { 3672 ContentResolver resolver = context.getContentResolver(); 3673 resolver.registerContentObserver(Settings.Global.getUriFor( 3674 Settings.Global.HTTP_PROXY), false, this); 3675 } 3676 3677 @Override 3678 public void onChange(boolean selfChange) { 3679 mHandler.obtainMessage(mWhat).sendToTarget(); 3680 } 3681 } 3682 3683 private static void log(String s) { 3684 Slog.d(TAG, s); 3685 } 3686 3687 private static void loge(String s) { 3688 Slog.e(TAG, s); 3689 } 3690 3691 int convertFeatureToNetworkType(int networkType, String feature) { 3692 int usedNetworkType = networkType; 3693 3694 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3695 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3696 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3697 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3698 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3699 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3700 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3701 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3702 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3703 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3704 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3705 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3706 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3707 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3708 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3709 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3710 } else { 3711 Slog.e(TAG, "Can't match any mobile netTracker!"); 3712 } 3713 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3714 if (TextUtils.equals(feature, "p2p")) { 3715 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3716 } else { 3717 Slog.e(TAG, "Can't match any wifi netTracker!"); 3718 } 3719 } else { 3720 Slog.e(TAG, "Unexpected network type"); 3721 } 3722 return usedNetworkType; 3723 } 3724 3725 private static <T> T checkNotNull(T value, String message) { 3726 if (value == null) { 3727 throw new NullPointerException(message); 3728 } 3729 return value; 3730 } 3731 3732 /** 3733 * Protect a socket from VPN routing rules. This method is used by 3734 * VpnBuilder and not available in ConnectivityManager. Permissions 3735 * are checked in Vpn class. 3736 * @hide 3737 */ 3738 @Override 3739 public boolean protectVpn(ParcelFileDescriptor socket) { 3740 throwIfLockdownEnabled(); 3741 try { 3742 int type = mActiveDefaultNetwork; 3743 int user = UserHandle.getUserId(Binder.getCallingUid()); 3744 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3745 synchronized(mVpns) { 3746 mVpns.get(user).protect(socket); 3747 } 3748 return true; 3749 } 3750 } catch (Exception e) { 3751 // ignore 3752 } finally { 3753 try { 3754 socket.close(); 3755 } catch (Exception e) { 3756 // ignore 3757 } 3758 } 3759 return false; 3760 } 3761 3762 /** 3763 * Prepare for a VPN application. This method is used by VpnDialogs 3764 * and not available in ConnectivityManager. Permissions are checked 3765 * in Vpn class. 3766 * @hide 3767 */ 3768 @Override 3769 public boolean prepareVpn(String oldPackage, String newPackage) { 3770 throwIfLockdownEnabled(); 3771 int user = UserHandle.getUserId(Binder.getCallingUid()); 3772 synchronized(mVpns) { 3773 return mVpns.get(user).prepare(oldPackage, newPackage); 3774 } 3775 } 3776 3777 @Override 3778 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3779 enforceMarkNetworkSocketPermission(); 3780 final long token = Binder.clearCallingIdentity(); 3781 try { 3782 int mark = mNetd.getMarkForUid(uid); 3783 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3784 if (mark == -1) { 3785 mark = 0; 3786 } 3787 NetworkUtils.markSocket(socket.getFd(), mark); 3788 } catch (RemoteException e) { 3789 } finally { 3790 Binder.restoreCallingIdentity(token); 3791 } 3792 } 3793 3794 /** 3795 * Configure a TUN interface and return its file descriptor. Parameters 3796 * are encoded and opaque to this class. This method is used by VpnBuilder 3797 * and not available in ConnectivityManager. Permissions are checked in 3798 * Vpn class. 3799 * @hide 3800 */ 3801 @Override 3802 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3803 throwIfLockdownEnabled(); 3804 int user = UserHandle.getUserId(Binder.getCallingUid()); 3805 synchronized(mVpns) { 3806 return mVpns.get(user).establish(config); 3807 } 3808 } 3809 3810 /** 3811 * Start legacy VPN, controlling native daemons as needed. Creates a 3812 * secondary thread to perform connection work, returning quickly. 3813 */ 3814 @Override 3815 public void startLegacyVpn(VpnProfile profile) { 3816 throwIfLockdownEnabled(); 3817 final LinkProperties egress = getActiveLinkProperties(); 3818 if (egress == null) { 3819 throw new IllegalStateException("Missing active network connection"); 3820 } 3821 int user = UserHandle.getUserId(Binder.getCallingUid()); 3822 synchronized(mVpns) { 3823 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3824 } 3825 } 3826 3827 /** 3828 * Return the information of the ongoing legacy VPN. This method is used 3829 * by VpnSettings and not available in ConnectivityManager. Permissions 3830 * are checked in Vpn class. 3831 * @hide 3832 */ 3833 @Override 3834 public LegacyVpnInfo getLegacyVpnInfo() { 3835 throwIfLockdownEnabled(); 3836 int user = UserHandle.getUserId(Binder.getCallingUid()); 3837 synchronized(mVpns) { 3838 return mVpns.get(user).getLegacyVpnInfo(); 3839 } 3840 } 3841 3842 /** 3843 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3844 * not available in ConnectivityManager. 3845 * Permissions are checked in Vpn class. 3846 * @hide 3847 */ 3848 @Override 3849 public VpnConfig getVpnConfig() { 3850 int user = UserHandle.getUserId(Binder.getCallingUid()); 3851 synchronized(mVpns) { 3852 return mVpns.get(user).getVpnConfig(); 3853 } 3854 } 3855 3856 /** 3857 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3858 * through NetworkStateTracker since it works differently. For example, it 3859 * needs to override DNS servers but never takes the default routes. It 3860 * relies on another data network, and it could keep existing connections 3861 * alive after reconnecting, switching between networks, or even resuming 3862 * from deep sleep. Calls from applications should be done synchronously 3863 * to avoid race conditions. As these are all hidden APIs, refactoring can 3864 * be done whenever a better abstraction is developed. 