ConnectivityService.java revision f9cb86aebe9647e0fe0137fc198ba16c017445c6
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_ETHERNET; 26import static android.net.ConnectivityManager.TYPE_MOBILE; 27import static android.net.ConnectivityManager.TYPE_WIFI; 28import static android.net.ConnectivityManager.TYPE_WIMAX; 29import static android.net.ConnectivityManager.TYPE_PROXY; 30import static android.net.ConnectivityManager.getNetworkTypeName; 31import static android.net.ConnectivityManager.isNetworkTypeValid; 32import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.app.AlarmManager; 36import android.app.AppOpsManager; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.bluetooth.BluetoothTetheringDataTracker; 41import android.content.ActivityNotFoundException; 42import android.content.BroadcastReceiver; 43import android.content.ContentResolver; 44import android.content.Context; 45import android.content.ContextWrapper; 46import android.content.Intent; 47import android.content.IntentFilter; 48import android.content.pm.ApplicationInfo; 49import android.content.pm.PackageManager; 50import android.content.pm.PackageManager.NameNotFoundException; 51import android.content.res.Configuration; 52import android.content.res.Resources; 53import android.database.ContentObserver; 54import android.net.CaptivePortalTracker; 55import android.net.ConnectivityManager; 56import android.net.DummyDataStateTracker; 57import android.net.EthernetDataTracker; 58import android.net.IConnectivityManager; 59import android.net.INetworkManagementEventObserver; 60import android.net.INetworkPolicyListener; 61import android.net.INetworkPolicyManager; 62import android.net.INetworkStatsService; 63import android.net.LinkAddress; 64import android.net.LinkProperties; 65import android.net.LinkProperties.CompareResult; 66import android.net.LinkQualityInfo; 67import android.net.MobileDataStateTracker; 68import android.net.Network; 69import android.net.NetworkConfig; 70import android.net.NetworkInfo; 71import android.net.NetworkInfo.DetailedState; 72import android.net.NetworkQuotaInfo; 73import android.net.NetworkState; 74import android.net.NetworkStateTracker; 75import android.net.NetworkUtils; 76import android.net.Proxy; 77import android.net.ProxyDataTracker; 78import android.net.ProxyInfo; 79import android.net.RouteInfo; 80import android.net.SamplingDataTracker; 81import android.net.Uri; 82import android.net.wifi.WifiStateTracker; 83import android.net.wimax.WimaxManagerConstants; 84import android.os.AsyncTask; 85import android.os.Binder; 86import android.os.Build; 87import android.os.FileUtils; 88import android.os.Handler; 89import android.os.HandlerThread; 90import android.os.IBinder; 91import android.os.INetworkManagementService; 92import android.os.Looper; 93import android.os.Message; 94import android.os.Messenger; 95import android.os.ParcelFileDescriptor; 96import android.os.PowerManager; 97import android.os.Process; 98import android.os.RemoteException; 99import android.os.ServiceManager; 100import android.os.SystemClock; 101import android.os.SystemProperties; 102import android.os.UserHandle; 103import android.provider.Settings; 104import android.security.Credentials; 105import android.security.KeyStore; 106import android.telephony.TelephonyManager; 107import android.text.TextUtils; 108import android.util.Slog; 109import android.util.SparseArray; 110import android.util.SparseIntArray; 111import android.util.Xml; 112 113import com.android.internal.R; 114import com.android.internal.annotations.GuardedBy; 115import com.android.internal.net.LegacyVpnInfo; 116import com.android.internal.net.VpnConfig; 117import com.android.internal.net.VpnProfile; 118import com.android.internal.telephony.DctConstants; 119import com.android.internal.telephony.Phone; 120import com.android.internal.telephony.PhoneConstants; 121import com.android.internal.telephony.TelephonyIntents; 122import com.android.internal.util.IndentingPrintWriter; 123import com.android.internal.util.XmlUtils; 124import com.android.server.am.BatteryStatsService; 125import com.android.server.connectivity.DataConnectionStats; 126import com.android.server.connectivity.Nat464Xlat; 127import com.android.server.connectivity.PacManager; 128import com.android.server.connectivity.Tethering; 129import com.android.server.connectivity.Vpn; 130import com.android.server.net.BaseNetworkObserver; 131import com.android.server.net.LockdownVpnTracker; 132import com.google.android.collect.Lists; 133import com.google.android.collect.Sets; 134 135import dalvik.system.DexClassLoader; 136 137import org.xmlpull.v1.XmlPullParser; 138import org.xmlpull.v1.XmlPullParserException; 139 140import java.io.File; 141import java.io.FileDescriptor; 142import java.io.FileNotFoundException; 143import java.io.FileReader; 144import java.io.IOException; 145import java.io.PrintWriter; 146import java.lang.reflect.Constructor; 147import java.net.HttpURLConnection; 148import java.net.Inet4Address; 149import java.net.Inet6Address; 150import java.net.InetAddress; 151import java.net.URL; 152import java.net.UnknownHostException; 153import java.util.ArrayList; 154import java.util.Arrays; 155import java.util.Collection; 156import java.util.GregorianCalendar; 157import java.util.HashMap; 158import java.util.HashSet; 159import java.util.List; 160import java.util.Map; 161import java.util.Random; 162import java.util.concurrent.atomic.AtomicBoolean; 163import java.util.concurrent.atomic.AtomicInteger; 164 165import javax.net.ssl.HostnameVerifier; 166import javax.net.ssl.HttpsURLConnection; 167import javax.net.ssl.SSLSession; 168 169import static android.net.ConnectivityManager.INVALID_NET_ID; 170 171/** 172 * @hide 173 */ 174public class ConnectivityService extends IConnectivityManager.Stub { 175 private static final String TAG = "ConnectivityService"; 176 177 private static final boolean DBG = true; 178 private static final boolean VDBG = false; 179 180 private static final boolean LOGD_RULES = false; 181 182 // TODO: create better separation between radio types and network types 183 184 // how long to wait before switching back to a radio's default network 185 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 186 // system property that can override the above value 187 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 188 "android.telephony.apn-restore"; 189 190 // Default value if FAIL_FAST_TIME_MS is not set 191 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 192 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 193 private static final String FAIL_FAST_TIME_MS = 194 "persist.radio.fail_fast_time_ms"; 195 196 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 197 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 198 199 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 200 201 private PendingIntent mSampleIntervalElapsedIntent; 202 203 // Set network sampling interval at 12 minutes, this way, even if the timers get 204 // aggregated, it will fire at around 15 minutes, which should allow us to 205 // aggregate this timer with other timers (specially the socket keep alive timers) 206 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 12 * 60); 207 208 // start network sampling a minute after booting ... 209 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 60); 210 211 AlarmManager mAlarmManager; 212 213 // used in recursive route setting to add gateways for the host for which 214 // a host route was requested. 215 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 216 217 private Tethering mTethering; 218 219 private KeyStore mKeyStore; 220 221 @GuardedBy("mVpns") 222 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 223 private VpnCallback mVpnCallback = new VpnCallback(); 224 225 private boolean mLockdownEnabled; 226 private LockdownVpnTracker mLockdownTracker; 227 228 private Nat464Xlat mClat; 229 230 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 231 private Object mRulesLock = new Object(); 232 /** Currently active network rules by UID. */ 233 private SparseIntArray mUidRules = new SparseIntArray(); 234 /** Set of ifaces that are costly. */ 235 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 236 237 /** 238 * Sometimes we want to refer to the individual network state 239 * trackers separately, and sometimes we just want to treat them 240 * abstractly. 241 */ 242 private NetworkStateTracker mNetTrackers[]; 243 244 /* Handles captive portal check on a network */ 245 private CaptivePortalTracker mCaptivePortalTracker; 246 247 /** 248 * The link properties that define the current links 249 */ 250 private LinkProperties mCurrentLinkProperties[]; 251 252 /** 253 * A per Net list of the PID's that requested access to the net 254 * used both as a refcount and for per-PID DNS selection 255 */ 256 private List<Integer> mNetRequestersPids[]; 257 258 // priority order of the nettrackers 259 // (excluding dynamically set mNetworkPreference) 260 // TODO - move mNetworkTypePreference into this 261 private int[] mPriorityList; 262 263 private Context mContext; 264 private int mNetworkPreference; 265 private int mActiveDefaultNetwork = -1; 266 // 0 is full bad, 100 is full good 267 private int mDefaultInetCondition = 0; 268 private int mDefaultInetConditionPublished = 0; 269 private boolean mInetConditionChangeInFlight = false; 270 private int mDefaultConnectionSequence = 0; 271 272 private Object mDnsLock = new Object(); 273 private int mNumDnsEntries; 274 275 private boolean mTestMode; 276 private static ConnectivityService sServiceInstance; 277 278 private INetworkManagementService mNetd; 279 private INetworkPolicyManager mPolicyManager; 280 281 private static final int ENABLED = 1; 282 private static final int DISABLED = 0; 283 284 private static final boolean ADD = true; 285 private static final boolean REMOVE = false; 286 287 private static final boolean TO_DEFAULT_TABLE = true; 288 private static final boolean TO_SECONDARY_TABLE = false; 289 290 private static final boolean EXEMPT = true; 291 private static final boolean UNEXEMPT = false; 292 293 /** 294 * used internally as a delayed event to make us switch back to the 295 * default network 296 */ 297 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 298 299 /** 300 * used internally to change our mobile data enabled flag 301 */ 302 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 303 304 /** 305 * used internally to change our network preference setting 306 * arg1 = networkType to prefer 307 */ 308 private static final int EVENT_SET_NETWORK_PREFERENCE = 3; 309 310 /** 311 * used internally to synchronize inet condition reports 312 * arg1 = networkType 313 * arg2 = condition (0 bad, 100 good) 314 */ 315 private static final int EVENT_INET_CONDITION_CHANGE = 4; 316 317 /** 318 * used internally to mark the end of inet condition hold periods 319 * arg1 = networkType 320 */ 321 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 322 323 /** 324 * used internally to set enable/disable cellular data 325 * arg1 = ENBALED or DISABLED 326 */ 327 private static final int EVENT_SET_MOBILE_DATA = 7; 328 329 /** 330 * used internally to clear a wakelock when transitioning 331 * from one net to another 332 */ 333 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 334 335 /** 336 * used internally to reload global proxy settings 337 */ 338 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 339 340 /** 341 * used internally to set external dependency met/unmet 342 * arg1 = ENABLED (met) or DISABLED (unmet) 343 * arg2 = NetworkType 344 */ 345 private static final int EVENT_SET_DEPENDENCY_MET = 10; 346 347 /** 348 * used internally to send a sticky broadcast delayed. 