ConnectivityService.java revision 89fb3eb718f890ace30e63bd4ab4ad5409d8600d
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 for (RouteInfo r : routeDiff.added) { 2707 if (isLinkDefault || ! r.isDefaultRoute()) { 2708 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt); 2709 } else { 2710 // add to a secondary route table 2711 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT); 2712 2713 // many radios add a default route even when we don't want one. 2714 // remove the default route unless somebody else has asked for it 2715 String ifaceName = newLp.getInterfaceName(); 2716 synchronized (mRoutesLock) { 2717 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2718 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2719 try { 2720 mNetd.removeRoute(ifaceName, r); 2721 } catch (Exception e) { 2722 // never crash - catch them all 2723 if (DBG) loge("Exception trying to remove a route: " + e); 2724 } 2725 } 2726 } 2727 } 2728 } 2729 2730 return routesChanged; 2731 } 2732 2733 /** 2734 * Reads the network specific MTU size from reources. 2735 * and set it on it's iface. 2736 */ 2737 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2738 final String iface = nt.getLinkProperties().getInterfaceName(); 2739 final int mtu = nt.getLinkProperties().getMtu(); 2740 2741 if (mtu < 68 || mtu > 10000) { 2742 loge("Unexpected mtu value: " + mtu + ", " + nt); 2743 return; 2744 } 2745 2746 try { 2747 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2748 mNetd.setMtu(iface, mtu); 2749 } catch (Exception e) { 2750 Slog.e(TAG, "exception in setMtu()" + e); 2751 } 2752 } 2753 2754 /** 2755 * Reads the network specific TCP buffer sizes from SystemProperties 2756 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2757 * wide use 2758 */ 2759 private void updateNetworkSettings(NetworkStateTracker nt) { 2760 String key = nt.getTcpBufferSizesPropName(); 2761 String bufferSizes = key == null ? null : SystemProperties.get(key); 2762 2763 if (TextUtils.isEmpty(bufferSizes)) { 2764 if (VDBG) log(key + " not found in system properties. Using defaults"); 2765 2766 // Setting to default values so we won't be stuck to previous values 2767 key = "net.tcp.buffersize.default"; 2768 bufferSizes = SystemProperties.get(key); 2769 } 2770 2771 // Set values in kernel 2772 if (bufferSizes.length() != 0) { 2773 if (VDBG) { 2774 log("Setting TCP values: [" + bufferSizes 2775 + "] which comes from [" + key + "]"); 2776 } 2777 setBufferSize(bufferSizes); 2778 } 2779 2780 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2781 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2782 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2783 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2784 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2785 if (rwndValue != 0) { 2786 SystemProperties.set(sysctlKey, rwndValue.toString()); 2787 } 2788 } 2789 2790 /** 2791 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2792 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2793 * 2794 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2795 * writeMin, writeInitial, writeMax" 2796 */ 2797 private void setBufferSize(String bufferSizes) { 2798 try { 2799 String[] values = bufferSizes.split(","); 2800 2801 if (values.length == 6) { 2802 final String prefix = "/sys/kernel/ipv4/tcp_"; 2803 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2804 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2805 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2806 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2807 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2808 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2809 } else { 2810 loge("Invalid buffersize string: " + bufferSizes); 2811 } 2812 } catch (IOException e) { 2813 loge("Can't set tcp buffer sizes:" + e); 2814 } 2815 } 2816 2817 /** 2818 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2819 * on the highest priority active net which this process requested. 2820 * If there aren't any, clear it out 2821 */ 2822 private void reassessPidDns(int pid, boolean doBump) 2823 { 2824 if (VDBG) log("reassessPidDns for pid " + pid); 2825 Integer myPid = new Integer(pid); 2826 for(int i : mPriorityList) { 2827 if (mNetConfigs[i].isDefault()) { 2828 continue; 2829 } 2830 NetworkStateTracker nt = mNetTrackers[i]; 2831 if (nt.getNetworkInfo().isConnected() && 2832 !nt.isTeardownRequested()) { 2833 LinkProperties p = nt.getLinkProperties(); 2834 if (p == null) continue; 2835 if (mNetRequestersPids[i].contains(myPid)) { 2836 try { 2837 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2838 } catch (Exception e) { 2839 Slog.e(TAG, "exception reasseses pid dns: " + e); 2840 } 2841 return; 2842 } 2843 } 2844 } 2845 // nothing found - delete 2846 try { 2847 mNetd.clearDnsInterfaceForPid(pid); 2848 } catch (Exception e) { 2849 Slog.e(TAG, "exception clear interface from pid: " + e); 2850 } 2851 } 2852 2853 private void flushVmDnsCache() { 2854 /* 2855 * Tell the VMs to toss their DNS caches 2856 */ 2857 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2858 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2859 /* 2860 * Connectivity events can happen before boot has completed ... 2861 */ 2862 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2863 final long ident = Binder.clearCallingIdentity(); 2864 try { 2865 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2866 } finally { 2867 Binder.restoreCallingIdentity(ident); 2868 } 2869 } 2870 2871 // Caller must grab mDnsLock. 2872 private void updateDnsLocked(String network, String iface, 2873 Collection<InetAddress> dnses, String domains, boolean defaultDns) { 2874 int last = 0; 2875 if (dnses.size() == 0 && mDefaultDns != null) { 2876 dnses = new ArrayList(); 2877 dnses.add(mDefaultDns); 2878 if (DBG) { 2879 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2880 } 2881 } 2882 2883 try { 2884 mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains); 2885 if (defaultDns) { 2886 mNetd.setDefaultInterfaceForDns(iface); 2887 } 2888 2889 for (InetAddress dns : dnses) { 2890 ++last; 2891 String key = "net.dns" + last; 2892 String value = dns.getHostAddress(); 2893 SystemProperties.set(key, value); 2894 } 2895 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2896 String key = "net.dns" + i; 2897 SystemProperties.set(key, ""); 2898 } 2899 mNumDnsEntries = last; 2900 } catch (Exception e) { 2901 loge("exception setting default dns interface: " + e); 2902 } 2903 } 2904 2905 private void handleDnsConfigurationChange(int netType) { 2906 // add default net's dns entries 2907 NetworkStateTracker nt = mNetTrackers[netType]; 2908 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2909 LinkProperties p = nt.getLinkProperties(); 2910 if (p == null) return; 2911 Collection<InetAddress> dnses = p.getDnses(); 2912 if (mNetConfigs[netType].isDefault()) { 2913 String network = nt.getNetworkInfo().getTypeName(); 2914 synchronized (mDnsLock) { 2915 updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true); 2916 } 2917 } else { 2918 try { 2919 mNetd.setDnsServersForInterface(p.getInterfaceName(), 2920 NetworkUtils.makeStrings(dnses), p.getDomains()); 2921 } catch (Exception e) { 2922 if (DBG) loge("exception setting dns servers: " + e); 2923 } 2924 // set per-pid dns for attached secondary nets 2925 List<Integer> pids = mNetRequestersPids[netType]; 2926 for (Integer pid : pids) { 2927 try { 2928 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2929 } catch (Exception e) { 2930 Slog.e(TAG, "exception setting interface for pid: " + e); 2931 } 2932 } 2933 } 2934 flushVmDnsCache(); 2935 } 2936 } 2937 2938 private int getRestoreDefaultNetworkDelay(int networkType) { 2939 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2940 NETWORK_RESTORE_DELAY_PROP_NAME); 2941 if(restoreDefaultNetworkDelayStr != null && 2942 restoreDefaultNetworkDelayStr.length() != 0) { 2943 try { 2944 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2945 } catch (NumberFormatException e) { 2946 } 2947 } 2948 // if the system property isn't set, use the value for the apn type 2949 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2950 2951 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2952 (mNetConfigs[networkType] != null)) { 2953 ret = mNetConfigs[networkType].restoreTime; 2954 } 2955 return ret; 2956 } 2957 2958 @Override 2959 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2960 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2961 if (mContext.checkCallingOrSelfPermission( 2962 android.Manifest.permission.DUMP) 2963 != PackageManager.PERMISSION_GRANTED) { 2964 pw.println("Permission Denial: can't dump ConnectivityService " + 2965 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2966 Binder.getCallingUid()); 2967 return; 2968 } 2969 2970 // TODO: add locking to get atomic snapshot 2971 pw.println(); 2972 for (int i = 0; i < mNetTrackers.length; i++) { 2973 final NetworkStateTracker nst = mNetTrackers[i]; 2974 if (nst != null) { 2975 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 2976 pw.increaseIndent(); 2977 if (nst.getNetworkInfo().isConnected()) { 2978 pw.println("Active network: " + nst.getNetworkInfo(). 