3865 */ 3866 public class VpnCallback { 3867 private VpnCallback() { 3868 } 3869 3870 public void onStateChanged(NetworkInfo info) { 3871 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3872 } 3873 3874 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3875 if (dnsServers == null) { 3876 restore(); 3877 return; 3878 } 3879 3880 // Convert DNS servers into addresses. 3881 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3882 for (String address : dnsServers) { 3883 // Double check the addresses and remove invalid ones. 3884 try { 3885 addresses.add(InetAddress.parseNumericAddress(address)); 3886 } catch (Exception e) { 3887 // ignore 3888 } 3889 } 3890 if (addresses.isEmpty()) { 3891 restore(); 3892 return; 3893 } 3894 3895 // Concatenate search domains into a string. 3896 StringBuilder buffer = new StringBuilder(); 3897 if (searchDomains != null) { 3898 for (String domain : searchDomains) { 3899 buffer.append(domain).append(' '); 3900 } 3901 } 3902 String domains = buffer.toString().trim(); 3903 3904 // Apply DNS changes. 3905 synchronized (mDnsLock) { 3906 updateDnsLocked("VPN", iface, addresses, domains, false); 3907 } 3908 3909 // Temporarily disable the default proxy (not global). 3910 synchronized (mProxyLock) { 3911 mDefaultProxyDisabled = true; 3912 if (mGlobalProxy == null && mDefaultProxy != null) { 3913 sendProxyBroadcast(null); 3914 } 3915 } 3916 3917 // TODO: support proxy per network. 3918 } 3919 3920 public void restore() { 3921 synchronized (mProxyLock) { 3922 mDefaultProxyDisabled = false; 3923 if (mGlobalProxy == null && mDefaultProxy != null) { 3924 sendProxyBroadcast(mDefaultProxy); 3925 } 3926 } 3927 } 3928 3929 public void protect(ParcelFileDescriptor socket) { 3930 try { 3931 final int mark = mNetd.getMarkForProtect(); 3932 NetworkUtils.markSocket(socket.getFd(), mark); 3933 } catch (RemoteException e) { 3934 } 3935 } 3936 3937 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3938 for (RouteInfo route : routes) { 3939 try { 3940 mNetd.setMarkedForwardingRoute(interfaze, route); 3941 } catch (RemoteException e) { 3942 } 3943 } 3944 } 3945 3946 public void setMarkedForwarding(String interfaze) { 3947 try { 3948 mNetd.setMarkedForwarding(interfaze); 3949 } catch (RemoteException e) { 3950 } 3951 } 3952 3953 public void clearMarkedForwarding(String interfaze) { 3954 try { 3955 mNetd.clearMarkedForwarding(interfaze); 3956 } catch (RemoteException e) { 3957 } 3958 } 3959 3960 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3961 int uidStart = uid * UserHandle.PER_USER_RANGE; 3962 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3963 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3964 } 3965 3966 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3967 int uidStart = uid * UserHandle.PER_USER_RANGE; 3968 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3969 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3970 } 3971 3972 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3973 boolean forwardDns) { 3974 try { 3975 mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd); 3976 if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3977 } catch (RemoteException e) { 3978 } 3979 3980 } 3981 3982 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3983 boolean forwardDns) { 3984 try { 3985 mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3986 if (forwardDns) mNetd.clearDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3987 } catch (RemoteException e) { 3988 } 3989 3990 } 3991 } 3992 3993 @Override 3994 public boolean updateLockdownVpn() { 3995 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3996 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3997 return false; 3998 } 3999 4000 // Tear down existing lockdown if profile was removed 4001 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4002 if (mLockdownEnabled) { 4003 if (!mKeyStore.isUnlocked()) { 4004 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4005 return false; 4006 } 4007 4008 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4009 final VpnProfile profile = VpnProfile.decode( 4010 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4011 int user = UserHandle.getUserId(Binder.getCallingUid()); 4012 synchronized(mVpns) { 4013 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4014 profile)); 4015 } 4016 } else { 4017 setLockdownTracker(null); 4018 } 4019 4020 return true; 4021 } 4022 4023 /** 4024 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4025 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4026 */ 4027 private void setLockdownTracker(LockdownVpnTracker tracker) { 4028 // Shutdown any existing tracker 4029 final LockdownVpnTracker existing = mLockdownTracker; 4030 mLockdownTracker = null; 4031 if (existing != null) { 4032 existing.shutdown(); 4033 } 4034 4035 try { 4036 if (tracker != null) { 4037 mNetd.setFirewallEnabled(true); 4038 mNetd.setFirewallInterfaceRule("lo", true); 4039 mLockdownTracker = tracker; 4040 mLockdownTracker.init(); 4041 } else { 4042 mNetd.setFirewallEnabled(false); 4043 } 4044 } catch (RemoteException e) { 4045 // ignored; NMS lives inside system_server 4046 } 4047 } 4048 4049 private void throwIfLockdownEnabled() { 4050 if (mLockdownEnabled) { 4051 throw new IllegalStateException("Unavailable in lockdown mode"); 4052 } 4053 } 4054 4055 public void supplyMessenger(int networkType, Messenger messenger) { 4056 enforceConnectivityInternalPermission(); 4057 4058 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4059 mNetTrackers[networkType].supplyMessenger(messenger); 4060 } 4061 } 4062 4063 public int findConnectionTypeForIface(String iface) { 4064 enforceConnectivityInternalPermission(); 4065 4066 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4067 for (NetworkStateTracker tracker : mNetTrackers) { 4068 if (tracker != null) { 4069 LinkProperties lp = tracker.getLinkProperties(); 4070 if (lp != null && iface.equals(lp.getInterfaceName())) { 4071 return tracker.getNetworkInfo().getType(); 4072 } 4073 } 4074 } 4075 return ConnectivityManager.TYPE_NONE; 4076 } 4077 4078 /** 4079 * Have mobile data fail fast if enabled. 