349 */ 350 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 351 352 /** 353 * Used internally to 354 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 355 */ 356 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 357 358 private static final int EVENT_VPN_STATE_CHANGED = 13; 359 360 /** 361 * Used internally to disable fail fast of mobile data 362 */ 363 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 364 365 /** 366 * user internally to indicate that data sampling interval is up 367 */ 368 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 369 370 /** 371 * PAC manager has received new port. 372 */ 373 private static final int EVENT_PROXY_HAS_CHANGED = 16; 374 375 /** Handler used for internal events. */ 376 private InternalHandler mHandler; 377 /** Handler used for incoming {@link NetworkStateTracker} events. */ 378 private NetworkStateTrackerHandler mTrackerHandler; 379 380 // list of DeathRecipients used to make sure features are turned off when 381 // a process dies 382 private List<FeatureUser> mFeatureUsers; 383 384 private boolean mSystemReady; 385 private Intent mInitialBroadcast; 386 387 private PowerManager.WakeLock mNetTransitionWakeLock; 388 private String mNetTransitionWakeLockCausedBy = ""; 389 private int mNetTransitionWakeLockSerialNumber; 390 private int mNetTransitionWakeLockTimeout; 391 392 private InetAddress mDefaultDns; 393 394 // Lock for protecting access to mAddedRoutes and mExemptAddresses 395 private final Object mRoutesLock = new Object(); 396 397 // this collection is used to refcount the added routes - if there are none left 398 // it's time to remove the route from the route table 399 @GuardedBy("mRoutesLock") 400 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 401 402 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 403 // used to handle cleanup of exempt rules 404 @GuardedBy("mRoutesLock") 405 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 406 407 // used in DBG mode to track inet condition reports 408 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 409 private ArrayList mInetLog; 410 411 // track the current default http proxy - tell the world if we get a new one (real change) 412 private ProxyInfo mDefaultProxy = null; 413 private Object mProxyLock = new Object(); 414 private boolean mDefaultProxyDisabled = false; 415 416 // track the global proxy. 417 private ProxyInfo mGlobalProxy = null; 418 419 private PacManager mPacManager = null; 420 421 private SettingsObserver mSettingsObserver; 422 423 private AppOpsManager mAppOpsManager; 424 425 NetworkConfig[] mNetConfigs; 426 int mNetworksDefined; 427 428 private static class RadioAttributes { 429 public int mSimultaneity; 430 public int mType; 431 public RadioAttributes(String init) { 432 String fragments[] = init.split(","); 433 mType = Integer.parseInt(fragments[0]); 434 mSimultaneity = Integer.parseInt(fragments[1]); 435 } 436 } 437 RadioAttributes[] mRadioAttributes; 438 439 // the set of network types that can only be enabled by system/sig apps 440 List mProtectedNetworks; 441 442 private DataConnectionStats mDataConnectionStats; 443 444 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 445 446 TelephonyManager mTelephonyManager; 447 448 private final static int MIN_NET_ID = 10; // some reserved marks 449 private final static int MAX_NET_ID = 65535; 450 private int mNextNetId = MIN_NET_ID; 451 452 public ConnectivityService(Context context, INetworkManagementService netd, 453 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 454 // Currently, omitting a NetworkFactory will create one internally 455 // TODO: create here when we have cleaner WiMAX support 456 this(context, netd, statsService, policyManager, null); 457 } 458 459 public ConnectivityService(Context context, INetworkManagementService netManager, 460 INetworkStatsService statsService, INetworkPolicyManager policyManager, 461 NetworkFactory netFactory) { 462 if (DBG) log("ConnectivityService starting up"); 463 464 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 465 handlerThread.start(); 466 mHandler = new InternalHandler(handlerThread.getLooper()); 467 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 468 469 if (netFactory == null) { 470 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 471 } 472 473 // setup our unique device name 474 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 475 String id = Settings.Secure.getString(context.getContentResolver(), 476 Settings.Secure.ANDROID_ID); 477 if (id != null && id.length() > 0) { 478 String name = new String("android-").concat(id); 479 SystemProperties.set("net.hostname", name); 480 } 481 } 482 483 // read our default dns server ip 484 String dns = Settings.Global.getString(context.getContentResolver(), 485 Settings.Global.DEFAULT_DNS_SERVER); 486 if (dns == null || dns.length() == 0) { 487 dns = context.getResources().getString( 488 com.android.internal.R.string.config_default_dns_server); 489 } 490 try { 491 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 492 } catch (IllegalArgumentException e) { 493 loge("Error setting defaultDns using " + dns); 494 } 495 496 mContext = checkNotNull(context, "missing Context"); 497 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 498 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 499 mKeyStore = KeyStore.getInstance(); 500 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 501 502 try { 503 mPolicyManager.registerListener(mPolicyListener); 504 } catch (RemoteException e) { 505 // ouch, no rules updates means some processes may never get network 506 loge("unable to register INetworkPolicyListener" + e.toString()); 507 } 508 509 final PowerManager powerManager = (PowerManager) context.getSystemService( 510 Context.POWER_SERVICE); 511 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 512 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 513 com.android.internal.R.integer.config_networkTransitionTimeout); 514 515 mNetTrackers = new NetworkStateTracker[ 516 ConnectivityManager.MAX_NETWORK_TYPE+1]; 517 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 518 519 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 520 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 521 522 // Load device network attributes from resources 523 String[] raStrings = context.getResources().getStringArray( 524 com.android.internal.R.array.radioAttributes); 525 for (String raString : raStrings) { 526 RadioAttributes r = new RadioAttributes(raString); 527 if (VDBG) log("raString=" + raString + " r=" + r); 528 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 529 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 530 continue; 531 } 532 if (mRadioAttributes[r.mType] != null) { 533 loge("Error in radioAttributes - ignoring attempt to redefine type " + 534 r.mType); 535 continue; 536 } 537 mRadioAttributes[r.mType] = r; 538 } 539 540 // TODO: What is the "correct" way to do determine if this is a wifi only device? 541 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 542 log("wifiOnly=" + wifiOnly); 543 String[] naStrings = context.getResources().getStringArray( 544 com.android.internal.R.array.networkAttributes); 545 for (String naString : naStrings) { 546 try { 547 NetworkConfig n = new NetworkConfig(naString); 548 if (VDBG) log("naString=" + naString + " config=" + n); 549 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 550 loge("Error in networkAttributes - ignoring attempt to define type " + 551 n.type); 552 continue; 553 } 554 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 555 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 556 n.type); 557 continue; 558 } 559 if (mNetConfigs[n.type] != null) { 560 loge("Error in networkAttributes - ignoring attempt to redefine type " + 561 n.type); 562 continue; 563 } 564 if (mRadioAttributes[n.radio] == null) { 565 loge("Error in networkAttributes - ignoring attempt to use undefined " + 566 "radio " + n.radio + " in network type " + n.type); 567 continue; 568 } 569 mNetConfigs[n.type] = n; 570 mNetworksDefined++; 571 } catch(Exception e) { 572 // ignore it - leave the entry null 573 } 574 } 575 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 576 577 mProtectedNetworks = new ArrayList<Integer>(); 578 int[] protectedNetworks = context.getResources().getIntArray( 579 com.android.internal.R.array.config_protectedNetworks); 580 for (int p : protectedNetworks) { 581 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 582 mProtectedNetworks.add(p); 583 } else { 584 if (DBG) loge("Ignoring protectedNetwork " + p); 585 } 586 } 587 588 // high priority first 589 mPriorityList = new int[mNetworksDefined]; 590 { 591 int insertionPoint = mNetworksDefined-1; 592 int currentLowest = 0; 593 int nextLowest = 0; 594 while (insertionPoint > -1) { 595 for (NetworkConfig na : mNetConfigs) { 596 if (na == null) continue; 597 if (na.priority < currentLowest) continue; 598 if (na.priority > currentLowest) { 599 if (na.priority < nextLowest || nextLowest == 0) { 600 nextLowest = na.priority; 601 } 602 continue; 603 } 604 mPriorityList[insertionPoint--] = na.type; 605 } 606 currentLowest = nextLowest; 607 nextLowest = 0; 608 } 609 } 610 611 // Update mNetworkPreference according to user mannually first then overlay config.xml 612 mNetworkPreference = getPersistedNetworkPreference(); 613 if (mNetworkPreference == -1) { 614 for (int n : mPriorityList) { 615 if (mNetConfigs[n].isDefault() && ConnectivityManager.isNetworkTypeValid(n)) { 616 mNetworkPreference = n; 617 break; 618 } 619 } 620 if (mNetworkPreference == -1) { 621 throw new IllegalStateException( 622 "You should set at least one default Network in config.xml!"); 623 } 624 } 625 626 mNetRequestersPids = 627 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 628 for (int i : mPriorityList) { 629 mNetRequestersPids[i] = new ArrayList<Integer>(); 630 } 631 632 mFeatureUsers = new ArrayList<FeatureUser>(); 633 634 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 635 && SystemProperties.get("ro.build.type").equals("eng"); 636 637 // Create and start trackers for hard-coded networks 638 for (int targetNetworkType : mPriorityList) { 639 final NetworkConfig config = mNetConfigs[targetNetworkType]; 640 final NetworkStateTracker tracker; 641 try { 642 tracker = netFactory.createTracker(targetNetworkType, config); 643 mNetTrackers[targetNetworkType] = tracker; 644 } catch (IllegalArgumentException e) { 645 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 646 + " tracker: " + e); 647 continue; 648 } 649 650 tracker.startMonitoring(context, mTrackerHandler); 651 if (config.isDefault()) { 652 tracker.reconnect(); 653 } 654 } 655 656 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 657 658 //set up the listener for user state for creating user VPNs 659 IntentFilter intentFilter = new IntentFilter(); 660 intentFilter.addAction(Intent.ACTION_USER_STARTING); 661 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 662 mContext.registerReceiverAsUser( 663 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 664 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 665 666 try { 667 mNetd.registerObserver(mTethering); 668 mNetd.registerObserver(mDataActivityObserver); 669 mNetd.registerObserver(mClat); 670 } catch (RemoteException e) { 671 loge("Error registering observer :" + e); 672 } 673 674 if (DBG) { 675 mInetLog = new ArrayList(); 676 } 677 678 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 679 mSettingsObserver.observe(mContext); 680 681 mDataConnectionStats = new DataConnectionStats(mContext); 682 mDataConnectionStats.startMonitoring(); 683 684 // start network sampling .. 