2979 getTypeName()); 2980 } 2981 pw.println(nst.getNetworkInfo()); 2982 pw.println(nst.getLinkProperties()); 2983 pw.println(nst); 2984 pw.println(); 2985 pw.decreaseIndent(); 2986 } 2987 } 2988 2989 pw.print("Active default network: "); pw.println(getNetworkTypeName(mActiveDefaultNetwork)); 2990 pw.println(); 2991 2992 pw.println("Network Requester Pids:"); 2993 pw.increaseIndent(); 2994 for (int net : mPriorityList) { 2995 String pidString = net + ": "; 2996 for (Integer pid : mNetRequestersPids[net]) { 2997 pidString = pidString + pid.toString() + ", "; 2998 } 2999 pw.println(pidString); 3000 } 3001 pw.println(); 3002 pw.decreaseIndent(); 3003 3004 pw.println("FeatureUsers:"); 3005 pw.increaseIndent(); 3006 for (Object requester : mFeatureUsers) { 3007 pw.println(requester.toString()); 3008 } 3009 pw.println(); 3010 pw.decreaseIndent(); 3011 3012 synchronized (this) { 3013 pw.println("NetworkTranstionWakeLock is currently " + 3014 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3015 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3016 } 3017 pw.println(); 3018 3019 mTethering.dump(fd, pw, args); 3020 3021 if (mInetLog != null) { 3022 pw.println(); 3023 pw.println("Inet condition reports:"); 3024 pw.increaseIndent(); 3025 for(int i = 0; i < mInetLog.size(); i++) { 3026 pw.println(mInetLog.get(i)); 3027 } 3028 pw.decreaseIndent(); 3029 } 3030 } 3031 3032 // must be stateless - things change under us. 3033 private class NetworkStateTrackerHandler extends Handler { 3034 public NetworkStateTrackerHandler(Looper looper) { 3035 super(looper); 3036 } 3037 3038 @Override 3039 public void handleMessage(Message msg) { 3040 NetworkInfo info; 3041 switch (msg.what) { 3042 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3043 AsyncChannel ac = (AsyncChannel) msg.obj; 3044 if (mNetworkFactories.contains(ac)) { 3045 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3046 if (VDBG) log("NetworkFactory connected"); 3047 for (int i = 0; i < mNetworkRequests.size(); i++) { 3048 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, 3049 mNetworkRequests.valueAt(i)); 3050 } 3051 } else { 3052 loge("Error connecting NetworkFactory"); 3053 mNetworkFactories.remove((AsyncChannel) msg.obj); 3054 } 3055 } 3056 break; 3057 } 3058 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3059 info = (NetworkInfo) msg.obj; 3060 NetworkInfo.State state = info.getState(); 3061 3062 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3063 (state == NetworkInfo.State.DISCONNECTED) || 3064 (state == NetworkInfo.State.SUSPENDED)) { 3065 log("ConnectivityChange for " + 3066 info.getTypeName() + ": " + 3067 state + "/" + info.getDetailedState()); 3068 } 3069 3070 // Since mobile has the notion of a network/apn that can be used for 3071 // provisioning we need to check every time we're connected as 3072 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3073 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3074 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3075 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3076 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3077 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3078 Settings.Global.DEVICE_PROVISIONED, 0)) 3079 && (((state == NetworkInfo.State.CONNECTED) 3080 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3081 || info.isConnectedToProvisioningNetwork())) { 3082 log("ConnectivityChange checkMobileProvisioning for" 3083 + " TYPE_MOBILE or ProvisioningNetwork"); 3084 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3085 } 3086 3087 EventLogTags.writeConnectivityStateChanged( 3088 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3089 3090 if (info.getDetailedState() == 3091 NetworkInfo.DetailedState.FAILED) { 3092 handleConnectionFailure(info); 3093 } else if (info.isConnectedToProvisioningNetwork()) { 3094 /** 3095 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3096 * for now its an in between network, its a network that 3097 * is actually a default network but we don't want it to be 3098 * announced as such to keep background applications from 3099 * trying to use it. It turns out that some still try so we 3100 * take the additional step of clearing any default routes 3101 * to the link that may have incorrectly setup by the lower 3102 * levels. 3103 */ 3104 LinkProperties lp = getLinkProperties(info.getType()); 3105 if (DBG) { 3106 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3107 } 3108 3109 // Clear any default routes setup by the radio so 3110 // any activity by applications trying to use this 3111 // connection will fail until the provisioning network 3112 // is enabled. 3113 for (RouteInfo r : lp.getRoutes()) { 3114 removeRoute(lp, r, TO_DEFAULT_TABLE); 3115 } 3116 } else if (state == NetworkInfo.State.DISCONNECTED) { 3117 handleDisconnect(info); 3118 } else if (state == NetworkInfo.State.SUSPENDED) { 3119 // TODO: need to think this over. 3120 // the logic here is, handle SUSPENDED the same as 3121 // DISCONNECTED. The only difference being we are 3122 // broadcasting an intent with NetworkInfo that's 3123 // suspended. This allows the applications an 3124 // opportunity to handle DISCONNECTED and SUSPENDED 3125 // differently, or not. 3126 handleDisconnect(info); 3127 } else if (state == NetworkInfo.State.CONNECTED) { 3128 handleConnect(info); 3129 } 3130 if (mLockdownTracker != null) { 3131 mLockdownTracker.onNetworkInfoChanged(info); 3132 } 3133 break; 3134 } 3135 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3136 info = (NetworkInfo) msg.obj; 3137 // TODO: Temporary allowing network configuration 3138 // change not resetting sockets. 3139 // @see bug/4455071 3140 handleConnectivityChange(info.getType(), false); 3141 break; 3142 } 3143 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3144 info = (NetworkInfo) msg.obj; 3145 int type = info.getType(); 3146 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3147 break; 3148 } 3149 } 3150 } 3151 } 3152 3153 private class InternalHandler extends Handler { 3154 public InternalHandler(Looper looper) { 3155 super(looper); 3156 } 3157 3158 @Override 3159 public void handleMessage(Message msg) { 3160 NetworkInfo info; 3161 switch (msg.what) { 3162 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3163 String causedBy = null; 3164 synchronized (ConnectivityService.this) { 3165 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3166 mNetTransitionWakeLock.isHeld()) { 3167 mNetTransitionWakeLock.release(); 3168 causedBy = mNetTransitionWakeLockCausedBy; 3169 } 3170 } 3171 if (causedBy != null) { 3172 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3173 } 3174 break; 3175 } 3176 case EVENT_RESTORE_DEFAULT_NETWORK: { 3177 FeatureUser u = (FeatureUser)msg.obj; 3178 u.expire(); 3179 break; 3180 } 3181 case EVENT_INET_CONDITION_CHANGE: { 3182 int netType = msg.arg1; 3183 int condition = msg.arg2; 3184 handleInetConditionChange(netType, condition); 3185 break; 3186 } 3187 case EVENT_INET_CONDITION_HOLD_END: { 3188 int netType = msg.arg1; 3189 int sequence = msg.arg2; 3190 handleInetConditionHoldEnd(netType, sequence); 3191 break; 3192 } 3193 case EVENT_SET_NETWORK_PREFERENCE: { 3194 int preference = msg.arg1; 3195 handleSetNetworkPreference(preference); 3196 break; 3197 } 3198 case EVENT_SET_MOBILE_DATA: { 3199 boolean enabled = (msg.arg1 == ENABLED); 3200 handleSetMobileData(enabled); 3201 break; 3202 } 3203 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3204 handleDeprecatedGlobalHttpProxy(); 3205 break; 3206 } 3207 case EVENT_SET_DEPENDENCY_MET: { 3208 boolean met = (msg.arg1 == ENABLED); 3209 handleSetDependencyMet(msg.arg2, met); 3210 break; 3211 } 3212 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3213 Intent intent = (Intent)msg.obj; 3214 sendStickyBroadcast(intent); 3215 break; 3216 } 3217 case EVENT_SET_POLICY_DATA_ENABLE: { 3218 final int networkType = msg.arg1; 3219 final boolean enabled = msg.arg2 == ENABLED; 3220 handleSetPolicyDataEnable(networkType, enabled); 3221 break; 3222 } 3223 case EVENT_VPN_STATE_CHANGED: { 3224 if (mLockdownTracker != null) { 3225 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3226 } 3227 break; 3228 } 3229 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3230 int tag = mEnableFailFastMobileDataTag.get(); 3231 if (msg.arg1 == tag) { 3232 MobileDataStateTracker mobileDst = 3233 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3234 if (mobileDst != null) { 3235 mobileDst.setEnableFailFastMobileData(msg.arg2); 3236 } 3237 } else { 3238 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3239 + " != tag:" + tag); 3240 } 3241 break; 3242 } 3243 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3244 handleNetworkSamplingTimeout(); 3245 break; 3246 } 3247 case EVENT_PROXY_HAS_CHANGED: { 3248 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3249 break; 3250 } 3251 case EVENT_REGISTER_NETWORK_FACTORY: { 3252 handleRegisterNetworkFactory((Messenger)msg.obj); 3253 break; 3254 } 3255 } 3256 } 3257 } 3258 3259 // javadoc from interface 3260 public int tether(String iface) { 3261 enforceTetherChangePermission(); 3262 3263 if (isTetheringSupported()) { 3264 return mTethering.tether(iface); 3265 } else { 3266 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3267 } 3268 } 3269 3270 // javadoc from interface 3271 public int untether(String iface) { 3272 enforceTetherChangePermission(); 3273 3274 if (isTetheringSupported()) { 3275 return mTethering.untether(iface); 3276 } else { 3277 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3278 } 3279 } 3280 3281 // javadoc from interface 3282 public int getLastTetherError(String iface) { 3283 enforceTetherAccessPermission(); 3284 3285 if (isTetheringSupported()) { 3286 return mTethering.getLastTetherError(iface); 3287 } else { 3288 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3289 } 3290 } 3291 3292 // TODO - proper iface API for selection by property, inspection, etc 3293 public String[] getTetherableUsbRegexs() { 3294 enforceTetherAccessPermission(); 3295 if (isTetheringSupported()) { 3296 return mTethering.getTetherableUsbRegexs(); 3297 } else { 3298 return new String[0]; 3299 } 3300 } 3301 3302 public String[] getTetherableWifiRegexs() { 3303 enforceTetherAccessPermission(); 3304 if (isTetheringSupported()) { 3305 return mTethering.getTetherableWifiRegexs(); 3306 } else { 3307 return new String[0]; 3308 } 3309 } 3310 3311 public String[] getTetherableBluetoothRegexs() { 3312 enforceTetherAccessPermission(); 3313 if (isTetheringSupported()) { 3314 return mTethering.getTetherableBluetoothRegexs(); 3315 } else { 3316 return new String[0]; 3317 } 3318 } 3319 3320 public int setUsbTethering(boolean enable) { 3321 enforceTetherChangePermission(); 3322 if (isTetheringSupported()) { 3323 return mTethering.setUsbTethering(enable); 3324 } else { 3325 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3326 } 3327 } 3328 3329 // TODO - move iface listing, queries, etc to new module 3330 // javadoc from interface 3331 public String[] getTetherableIfaces() { 3332 enforceTetherAccessPermission(); 3333 return mTethering.getTetherableIfaces(); 3334 } 3335 3336 public String[] getTetheredIfaces() { 3337 enforceTetherAccessPermission(); 3338 return mTethering.getTetheredIfaces(); 3339 } 3340 3341 public String[] getTetheringErroredIfaces() { 3342 enforceTetherAccessPermission(); 3343 return mTethering.getErroredIfaces(); 3344 } 3345 3346 // if ro.tether.denied = true we default to no tethering 3347 // gservices could set the secure setting to 1 though to enable it on a build where it 3348 // had previously been turned off. 3349 public boolean isTetheringSupported() { 3350 enforceTetherAccessPermission(); 3351 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3352 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3353 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3354 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3355 mTethering.getTetherableWifiRegexs().length != 0 || 3356 mTethering.getTetherableBluetoothRegexs().length != 0) && 3357 mTethering.getUpstreamIfaceTypes().length != 0); 3358 } 3359 3360 // An API NetworkStateTrackers can call when they lose their network. 