4080 * 4081 * @param enabled DctConstants.ENABLED/DISABLED 4082 */ 4083 private void setEnableFailFastMobileData(int enabled) { 4084 int tag; 4085 4086 if (enabled == DctConstants.ENABLED) { 4087 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4088 } else { 4089 tag = mEnableFailFastMobileDataTag.get(); 4090 } 4091 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4092 enabled)); 4093 } 4094 4095 private boolean isMobileDataStateTrackerReady() { 4096 MobileDataStateTracker mdst = 4097 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4098 return (mdst != null) && (mdst.isReady()); 4099 } 4100 4101 /** 4102 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4103 */ 4104 4105 /** 4106 * No connection was possible to the network. 4107 * This is NOT a warm sim. 4108 */ 4109 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4110 4111 /** 4112 * A connection was made to the internet, all is well. 4113 * This is NOT a warm sim. 4114 */ 4115 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4116 4117 /** 4118 * A connection was made but no dns server was available to resolve a name to address. 4119 * This is NOT a warm sim since provisioning network is supported. 4120 */ 4121 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4122 4123 /** 4124 * A connection was made but could not open a TCP connection. 4125 * This is NOT a warm sim since provisioning network is supported. 4126 */ 4127 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4128 4129 /** 4130 * A connection was made but there was a redirection, we appear to be in walled garden. 4131 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4132 */ 4133 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4134 4135 /** 4136 * The mobile network is a provisioning network. 4137 * This is an indication of a warm sim on a mobile network such as AT&T. 4138 */ 4139 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4140 4141 /** 4142 * The mobile network is provisioning 4143 */ 4144 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4145 4146 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4147 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4148 4149 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4150 4151 @Override 4152 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4153 int timeOutMs = -1; 4154 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4155 enforceConnectivityInternalPermission(); 4156 4157 final long token = Binder.clearCallingIdentity(); 4158 try { 4159 timeOutMs = suggestedTimeOutMs; 4160 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4161 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4162 } 4163 4164 // Check that mobile networks are supported 4165 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4166 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4167 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4168 return timeOutMs; 4169 } 4170 4171 // If we're already checking don't do it again 4172 // TODO: Add a queue of results... 4173 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4174 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4175 return timeOutMs; 4176 } 4177 4178 // Start off with mobile notification off 4179 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4180 4181 CheckMp checkMp = new CheckMp(mContext, this); 4182 CheckMp.CallBack cb = new CheckMp.CallBack() { 4183 @Override 4184 void onComplete(Integer result) { 4185 if (DBG) log("CheckMp.onComplete: result=" + result); 4186 NetworkInfo ni = 4187 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4188 switch(result) { 4189 case CMP_RESULT_CODE_CONNECTABLE: 4190 case CMP_RESULT_CODE_NO_CONNECTION: 4191 case CMP_RESULT_CODE_NO_DNS: 4192 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4193 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4194 break; 4195 } 4196 case CMP_RESULT_CODE_REDIRECTED: { 4197 if (DBG) log("CheckMp.onComplete: warm sim"); 4198 String url = getMobileProvisioningUrl(); 4199 if (TextUtils.isEmpty(url)) { 4200 url = getMobileRedirectedProvisioningUrl(); 4201 } 4202 if (TextUtils.isEmpty(url) == false) { 4203 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4204 setProvNotificationVisible(true, 4205 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4206 url); 4207 } else { 4208 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4209 } 4210 break; 4211 } 4212 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4213 String url = getMobileProvisioningUrl(); 4214 if (TextUtils.isEmpty(url) == false) { 4215 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4216 setProvNotificationVisible(true, 4217 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4218 url); 4219 // Mark that we've got a provisioning network and 4220 // Disable Mobile Data until user actually starts provisioning. 