685 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 686 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 687 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 688 689 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 690 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 691 692 IntentFilter filter = new IntentFilter(); 693 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 694 mContext.registerReceiver( 695 new BroadcastReceiver() { 696 @Override 697 public void onReceive(Context context, Intent intent) { 698 String action = intent.getAction(); 699 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 700 mHandler.sendMessage(mHandler.obtainMessage 701 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 702 } 703 } 704 }, 705 new IntentFilter(filter)); 706 707 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 708 709 filter = new IntentFilter(); 710 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 711 mContext.registerReceiver(mProvisioningReceiver, filter); 712 713 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 714 } 715 716 private synchronized int nextNetId() { 717 int netId = mNextNetId; 718 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 719 return netId; 720 } 721 722 /** 723 * Factory that creates {@link NetworkStateTracker} instances using given 724 * {@link NetworkConfig}. 725 */ 726 public interface NetworkFactory { 727 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 728 } 729 730 private static class DefaultNetworkFactory implements NetworkFactory { 731 private final Context mContext; 732 private final Handler mTrackerHandler; 733 734 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 735 mContext = context; 736 mTrackerHandler = trackerHandler; 737 } 738 739 @Override 740 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 741 switch (config.radio) { 742 case TYPE_WIFI: 743 return new WifiStateTracker(targetNetworkType, config.name); 744 case TYPE_MOBILE: 745 return new MobileDataStateTracker(targetNetworkType, config.name); 746 case TYPE_DUMMY: 747 return new DummyDataStateTracker(targetNetworkType, config.name); 748 case TYPE_BLUETOOTH: 749 return BluetoothTetheringDataTracker.getInstance(); 750 case TYPE_WIMAX: 751 return makeWimaxStateTracker(mContext, mTrackerHandler); 752 case TYPE_ETHERNET: 753 return EthernetDataTracker.getInstance(); 754 case TYPE_PROXY: 755 return new ProxyDataTracker(); 756 default: 757 throw new IllegalArgumentException( 758 "Trying to create a NetworkStateTracker for an unknown radio type: " 759 + config.radio); 760 } 761 } 762 } 763 764 /** 765 * Loads external WiMAX library and registers as system service, returning a 766 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 767 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 768 */ 769 private static NetworkStateTracker makeWimaxStateTracker( 770 Context context, Handler trackerHandler) { 771 // Initialize Wimax 772 DexClassLoader wimaxClassLoader; 773 Class wimaxStateTrackerClass = null; 774 Class wimaxServiceClass = null; 775 Class wimaxManagerClass; 776 String wimaxJarLocation; 777 String wimaxLibLocation; 778 String wimaxManagerClassName; 779 String wimaxServiceClassName; 780 String wimaxStateTrackerClassName; 781 782 NetworkStateTracker wimaxStateTracker = null; 783 784 boolean isWimaxEnabled = context.getResources().getBoolean( 785 com.android.internal.R.bool.config_wimaxEnabled); 786 787 if (isWimaxEnabled) { 788 try { 789 wimaxJarLocation = context.getResources().getString( 790 com.android.internal.R.string.config_wimaxServiceJarLocation); 791 wimaxLibLocation = context.getResources().getString( 792 com.android.internal.R.string.config_wimaxNativeLibLocation); 793 wimaxManagerClassName = context.getResources().getString( 794 com.android.internal.R.string.config_wimaxManagerClassname); 795 wimaxServiceClassName = context.getResources().getString( 796 com.android.internal.R.string.config_wimaxServiceClassname); 797 wimaxStateTrackerClassName = context.getResources().getString( 798 com.android.internal.R.string.config_wimaxStateTrackerClassname); 799 800 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 801 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 802 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 803 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 804 805 try { 806 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 807 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 808 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 809 } catch (ClassNotFoundException ex) { 810 loge("Exception finding Wimax classes: " + ex.toString()); 811 return null; 812 } 813 } catch(Resources.NotFoundException ex) { 814 loge("Wimax Resources does not exist!!! "); 815 return null; 816 } 817 818 try { 819 if (DBG) log("Starting Wimax Service... "); 820 821 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 822 (new Class[] {Context.class, Handler.class}); 823 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 824 context, trackerHandler); 825 826 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 827 (new Class[] {Context.class, wimaxStateTrackerClass}); 828 wmxSrvConst.setAccessible(true); 829 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 830 wmxSrvConst.setAccessible(false); 831 832 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 833 834 } catch(Exception ex) { 835 loge("Exception creating Wimax classes: " + ex.toString()); 836 return null; 837 } 838 } else { 839 loge("Wimax is not enabled or not added to the network attributes!!! "); 840 return null; 841 } 842 843 return wimaxStateTracker; 844 } 845 846 /** 847 * Sets the preferred network. 848 * @param preference the new preference 849 */ 850 public void setNetworkPreference(int preference) { 851 enforceChangePermission(); 852 853 mHandler.sendMessage( 854 mHandler.obtainMessage(EVENT_SET_NETWORK_PREFERENCE, preference, 0)); 855 } 856 857 public int getNetworkPreference() { 858 enforceAccessPermission(); 859 int preference; 860 synchronized(this) { 861 preference = mNetworkPreference; 862 } 863 return preference; 864 } 865 866 private void handleSetNetworkPreference(int preference) { 867 if (ConnectivityManager.isNetworkTypeValid(preference) && 868 mNetConfigs[preference] != null && 869 mNetConfigs[preference].isDefault()) { 870 if (mNetworkPreference != preference) { 871 final ContentResolver cr = mContext.getContentResolver(); 872 Settings.Global.putInt(cr, Settings.Global.NETWORK_PREFERENCE, preference); 873 synchronized(this) { 874 mNetworkPreference = preference; 875 } 876 enforcePreference(); 877 } 878 } 879 } 880 881 private int getConnectivityChangeDelay() { 882 final ContentResolver cr = mContext.getContentResolver(); 883 884 /** Check system properties for the default value then use secure settings value, if any. */ 885 int defaultDelay = SystemProperties.getInt( 886 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 887 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 888 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 889 defaultDelay); 890 } 891 892 private int getPersistedNetworkPreference() { 893 final ContentResolver cr = mContext.getContentResolver(); 894 895 final int networkPrefSetting = Settings.Global 896 .getInt(cr, Settings.Global.NETWORK_PREFERENCE, -1); 897 898 return networkPrefSetting; 899 } 900 901 /** 902 * Make the state of network connectivity conform to the preference settings 903 * In this method, we only tear down a non-preferred network. Establishing 904 * a connection to the preferred network is taken care of when we handle 905 * the disconnect event from the non-preferred network 906 * (see {@link #handleDisconnect(NetworkInfo)}). 907 */ 908 private void enforcePreference() { 909 if (mNetTrackers[mNetworkPreference].getNetworkInfo().isConnected()) 910 return; 911 912 if (!mNetTrackers[mNetworkPreference].isAvailable()) 913 return; 914 915 for (int t=0; t <= ConnectivityManager.MAX_RADIO_TYPE; t++) { 916 if (t != mNetworkPreference && mNetTrackers[t] != null && 917 mNetTrackers[t].getNetworkInfo().isConnected()) { 918 if (DBG) { 919 log("tearing down " + mNetTrackers[t].getNetworkInfo() + 920 " in enforcePreference"); 921 } 922 teardown(mNetTrackers[t]); 923 } 924 } 925 } 926 927 private boolean teardown(NetworkStateTracker netTracker) { 928 if (netTracker.teardown()) { 929 netTracker.setTeardownRequested(true); 930 return true; 931 } else { 932 return false; 933 } 934 } 935 936 /** 937 * Check if UID should be blocked from using the network represented by the 938 * given {@link NetworkStateTracker}. 939 */ 940 private boolean isNetworkBlocked(NetworkStateTracker tracker, int uid) { 941 final String iface = tracker.getLinkProperties().getInterfaceName(); 942 943 final boolean networkCostly; 944 final int uidRules; 945 synchronized (mRulesLock) { 946 networkCostly = mMeteredIfaces.contains(iface); 947 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 948 } 949 950 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 951 return true; 952 } 953 954 // no restrictive rules; network is visible 955 return false; 956 } 957 958 /** 959 * Return a filtered {@link NetworkInfo}, potentially marked 960 * {@link DetailedState#BLOCKED} based on 961 * {@link #isNetworkBlocked(NetworkStateTracker, int)}. 962 */ 963 private NetworkInfo getFilteredNetworkInfo(NetworkStateTracker tracker, int uid) { 964 NetworkInfo info = tracker.getNetworkInfo(); 965 if (isNetworkBlocked(tracker, uid)) { 966 // network is blocked; clone and override state 967 info = new NetworkInfo(info); 968 info.setDetailedState(DetailedState.BLOCKED, null, null); 969 } 970 if (mLockdownTracker != null) { 971 info = mLockdownTracker.augmentNetworkInfo(info); 972 } 973 return info; 974 } 975 976 /** 977 * Return NetworkInfo for the active (i.e., connected) network interface. 978 * It is assumed that at most one network is active at a time. If more 979 * than one is active, it is indeterminate which will be returned. 980 * @return the info for the active network, or {@code null} if none is 981 * active 982 */ 983 @Override 984 public NetworkInfo getActiveNetworkInfo() { 985 enforceAccessPermission(); 986 final int uid = Binder.getCallingUid(); 987 return getNetworkInfo(mActiveDefaultNetwork, uid); 988 } 989 990 /** 991 * Find the first Provisioning network. 992 * 993 * @return NetworkInfo or null if none. 994 */ 995 private NetworkInfo getProvisioningNetworkInfo() { 996 enforceAccessPermission(); 997 998 // Find the first Provisioning Network 999 NetworkInfo provNi = null; 1000 for (NetworkInfo ni : getAllNetworkInfo()) { 1001 if (ni.isConnectedToProvisioningNetwork()) { 1002 provNi = ni; 1003 break; 1004 } 1005 } 1006 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1007 return provNi; 1008 } 1009 1010 /** 1011 * Find the first Provisioning network or the ActiveDefaultNetwork 1012 * if there is no Provisioning network 1013 * 1014 * @return NetworkInfo or null if none. 1015 */ 1016 @Override 1017 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1018 enforceAccessPermission(); 1019 1020 NetworkInfo provNi = getProvisioningNetworkInfo(); 1021 if (provNi == null) { 1022 final int uid = Binder.getCallingUid(); 1023 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1024 } 1025 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1026 return provNi; 1027 } 1028 1029 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1030 enforceAccessPermission(); 1031 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1032 final NetworkStateTracker tracker = mNetTrackers[mActiveDefaultNetwork]; 1033 if (tracker != null) { 1034 return tracker.getNetworkInfo(); 1035 } 1036 } 1037 return null; 1038 } 1039 1040 @Override 1041 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1042 enforceConnectivityInternalPermission(); 1043 return getNetworkInfo(mActiveDefaultNetwork, uid); 1044 } 1045 1046 @Override 1047 public NetworkInfo getNetworkInfo(int networkType) { 1048 enforceAccessPermission(); 1049 final int uid = Binder.getCallingUid(); 1050 return getNetworkInfo(networkType, uid); 1051 } 1052 1053 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1054 NetworkInfo info = null; 1055 if (isNetworkTypeValid(networkType)) { 1056 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1057 if (tracker != null) { 1058 info = getFilteredNetworkInfo(tracker, uid); 1059 } 1060 } 1061 return info; 1062 } 1063 1064 @Override 1065 public NetworkInfo[] getAllNetworkInfo() { 1066 enforceAccessPermission(); 1067 final int uid = Binder.getCallingUid(); 1068 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1069 synchronized (mRulesLock) { 1070 for (NetworkStateTracker tracker : mNetTrackers) { 1071 if (tracker != null) { 1072 result.add(getFilteredNetworkInfo(tracker, uid)); 1073 } 1074 } 1075 } 1076 return result.toArray(new NetworkInfo[result.size()]); 1077 } 1078 1079 @Override 1080 public boolean isNetworkSupported(int networkType) { 1081 enforceAccessPermission(); 1082 return (isNetworkTypeValid(networkType) && (mNetTrackers[networkType] != null)); 1083 } 1084 1085 /** 1086 * Return LinkProperties for the active (i.e., connected) default 1087 * network interface. It is assumed that at most one default network 1088 * is active at a time. If more than one is active, it is indeterminate 1089 * which will be returned. 