3361 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3362 // whichever happens first. The timer is started by the first caller and not 3363 // restarted by subsequent callers. 3364 public void requestNetworkTransitionWakelock(String forWhom) { 3365 enforceConnectivityInternalPermission(); 3366 synchronized (this) { 3367 if (mNetTransitionWakeLock.isHeld()) return; 3368 mNetTransitionWakeLockSerialNumber++; 3369 mNetTransitionWakeLock.acquire(); 3370 mNetTransitionWakeLockCausedBy = forWhom; 3371 } 3372 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3373 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3374 mNetTransitionWakeLockSerialNumber, 0), 3375 mNetTransitionWakeLockTimeout); 3376 return; 3377 } 3378 3379 // 100 percent is full good, 0 is full bad. 3380 public void reportInetCondition(int networkType, int percentage) { 3381 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3382 mContext.enforceCallingOrSelfPermission( 3383 android.Manifest.permission.STATUS_BAR, 3384 "ConnectivityService"); 3385 3386 if (DBG) { 3387 int pid = getCallingPid(); 3388 int uid = getCallingUid(); 3389 String s = pid + "(" + uid + ") reports inet is " + 3390 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3391 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3392 mInetLog.add(s); 3393 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3394 mInetLog.remove(0); 3395 } 3396 } 3397 mHandler.sendMessage(mHandler.obtainMessage( 3398 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3399 } 3400 3401 private void handleInetConditionChange(int netType, int condition) { 3402 if (mActiveDefaultNetwork == -1) { 3403 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3404 return; 3405 } 3406 if (mActiveDefaultNetwork != netType) { 3407 if (DBG) log("handleInetConditionChange: net=" + netType + 3408 " != default=" + mActiveDefaultNetwork + " - ignore"); 3409 return; 3410 } 3411 if (VDBG) { 3412 log("handleInetConditionChange: net=" + 3413 netType + ", condition=" + condition + 3414 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3415 } 3416 mDefaultInetCondition = condition; 3417 int delay; 3418 if (mInetConditionChangeInFlight == false) { 3419 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3420 // setup a new hold to debounce this 3421 if (mDefaultInetCondition > 50) { 3422 delay = Settings.Global.getInt(mContext.getContentResolver(), 3423 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3424 } else { 3425 delay = Settings.Global.getInt(mContext.getContentResolver(), 3426 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3427 } 3428 mInetConditionChangeInFlight = true; 3429 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3430 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3431 } else { 3432 // we've set the new condition, when this hold ends that will get picked up 3433 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3434 } 3435 } 3436 3437 private void handleInetConditionHoldEnd(int netType, int sequence) { 3438 if (DBG) { 3439 log("handleInetConditionHoldEnd: net=" + netType + 3440 ", condition=" + mDefaultInetCondition + 3441 ", published condition=" + mDefaultInetConditionPublished); 3442 } 3443 mInetConditionChangeInFlight = false; 3444 3445 if (mActiveDefaultNetwork == -1) { 3446 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3447 return; 3448 } 3449 if (mDefaultConnectionSequence != sequence) { 3450 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3451 return; 3452 } 3453 // TODO: Figure out why this optimization sometimes causes a 3454 // change in mDefaultInetCondition to be missed and the 3455 // UI to not be updated. 3456 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3457 // if (DBG) log("no change in condition - aborting"); 3458 // return; 3459 //} 3460 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3461 if (networkInfo.isConnected() == false) { 3462 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3463 return; 3464 } 3465 mDefaultInetConditionPublished = mDefaultInetCondition; 3466 sendInetConditionBroadcast(networkInfo); 3467 return; 3468 } 3469 3470 public ProxyInfo getProxy() { 3471 // this information is already available as a world read/writable jvm property 3472 // so this API change wouldn't have a benifit. It also breaks the passing 3473 // of proxy info to all the JVMs. 3474 // enforceAccessPermission(); 3475 synchronized (mProxyLock) { 3476 ProxyInfo ret = mGlobalProxy; 3477 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3478 return ret; 3479 } 3480 } 3481 3482 public void setGlobalProxy(ProxyInfo proxyProperties) { 3483 enforceConnectivityInternalPermission(); 3484 3485 synchronized (mProxyLock) { 3486 if (proxyProperties == mGlobalProxy) return; 3487 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3488 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3489 3490 String host = ""; 3491 int port = 0; 3492 String exclList = ""; 3493 String pacFileUrl = ""; 3494 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3495 (proxyProperties.getPacFileUrl() != null))) { 3496 if (!proxyProperties.isValid()) { 3497 if (DBG) 3498 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3499 return; 3500 } 3501 mGlobalProxy = new ProxyInfo(proxyProperties); 3502 host = mGlobalProxy.getHost(); 3503 port = mGlobalProxy.getPort(); 3504 exclList = mGlobalProxy.getExclusionListAsString(); 3505 if (proxyProperties.getPacFileUrl() != null) { 3506 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3507 } 3508 } else { 3509 mGlobalProxy = null; 3510 } 3511 ContentResolver res = mContext.getContentResolver(); 3512 final long token = Binder.clearCallingIdentity(); 3513 try { 3514 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3515 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3516 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3517 exclList); 3518 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3519 } finally { 3520 Binder.restoreCallingIdentity(token); 3521 } 3522 } 3523 3524 if (mGlobalProxy == null) { 3525 proxyProperties = mDefaultProxy; 3526 } 3527 sendProxyBroadcast(proxyProperties); 3528 } 3529 3530 private void loadGlobalProxy() { 3531 ContentResolver res = mContext.getContentResolver(); 3532 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3533 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3534 String exclList = Settings.Global.getString(res, 3535 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3536 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3537 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3538 ProxyInfo proxyProperties; 3539 if (!TextUtils.isEmpty(pacFileUrl)) { 3540 proxyProperties = new ProxyInfo(pacFileUrl); 3541 } else { 3542 proxyProperties = new ProxyInfo(host, port, exclList); 3543 } 3544 if (!proxyProperties.isValid()) { 3545 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3546 return; 3547 } 3548 3549 synchronized (mProxyLock) { 3550 mGlobalProxy = proxyProperties; 3551 } 3552 } 3553 } 3554 3555 public ProxyInfo getGlobalProxy() { 3556 // this information is already available as a world read/writable jvm property 3557 // so this API change wouldn't have a benifit. It also breaks the passing 3558 // of proxy info to all the JVMs. 3559 // enforceAccessPermission(); 3560 synchronized (mProxyLock) { 3561 return mGlobalProxy; 3562 } 3563 } 3564 3565 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3566 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3567 && (proxy.getPacFileUrl() == null)) { 3568 proxy = null; 3569 } 3570 synchronized (mProxyLock) { 3571 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3572 if (mDefaultProxy == proxy) return; // catches repeated nulls 3573 if (proxy != null && !proxy.isValid()) { 3574 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3575 return; 3576 } 3577 3578 // This call could be coming from the PacManager, containing the port of the local 3579 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3580 // global (to get the correct local port), and send a broadcast. 