4221 mIsProvisioningNetwork.set(true); 4222 MobileDataStateTracker mdst = (MobileDataStateTracker) 4223 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4224 mdst.setInternalDataEnable(false); 4225 } else { 4226 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4227 } 4228 break; 4229 } 4230 case CMP_RESULT_CODE_IS_PROVISIONING: { 4231 // FIXME: Need to know when provisioning is done. Probably we can 4232 // check the completion status if successful we're done if we 4233 // "timedout" or still connected to provisioning APN turn off data? 4234 if (DBG) log("CheckMp.onComplete: provisioning started"); 4235 mIsStartingProvisioning.set(false); 4236 break; 4237 } 4238 default: { 4239 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4240 break; 4241 } 4242 } 4243 mIsCheckingMobileProvisioning.set(false); 4244 } 4245 }; 4246 CheckMp.Params params = 4247 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4248 if (DBG) log("checkMobileProvisioning: params=" + params); 4249 checkMp.execute(params); 4250 } finally { 4251 Binder.restoreCallingIdentity(token); 4252 if (DBG) log("checkMobileProvisioning: X"); 4253 } 4254 return timeOutMs; 4255 } 4256 4257 static class CheckMp extends 4258 AsyncTask<CheckMp.Params, Void, Integer> { 4259 private static final String CHECKMP_TAG = "CheckMp"; 4260 4261 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4262 private static boolean mTestingFailures; 4263 4264 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4265 private static final int MAX_LOOPS = 4; 4266 4267 // Number of milli-seconds to complete all of the retires 4268 public static final int MAX_TIMEOUT_MS = 60000; 4269 4270 // The socket should retry only 5 seconds, the default is longer 4271 private static final int SOCKET_TIMEOUT_MS = 5000; 4272 4273 // Sleep time for network errors 4274 private static final int NET_ERROR_SLEEP_SEC = 3; 4275 4276 // Sleep time for network route establishment 4277 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4278 4279 // Short sleep time for polling :( 4280 private static final int POLLING_SLEEP_SEC = 1; 4281 4282 private Context mContext; 4283 private ConnectivityService mCs; 4284 private TelephonyManager mTm; 4285 private Params mParams; 4286 4287 /** 4288 * Parameters for AsyncTask.execute 4289 */ 4290 static class Params { 4291 private String mUrl; 4292 private long mTimeOutMs; 4293 private CallBack mCb; 4294 4295 Params(String url, long timeOutMs, CallBack cb) { 4296 mUrl = url; 4297 mTimeOutMs = timeOutMs; 4298 mCb = cb; 4299 } 4300 4301 @Override 4302 public String toString() { 4303 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4304 } 4305 } 4306 4307 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4308 // issued by name or ip address, for Google its by name so when we construct 4309 // this HostnameVerifier we'll pass the original Uri and use it to verify 4310 // the host. If the host name in the original uril fails we'll test the 4311 // hostname parameter just incase things change. 4312 static class CheckMpHostnameVerifier implements HostnameVerifier { 4313 Uri mOrgUri; 4314 4315 CheckMpHostnameVerifier(Uri orgUri) { 4316 mOrgUri = orgUri; 4317 } 4318 4319 @Override 4320 public boolean verify(String hostname, SSLSession session) { 4321 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4322 String orgUriHost = mOrgUri.getHost(); 4323 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4324 if (DBG) { 4325 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4326 + " orgUriHost=" + orgUriHost); 4327 } 4328 return retVal; 4329 } 4330 } 4331 4332 /** 4333 * The call back object passed in Params. onComplete will be called 4334 * on the main thread. 4335 */ 4336 abstract static class CallBack { 4337 // Called on the main thread. 4338 abstract void onComplete(Integer result); 4339 } 4340 4341 public CheckMp(Context context, ConnectivityService cs) { 4342 if (Build.IS_DEBUGGABLE) { 4343 mTestingFailures = 4344 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4345 } else { 4346 mTestingFailures = false; 4347 } 4348 4349 mContext = context; 4350 mCs = cs; 4351 4352 // Setup access to TelephonyService we'll be using. 4353 mTm = (TelephonyManager) mContext.getSystemService( 4354 Context.TELEPHONY_SERVICE); 4355 } 4356 4357 /** 4358 * Get the default url to use for the test. 4359 */ 4360 public String getDefaultUrl() { 4361 // See http://go/clientsdns for usage approval 4362 String server = Settings.Global.getString(mContext.getContentResolver(), 4363 Settings.Global.CAPTIVE_PORTAL_SERVER); 4364 if (server == null) { 4365 server = "clients3.google.com"; 4366 } 4367 return "http://" + server + "/generate_204"; 4368 } 4369 4370 /** 4371 * Detect if its possible to connect to the http url. DNS based detection techniques 4372 * do not work at all hotspots. The best way to check is to perform a request to 4373 * a known address that fetches the data we expect. 4374 */ 4375 private synchronized Integer isMobileOk(Params params) { 4376 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4377 Uri orgUri = Uri.parse(params.mUrl); 4378 Random rand = new Random(); 4379 mParams = params; 4380 4381 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4382 result = CMP_RESULT_CODE_NO_CONNECTION; 4383 log("isMobileOk: X not mobile capable result=" + result); 4384 return result; 4385 } 4386 4387 if (mCs.mIsStartingProvisioning.get()) { 4388 result = CMP_RESULT_CODE_IS_PROVISIONING; 4389 log("isMobileOk: X is provisioning result=" + result); 4390 return result; 4391 } 4392 4393 // See if we've already determined we've got a provisioning connection, 4394 // if so we don't need to do anything active. 4395 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4396 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4397 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4398 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4399 4400 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4401 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4402 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4403 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4404 4405 if (isDefaultProvisioning || isHipriProvisioning) { 4406 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4407 log("isMobileOk: X default || hipri is provisioning result=" + result); 4408 return result; 4409 } 4410 4411 try { 4412 // Continue trying to connect until time has run out 4413 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4414 4415 if (!mCs.isMobileDataStateTrackerReady()) { 4416 // Wait for MobileDataStateTracker to be ready. 4417 if (DBG) log("isMobileOk: mdst is not ready"); 4418 while(SystemClock.elapsedRealtime() < endTime) { 4419 if (mCs.isMobileDataStateTrackerReady()) { 4420 // Enable fail fast as we'll do retries here and use a 4421 // hipri connection so the default connection stays active. 