1090 * @return the ip properties for the active network, or {@code null} if 1091 * none is active 1092 */ 1093 @Override 1094 public LinkProperties getActiveLinkProperties() { 1095 return getLinkProperties(mActiveDefaultNetwork); 1096 } 1097 1098 @Override 1099 public LinkProperties getLinkProperties(int networkType) { 1100 enforceAccessPermission(); 1101 if (isNetworkTypeValid(networkType)) { 1102 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1103 if (tracker != null) { 1104 return tracker.getLinkProperties(); 1105 } 1106 } 1107 return null; 1108 } 1109 1110 @Override 1111 public NetworkState[] getAllNetworkState() { 1112 enforceAccessPermission(); 1113 final int uid = Binder.getCallingUid(); 1114 final ArrayList<NetworkState> result = Lists.newArrayList(); 1115 synchronized (mRulesLock) { 1116 for (NetworkStateTracker tracker : mNetTrackers) { 1117 if (tracker != null) { 1118 final NetworkInfo info = getFilteredNetworkInfo(tracker, uid); 1119 result.add(new NetworkState( 1120 info, tracker.getLinkProperties(), tracker.getNetworkCapabilities())); 1121 } 1122 } 1123 } 1124 return result.toArray(new NetworkState[result.size()]); 1125 } 1126 1127 private NetworkState getNetworkStateUnchecked(int networkType) { 1128 if (isNetworkTypeValid(networkType)) { 1129 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1130 if (tracker != null) { 1131 return new NetworkState(tracker.getNetworkInfo(), tracker.getLinkProperties(), 1132 tracker.getNetworkCapabilities()); 1133 } 1134 } 1135 return null; 1136 } 1137 1138 @Override 1139 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1140 enforceAccessPermission(); 1141 1142 final long token = Binder.clearCallingIdentity(); 1143 try { 1144 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1145 if (state != null) { 1146 try { 1147 return mPolicyManager.getNetworkQuotaInfo(state); 1148 } catch (RemoteException e) { 1149 } 1150 } 1151 return null; 1152 } finally { 1153 Binder.restoreCallingIdentity(token); 1154 } 1155 } 1156 1157 @Override 1158 public boolean isActiveNetworkMetered() { 1159 enforceAccessPermission(); 1160 final long token = Binder.clearCallingIdentity(); 1161 try { 1162 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1163 } finally { 1164 Binder.restoreCallingIdentity(token); 1165 } 1166 } 1167 1168 private boolean isNetworkMeteredUnchecked(int networkType) { 1169 final NetworkState state = getNetworkStateUnchecked(networkType); 1170 if (state != null) { 1171 try { 1172 return mPolicyManager.isNetworkMetered(state); 1173 } catch (RemoteException e) { 1174 } 1175 } 1176 return false; 1177 } 1178 1179 public boolean setRadios(boolean turnOn) { 1180 boolean result = true; 1181 enforceChangePermission(); 1182 for (NetworkStateTracker t : mNetTrackers) { 1183 if (t != null) result = t.setRadio(turnOn) && result; 1184 } 1185 return result; 1186 } 1187 1188 public boolean setRadio(int netType, boolean turnOn) { 1189 enforceChangePermission(); 1190 if (!ConnectivityManager.isNetworkTypeValid(netType)) { 1191 return false; 1192 } 1193 NetworkStateTracker tracker = mNetTrackers[netType]; 1194 return tracker != null && tracker.setRadio(turnOn); 1195 } 1196 1197 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1198 @Override 1199 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1200 int deviceType = Integer.parseInt(label); 1201 sendDataActivityBroadcast(deviceType, active, tsNanos); 1202 } 1203 }; 1204 1205 /** 1206 * Used to notice when the calling process dies so we can self-expire 1207 * 1208 * Also used to know if the process has cleaned up after itself when 1209 * our auto-expire timer goes off. The timer has a link to an object. 1210 * 1211 */ 1212 private class FeatureUser implements IBinder.DeathRecipient { 1213 int mNetworkType; 1214 String mFeature; 1215 IBinder mBinder; 1216 int mPid; 1217 int mUid; 1218 long mCreateTime; 1219 1220 FeatureUser(int type, String feature, IBinder binder) { 1221 super(); 1222 mNetworkType = type; 1223 mFeature = feature; 1224 mBinder = binder; 1225 mPid = getCallingPid(); 1226 mUid = getCallingUid(); 1227 mCreateTime = System.currentTimeMillis(); 1228 1229 try { 1230 mBinder.linkToDeath(this, 0); 1231 } catch (RemoteException e) { 1232 binderDied(); 1233 } 1234 } 1235 1236 void unlinkDeathRecipient() { 1237 mBinder.unlinkToDeath(this, 0); 1238 } 1239 1240 public void binderDied() { 1241 log("ConnectivityService FeatureUser binderDied(" + 1242 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1243 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1244 stopUsingNetworkFeature(this, false); 1245 } 1246 1247 public void expire() { 1248 if (VDBG) { 1249 log("ConnectivityService FeatureUser expire(" + 1250 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1251 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1252 } 1253 stopUsingNetworkFeature(this, false); 1254 } 1255 1256 public boolean isSameUser(FeatureUser u) { 1257 if (u == null) return false; 1258 1259 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1260 } 1261 1262 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1263 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1264 TextUtils.equals(mFeature, feature)) { 1265 return true; 1266 } 1267 return false; 1268 } 1269 1270 public String toString() { 1271 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1272 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1273 } 1274 } 1275 1276 // javadoc from interface 1277 public int startUsingNetworkFeature(int networkType, String feature, 1278 IBinder binder) { 1279 long startTime = 0; 1280 if (DBG) { 1281 startTime = SystemClock.elapsedRealtime(); 1282 } 1283 if (VDBG) { 1284 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1285 + Binder.getCallingUid()); 1286 } 1287 enforceChangePermission(); 1288 try { 1289 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1290 mNetConfigs[networkType] == null) { 1291 return PhoneConstants.APN_REQUEST_FAILED; 1292 } 1293 1294 FeatureUser f = new FeatureUser(networkType, feature, binder); 1295 1296 // TODO - move this into individual networktrackers 1297 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1298 1299 if (mLockdownEnabled) { 1300 // Since carrier APNs usually aren't available from VPN 1301 // endpoint, mark them as unavailable. 1302 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1303 } 1304 1305 if (mProtectedNetworks.contains(usedNetworkType)) { 1306 enforceConnectivityInternalPermission(); 1307 } 1308 1309 // if UID is restricted, don't allow them to bring up metered APNs 1310 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1311 final int uidRules; 1312 synchronized (mRulesLock) { 1313 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1314 } 1315 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1316 return PhoneConstants.APN_REQUEST_FAILED; 1317 } 1318 1319 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1320 if (network != null) { 1321 Integer currentPid = new Integer(getCallingPid()); 1322 if (usedNetworkType != networkType) { 1323 NetworkInfo ni = network.getNetworkInfo(); 1324 1325 if (ni.isAvailable() == false) { 1326 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1327 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1328 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1329 } else { 1330 // else make the attempt anyway - probably giving REQUEST_STARTED below 1331 if (DBG) { 1332 log("special network not available, but try anyway ni=" + 1333 ni.getTypeName()); 1334 } 1335 } 1336 } 1337 1338 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1339 1340 synchronized(this) { 1341 boolean addToList = true; 1342 if (restoreTimer < 0) { 1343 // In case there is no timer is specified for the feature, 1344 // make sure we don't add duplicate entry with the same request. 1345 for (FeatureUser u : mFeatureUsers) { 1346 if (u.isSameUser(f)) { 1347 // Duplicate user is found. Do not add. 1348 addToList = false; 1349 break; 1350 } 1351 } 1352 } 1353 1354 if (addToList) mFeatureUsers.add(f); 1355 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1356 // this gets used for per-pid dns when connected 1357 mNetRequestersPids[usedNetworkType].add(currentPid); 1358 } 1359 } 1360 1361 if (restoreTimer >= 0) { 1362 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1363 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1364 } 1365 1366 if ((ni.isConnectedOrConnecting() == true) && 1367 !network.isTeardownRequested()) { 1368 if (ni.isConnected() == true) { 1369 final long token = Binder.clearCallingIdentity(); 1370 try { 1371 // add the pid-specific dns 1372 handleDnsConfigurationChange(usedNetworkType); 1373 if (VDBG) log("special network already active"); 1374 } finally { 1375 Binder.restoreCallingIdentity(token); 1376 } 1377 return PhoneConstants.APN_ALREADY_ACTIVE; 1378 } 1379 if (VDBG) log("special network already connecting"); 1380 return PhoneConstants.APN_REQUEST_STARTED; 1381 } 1382 1383 // check if the radio in play can make another contact 1384 // assume if cannot for now 1385 1386 if (DBG) { 1387 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1388 feature); 1389 } 1390 if (network.reconnect()) { 1391 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1392 return PhoneConstants.APN_REQUEST_STARTED; 1393 } else { 1394 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1395 return PhoneConstants.APN_REQUEST_FAILED; 1396 } 1397 } else { 1398 // need to remember this unsupported request so we respond appropriately on stop 1399 synchronized(this) { 1400 mFeatureUsers.add(f); 1401 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1402 // this gets used for per-pid dns when connected 1403 mNetRequestersPids[usedNetworkType].add(currentPid); 1404 } 1405 } 1406 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1407 return -1; 1408 } 1409 } 1410 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1411 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1412 } finally { 1413 if (DBG) { 1414 final long execTime = SystemClock.elapsedRealtime() - startTime; 1415 if (execTime > 250) { 1416 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1417 } else { 1418 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1419 } 1420 } 1421 } 1422 } 1423 1424 // javadoc from interface 1425 public int stopUsingNetworkFeature(int networkType, String feature) { 1426 enforceChangePermission(); 1427 1428 int pid = getCallingPid(); 1429 int uid = getCallingUid(); 1430 1431 FeatureUser u = null; 1432 boolean found = false; 1433 1434 synchronized(this) { 1435 for (FeatureUser x : mFeatureUsers) { 1436 if (x.isSameUser(pid, uid, networkType, feature)) { 1437 u = x; 1438 found = true; 1439 break; 1440 } 1441 } 1442 } 1443 if (found && u != null) { 1444 if (VDBG) log("stopUsingNetworkFeature: X"); 1445 // stop regardless of how many other time this proc had called start 1446 return stopUsingNetworkFeature(u, true); 1447 } else { 1448 // none found! 