3581 // TODO: Switch PacManager to have its own message to send back rather than 3582 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3583 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3584 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3585 mGlobalProxy = proxy; 3586 sendProxyBroadcast(mGlobalProxy); 3587 return; 3588 } 3589 mDefaultProxy = proxy; 3590 3591 if (mGlobalProxy != null) return; 3592 if (!mDefaultProxyDisabled) { 3593 sendProxyBroadcast(proxy); 3594 } 3595 } 3596 } 3597 3598 private void handleDeprecatedGlobalHttpProxy() { 3599 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3600 Settings.Global.HTTP_PROXY); 3601 if (!TextUtils.isEmpty(proxy)) { 3602 String data[] = proxy.split(":"); 3603 if (data.length == 0) { 3604 return; 3605 } 3606 3607 String proxyHost = data[0]; 3608 int proxyPort = 8080; 3609 if (data.length > 1) { 3610 try { 3611 proxyPort = Integer.parseInt(data[1]); 3612 } catch (NumberFormatException e) { 3613 return; 3614 } 3615 } 3616 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3617 setGlobalProxy(p); 3618 } 3619 } 3620 3621 private void sendProxyBroadcast(ProxyInfo proxy) { 3622 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3623 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3624 if (DBG) log("sending Proxy Broadcast for " + proxy); 3625 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3626 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3627 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3628 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3629 final long ident = Binder.clearCallingIdentity(); 3630 try { 3631 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3632 } finally { 3633 Binder.restoreCallingIdentity(ident); 3634 } 3635 } 3636 3637 private static class SettingsObserver extends ContentObserver { 3638 private int mWhat; 3639 private Handler mHandler; 3640 SettingsObserver(Handler handler, int what) { 3641 super(handler); 3642 mHandler = handler; 3643 mWhat = what; 3644 } 3645 3646 void observe(Context context) { 3647 ContentResolver resolver = context.getContentResolver(); 3648 resolver.registerContentObserver(Settings.Global.getUriFor( 3649 Settings.Global.HTTP_PROXY), false, this); 3650 } 3651 3652 @Override 3653 public void onChange(boolean selfChange) { 3654 mHandler.obtainMessage(mWhat).sendToTarget(); 3655 } 3656 } 3657 3658 private static void log(String s) { 3659 Slog.d(TAG, s); 3660 } 3661 3662 private static void loge(String s) { 3663 Slog.e(TAG, s); 3664 } 3665 3666 int convertFeatureToNetworkType(int networkType, String feature) { 3667 int usedNetworkType = networkType; 3668 3669 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3670 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3671 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3672 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3673 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3674 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3675 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3676 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3677 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3678 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3679 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3680 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3681 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3682 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3683 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3684 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3685 } else { 3686 Slog.e(TAG, "Can't match any mobile netTracker!"); 3687 } 3688 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3689 if (TextUtils.equals(feature, "p2p")) { 3690 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3691 } else { 3692 Slog.e(TAG, "Can't match any wifi netTracker!"); 3693 } 3694 } else { 3695 Slog.e(TAG, "Unexpected network type"); 3696 } 3697 return usedNetworkType; 3698 } 3699 3700 private static <T> T checkNotNull(T value, String message) { 3701 if (value == null) { 3702 throw new NullPointerException(message); 3703 } 3704 return value; 3705 } 3706 3707 /** 3708 * Protect a socket from VPN routing rules. This method is used by 3709 * VpnBuilder and not available in ConnectivityManager. Permissions 3710 * are checked in Vpn class. 3711 * @hide 3712 */ 3713 @Override 3714 public boolean protectVpn(ParcelFileDescriptor socket) { 3715 throwIfLockdownEnabled(); 3716 try { 3717 int type = mActiveDefaultNetwork; 3718 int user = UserHandle.getUserId(Binder.getCallingUid()); 3719 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3720 synchronized(mVpns) { 3721 mVpns.get(user).protect(socket); 3722 } 3723 return true; 3724 } 3725 } catch (Exception e) { 3726 // ignore 3727 } finally { 3728 try { 3729 socket.close(); 3730 } catch (Exception e) { 3731 // ignore 3732 } 3733 } 3734 return false; 3735 } 3736 3737 /** 3738 * Prepare for a VPN application. This method is used by VpnDialogs 3739 * and not available in ConnectivityManager. Permissions are checked 3740 * in Vpn class. 3741 * @hide 3742 */ 3743 @Override 3744 public boolean prepareVpn(String oldPackage, String newPackage) { 3745 throwIfLockdownEnabled(); 3746 int user = UserHandle.getUserId(Binder.getCallingUid()); 3747 synchronized(mVpns) { 3748 return mVpns.get(user).prepare(oldPackage, newPackage); 3749 } 3750 } 3751 3752 @Override 3753 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3754 enforceMarkNetworkSocketPermission(); 3755 final long token = Binder.clearCallingIdentity(); 3756 try { 3757 int mark = mNetd.getMarkForUid(uid); 3758 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3759 if (mark == -1) { 3760 mark = 0; 3761 } 3762 NetworkUtils.markSocket(socket.getFd(), mark); 3763 } catch (RemoteException e) { 3764 } finally { 3765 Binder.restoreCallingIdentity(token); 3766 } 3767 } 3768 3769 /** 3770 * Configure a TUN interface and return its file descriptor. Parameters 3771 * are encoded and opaque to this class. This method is used by VpnBuilder 3772 * and not available in ConnectivityManager. Permissions are checked in 3773 * Vpn class. 3774 * @hide 3775 */ 3776 @Override 3777 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3778 throwIfLockdownEnabled(); 3779 int user = UserHandle.getUserId(Binder.getCallingUid()); 3780 synchronized(mVpns) { 3781 return mVpns.get(user).establish(config); 3782 } 3783 } 3784 3785 /** 3786 * Start legacy VPN, controlling native daemons as needed. Creates a 3787 * secondary thread to perform connection work, returning quickly. 3788 */ 3789 @Override 3790 public void startLegacyVpn(VpnProfile profile) { 3791 throwIfLockdownEnabled(); 3792 final LinkProperties egress = getActiveLinkProperties(); 3793 if (egress == null) { 3794 throw new IllegalStateException("Missing active network connection"); 3795 } 3796 int user = UserHandle.getUserId(Binder.getCallingUid()); 3797 synchronized(mVpns) { 3798 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3799 } 3800 } 3801 3802 /** 3803 * Return the information of the ongoing legacy VPN. This method is used 3804 * by VpnSettings and not available in ConnectivityManager. Permissions 3805 * are checked in Vpn class. 3806 * @hide 3807 */ 3808 @Override 3809 public LegacyVpnInfo getLegacyVpnInfo() { 3810 throwIfLockdownEnabled(); 3811 int user = UserHandle.getUserId(Binder.getCallingUid()); 3812 synchronized(mVpns) { 3813 return mVpns.get(user).getLegacyVpnInfo(); 3814 } 3815 } 3816 3817 /** 3818 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3819 * not available in ConnectivityManager. 3820 * Permissions are checked in Vpn class. 3821 * @hide 3822 */ 3823 @Override 3824 public VpnConfig getVpnConfig() { 3825 int user = UserHandle.getUserId(Binder.getCallingUid()); 3826 synchronized(mVpns) { 3827 return mVpns.get(user).getVpnConfig(); 3828 } 3829 } 3830 3831 /** 3832 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3833 * through NetworkStateTracker since it works differently. For example, it 3834 * needs to override DNS servers but never takes the default routes. It 3835 * relies on another data network, and it could keep existing connections 3836 * alive after reconnecting, switching between networks, or even resuming 3837 * from deep sleep. Calls from applications should be done synchronously 3838 * to avoid race conditions. As these are all hidden APIs, refactoring can 3839 * be done whenever a better abstraction is developed. 3840 */ 3841 public class VpnCallback { 3842 private VpnCallback() { 3843 } 3844 3845 public void onStateChanged(NetworkInfo info) { 3846 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3847 } 3848 3849 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3850 if (dnsServers == null) { 3851 restore(); 3852 return; 3853 } 3854 3855 // Convert DNS servers into addresses. 3856 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3857 for (String address : dnsServers) { 3858 // Double check the addresses and remove invalid ones. 3859 try { 3860 addresses.add(InetAddress.parseNumericAddress(address)); 3861 } catch (Exception e) { 3862 // ignore 3863 } 3864 } 3865 if (addresses.isEmpty()) { 3866 restore(); 3867 return; 3868 } 3869 3870 // Concatenate search domains into a string. 3871 StringBuilder buffer = new StringBuilder(); 3872 if (searchDomains != null) { 3873 for (String domain : searchDomains) { 3874 buffer.append(domain).append(' '); 3875 } 3876 } 3877 String domains = buffer.toString().trim(); 3878 3879 // Apply DNS changes. 3880 synchronized (mDnsLock) { 3881 updateDnsLocked("VPN", iface, addresses, domains, false); 3882 } 3883 3884 // Temporarily disable the default proxy (not global). 3885 synchronized (mProxyLock) { 3886 mDefaultProxyDisabled = true; 3887 if (mGlobalProxy == null && mDefaultProxy != null) { 3888 sendProxyBroadcast(null); 3889 } 3890 } 3891 3892 // TODO: support proxy per network. 