4422 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4423 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4424 break; 4425 } 4426 sleep(POLLING_SLEEP_SEC); 4427 } 4428 } 4429 4430 log("isMobileOk: start hipri url=" + params.mUrl); 4431 4432 // First wait until we can start using hipri 4433 Binder binder = new Binder(); 4434 while(SystemClock.elapsedRealtime() < endTime) { 4435 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4436 Phone.FEATURE_ENABLE_HIPRI, binder); 4437 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4438 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4439 log("isMobileOk: hipri started"); 4440 break; 4441 } 4442 if (VDBG) log("isMobileOk: hipri not started yet"); 4443 result = CMP_RESULT_CODE_NO_CONNECTION; 4444 sleep(POLLING_SLEEP_SEC); 4445 } 4446 4447 // Continue trying to connect until time has run out 4448 while(SystemClock.elapsedRealtime() < endTime) { 4449 try { 4450 // Wait for hipri to connect. 4451 // TODO: Don't poll and handle situation where hipri fails 4452 // because default is retrying. See b/9569540 4453 NetworkInfo.State state = mCs 4454 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4455 if (state != NetworkInfo.State.CONNECTED) { 4456 if (true/*VDBG*/) { 4457 log("isMobileOk: not connected ni=" + 4458 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4459 } 4460 sleep(POLLING_SLEEP_SEC); 4461 result = CMP_RESULT_CODE_NO_CONNECTION; 4462 continue; 4463 } 4464 4465 // Hipri has started check if this is a provisioning url 4466 MobileDataStateTracker mdst = (MobileDataStateTracker) 4467 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4468 if (mdst.isProvisioningNetwork()) { 4469 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4470 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4471 return result; 4472 } else { 4473 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4474 } 4475 4476 // Get of the addresses associated with the url host. We need to use the 4477 // address otherwise HttpURLConnection object will use the name to get 4478 // the addresses and will try every address but that will bypass the 4479 // route to host we setup and the connection could succeed as the default 4480 // interface might be connected to the internet via wifi or other interface. 4481 InetAddress[] addresses; 4482 try { 4483 addresses = InetAddress.getAllByName(orgUri.getHost()); 4484 } catch (UnknownHostException e) { 4485 result = CMP_RESULT_CODE_NO_DNS; 4486 log("isMobileOk: X UnknownHostException result=" + result); 4487 return result; 4488 } 4489 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4490 4491 // Get the type of addresses supported by this link 4492 LinkProperties lp = mCs.getLinkProperties( 4493 ConnectivityManager.TYPE_MOBILE_HIPRI); 4494 boolean linkHasIpv4 = lp.hasIPv4Address(); 4495 boolean linkHasIpv6 = lp.hasIPv6Address(); 4496 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4497 + " linkHasIpv6=" + linkHasIpv6); 4498 4499 final ArrayList<InetAddress> validAddresses = 4500 new ArrayList<InetAddress>(addresses.length); 4501 4502 for (InetAddress addr : addresses) { 4503 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4504 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4505 validAddresses.add(addr); 4506 } 4507 } 4508 4509 if (validAddresses.size() == 0) { 4510 return CMP_RESULT_CODE_NO_CONNECTION; 4511 } 4512 4513 int addrTried = 0; 4514 while (true) { 4515 // Loop through at most MAX_LOOPS valid addresses or until 4516 // we run out of time 4517 if (addrTried++ >= MAX_LOOPS) { 4518 log("isMobileOk: too many loops tried - giving up"); 4519 break; 4520 } 4521 if (SystemClock.elapsedRealtime() >= endTime) { 4522 log("isMobileOk: spend too much time - giving up"); 4523 break; 4524 } 4525 4526 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4527 validAddresses.size())); 4528 4529 // Make a route to host so we check the specific interface. 4530 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4531 hostAddr.getAddress(), null)) { 4532 // Wait a short time to be sure the route is established ?? 4533 log("isMobileOk:" 4534 + " wait to establish route to hostAddr=" + hostAddr); 4535 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4536 } else { 4537 log("isMobileOk:" 4538 + " could not establish route to hostAddr=" + hostAddr); 4539 // Wait a short time before the next attempt 4540 sleep(NET_ERROR_SLEEP_SEC); 4541 continue; 4542 } 4543 4544 // Rewrite the url to have numeric address to use the specific route 4545 // using http for half the attempts and https for the other half. 4546 // Doing https first and http second as on a redirected walled garden 4547 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4548 // handshake timed out" which we declare as 4549 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4550 // having http second we will be using logic used for some time. 4551 URL newUrl; 4552 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4553 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4554 orgUri.getPath()); 4555 log("isMobileOk: newUrl=" + newUrl); 4556 4557 HttpURLConnection urlConn = null; 4558 try { 4559 // Open the connection set the request headers and get the response 4560 urlConn = (HttpURLConnection)newUrl.openConnection( 4561 java.net.Proxy.NO_PROXY); 4562 if (scheme.equals("https")) { 4563 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4564 new CheckMpHostnameVerifier(orgUri)); 4565 } 4566 urlConn.setInstanceFollowRedirects(false); 4567 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4568 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4569 urlConn.setUseCaches(false); 4570 urlConn.setAllowUserInteraction(false); 4571 // Set the "Connection" to "Close" as by default "Keep-Alive" 4572 // is used which is useless in this case. 4573 urlConn.setRequestProperty("Connection", "close"); 4574 int responseCode = urlConn.getResponseCode(); 4575 4576 // For debug display the headers 4577 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4578 