1449 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1450 return 1; 1451 } 1452 } 1453 1454 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1455 int networkType = u.mNetworkType; 1456 String feature = u.mFeature; 1457 int pid = u.mPid; 1458 int uid = u.mUid; 1459 1460 NetworkStateTracker tracker = null; 1461 boolean callTeardown = false; // used to carry our decision outside of sync block 1462 1463 if (VDBG) { 1464 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1465 } 1466 1467 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1468 if (DBG) { 1469 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1470 ", net is invalid"); 1471 } 1472 return -1; 1473 } 1474 1475 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1476 // sync block 1477 synchronized(this) { 1478 // check if this process still has an outstanding start request 1479 if (!mFeatureUsers.contains(u)) { 1480 if (VDBG) { 1481 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1482 ", ignoring"); 1483 } 1484 return 1; 1485 } 1486 u.unlinkDeathRecipient(); 1487 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1488 // If we care about duplicate requests, check for that here. 1489 // 1490 // This is done to support the extension of a request - the app 1491 // can request we start the network feature again and renew the 1492 // auto-shutoff delay. Normal "stop" calls from the app though 1493 // do not pay attention to duplicate requests - in effect the 1494 // API does not refcount and a single stop will counter multiple starts. 1495 if (ignoreDups == false) { 1496 for (FeatureUser x : mFeatureUsers) { 1497 if (x.isSameUser(u)) { 1498 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1499 return 1; 1500 } 1501 } 1502 } 1503 1504 // TODO - move to individual network trackers 1505 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1506 1507 tracker = mNetTrackers[usedNetworkType]; 1508 if (tracker == null) { 1509 if (DBG) { 1510 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1511 " no known tracker for used net type " + usedNetworkType); 1512 } 1513 return -1; 1514 } 1515 if (usedNetworkType != networkType) { 1516 Integer currentPid = new Integer(pid); 1517 mNetRequestersPids[usedNetworkType].remove(currentPid); 1518 1519 final long token = Binder.clearCallingIdentity(); 1520 try { 1521 reassessPidDns(pid, true); 1522 } finally { 1523 Binder.restoreCallingIdentity(token); 1524 } 1525 flushVmDnsCache(); 1526 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1527 if (VDBG) { 1528 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1529 " others still using it"); 1530 } 1531 return 1; 1532 } 1533 callTeardown = true; 1534 } else { 1535 if (DBG) { 1536 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1537 " not a known feature - dropping"); 1538 } 1539 } 1540 } 1541 1542 if (callTeardown) { 1543 if (DBG) { 1544 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1545 } 1546 tracker.teardown(); 1547 return 1; 1548 } else { 1549 return -1; 1550 } 1551 } 1552 1553 /** 1554 * Check if the address falls into any of currently running VPN's route's. 1555 */ 1556 private boolean isAddressUnderVpn(InetAddress address) { 1557 synchronized (mVpns) { 1558 synchronized (mRoutesLock) { 1559 int uid = UserHandle.getCallingUserId(); 1560 Vpn vpn = mVpns.get(uid); 1561 if (vpn == null) { 1562 return false; 1563 } 1564 1565 // Check if an exemption exists for this address. 1566 for (LinkAddress destination : mExemptAddresses) { 1567 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1568 continue; 1569 } 1570 1571 int prefix = destination.getNetworkPrefixLength(); 1572 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1573 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1574 prefix); 1575 1576 if (addrMasked.equals(destMasked)) { 1577 return false; 1578 } 1579 } 1580 1581 // Finally check if the address is covered by the VPN. 1582 return vpn.isAddressCovered(address); 1583 } 1584 } 1585 } 1586 1587 /** 1588 * @deprecated use requestRouteToHostAddress instead 1589 * 1590 * Ensure that a network route exists to deliver traffic to the specified 1591 * host via the specified network interface. 1592 * @param networkType the type of the network over which traffic to the 1593 * specified host is to be routed 1594 * @param hostAddress the IP address of the host to which the route is 1595 * desired 1596 * @return {@code true} on success, {@code false} on failure 1597 */ 1598 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1599 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1600 1601 if (inetAddress == null) { 1602 return false; 1603 } 1604 1605 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1606 } 1607 1608 /** 1609 * Ensure that a network route exists to deliver traffic to the specified 1610 * host via the specified network interface. 1611 * @param networkType the type of the network over which traffic to the 1612 * specified host is to be routed 1613 * @param hostAddress the IP address of the host to which the route is 1614 * desired 1615 * @return {@code true} on success, {@code false} on failure 1616 */ 1617 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1618 String packageName) { 1619 enforceChangePermission(); 1620 if (mProtectedNetworks.contains(networkType)) { 1621 enforceConnectivityInternalPermission(); 1622 } 1623 boolean exempt; 1624 InetAddress addr; 1625 try { 1626 addr = InetAddress.getByAddress(hostAddress); 1627 } catch (UnknownHostException e) { 1628 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1629 return false; 1630 } 1631 // System apps may request routes bypassing the VPN to keep other networks working. 1632 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1633 exempt = true; 1634 } else { 1635 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1636 try { 1637 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1638 0); 1639 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1640 } catch (NameNotFoundException e) { 1641 throw new IllegalArgumentException("Failed to find calling package details", e); 1642 } 1643 } 1644 1645 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1646 // This can be either because the VPN's routes do not cover the destination or a 1647 // system application added an exemption that covers this destination. 1648 if (!exempt && isAddressUnderVpn(addr)) { 1649 return false; 1650 } 1651 1652 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1653 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1654 return false; 1655 } 1656 NetworkStateTracker tracker = mNetTrackers[networkType]; 1657 DetailedState netState = DetailedState.DISCONNECTED; 1658 if (tracker != null) { 1659 netState = tracker.getNetworkInfo().getDetailedState(); 1660 } 1661 1662 if ((netState != DetailedState.CONNECTED && 1663 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1664 tracker.isTeardownRequested()) { 1665 if (VDBG) { 1666 log("requestRouteToHostAddress on down network " 1667 + "(" + networkType + ") - dropped" 1668 + " tracker=" + tracker 1669 + " netState=" + netState 1670 + " isTeardownRequested=" 1671 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1672 } 1673 return false; 1674 } 1675 final long token = Binder.clearCallingIdentity(); 1676 try { 1677 LinkProperties lp = tracker.getLinkProperties(); 1678 boolean ok = addRouteToAddress(lp, addr, exempt); 1679 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1680 return ok; 1681 } finally { 1682 Binder.restoreCallingIdentity(token); 1683 } 1684 } 1685 1686 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1687 boolean exempt) { 1688 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt); 1689 } 1690 1691 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable) { 1692 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT); 1693 } 1694 1695 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt) { 1696 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt); 1697 } 1698 1699 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr) { 1700 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT); 1701 } 1702 1703 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1704 boolean toDefaultTable, boolean exempt) { 1705 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1706 if (bestRoute == null) { 1707 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1708 } else { 1709 String iface = bestRoute.getInterface(); 1710 if (bestRoute.getGateway().equals(addr)) { 1711 // if there is no better route, add the implied hostroute for our gateway 1712 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1713 } else { 1714 // if we will connect to this through another route, add a direct route 1715 // to it's gateway 1716 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1717 } 1718 } 1719 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt); 1720 } 1721 1722 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1723 boolean toDefaultTable, boolean exempt) { 1724 if ((lp == null) || (r == null)) { 1725 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1726 return false; 1727 } 1728 1729 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1730 loge("Error modifying route - too much recursion"); 1731 return false; 1732 } 1733 1734 String ifaceName = r.getInterface(); 1735 if(ifaceName == null) { 1736 loge("Error modifying route - no interface name"); 1737 return false; 1738 } 1739 if (r.hasGateway()) { 1740 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1741 if (bestRoute != null) { 1742 if (bestRoute.getGateway().equals(r.getGateway())) { 1743 // if there is no better route, add the implied hostroute for our gateway 1744 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1745 } else { 1746 // if we will connect to our gateway through another route, add a direct 1747 // route to it's gateway 1748 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1749 bestRoute.getGateway(), 1750 ifaceName); 1751 } 1752 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt); 1753 } 1754 } 1755 if (doAdd) { 1756 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1757 try { 1758 if (toDefaultTable) { 1759 synchronized (mRoutesLock) { 1760 // only track default table - only one apps can effect 1761 mAddedRoutes.add(r); 1762 mNetd.addRoute(ifaceName, r); 1763 if (exempt) { 1764 LinkAddress dest = r.getDestination(); 1765 if (!mExemptAddresses.contains(dest)) { 1766 mNetd.setHostExemption(dest); 1767 mExemptAddresses.add(dest); 1768 } 1769 } 1770 } 1771 } else { 1772 mNetd.addSecondaryRoute(ifaceName, r); 1773 } 1774 } catch (Exception e) { 1775 // never crash - catch them all 1776 if (DBG) loge("Exception trying to add a route: " + e); 1777 return false; 1778 } 1779 } else { 1780 // if we remove this one and there are no more like it, then refcount==0 and 1781 // we can remove it from the table 1782 if (toDefaultTable) { 1783 synchronized (mRoutesLock) { 1784 mAddedRoutes.remove(r); 1785 if (mAddedRoutes.contains(r) == false) { 1786 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1787 try { 1788 mNetd.removeRoute(ifaceName, r); 1789 LinkAddress dest = r.getDestination(); 1790 if (mExemptAddresses.contains(dest)) { 1791 mNetd.clearHostExemption(dest); 1792 mExemptAddresses.remove(dest); 1793 } 1794 } catch (Exception e) { 1795 // never crash - catch them all 1796 if (VDBG) loge("Exception trying to remove a route: " + e); 1797 return false; 1798 } 1799 } else { 1800 if (VDBG) log("not removing " + r + " as it's still in use"); 1801 } 1802 } 1803 } else { 1804 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1805 try { 1806 mNetd.removeSecondaryRoute(ifaceName, r); 1807 } catch (Exception e) { 1808 // never crash - catch them all 1809 if (VDBG) loge("Exception trying to remove a route: " + e); 1810 return false; 1811 } 1812 } 1813 } 1814 return true; 1815 } 1816 1817 /** 1818 * @see ConnectivityManager#getMobileDataEnabled() 1819 */ 1820 public boolean getMobileDataEnabled() { 1821 // TODO: This detail should probably be in DataConnectionTracker's 1822 // which is where we store the value and maybe make this 1823 // asynchronous. 