3893 } 3894 3895 public void restore() { 3896 synchronized (mProxyLock) { 3897 mDefaultProxyDisabled = false; 3898 if (mGlobalProxy == null && mDefaultProxy != null) { 3899 sendProxyBroadcast(mDefaultProxy); 3900 } 3901 } 3902 } 3903 3904 public void protect(ParcelFileDescriptor socket) { 3905 try { 3906 final int mark = mNetd.getMarkForProtect(); 3907 NetworkUtils.markSocket(socket.getFd(), mark); 3908 } catch (RemoteException e) { 3909 } 3910 } 3911 3912 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3913 for (RouteInfo route : routes) { 3914 try { 3915 mNetd.setMarkedForwardingRoute(interfaze, route); 3916 } catch (RemoteException e) { 3917 } 3918 } 3919 } 3920 3921 public void setMarkedForwarding(String interfaze) { 3922 try { 3923 mNetd.setMarkedForwarding(interfaze); 3924 } catch (RemoteException e) { 3925 } 3926 } 3927 3928 public void clearMarkedForwarding(String interfaze) { 3929 try { 3930 mNetd.clearMarkedForwarding(interfaze); 3931 } catch (RemoteException e) { 3932 } 3933 } 3934 3935 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3936 int uidStart = uid * UserHandle.PER_USER_RANGE; 3937 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3938 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3939 } 3940 3941 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3942 int uidStart = uid * UserHandle.PER_USER_RANGE; 3943 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3944 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3945 } 3946 3947 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3948 boolean forwardDns) { 3949 try { 3950 mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd); 3951 if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3952 } catch (RemoteException e) { 3953 } 3954 3955 } 3956 3957 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3958 boolean forwardDns) { 3959 try { 3960 mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3961 if (forwardDns) mNetd.clearDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3962 } catch (RemoteException e) { 3963 } 3964 3965 } 3966 } 3967 3968 @Override 3969 public boolean updateLockdownVpn() { 3970 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3971 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3972 return false; 3973 } 3974 3975 // Tear down existing lockdown if profile was removed 3976 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3977 if (mLockdownEnabled) { 3978 if (!mKeyStore.isUnlocked()) { 3979 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3980 return false; 3981 } 3982 3983 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3984 final VpnProfile profile = VpnProfile.decode( 3985 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3986 int user = UserHandle.getUserId(Binder.getCallingUid()); 3987 synchronized(mVpns) { 3988 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3989 profile)); 3990 } 3991 } else { 3992 setLockdownTracker(null); 3993 } 3994 3995 return true; 3996 } 3997 3998 /** 3999 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4000 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4001 */ 4002 private void setLockdownTracker(LockdownVpnTracker tracker) { 4003 // Shutdown any existing tracker 4004 final LockdownVpnTracker existing = mLockdownTracker; 4005 mLockdownTracker = null; 4006 if (existing != null) { 4007 existing.shutdown(); 4008 } 4009 4010 try { 4011 if (tracker != null) { 4012 mNetd.setFirewallEnabled(true); 4013 mNetd.setFirewallInterfaceRule("lo", true); 4014 mLockdownTracker = tracker; 4015 mLockdownTracker.init(); 4016 } else { 4017 mNetd.setFirewallEnabled(false); 4018 } 4019 } catch (RemoteException e) { 4020 // ignored; NMS lives inside system_server 4021 } 4022 } 4023 4024 private void throwIfLockdownEnabled() { 4025 if (mLockdownEnabled) { 4026 throw new IllegalStateException("Unavailable in lockdown mode"); 4027 } 4028 } 4029 4030 public void supplyMessenger(int networkType, Messenger messenger) { 4031 enforceConnectivityInternalPermission(); 4032 4033 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4034 mNetTrackers[networkType].supplyMessenger(messenger); 4035 } 4036 } 4037 4038 public int findConnectionTypeForIface(String iface) { 4039 enforceConnectivityInternalPermission(); 4040 4041 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4042 for (NetworkStateTracker tracker : mNetTrackers) { 4043 if (tracker != null) { 4044 LinkProperties lp = tracker.getLinkProperties(); 4045 if (lp != null && iface.equals(lp.getInterfaceName())) { 4046 return tracker.getNetworkInfo().getType(); 4047 } 4048 } 4049 } 4050 return ConnectivityManager.TYPE_NONE; 4051 } 4052 4053 /** 4054 * Have mobile data fail fast if enabled. 4055 * 4056 * @param enabled DctConstants.ENABLED/DISABLED 4057 */ 4058 private void setEnableFailFastMobileData(int enabled) { 4059 int tag; 4060 4061 if (enabled == DctConstants.ENABLED) { 4062 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4063 } else { 4064 tag = mEnableFailFastMobileDataTag.get(); 4065 } 4066 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4067 enabled)); 4068 } 4069 4070 private boolean isMobileDataStateTrackerReady() { 4071 MobileDataStateTracker mdst = 4072 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4073 return (mdst != null) && (mdst.isReady()); 4074 } 4075 4076 /** 4077 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4078 */ 4079 4080 /** 4081 * No connection was possible to the network. 4082 * This is NOT a warm sim. 4083 */ 4084 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4085 4086 /** 4087 * A connection was made to the internet, all is well. 4088 * This is NOT a warm sim. 4089 */ 4090 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4091 4092 /** 4093 * A connection was made but no dns server was available to resolve a name to address. 4094 * This is NOT a warm sim since provisioning network is supported. 4095 */ 4096 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4097 4098 /** 4099 * A connection was made but could not open a TCP connection. 4100 * This is NOT a warm sim since provisioning network is supported. 4101 */ 4102 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4103 4104 /** 4105 * A connection was made but there was a redirection, we appear to be in walled garden. 4106 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4107 */ 4108 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4109 4110 /** 4111 * The mobile network is a provisioning network. 4112 * This is an indication of a warm sim on a mobile network such as AT&T. 4113 */ 4114 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4115 4116 /** 4117 * The mobile network is provisioning 4118 */ 4119 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4120 4121 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4122 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4123 4124 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4125 4126 @Override 4127 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4128 int timeOutMs = -1; 4129 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4130 enforceConnectivityInternalPermission(); 4131 4132 final long token = Binder.clearCallingIdentity(); 4133 try { 4134 timeOutMs = suggestedTimeOutMs; 4135 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4136 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4137 } 4138 4139 // Check that mobile networks are supported 4140 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4141 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4142 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4143 return timeOutMs; 4144 } 4145 4146 // If we're already checking don't do it again 4147 // TODO: Add a queue of results... 4148 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4149 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4150 return timeOutMs; 4151 } 4152 4153 // Start off with mobile notification off 4154 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4155 4156 CheckMp checkMp = new CheckMp(mContext, this); 4157 CheckMp.CallBack cb = new CheckMp.CallBack() { 4158 @Override 4159 void onComplete(Integer result) { 4160 if (DBG) log("CheckMp.onComplete: result=" + result); 4161 NetworkInfo ni = 4162 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4163 switch(result) { 4164 case CMP_RESULT_CODE_CONNECTABLE: 4165 case CMP_RESULT_CODE_NO_CONNECTION: 4166 case CMP_RESULT_CODE_NO_DNS: 4167 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4168 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4169 break; 4170 } 4171 case CMP_RESULT_CODE_REDIRECTED: { 4172 if (DBG) log("CheckMp.onComplete: warm sim"); 4173 String url = getMobileProvisioningUrl(); 4174 if (TextUtils.isEmpty(url)) { 4175 url = getMobileRedirectedProvisioningUrl(); 4176 } 4177 if (TextUtils.isEmpty(url) == false) { 4178 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4179 setProvNotificationVisible(true, 4180 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4181 url); 4182 } else { 4183 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4184 } 4185 break; 4186 } 4187 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4188 String url = getMobileProvisioningUrl(); 4189 if (TextUtils.isEmpty(url) == false) { 4190 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4191 setProvNotificationVisible(true, 4192 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4193 url); 4194 // Mark that we've got a provisioning network and 4195 // Disable Mobile Data until user actually starts provisioning. 