log("isMobileOk: headers=" + headers); 4579 4580 // Close the connection 4581 urlConn.disconnect(); 4582 urlConn = null; 4583 4584 if (mTestingFailures) { 4585 // Pretend no connection, this tests using http and https 4586 result = CMP_RESULT_CODE_NO_CONNECTION; 4587 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4588 continue; 4589 } 4590 4591 if (responseCode == 204) { 4592 // Return 4593 result = CMP_RESULT_CODE_CONNECTABLE; 4594 log("isMobileOk: X got expected responseCode=" + responseCode 4595 + " result=" + result); 4596 return result; 4597 } else { 4598 // Retry to be sure this was redirected, we've gotten 4599 // occasions where a server returned 200 even though 4600 // the device didn't have a "warm" sim. 4601 log("isMobileOk: not expected responseCode=" + responseCode); 4602 // TODO - it would be nice in the single-address case to do 4603 // another DNS resolve here, but flushing the cache is a bit 4604 // heavy-handed. 4605 result = CMP_RESULT_CODE_REDIRECTED; 4606 } 4607 } catch (Exception e) { 4608 log("isMobileOk: HttpURLConnection Exception" + e); 4609 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4610 if (urlConn != null) { 4611 urlConn.disconnect(); 4612 urlConn = null; 4613 } 4614 sleep(NET_ERROR_SLEEP_SEC); 4615 continue; 4616 } 4617 } 4618 log("isMobileOk: X loops|timed out result=" + result); 4619 return result; 4620 } catch (Exception e) { 4621 log("isMobileOk: Exception e=" + e); 4622 continue; 4623 } 4624 } 4625 log("isMobileOk: timed out"); 4626 } finally { 4627 log("isMobileOk: F stop hipri"); 4628 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4629 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4630 Phone.FEATURE_ENABLE_HIPRI); 4631 4632 // Wait for hipri to disconnect. 4633 long endTime = SystemClock.elapsedRealtime() + 5000; 4634 4635 while(SystemClock.elapsedRealtime() < endTime) { 4636 NetworkInfo.State state = mCs 4637 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4638 if (state != NetworkInfo.State.DISCONNECTED) { 4639 if (VDBG) { 4640 log("isMobileOk: connected ni=" + 4641 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4642 } 4643 sleep(POLLING_SLEEP_SEC); 4644 continue; 4645 } 4646 } 4647 4648 log("isMobileOk: X result=" + result); 4649 } 4650 return result; 4651 } 4652 4653 @Override 4654 protected Integer doInBackground(Params... params) { 4655 return isMobileOk(params[0]); 4656 } 4657 4658 @Override 4659 protected void onPostExecute(Integer result) { 4660 log("onPostExecute: result=" + result); 4661 if ((mParams != null) && (mParams.mCb != null)) { 4662 mParams.mCb.onComplete(result); 4663 } 4664 } 4665 4666 private String inetAddressesToString(InetAddress[] addresses) { 4667 StringBuffer sb = new StringBuffer(); 4668 boolean firstTime = true; 4669 for(InetAddress addr : addresses) { 4670 if (firstTime) { 4671 firstTime = false; 4672 } else { 4673 sb.append(","); 4674 } 4675 sb.append(addr); 4676 } 4677 return sb.toString(); 4678 } 4679 4680 private void printNetworkInfo() { 4681 boolean hasIccCard = mTm.hasIccCard(); 4682 int simState = mTm.getSimState(); 4683 log("hasIccCard=" + hasIccCard 4684 + " simState=" + simState); 4685 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4686 if (ni != null) { 4687 log("ni.length=" + ni.length); 4688 for (NetworkInfo netInfo: ni) { 4689 log("netInfo=" + netInfo.toString()); 4690 } 4691 } else { 4692 log("no network info ni=null"); 4693 } 4694 } 4695 4696 /** 4697 * Sleep for a few seconds then return. 4698 * @param seconds 4699 */ 4700 private static void sleep(int seconds) { 4701 long stopTime = System.nanoTime() + (seconds * 1000000000); 4702 long sleepTime; 4703 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4704 try { 4705 Thread.sleep(sleepTime / 1000000); 4706 } catch (InterruptedException ignored) { 4707 } 4708 } 4709 } 4710 4711 private static void log(String s) { 4712 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4713 } 4714 } 4715 4716 // TODO: Move to ConnectivityManager and make public? 4717 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4718 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4719 4720 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4721 @Override 4722 public void onReceive(Context context, Intent intent) { 4723 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4724 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4725 } 4726 } 4727 }; 4728 4729 private void handleMobileProvisioningAction(String url) { 4730 // Mark notification as not visible 4731 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4732 4733 // If provisioning network handle as a special case, 4734 // otherwise launch browser with the intent directly. 4735 if (mIsProvisioningNetwork.get()) { 4736 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4737 mIsStartingProvisioning.set(true); 4738 MobileDataStateTracker mdst = (MobileDataStateTracker) 4739 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4740 mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4741 mdst.enableMobileProvisioning(url); 4742 } else { 4743 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4744 // Check for apps that can handle provisioning first 4745 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4746 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4747 + mTelephonyManager.getSimOperator()); 4748 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4749 != null) { 4750 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4751 Intent.FLAG_ACTIVITY_NEW_TASK); 4752 mContext.startActivity(provisioningIntent); 4753 } else { 4754 // If no apps exist, use standard URL ACTION_VIEW method 4755 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4756 Intent.CATEGORY_APP_BROWSER); 4757 newIntent.setData(Uri.parse(url)); 4758 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4759 Intent.FLAG_ACTIVITY_NEW_TASK); 4760 try { 4761 mContext.startActivity(newIntent); 4762 } catch (ActivityNotFoundException e) { 4763 loge("handleMobileProvisioningAction: startActivity failed" + e); 4764 } 4765 } 4766 } 4767 } 4768 