1824 enforceAccessPermission(); 1825 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1826 Settings.Global.MOBILE_DATA, 1) == 1; 1827 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1828 return retVal; 1829 } 1830 1831 public void setDataDependency(int networkType, boolean met) { 1832 enforceConnectivityInternalPermission(); 1833 1834 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1835 (met ? ENABLED : DISABLED), networkType)); 1836 } 1837 1838 private void handleSetDependencyMet(int networkType, boolean met) { 1839 if (mNetTrackers[networkType] != null) { 1840 if (DBG) { 1841 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1842 } 1843 mNetTrackers[networkType].setDependencyMet(met); 1844 } 1845 } 1846 1847 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1848 @Override 1849 public void onUidRulesChanged(int uid, int uidRules) { 1850 // caller is NPMS, since we only register with them 1851 if (LOGD_RULES) { 1852 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1853 } 1854 1855 synchronized (mRulesLock) { 1856 // skip update when we've already applied rules 1857 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1858 if (oldRules == uidRules) return; 1859 1860 mUidRules.put(uid, uidRules); 1861 } 1862 1863 // TODO: notify UID when it has requested targeted updates 1864 } 1865 1866 @Override 1867 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1868 // caller is NPMS, since we only register with them 1869 if (LOGD_RULES) { 1870 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1871 } 1872 1873 synchronized (mRulesLock) { 1874 mMeteredIfaces.clear(); 1875 for (String iface : meteredIfaces) { 1876 mMeteredIfaces.add(iface); 1877 } 1878 } 1879 } 1880 1881 @Override 1882 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1883 // caller is NPMS, since we only register with them 1884 if (LOGD_RULES) { 1885 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1886 } 1887 1888 // kick off connectivity change broadcast for active network, since 1889 // global background policy change is radical. 1890 final int networkType = mActiveDefaultNetwork; 1891 if (isNetworkTypeValid(networkType)) { 1892 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1893 if (tracker != null) { 1894 final NetworkInfo info = tracker.getNetworkInfo(); 1895 if (info != null && info.isConnected()) { 1896 sendConnectedBroadcast(info); 1897 } 1898 } 1899 } 1900 } 1901 }; 1902 1903 /** 1904 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1905 */ 1906 public void setMobileDataEnabled(boolean enabled) { 1907 enforceChangePermission(); 1908 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1909 1910 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1911 (enabled ? ENABLED : DISABLED), 0)); 1912 } 1913 1914 private void handleSetMobileData(boolean enabled) { 1915 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1916 if (VDBG) { 1917 log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1918 } 1919 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled); 1920 } 1921 if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) { 1922 if (VDBG) { 1923 log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled); 1924 } 1925 mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled); 1926 } 1927 } 1928 1929 @Override 1930 public void setPolicyDataEnable(int networkType, boolean enabled) { 1931 // only someone like NPMS should only be calling us 1932 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1933 1934 mHandler.sendMessage(mHandler.obtainMessage( 1935 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1936 } 1937 1938 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1939 if (isNetworkTypeValid(networkType)) { 1940 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1941 if (tracker != null) { 1942 tracker.setPolicyDataEnable(enabled); 1943 } 1944 } 1945 } 1946 1947 private void enforceAccessPermission() { 1948 mContext.enforceCallingOrSelfPermission( 1949 android.Manifest.permission.ACCESS_NETWORK_STATE, 1950 "ConnectivityService"); 1951 } 1952 1953 private void enforceChangePermission() { 1954 mContext.enforceCallingOrSelfPermission( 1955 android.Manifest.permission.CHANGE_NETWORK_STATE, 1956 "ConnectivityService"); 1957 } 1958 1959 // TODO Make this a special check when it goes public 1960 private void enforceTetherChangePermission() { 1961 mContext.enforceCallingOrSelfPermission( 1962 android.Manifest.permission.CHANGE_NETWORK_STATE, 1963 "ConnectivityService"); 1964 } 1965 1966 private void enforceTetherAccessPermission() { 1967 mContext.enforceCallingOrSelfPermission( 1968 android.Manifest.permission.ACCESS_NETWORK_STATE, 1969 "ConnectivityService"); 1970 } 1971 1972 private void enforceConnectivityInternalPermission() { 1973 mContext.enforceCallingOrSelfPermission( 1974 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1975 "ConnectivityService"); 1976 } 1977 1978 private void enforceMarkNetworkSocketPermission() { 1979 //Media server special case 1980 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1981 return; 1982 } 1983 mContext.enforceCallingOrSelfPermission( 1984 android.Manifest.permission.MARK_NETWORK_SOCKET, 1985 "ConnectivityService"); 1986 } 1987 1988 /** 1989 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1990 * network, we ignore it. If it is for the active network, we send out a 1991 * broadcast. But first, we check whether it might be possible to connect 1992 * to a different network. 1993 * @param info the {@code NetworkInfo} for the network 1994 */ 1995 private void handleDisconnect(NetworkInfo info) { 1996 1997 int prevNetType = info.getType(); 1998 1999 mNetTrackers[prevNetType].setTeardownRequested(false); 2000 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2001 2002 // Remove idletimer previously setup in {@code handleConnect} 2003 if (mNetConfigs[prevNetType].isDefault()) { 2004 removeDataActivityTracking(prevNetType); 2005 } 2006 2007 /* 2008 * If the disconnected network is not the active one, then don't report 2009 * this as a loss of connectivity. What probably happened is that we're 2010 * getting the disconnect for a network that we explicitly disabled 2011 * in accordance with network preference policies. 2012 */ 2013 if (!mNetConfigs[prevNetType].isDefault()) { 2014 List<Integer> pids = mNetRequestersPids[prevNetType]; 2015 for (Integer pid : pids) { 2016 // will remove them because the net's no longer connected 2017 // need to do this now as only now do we know the pids and 2018 // can properly null things that are no longer referenced. 2019 reassessPidDns(pid.intValue(), false); 2020 } 2021 } 2022 2023 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2024 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2025 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2026 if (info.isFailover()) { 2027 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2028 info.setFailover(false); 2029 } 2030 if (info.getReason() != null) { 2031 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2032 } 2033 if (info.getExtraInfo() != null) { 2034 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2035 info.getExtraInfo()); 2036 } 2037 2038 if (mNetConfigs[prevNetType].isDefault()) { 2039 tryFailover(prevNetType); 2040 if (mActiveDefaultNetwork != -1) { 2041 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2042 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2043 } else { 2044 mDefaultInetConditionPublished = 0; // we're not connected anymore 2045 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2046 } 2047 } 2048 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2049 2050 // Reset interface if no other connections are using the same interface 2051 boolean doReset = true; 2052 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2053 if (linkProperties != null) { 2054 String oldIface = linkProperties.getInterfaceName(); 2055 if (TextUtils.isEmpty(oldIface) == false) { 2056 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2057 if (networkStateTracker == null) continue; 2058 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2059 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2060 LinkProperties l = networkStateTracker.getLinkProperties(); 2061 if (l == null) continue; 2062 if (oldIface.equals(l.getInterfaceName())) { 2063 doReset = false; 2064 break; 2065 } 2066 } 2067 } 2068 } 2069 } 2070 2071 // do this before we broadcast the change 2072 handleConnectivityChange(prevNetType, doReset); 2073 2074 final Intent immediateIntent = new Intent(intent); 2075 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2076 sendStickyBroadcast(immediateIntent); 2077 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2078 /* 2079 * If the failover network is already connected, then immediately send 2080 * out a followup broadcast indicating successful failover 2081 */ 2082 if (mActiveDefaultNetwork != -1) { 2083 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2084 getConnectivityChangeDelay()); 2085 } 2086 try { 2087 mNetd.removeNetwork(thisNetId); 2088 } catch (Exception e) { 2089 loge("Exception removing network: " + e); 2090 } finally { 2091 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2092 } 2093 } 2094 2095 private void tryFailover(int prevNetType) { 2096 /* 2097 * If this is a default network, check if other defaults are available. 2098 * Try to reconnect on all available and let them hash it out when 2099 * more than one connects. 2100 */ 2101 if (mNetConfigs[prevNetType].isDefault()) { 2102 if (mActiveDefaultNetwork == prevNetType) { 2103 if (DBG) { 2104 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2105 } 2106 mActiveDefaultNetwork = -1; 2107 } 2108 2109 // don't signal a reconnect for anything lower or equal priority than our 2110 // current connected default 2111 // TODO - don't filter by priority now - nice optimization but risky 2112// int currentPriority = -1; 2113// if (mActiveDefaultNetwork != -1) { 2114// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2115// } 2116 2117 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2118 if (checkType == prevNetType) continue; 2119 if (mNetConfigs[checkType] == null) continue; 2120 if (!mNetConfigs[checkType].isDefault()) continue; 2121 if (mNetTrackers[checkType] == null) continue; 2122 2123// Enabling the isAvailable() optimization caused mobile to not get 2124// selected if it was in the middle of error handling. Specifically 2125// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2126// would not be available and we wouldn't get connected to anything. 2127// So removing the isAvailable() optimization below for now. TODO: This 2128// optimization should work and we need to investigate why it doesn't work. 2129// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2130// complete before it is really complete. 