4196 mIsProvisioningNetwork.set(true); 4197 MobileDataStateTracker mdst = (MobileDataStateTracker) 4198 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4199 mdst.setInternalDataEnable(false); 4200 } else { 4201 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4202 } 4203 break; 4204 } 4205 case CMP_RESULT_CODE_IS_PROVISIONING: { 4206 // FIXME: Need to know when provisioning is done. Probably we can 4207 // check the completion status if successful we're done if we 4208 // "timedout" or still connected to provisioning APN turn off data? 4209 if (DBG) log("CheckMp.onComplete: provisioning started"); 4210 mIsStartingProvisioning.set(false); 4211 break; 4212 } 4213 default: { 4214 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4215 break; 4216 } 4217 } 4218 mIsCheckingMobileProvisioning.set(false); 4219 } 4220 }; 4221 CheckMp.Params params = 4222 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4223 if (DBG) log("checkMobileProvisioning: params=" + params); 4224 checkMp.execute(params); 4225 } finally { 4226 Binder.restoreCallingIdentity(token); 4227 if (DBG) log("checkMobileProvisioning: X"); 4228 } 4229 return timeOutMs; 4230 } 4231 4232 static class CheckMp extends 4233 AsyncTask<CheckMp.Params, Void, Integer> { 4234 private static final String CHECKMP_TAG = "CheckMp"; 4235 4236 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4237 private static boolean mTestingFailures; 4238 4239 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4240 private static final int MAX_LOOPS = 4; 4241 4242 // Number of milli-seconds to complete all of the retires 4243 public static final int MAX_TIMEOUT_MS = 60000; 4244 4245 // The socket should retry only 5 seconds, the default is longer 4246 private static final int SOCKET_TIMEOUT_MS = 5000; 4247 4248 // Sleep time for network errors 4249 private static final int NET_ERROR_SLEEP_SEC = 3; 4250 4251 // Sleep time for network route establishment 4252 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4253 4254 // Short sleep time for polling :( 4255 private static final int POLLING_SLEEP_SEC = 1; 4256 4257 private Context mContext; 4258 private ConnectivityService mCs; 4259 private TelephonyManager mTm; 4260 private Params mParams; 4261 4262 /** 4263 * Parameters for AsyncTask.execute 4264 */ 4265 static class Params { 4266 private String mUrl; 4267 private long mTimeOutMs; 4268 private CallBack mCb; 4269 4270 Params(String url, long timeOutMs, CallBack cb) { 4271 mUrl = url; 4272 mTimeOutMs = timeOutMs; 4273 mCb = cb; 4274 } 4275 4276 @Override 4277 public String toString() { 4278 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4279 } 4280 } 4281 4282 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4283 // issued by name or ip address, for Google its by name so when we construct 4284 // this HostnameVerifier we'll pass the original Uri and use it to verify 4285 // the host. If the host name in the original uril fails we'll test the 4286 // hostname parameter just incase things change. 4287 static class CheckMpHostnameVerifier implements HostnameVerifier { 4288 Uri mOrgUri; 4289 4290 CheckMpHostnameVerifier(Uri orgUri) { 4291 mOrgUri = orgUri; 4292 } 4293 4294 @Override 4295 public boolean verify(String hostname, SSLSession session) { 4296 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4297 String orgUriHost = mOrgUri.getHost(); 4298 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4299 if (DBG) { 4300 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4301 + " orgUriHost=" + orgUriHost); 4302 } 4303 return retVal; 4304 } 4305 } 4306 4307 /** 4308 * The call back object passed in Params. onComplete will be called 4309 * on the main thread. 4310 */ 4311 abstract static class CallBack { 4312 // Called on the main thread. 4313 abstract void onComplete(Integer result); 4314 } 4315 4316 public CheckMp(Context context, ConnectivityService cs) { 4317 if (Build.IS_DEBUGGABLE) { 4318 mTestingFailures = 4319 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4320 } else { 4321 mTestingFailures = false; 4322 } 4323 4324 mContext = context; 4325 mCs = cs; 4326 4327 // Setup access to TelephonyService we'll be using. 4328 mTm = (TelephonyManager) mContext.getSystemService( 4329 Context.TELEPHONY_SERVICE); 4330 } 4331 4332 /** 4333 * Get the default url to use for the test. 4334 */ 4335 public String getDefaultUrl() { 4336 // See http://go/clientsdns for usage approval 4337 String server = Settings.Global.getString(mContext.getContentResolver(), 4338 Settings.Global.CAPTIVE_PORTAL_SERVER); 4339 if (server == null) { 4340 server = "clients3.google.com"; 4341 } 4342 return "http://" + server + "/generate_204"; 4343 } 4344 4345 /** 4346 * Detect if its possible to connect to the http url. DNS based detection techniques 4347 * do not work at all hotspots. The best way to check is to perform a request to 4348 * a known address that fetches the data we expect. 4349 */ 4350 private synchronized Integer isMobileOk(Params params) { 4351 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4352 Uri orgUri = Uri.parse(params.mUrl); 4353 Random rand = new Random(); 4354 mParams = params; 4355 4356 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4357 result = CMP_RESULT_CODE_NO_CONNECTION; 4358 log("isMobileOk: X not mobile capable result=" + result); 4359 return result; 4360 } 4361 4362 if (mCs.mIsStartingProvisioning.get()) { 4363 result = CMP_RESULT_CODE_IS_PROVISIONING; 4364 log("isMobileOk: X is provisioning result=" + result); 4365 return result; 4366 } 4367 4368 // See if we've already determined we've got a provisioning connection, 4369 // if so we don't need to do anything active. 4370 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4371 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4372 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4373 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4374 4375 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4376 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4377 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4378 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4379 4380 if (isDefaultProvisioning || isHipriProvisioning) { 4381 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4382 log("isMobileOk: X default || hipri is provisioning result=" + result); 4383 return result; 4384 } 4385 4386 try { 4387 // Continue trying to connect until time has run out 4388 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4389 4390 if (!mCs.isMobileDataStateTrackerReady()) { 4391 // Wait for MobileDataStateTracker to be ready. 4392 if (DBG) log("isMobileOk: mdst is not ready"); 4393 while(SystemClock.elapsedRealtime() < endTime) { 4394 if (mCs.isMobileDataStateTrackerReady()) { 4395 // Enable fail fast as we'll do retries here and use a 4396 // hipri connection so the default connection stays active. 4397 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4398 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4399 break; 4400 } 4401 sleep(POLLING_SLEEP_SEC); 4402 } 4403 } 4404 4405 log("isMobileOk: start hipri url=" + params.mUrl); 4406 4407 // First wait until we can start using hipri 4408 Binder binder = new Binder(); 4409 while(SystemClock.elapsedRealtime() < endTime) { 4410 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4411 Phone.FEATURE_ENABLE_HIPRI, binder); 4412 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4413 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4414 log("isMobileOk: hipri started"); 4415 break; 4416 } 4417 if (VDBG) log("isMobileOk: hipri not started yet"); 4418 result = CMP_RESULT_CODE_NO_CONNECTION; 4419 sleep(POLLING_SLEEP_SEC); 4420 } 4421 4422 // Continue trying to connect until time has run out 4423 while(SystemClock.elapsedRealtime() < endTime) { 4424 try { 4425 // Wait for hipri to connect. 4426 // TODO: Don't poll and handle situation where hipri fails 4427 // because default is retrying. See b/9569540 4428 NetworkInfo.State state = mCs 4429 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4430 if (state != NetworkInfo.State.CONNECTED) { 4431 if (true/*VDBG*/) { 4432 log("isMobileOk: not connected ni=" + 4433 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4434 } 4435 sleep(POLLING_SLEEP_SEC); 4436 result = CMP_RESULT_CODE_NO_CONNECTION; 4437 continue; 4438 } 4439 4440 // Hipri has started check if this is a provisioning url 4441 MobileDataStateTracker mdst = (MobileDataStateTracker) 4442 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4443 if (mdst.isProvisioningNetwork()) { 4444 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4445 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4446 return result; 4447 } else { 4448 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4449 } 4450 4451 // Get of the addresses associated with the url host. We need to use the 4452 // address otherwise HttpURLConnection object will use the name to get 4453 // the addresses and will try every address but that will bypass the 4454 // route to host we setup and the connection could succeed as the default 4455 // interface might be connected to the internet via wifi or other interface. 4456 InetAddress[] addresses; 4457 try { 4458 addresses = InetAddress.getAllByName(orgUri.getHost()); 4459 } catch (UnknownHostException e) { 4460 result = CMP_RESULT_CODE_NO_DNS; 4461 log("isMobileOk: X UnknownHostException result=" + result); 4462 return result; 4463 } 4464 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4465 4466 // Get the type of addresses supported by this link 4467 LinkProperties lp = mCs.getLinkProperties( 4468 ConnectivityManager.TYPE_MOBILE_HIPRI); 4469 boolean linkHasIpv4 = lp.hasIPv4Address(); 4470 boolean linkHasIpv6 = lp.hasIPv6Address(); 4471 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4472 + " linkHasIpv6=" + linkHasIpv6); 4473 4474 final ArrayList<InetAddress> validAddresses = 4475 new ArrayList<InetAddress>(addresses.length); 4476 4477 for (InetAddress addr : addresses) { 4478 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4479 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4480 validAddresses.add(addr); 4481 } 4482 } 4483 4484 if (validAddresses.size() == 0) { 4485 return CMP_RESULT_CODE_NO_CONNECTION; 4486 } 4487 4488 int addrTried = 0; 4489 while (true) { 4490 // Loop through at most MAX_LOOPS valid addresses or until 4491 // we run out of time 4492 if (addrTried++ >= MAX_LOOPS) { 4493 log("isMobileOk: too many loops tried - giving up"); 4494 break; 4495 } 4496 if (SystemClock.elapsedRealtime() >= endTime) { 4497 log("isMobileOk: spend too much time - giving up"); 4498 break; 4499 } 4500 4501 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4502 validAddresses.size())); 4503 4504 // Make a route to host so we check the specific interface. 4505 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4506 hostAddr.getAddress(), null)) { 4507 // Wait a short time to be sure the route is established ?? 