4769 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4770 private volatile boolean mIsNotificationVisible = false; 4771 4772 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4773 String url) { 4774 if (DBG) { 4775 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4776 + " extraInfo=" + extraInfo + " url=" + url); 4777 } 4778 4779 Resources r = Resources.getSystem(); 4780 NotificationManager notificationManager = (NotificationManager) mContext 4781 .getSystemService(Context.NOTIFICATION_SERVICE); 4782 4783 if (visible) { 4784 CharSequence title; 4785 CharSequence details; 4786 int icon; 4787 Intent intent; 4788 Notification notification = new Notification(); 4789 switch (networkType) { 4790 case ConnectivityManager.TYPE_WIFI: 4791 title = r.getString(R.string.wifi_available_sign_in, 0); 4792 details = r.getString(R.string.network_available_sign_in_detailed, 4793 extraInfo); 4794 icon = R.drawable.stat_notify_wifi_in_range; 4795 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4796 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4797 Intent.FLAG_ACTIVITY_NEW_TASK); 4798 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4799 break; 4800 case ConnectivityManager.TYPE_MOBILE: 4801 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4802 title = r.getString(R.string.network_available_sign_in, 0); 4803 // TODO: Change this to pull from NetworkInfo once a printable 4804 // name has been added to it 4805 details = mTelephonyManager.getNetworkOperatorName(); 4806 icon = R.drawable.stat_notify_rssi_in_range; 4807 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4808 intent.putExtra("EXTRA_URL", url); 4809 intent.setFlags(0); 4810 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4811 break; 4812 default: 4813 title = r.getString(R.string.network_available_sign_in, 0); 4814 details = r.getString(R.string.network_available_sign_in_detailed, 4815 extraInfo); 4816 icon = R.drawable.stat_notify_rssi_in_range; 4817 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4818 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4819 Intent.FLAG_ACTIVITY_NEW_TASK); 4820 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4821 break; 4822 } 4823 4824 notification.when = 0; 4825 notification.icon = icon; 4826 notification.flags = Notification.FLAG_AUTO_CANCEL; 4827 notification.tickerText = title; 4828 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4829 4830 try { 4831 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4832 } catch (NullPointerException npe) { 4833 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4834 npe.printStackTrace(); 4835 } 4836 } else { 4837 try { 4838 notificationManager.cancel(NOTIFICATION_ID, networkType); 4839 } catch (NullPointerException npe) { 4840 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4841 npe.printStackTrace(); 4842 } 4843 } 4844 mIsNotificationVisible = visible; 4845 } 4846 4847 /** Location to an updatable file listing carrier provisioning urls. 4848 * An example: 4849 * 4850 * <?xml version="1.0" encoding="utf-8"?> 4851 * <provisioningUrls> 4852 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4853 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4854 * </provisioningUrls> 4855 */ 4856 private static final String PROVISIONING_URL_PATH = 4857 "/data/misc/radio/provisioning_urls.xml"; 4858 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4859 4860 /** XML tag for root element. */ 4861 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4862 /** XML tag for individual url */ 4863 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4864 /** XML tag for redirected url */ 4865 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4866 /** XML attribute for mcc */ 4867 private static final String ATTR_MCC = "mcc"; 4868 /** XML attribute for mnc */ 4869 private static final String ATTR_MNC = "mnc"; 4870 4871 private static final int REDIRECTED_PROVISIONING = 1; 4872 private static final int PROVISIONING = 2; 4873 4874 private String getProvisioningUrlBaseFromFile(int type) { 4875 FileReader fileReader = null; 4876 XmlPullParser parser = null; 4877 Configuration config = mContext.getResources().getConfiguration(); 4878 String tagType; 4879 4880 switch (type) { 4881 case PROVISIONING: 4882 tagType = TAG_PROVISIONING_URL; 4883 break; 4884 case REDIRECTED_PROVISIONING: 4885 tagType = TAG_REDIRECTED_URL; 4886 break; 4887 default: 4888 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4889 type); 4890 } 4891 4892 try { 4893 fileReader = new FileReader(mProvisioningUrlFile); 4894 parser = Xml.newPullParser(); 4895 parser.setInput(fileReader); 4896 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4897 4898 while (true) { 4899 XmlUtils.nextElement(parser); 4900 4901 String element = parser.getName(); 4902 if (element == null) break; 4903 4904 if (element.equals(tagType)) { 4905 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4906 try { 4907 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4908 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4909 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4910 parser.next(); 4911 if (parser.getEventType() == XmlPullParser.TEXT) { 4912 return parser.getText(); 4913 } 4914 } 4915 } 4916 } catch (NumberFormatException e) { 4917 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4918 } 4919 } 4920 } 4921 return null; 4922 } catch (FileNotFoundException e) { 4923 loge("Carrier Provisioning Urls file not found"); 4924 } catch (XmlPullParserException e) { 4925 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4926 } catch (IOException e) { 4927 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4928 } finally { 4929 if (fileReader != null) { 4930 try { 4931 fileReader.close(); 4932 } catch (IOException e) {} 4933 } 4934 } 4935 return null; 4936 } 4937 4938 @Override 4939 public String getMobileRedirectedProvisioningUrl() { 4940 enforceConnectivityInternalPermission(); 4941 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4942 if (TextUtils.isEmpty(url)) { 4943 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4944 } 4945 return url; 4946 } 4947 4948 @Override 4949 public String getMobileProvisioningUrl() { 4950 enforceConnectivityInternalPermission(); 4951 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4952 if (TextUtils.isEmpty(url)) { 4953 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4954 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4955 } else { 4956 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4957 } 4958 // populate the iccid, imei and phone number in the provisioning url. 4959 if (!TextUtils.isEmpty(url)) { 4960 String phoneNumber = mTelephonyManager.getLine1Number(); 4961 if (TextUtils.isEmpty(phoneNumber)) { 4962 phoneNumber = "0000000000"; 4963 } 4964 url = String.format(url, 4965 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4966 mTelephonyManager.getDeviceId() /* IMEI */, 4967 phoneNumber /* Phone numer */); 4968 } 4969 4970 return url; 4971 } 4972 4973 @Override 4974 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4975 String extraInfo, String url) { 4976 enforceConnectivityInternalPermission(); 4977 setProvNotificationVisible(visible, networkType, extraInfo, url); 4978 } 4979 4980 @Override 4981 public void setAirplaneMode(boolean enable) { 4982 enforceConnectivityInternalPermission(); 4983 final long ident = Binder.clearCallingIdentity(); 4984 try { 4985 final ContentResolver cr = mContext.getContentResolver(); 4986 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4987 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4988 intent.putExtra("state", enable); 4989 mContext.sendBroadcast(intent); 4990 } finally { 4991 Binder.restoreCallingIdentity(ident); 4992 } 4993 } 4994 4995 private void onUserStart(int userId) { 4996 synchronized(mVpns) { 4997 Vpn userVpn = mVpns.get(userId); 4998 if (userVpn != null) { 4999 loge("Starting user already has a VPN"); 5000 return; 5001 } 5002 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5003 mVpns.put(userId, userVpn); 5004 userVpn.startMonitoring(mContext, mTrackerHandler); 5005 } 5006 } 5007 5008 private void onUserStop(int userId) { 5009 synchronized(mVpns) { 5010 Vpn userVpn = mVpns.get(userId); 5011 if (userVpn == null) { 5012 loge("Stopping user has no VPN"); 5013 return; 5014 } 5015 mVpns.delete(userId); 5016 } 5017 } 5018 5019 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5020 @Override 5021 public void onReceive(Context context, Intent intent) { 5022 final String action = intent.getAction(); 5023 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5024 if (userId == UserHandle.USER_NULL) return; 5025 5026 if (Intent.ACTION_USER_STARTING.equals(action)) { 5027 onUserStart(userId); 5028 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5029 onUserStop(userId); 5030 } 5031 } 5032 }; 5033 5034 @Override 5035 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5036 enforceAccessPermission(); 5037 if (isNetworkTypeValid(networkType)) { 5038 return mNetTrackers[networkType].getLinkQualityInfo(); 5039 } else { 5040 return null; 5041 } 5042 } 5043 5044 @Override 5045 public LinkQualityInfo getActiveLinkQualityInfo() { 5046 enforceAccessPermission(); 5047 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 5048 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5049 } else { 5050 return null; 5051 } 5052 } 5053 5054 @Override 5055 public LinkQualityInfo[] getAllLinkQualityInfo() { 5056 enforceAccessPermission(); 5057 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5058 for (NetworkStateTracker tracker : mNetTrackers) { 5059 if (tracker != null) { 5060 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5061 if (li != null) { 5062 result.add(li); 5063 } 5064 } 5065 } 5066 5067 return result.toArray(new LinkQualityInfo[result.size()]); 5068 } 5069 5070 /* Infrastructure for network sampling */ 5071 5072 private void handleNetworkSamplingTimeout() { 5073 5074 log("Sampling interval elapsed, updating statistics .."); 5075 5076 // initialize list of interfaces .. 5077 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5078 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5079 for (NetworkStateTracker tracker : mNetTrackers) { 5080 if (tracker != null) { 5081 String ifaceName = tracker.getNetworkInterfaceName(); 5082 if (ifaceName != null) { 5083 mapIfaceToSample.put(ifaceName, null); 5084 } 5085 } 5086 } 5087 5088 // Read samples for all interfaces 5089 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5090 5091 // process samples for all networks 5092 for (NetworkStateTracker tracker : mNetTrackers) { 5093 if (tracker != null) { 5094 String ifaceName = tracker.getNetworkInterfaceName(); 5095 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5096 if (ss != null) { 5097 // end the previous sampling cycle 5098 tracker.stopSampling(ss); 5099 // start a new sampling cycle .. 5100 tracker.startSampling(ss); 5101 } 5102 } 5103 } 5104 5105 log("Done."); 5106 5107 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5108 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5109 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5110 5111 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5112 5113 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5114 } 5115 5116 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5117 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5118 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5119 } 5120 5121 private final ArrayList<AsyncChannel> mNetworkFactories = new ArrayList<AsyncChannel>(); 5122 5123 public void registerNetworkFactory(Messenger messenger) { 5124 enforceConnectivityInternalPermission(); 5125 5126 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, messenger)); 5127 } 5128 5129 private void handleRegisterNetworkFactory(Messenger messenger) { 5130 if (VDBG) log("Got NetworkFactory Messenger"); 5131 AsyncChannel ac = new AsyncChannel(); 5132 mNetworkFactories.add(ac); 5133 ac.connect(mContext, mTrackerHandler, messenger); 5134 } 5135 5136 private final SparseArray<NetworkRequest> mNetworkRequests = new SparseArray<NetworkRequest>(); 5137} 5138