2131 2132// if (!mNetTrackers[checkType].isAvailable()) continue; 2133 2134// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2135 2136 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2137 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2138 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2139 checkInfo.setFailover(true); 2140 checkTracker.reconnect(); 2141 } 2142 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2143 } 2144 } 2145 } 2146 2147 public void sendConnectedBroadcast(NetworkInfo info) { 2148 enforceConnectivityInternalPermission(); 2149 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2150 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2151 } 2152 2153 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2154 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2155 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2156 } 2157 2158 private void sendInetConditionBroadcast(NetworkInfo info) { 2159 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2160 } 2161 2162 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2163 if (mLockdownTracker != null) { 2164 info = mLockdownTracker.augmentNetworkInfo(info); 2165 } 2166 2167 Intent intent = new Intent(bcastType); 2168 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2169 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2170 if (info.isFailover()) { 2171 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2172 info.setFailover(false); 2173 } 2174 if (info.getReason() != null) { 2175 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2176 } 2177 if (info.getExtraInfo() != null) { 2178 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2179 info.getExtraInfo()); 2180 } 2181 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2182 return intent; 2183 } 2184 2185 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2186 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2187 } 2188 2189 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2190 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2191 } 2192 2193 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2194 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2195 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2196 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2197 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2198 final long ident = Binder.clearCallingIdentity(); 2199 try { 2200 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2201 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2202 } finally { 2203 Binder.restoreCallingIdentity(ident); 2204 } 2205 } 2206 2207 /** 2208 * Called when an attempt to fail over to another network has failed. 2209 * @param info the {@link NetworkInfo} for the failed network 2210 */ 2211 private void handleConnectionFailure(NetworkInfo info) { 2212 mNetTrackers[info.getType()].setTeardownRequested(false); 2213 2214 String reason = info.getReason(); 2215 String extraInfo = info.getExtraInfo(); 2216 2217 String reasonText; 2218 if (reason == null) { 2219 reasonText = "."; 2220 } else { 2221 reasonText = " (" + reason + ")."; 2222 } 2223 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 2224 2225 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2226 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2227 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2228 if (getActiveNetworkInfo() == null) { 2229 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2230 } 2231 if (reason != null) { 2232 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 2233 } 2234 if (extraInfo != null) { 2235 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 2236 } 2237 if (info.isFailover()) { 2238 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2239 info.setFailover(false); 2240 } 2241 2242 if (mNetConfigs[info.getType()].isDefault()) { 2243 tryFailover(info.getType()); 2244 if (mActiveDefaultNetwork != -1) { 2245 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2246 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2247 } else { 2248 mDefaultInetConditionPublished = 0; 2249 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2250 } 2251 } 2252 2253 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2254 2255 final Intent immediateIntent = new Intent(intent); 2256 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2257 sendStickyBroadcast(immediateIntent); 2258 sendStickyBroadcast(intent); 2259 /* 2260 * If the failover network is already connected, then immediately send 2261 * out a followup broadcast indicating successful failover 2262 */ 2263 if (mActiveDefaultNetwork != -1) { 2264 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 2265 } 2266 } 2267 2268 private void sendStickyBroadcast(Intent intent) { 2269 synchronized(this) { 2270 if (!mSystemReady) { 2271 mInitialBroadcast = new Intent(intent); 2272 } 2273 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2274 if (VDBG) { 2275 log("sendStickyBroadcast: action=" + intent.getAction()); 2276 } 2277 2278 final long ident = Binder.clearCallingIdentity(); 2279 try { 2280 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2281 } finally { 2282 Binder.restoreCallingIdentity(ident); 2283 } 2284 } 2285 } 2286 2287 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2288 if (delayMs <= 0) { 2289 sendStickyBroadcast(intent); 2290 } else { 2291 if (VDBG) { 2292 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2293 + intent.getAction()); 2294 } 2295 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2296 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2297 } 2298 } 2299 2300 void systemReady() { 2301 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2302 loadGlobalProxy(); 2303 2304 synchronized(this) { 2305 mSystemReady = true; 2306 if (mInitialBroadcast != null) { 2307 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2308 mInitialBroadcast = null; 2309 } 2310 } 2311 // load the global proxy at startup 2312 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2313 2314 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2315 // for user to unlock device. 2316 if (!updateLockdownVpn()) { 2317 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2318 mContext.registerReceiver(mUserPresentReceiver, filter); 2319 } 2320 } 2321 2322 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2323 @Override 2324 public void onReceive(Context context, Intent intent) { 2325 // Try creating lockdown tracker, since user present usually means 2326 // unlocked keystore. 2327 if (updateLockdownVpn()) { 2328 mContext.unregisterReceiver(this); 2329 } 2330 } 2331 }; 2332 2333 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2334 if (((type != mNetworkPreference) 2335 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2336 || (mNetworkPreference == mActiveDefaultNetwork)) { 2337 return false; 2338 } 2339 return true; 2340 } 2341 2342 private void handleConnect(NetworkInfo info) { 2343 final int newNetType = info.getType(); 2344 2345 // snapshot isFailover, because sendConnectedBroadcast() resets it 2346 boolean isFailover = info.isFailover(); 2347 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2348 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2349 2350 if (VDBG) { 2351 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2352 + " isFailover" + isFailover); 2353 } 2354 2355 // if this is a default net and other default is running 2356 // kill the one not preferred 2357 if (mNetConfigs[newNetType].isDefault()) { 2358 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2359 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2360 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2361 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2362 // tear down the other 2363 NetworkStateTracker otherNet = 2364 mNetTrackers[mActiveDefaultNetwork]; 2365 if (DBG) { 2366 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2367 " teardown"); 2368 } 2369 if (!teardown(otherNet)) { 2370 loge("Network declined teardown request"); 2371 teardown(thisNet); 2372 return; 2373 } 2374 } else { 2375 //TODO - remove 2376 loge("network teardown skipped due to net.teardownPolicy setting"); 2377 } 2378 } else { 2379 // don't accept this one 2380 if (VDBG) { 2381 log("Not broadcasting CONNECT_ACTION " + 2382 "to torn down network " + info.getTypeName()); 2383 } 2384 teardown(thisNet); 2385 return; 2386 } 2387 } 2388 int thisNetId = nextNetId(); 2389 thisNet.setNetId(thisNetId); 2390 try { 2391 mNetd.createNetwork(thisNetId, thisIface); 2392 } catch (Exception e) { 2393 loge("Exception creating network :" + e); 2394 teardown(thisNet); 2395 return; 2396 } 2397 setupDataActivityTracking(newNetType); 2398 synchronized (ConnectivityService.this) { 2399 // have a new default network, release the transition wakelock in a second 2400 // if it's held. The second pause is to allow apps to reconnect over the 2401 // new network 2402 if (mNetTransitionWakeLock.isHeld()) { 2403 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2404 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2405 mNetTransitionWakeLockSerialNumber, 0), 2406 1000); 2407 } 2408 } 2409 mActiveDefaultNetwork = newNetType; 2410 // this will cause us to come up initially as unconnected and switching 2411 // to connected after our normal pause unless somebody reports us as reall 2412 // disconnected 2413 mDefaultInetConditionPublished = 0; 2414 mDefaultConnectionSequence++; 2415 mInetConditionChangeInFlight = false; 2416 // Don't do this - if we never sign in stay, grey 2417 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2418 updateNetworkSettings(thisNet); 2419 } else { 2420 int thisNetId = nextNetId(); 2421 thisNet.setNetId(thisNetId); 2422 try { 2423 mNetd.createNetwork(thisNetId, thisIface); 2424 } catch (Exception e) { 2425 loge("Exception creating network :" + e); 2426 teardown(thisNet); 2427 return; 2428 } 2429 } 2430 thisNet.setTeardownRequested(false); 2431 updateMtuSizeSettings(thisNet); 2432 handleConnectivityChange(newNetType, false); 2433 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2434 2435 // notify battery stats service about this network 2436 if (thisIface != null) { 2437 try { 2438 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2439 } catch (RemoteException e) { 2440 // ignored; service lives in system_server 2441 } 2442 } 2443 } 2444 2445 /** @hide */ 2446 @Override 2447 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2448 enforceConnectivityInternalPermission(); 2449 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2450 mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2451 } 2452 2453 /** 2454 * Setup data activity tracking for the given network interface. 2455 * 2456 * Every {@code setupDataActivityTracking} should be paired with a 2457 * {@link #removeDataActivityTracking} for cleanup. 2458 */ 2459 private void setupDataActivityTracking(int type) { 2460 final NetworkStateTracker thisNet = mNetTrackers[type]; 2461 final String iface = thisNet.getLinkProperties().getInterfaceName(); 2462 2463 final int timeout; 2464 2465 if (ConnectivityManager.isNetworkTypeMobile(type)) { 2466 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2467 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2468 5); 2469 // Canonicalize mobile network type 2470 type = ConnectivityManager.TYPE_MOBILE; 2471 } else if (ConnectivityManager.TYPE_WIFI == type) { 2472 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2473 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2474 0); 2475 } else { 2476 // do not track any other networks 2477 timeout = 0; 2478 } 2479 2480 if (timeout > 0 && iface != null) { 2481 try { 2482 mNetd.addIdleTimer(iface, timeout, type); 2483 } catch (Exception e) { 2484 // You shall not crash! 2485 loge("Exception in setupDataActivityTracking " + e); 2486 } 2487 } 2488 } 2489 2490 /** 2491 * Remove data activity tracking when network disconnects. 