4508 log("isMobileOk:" 4509 + " wait to establish route to hostAddr=" + hostAddr); 4510 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4511 } else { 4512 log("isMobileOk:" 4513 + " could not establish route to hostAddr=" + hostAddr); 4514 // Wait a short time before the next attempt 4515 sleep(NET_ERROR_SLEEP_SEC); 4516 continue; 4517 } 4518 4519 // Rewrite the url to have numeric address to use the specific route 4520 // using http for half the attempts and https for the other half. 4521 // Doing https first and http second as on a redirected walled garden 4522 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4523 // handshake timed out" which we declare as 4524 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4525 // having http second we will be using logic used for some time. 4526 URL newUrl; 4527 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4528 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4529 orgUri.getPath()); 4530 log("isMobileOk: newUrl=" + newUrl); 4531 4532 HttpURLConnection urlConn = null; 4533 try { 4534 // Open the connection set the request headers and get the response 4535 urlConn = (HttpURLConnection)newUrl.openConnection( 4536 java.net.Proxy.NO_PROXY); 4537 if (scheme.equals("https")) { 4538 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4539 new CheckMpHostnameVerifier(orgUri)); 4540 } 4541 urlConn.setInstanceFollowRedirects(false); 4542 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4543 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4544 urlConn.setUseCaches(false); 4545 urlConn.setAllowUserInteraction(false); 4546 // Set the "Connection" to "Close" as by default "Keep-Alive" 4547 // is used which is useless in this case. 4548 urlConn.setRequestProperty("Connection", "close"); 4549 int responseCode = urlConn.getResponseCode(); 4550 4551 // For debug display the headers 4552 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4553 log("isMobileOk: headers=" + headers); 4554 4555 // Close the connection 4556 urlConn.disconnect(); 4557 urlConn = null; 4558 4559 if (mTestingFailures) { 4560 // Pretend no connection, this tests using http and https 4561 result = CMP_RESULT_CODE_NO_CONNECTION; 4562 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4563 continue; 4564 } 4565 4566 if (responseCode == 204) { 4567 // Return 4568 result = CMP_RESULT_CODE_CONNECTABLE; 4569 log("isMobileOk: X got expected responseCode=" + responseCode 4570 + " result=" + result); 4571 return result; 4572 } else { 4573 // Retry to be sure this was redirected, we've gotten 4574 // occasions where a server returned 200 even though 4575 // the device didn't have a "warm" sim. 4576 log("isMobileOk: not expected responseCode=" + responseCode); 4577 // TODO - it would be nice in the single-address case to do 4578 // another DNS resolve here, but flushing the cache is a bit 4579 // heavy-handed. 4580 result = CMP_RESULT_CODE_REDIRECTED; 4581 } 4582 } catch (Exception e) { 4583 log("isMobileOk: HttpURLConnection Exception" + e); 4584 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4585 if (urlConn != null) { 4586 urlConn.disconnect(); 4587 urlConn = null; 4588 } 4589 sleep(NET_ERROR_SLEEP_SEC); 4590 continue; 4591 } 4592 } 4593 log("isMobileOk: X loops|timed out result=" + result); 4594 return result; 4595 } catch (Exception e) { 4596 log("isMobileOk: Exception e=" + e); 4597 continue; 4598 } 4599 } 4600 log("isMobileOk: timed out"); 4601 } finally { 4602 log("isMobileOk: F stop hipri"); 4603 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4604 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4605 Phone.FEATURE_ENABLE_HIPRI); 4606 4607 // Wait for hipri to disconnect. 4608 long endTime = SystemClock.elapsedRealtime() + 5000; 4609 4610 while(SystemClock.elapsedRealtime() < endTime) { 4611 NetworkInfo.State state = mCs 4612 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4613 if (state != NetworkInfo.State.DISCONNECTED) { 4614 if (VDBG) { 4615 log("isMobileOk: connected ni=" + 4616 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4617 } 4618 sleep(POLLING_SLEEP_SEC); 4619 continue; 4620 } 4621 } 4622 4623 log("isMobileOk: X result=" + result); 4624 } 4625 return result; 4626 } 4627 4628 @Override 4629 protected Integer doInBackground(Params... params) { 4630 return isMobileOk(params[0]); 4631 } 4632 4633 @Override 4634 protected void onPostExecute(Integer result) { 4635 log("onPostExecute: result=" + result); 4636 if ((mParams != null) && (mParams.mCb != null)) { 4637 mParams.mCb.onComplete(result); 4638 } 4639 } 4640 4641 private String inetAddressesToString(InetAddress[] addresses) { 4642 StringBuffer sb = new StringBuffer(); 4643 boolean firstTime = true; 4644 for(InetAddress addr : addresses) { 4645 if (firstTime) { 4646 firstTime = false; 4647 } else { 4648 sb.append(","); 4649 } 4650 sb.append(addr); 4651 } 4652 return sb.toString(); 4653 } 4654 4655 private void printNetworkInfo() { 4656 boolean hasIccCard = mTm.hasIccCard(); 4657 int simState = mTm.getSimState(); 4658 log("hasIccCard=" + hasIccCard 4659 + " simState=" + simState); 4660 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4661 if (ni != null) { 4662 log("ni.length=" + ni.length); 4663 for (NetworkInfo netInfo: ni) { 4664 log("netInfo=" + netInfo.toString()); 4665 } 4666 } else { 4667 log("no network info ni=null"); 4668 } 4669 } 4670 4671 /** 4672 * Sleep for a few seconds then return. 4673 * @param seconds 4674 */ 4675 private static void sleep(int seconds) { 4676 long stopTime = System.nanoTime() + (seconds * 1000000000); 4677 long sleepTime; 4678 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4679 try { 4680 Thread.sleep(sleepTime / 1000000); 4681 } catch (InterruptedException ignored) { 4682 } 4683 } 4684 } 4685 4686 private static void log(String s) { 4687 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4688 } 4689 } 4690 4691 // TODO: Move to ConnectivityManager and make public? 4692 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4693 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4694 4695 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4696 @Override 4697 public void onReceive(Context context, Intent intent) { 4698 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4699 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4700 } 4701 } 4702 }; 4703 4704 private void handleMobileProvisioningAction(String url) { 4705 // Mark notification as not visible 4706 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4707 4708 // If provisioning network handle as a special case, 4709 // otherwise launch browser with the intent directly. 4710 if (mIsProvisioningNetwork.get()) { 4711 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4712 mIsStartingProvisioning.set(true); 4713 MobileDataStateTracker mdst = (MobileDataStateTracker) 4714 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4715 mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4716 mdst.enableMobileProvisioning(url); 4717 } else { 4718 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4719 // Check for apps that can handle provisioning first 4720 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4721 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4722 + mTelephonyManager.getSimOperator()); 4723 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4724 != null) { 4725 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4726 Intent.FLAG_ACTIVITY_NEW_TASK); 4727 mContext.startActivity(provisioningIntent); 4728 } else { 4729 // If no apps exist, use standard URL ACTION_VIEW method 4730 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4731 Intent.CATEGORY_APP_BROWSER); 4732 newIntent.setData(Uri.parse(url)); 4733 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4734 Intent.FLAG_ACTIVITY_NEW_TASK); 4735 try { 4736 mContext.startActivity(newIntent); 4737 } catch (ActivityNotFoundException e) { 4738 loge("handleMobileProvisioningAction: startActivity failed" + e); 4739 } 4740 } 4741 } 4742 } 4743 4744 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4745 private volatile boolean mIsNotificationVisible = false; 4746 4747 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4748 String url) { 4749 if (DBG) { 4750 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4751 + " extraInfo=" + extraInfo + " url=" + url); 4752 } 4753 4754 Resources r = Resources.getSystem(); 4755 NotificationManager notificationManager = (NotificationManager) mContext 4756 .getSystemService(Context.NOTIFICATION_SERVICE); 4757 4758 if (visible) { 4759 CharSequence title; 4760 CharSequence details; 4761 int icon; 4762 Intent intent; 4763 Notification notification = new Notification(); 4764 switch (networkType) { 4765 case ConnectivityManager.TYPE_WIFI: 4766 title = r.getString(R.string.wifi_available_sign_in, 0); 4767 details = r.getString(R.string.network_available_sign_in_detailed, 4768 extraInfo); 4769 icon = R.drawable.stat_notify_wifi_in_range; 4770 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4771 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4772 Intent.FLAG_ACTIVITY_NEW_TASK); 4773 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4774 break; 4775 case ConnectivityManager.TYPE_MOBILE: 4776 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4777 title = r.getString(R.string.network_available_sign_in, 0); 4778 // TODO: Change this to pull from NetworkInfo once a printable 4779 // name has been added to it 4780 details = mTelephonyManager.getNetworkOperatorName(); 4781 icon = R.drawable.stat_notify_rssi_in_range; 4782 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4783 intent.putExtra("EXTRA_URL", url); 4784 intent.setFlags(0); 4785 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4786 break; 4787 default: 4788 title = r.getString(R.string.network_available_sign_in, 0); 4789 details = r.getString(R.string.network_available_sign_in_detailed, 4790 extraInfo); 4791 icon = R.drawable.stat_notify_rssi_in_range; 4792 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4793 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4794 Intent.FLAG_ACTIVITY_NEW_TASK); 4795 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4796 break; 4797 } 4798 4799 notification.when = 0; 4800 notification.icon = icon; 4801 notification.flags = Notification.FLAG_AUTO_CANCEL; 4802 notification.tickerText = title; 4803 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4804 4805 try { 4806 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4807 } catch (NullPointerException npe) { 4808 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4809 npe.printStackTrace(); 4810 } 4811 } else { 4812 try { 4813 notificationManager.cancel(NOTIFICATION_ID, networkType); 4814 } catch (NullPointerException npe) { 4815 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4816 npe.printStackTrace(); 4817 } 4818 } 4819 mIsNotificationVisible = visible; 4820 } 4821 4822 /** Location to an updatable file listing carrier provisioning urls. 4823 * An example: 4824 * 4825 * <?xml version="1.0" encoding="utf-8"?> 4826 * <provisioningUrls> 4827 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4828 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4829 * </provisioningUrls> 4830 */ 4831 private static final String PROVISIONING_URL_PATH = 4832 "/data/misc/radio/provisioning_urls.xml"; 4833 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4834 4835 /** XML tag for root element. */ 4836 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4837 /** XML tag for individual url */ 4838 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4839 /** XML tag for redirected url */ 4840 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4841 /** XML attribute for mcc */ 4842 private static final String ATTR_MCC = "mcc"; 4843 /** XML attribute for mnc */ 4844 private static final String ATTR_MNC = "mnc"; 4845 4846 private static final int REDIRECTED_PROVISIONING = 1; 4847 private static final int PROVISIONING = 2; 4848 4849 private String getProvisioningUrlBaseFromFile(int type) { 4850 FileReader fileReader = null; 4851 XmlPullParser parser = null; 4852 Configuration config = mContext.getResources().getConfiguration(); 4853 String tagType; 4854 4855 switch (type) { 4856 case PROVISIONING: 4857 tagType = TAG_PROVISIONING_URL; 4858 break; 4859 case REDIRECTED_PROVISIONING: 4860 tagType = TAG_REDIRECTED_URL; 4861 break; 4862 default: 4863 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4864 type); 4865 } 4866 4867 try { 4868 fileReader = new FileReader(mProvisioningUrlFile); 4869 parser = Xml.newPullParser(); 4870 parser.setInput(fileReader); 4871 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4872 4873 while (true) { 4874 XmlUtils.nextElement(parser); 4875 4876 String element = parser.getName(); 4877 if (element == null) break; 4878 4879 if (element.equals(tagType)) { 4880 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4881 try { 4882 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4883 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4884 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4885 parser.next(); 4886 if (parser.getEventType() == XmlPullParser.TEXT) { 4887 return parser.getText(); 4888 } 4889 } 4890 } 4891 } catch (NumberFormatException e) { 4892 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4893 } 4894 } 4895 } 4896 return null; 4897 } catch (FileNotFoundException e) { 4898 loge("Carrier Provisioning Urls file not found"); 4899 } catch (XmlPullParserException e) { 4900 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4901 } catch (IOException e) { 4902 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4903 } finally { 4904 if (fileReader != null) { 4905 try { 4906 fileReader.close(); 4907 } catch (IOException e) {} 4908 } 4909 } 4910 return null; 4911 } 4912 4913 @Override 4914 public String getMobileRedirectedProvisioningUrl() { 4915 enforceConnectivityInternalPermission(); 4916 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4917 if (TextUtils.isEmpty(url)) { 4918 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4919 } 4920 return url; 4921 } 4922 4923 @Override 4924 public String getMobileProvisioningUrl() { 4925 enforceConnectivityInternalPermission(); 4926 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4927 if (TextUtils.isEmpty(url)) { 4928 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4929 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4930 } else { 4931 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4932 } 4933 // populate the iccid, imei and phone number in the provisioning url. 4934 if (!TextUtils.isEmpty(url)) { 4935 String phoneNumber = mTelephonyManager.getLine1Number(); 4936 if (TextUtils.isEmpty(phoneNumber)) { 4937 phoneNumber = "0000000000"; 4938 } 4939 url = String.format(url, 4940 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4941 mTelephonyManager.getDeviceId() /* IMEI */, 4942 phoneNumber /* Phone numer */); 4943 } 4944 4945 return url; 4946 } 4947 4948 @Override 4949 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4950 String extraInfo, String url) { 4951 enforceConnectivityInternalPermission(); 4952 setProvNotificationVisible(visible, networkType, extraInfo, url); 4953 } 4954 4955 @Override 4956 public void setAirplaneMode(boolean enable) { 4957 enforceConnectivityInternalPermission(); 4958 final long ident = Binder.clearCallingIdentity(); 4959 try { 4960 final ContentResolver cr = mContext.getContentResolver(); 4961 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4962 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4963 intent.putExtra("state", enable); 4964 mContext.sendBroadcast(intent); 4965 } finally { 4966 Binder.restoreCallingIdentity(ident); 4967 } 4968 } 4969 4970 private void onUserStart(int userId) { 4971 synchronized(mVpns) { 4972 Vpn userVpn = mVpns.get(userId); 4973 if (userVpn != null) { 4974 loge("Starting user already has a VPN"); 4975 return; 4976 } 4977 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 4978 mVpns.put(userId, userVpn); 4979 userVpn.startMonitoring(mContext, mTrackerHandler); 4980 } 4981 } 4982 4983 private void onUserStop(int userId) { 4984 synchronized(mVpns) { 4985 Vpn userVpn = mVpns.get(userId); 4986 if (userVpn == null) { 4987 loge("Stopping user has no VPN"); 4988 return; 4989 } 4990 mVpns.delete(userId); 4991 } 4992 } 4993 4994 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 4995 @Override 4996 public void onReceive(Context context, Intent intent) { 4997 final String action = intent.getAction(); 4998 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 4999 if (userId == UserHandle.USER_NULL) return; 5000 5001 if (Intent.ACTION_USER_STARTING.equals(action)) { 5002 onUserStart(userId); 5003 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5004 onUserStop(userId); 5005 } 5006 } 5007 }; 5008 5009 @Override 5010 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5011 enforceAccessPermission(); 5012 if (isNetworkTypeValid(networkType)) { 5013 return mNetTrackers[networkType].getLinkQualityInfo(); 5014 } else { 5015 return null; 5016 } 5017 } 5018 5019 @Override 5020 public LinkQualityInfo getActiveLinkQualityInfo() { 5021 enforceAccessPermission(); 5022 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 5023 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5024 } else { 5025 return null; 5026 } 5027 } 5028 5029 @Override 5030 public LinkQualityInfo[] getAllLinkQualityInfo() { 5031 enforceAccessPermission(); 5032 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5033 for (NetworkStateTracker tracker : mNetTrackers) { 5034 if (tracker != null) { 5035 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5036 if (li != null) { 5037 result.add(li); 5038 } 5039 } 5040 } 5041 5042 return result.toArray(new LinkQualityInfo[result.size()]); 5043 } 5044 5045 /* Infrastructure for network sampling */ 5046 5047 private void handleNetworkSamplingTimeout() { 5048 5049 log("Sampling interval elapsed, updating statistics .."); 5050 5051 // initialize list of interfaces .. 5052 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5053 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5054 for (NetworkStateTracker tracker : mNetTrackers) { 5055 if (tracker != null) { 5056 String ifaceName = tracker.getNetworkInterfaceName(); 5057 if (ifaceName != null) { 5058 mapIfaceToSample.put(ifaceName, null); 5059 } 5060 } 5061 } 5062 5063 // Read samples for all interfaces 5064 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5065 5066 // process samples for all networks 5067 for (NetworkStateTracker tracker : mNetTrackers) { 5068 if (tracker != null) { 5069 String ifaceName = tracker.getNetworkInterfaceName(); 5070 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5071 if (ss != null) { 5072 // end the previous sampling cycle 5073 tracker.stopSampling(ss); 5074 // start a new sampling cycle .. 5075 tracker.startSampling(ss); 5076 } 5077 } 5078 } 5079 5080 log("Done."); 5081 5082 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5083 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5084 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5085 5086 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5087 5088 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5089 } 5090 5091 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5092 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5093 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5094 } 5095 5096 private final ArrayList<AsyncChannel> mNetworkFactories = new ArrayList<AsyncChannel>(); 5097 5098 public void registerNetworkFactory(Messenger messenger) { 5099 enforceConnectivityInternalPermission(); 5100 5101 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, messenger)); 5102 } 5103 5104 private void handleRegisterNetworkFactory(Messenger messenger) { 5105 if (VDBG) log("Got NetworkFactory Messenger"); 5106 AsyncChannel ac = new AsyncChannel(); 5107 mNetworkFactories.add(ac); 5108 ac.connect(mContext, mTrackerHandler, messenger); 5109 } 5110 5111 private final SparseArray<NetworkRequest> mNetworkRequests = new SparseArray<NetworkRequest>(); 5112} 5113