2492 */ 2493 private void removeDataActivityTracking(int type) { 2494 final NetworkStateTracker net = mNetTrackers[type]; 2495 final String iface = net.getLinkProperties().getInterfaceName(); 2496 2497 if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) || 2498 ConnectivityManager.TYPE_WIFI == type)) { 2499 try { 2500 // the call fails silently if no idletimer setup for this interface 2501 mNetd.removeIdleTimer(iface); 2502 } catch (Exception e) { 2503 loge("Exception in removeDataActivityTracking " + e); 2504 } 2505 } 2506 } 2507 2508 /** 2509 * After a change in the connectivity state of a network. We're mainly 2510 * concerned with making sure that the list of DNS servers is set up 2511 * according to which networks are connected, and ensuring that the 2512 * right routing table entries exist. 2513 */ 2514 private void handleConnectivityChange(int netType, boolean doReset) { 2515 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2516 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2517 if (VDBG) { 2518 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2519 + " resetMask=" + resetMask); 2520 } 2521 2522 /* 2523 * If a non-default network is enabled, add the host routes that 2524 * will allow it's DNS servers to be accessed. 2525 */ 2526 handleDnsConfigurationChange(netType); 2527 2528 LinkProperties curLp = mCurrentLinkProperties[netType]; 2529 LinkProperties newLp = null; 2530 2531 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2532 newLp = mNetTrackers[netType].getLinkProperties(); 2533 if (VDBG) { 2534 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2535 " doReset=" + doReset + " resetMask=" + resetMask + 2536 "\n curLp=" + curLp + 2537 "\n newLp=" + newLp); 2538 } 2539 2540 if (curLp != null) { 2541 if (curLp.isIdenticalInterfaceName(newLp)) { 2542 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2543 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2544 for (LinkAddress linkAddr : car.removed) { 2545 if (linkAddr.getAddress() instanceof Inet4Address) { 2546 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2547 } 2548 if (linkAddr.getAddress() instanceof Inet6Address) { 2549 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2550 } 2551 } 2552 if (DBG) { 2553 log("handleConnectivityChange: addresses changed" + 2554 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2555 "\n car=" + car); 2556 } 2557 } else { 2558 if (VDBG) { 2559 log("handleConnectivityChange: addresses are the same reset per" + 2560 " doReset linkProperty[" + netType + "]:" + 2561 " resetMask=" + resetMask); 2562 } 2563 } 2564 } else { 2565 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2566 if (DBG) { 2567 log("handleConnectivityChange: interface not not equivalent reset both" + 2568 " linkProperty[" + netType + "]:" + 2569 " resetMask=" + resetMask); 2570 } 2571 } 2572 } 2573 if (mNetConfigs[netType].isDefault()) { 2574 handleApplyDefaultProxy(newLp.getHttpProxy()); 2575 } 2576 } else { 2577 if (VDBG) { 2578 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2579 " doReset=" + doReset + " resetMask=" + resetMask + 2580 "\n curLp=" + curLp + 2581 "\n newLp= null"); 2582 } 2583 } 2584 mCurrentLinkProperties[netType] = newLp; 2585 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt); 2586 2587 if (resetMask != 0 || resetDns) { 2588 if (VDBG) log("handleConnectivityChange: resetting"); 2589 if (curLp != null) { 2590 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2591 for (String iface : curLp.getAllInterfaceNames()) { 2592 if (TextUtils.isEmpty(iface) == false) { 2593 if (resetMask != 0) { 2594 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2595 NetworkUtils.resetConnections(iface, resetMask); 2596 2597 // Tell VPN the interface is down. It is a temporary 2598 // but effective fix to make VPN aware of the change. 2599 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2600 synchronized(mVpns) { 2601 for (int i = 0; i < mVpns.size(); i++) { 2602 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2603 } 2604 } 2605 } 2606 } 2607 if (resetDns) { 2608 flushVmDnsCache(); 2609 if (VDBG) log("resetting DNS cache for " + iface); 2610 try { 2611 mNetd.flushInterfaceDnsCache(iface); 2612 } catch (Exception e) { 2613 // never crash - catch them all 2614 if (DBG) loge("Exception resetting dns cache: " + e); 2615 } 2616 } 2617 } else { 2618 loge("Can't reset connection for type "+netType); 2619 } 2620 } 2621 } 2622 } 2623 2624 // Update 464xlat state. 2625 NetworkStateTracker tracker = mNetTrackers[netType]; 2626 if (mClat.requiresClat(netType, tracker)) { 2627 2628 // If the connection was previously using clat, but is not using it now, stop the clat 2629 // daemon. Normally, this happens automatically when the connection disconnects, but if 2630 // the disconnect is not reported, or if the connection's LinkProperties changed for 2631 // some other reason (e.g., handoff changes the IP addresses on the link), it would 2632 // still be running. If it's not running, then stopping it is a no-op. 2633 if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) { 2634 mClat.stopClat(); 2635 } 2636 // If the link requires clat to be running, then start the daemon now. 2637 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2638 mClat.startClat(tracker); 2639 } else { 2640 mClat.stopClat(); 2641 } 2642 } 2643 2644 // TODO: Temporary notifying upstread change to Tethering. 2645 // @see bug/4455071 2646 /** Notify TetheringService if interface name has been changed. */ 2647 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2648 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2649 if (isTetheringSupported()) { 2650 mTethering.handleTetherIfaceChange(); 2651 } 2652 } 2653 } 2654 2655 /** 2656 * Add and remove routes using the old properties (null if not previously connected), 2657 * new properties (null if becoming disconnected). May even be double null, which 2658 * is a noop. 2659 * Uses isLinkDefault to determine if default routes should be set or conversely if 2660 * host routes should be set to the dns servers 2661 * returns a boolean indicating the routes changed 2662 */ 2663 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2664 boolean isLinkDefault, boolean exempt) { 2665 Collection<RouteInfo> routesToAdd = null; 2666 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2667 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2668 if (curLp != null) { 2669 // check for the delta between the current set and the new 2670 routeDiff = curLp.compareAllRoutes(newLp); 2671 dnsDiff = curLp.compareDnses(newLp); 2672 } else if (newLp != null) { 2673 routeDiff.added = newLp.getAllRoutes(); 2674 dnsDiff.added = newLp.getDnses(); 2675 } 2676 2677 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2678 2679 for (RouteInfo r : routeDiff.removed) { 2680 if (isLinkDefault || ! r.isDefaultRoute()) { 2681 if (VDBG) log("updateRoutes: default remove route r=" + r); 2682 removeRoute(curLp, r, TO_DEFAULT_TABLE); 2683 } 2684 if (isLinkDefault == false) { 2685 // remove from a secondary route table 2686 removeRoute(curLp, r, TO_SECONDARY_TABLE); 2687 } 2688 } 2689 2690 if (!isLinkDefault) { 2691 // handle DNS routes 2692 if (routesChanged) { 2693 // routes changed - remove all old dns entries and add new 2694 if (curLp != null) { 2695 for (InetAddress oldDns : curLp.getDnses()) { 2696 removeRouteToAddress(curLp, oldDns); 2697 } 2698 } 2699 if (newLp != null) { 2700 for (InetAddress newDns : newLp.getDnses()) { 2701 addRouteToAddress(newLp, newDns, exempt); 2702 } 2703 } 2704 } else { 2705 // no change in routes, check for change in dns themselves 2706 for (InetAddress oldDns : dnsDiff.removed) { 2707 removeRouteToAddress(curLp, oldDns); 2708 } 2709 for (InetAddress newDns : dnsDiff.added) { 2710 addRouteToAddress(newLp, newDns, exempt); 2711 } 2712 } 2713 } 2714 2715 for (RouteInfo r : routeDiff.added) { 2716 if (isLinkDefault || ! r.isDefaultRoute()) { 2717 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt); 2718 } else { 2719 // add to a secondary route table 2720 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT); 2721 2722 // many radios add a default route even when we don't want one. 2723 // remove the default route unless somebody else has asked for it 2724 String ifaceName = newLp.getInterfaceName(); 2725 synchronized (mRoutesLock) { 2726 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2727 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2728 try { 2729 mNetd.removeRoute(ifaceName, r); 2730 } catch (Exception e) { 2731 // never crash - catch them all 2732 if (DBG) loge("Exception trying to remove a route: " + e); 2733 } 2734 } 2735 } 2736 } 2737 } 2738 2739 return routesChanged; 2740 } 2741 2742 /** 2743 * Reads the network specific MTU size from reources. 2744 * and set it on it's iface. 2745 */ 2746 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2747 final String iface = nt.getLinkProperties().getInterfaceName(); 2748 final int mtu = nt.getLinkProperties().getMtu(); 2749 2750 if (mtu < 68 || mtu > 10000) { 2751 loge("Unexpected mtu value: " + mtu + ", " + nt); 2752 return; 2753 } 2754 2755 try { 2756 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2757 mNetd.setMtu(iface, mtu); 2758 } catch (Exception e) { 2759 Slog.e(TAG, "exception in setMtu()" + e); 2760 } 2761 } 2762 2763 /** 2764 * Reads the network specific TCP buffer sizes from SystemProperties 2765 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2766 * wide use 2767 */ 2768 private void updateNetworkSettings(NetworkStateTracker nt) { 2769 String key = nt.getTcpBufferSizesPropName(); 2770 String bufferSizes = key == null ? null : SystemProperties.get(key); 2771 2772 if (TextUtils.isEmpty(bufferSizes)) { 2773 if (VDBG) log(key + " not found in system properties. Using defaults"); 2774 2775 // Setting to default values so we won't be stuck to previous values 2776 key = "net.tcp.buffersize.default"; 2777 bufferSizes = SystemProperties.get(key); 2778 } 2779 2780 // Set values in kernel 2781 if (bufferSizes.length() != 0) { 2782 if (VDBG) { 2783 log("Setting TCP values: [" + bufferSizes 2784 + "] which comes from [" + key + "]"); 2785 } 2786 setBufferSize(bufferSizes); 2787 } 2788 2789 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2790 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2791 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2792 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2793 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2794 if (rwndValue != 0) { 2795 SystemProperties.set(sysctlKey, rwndValue.toString()); 2796 } 2797 } 2798 2799 /** 2800 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2801 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2802 * 2803 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2804 * writeMin, writeInitial, writeMax" 2805 */ 2806 private void setBufferSize(String bufferSizes) { 2807 try { 2808 String[] values = bufferSizes.split(","); 2809 2810 if (values.length == 6) { 2811 final String prefix = "/sys/kernel/ipv4/tcp_"; 2812 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2813 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2814 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2815 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2816 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2817 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2818 } else { 2819 loge("Invalid buffersize string: " + bufferSizes); 2820 } 2821 } catch (IOException e) { 2822 loge("Can't set tcp buffer sizes:" + e); 2823 } 2824 } 2825 2826 /** 2827 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2828 * on the highest priority active net which this process requested. 2829 * If there aren't any, clear it out 2830 */ 2831 private void reassessPidDns(int pid, boolean doBump) 2832 { 2833 if (VDBG) log("reassessPidDns for pid " + pid); 2834 Integer myPid = new Integer(pid); 2835 for(int i : mPriorityList) { 2836 if (mNetConfigs[i].isDefault()) { 2837 continue; 2838 } 2839 NetworkStateTracker nt = mNetTrackers[i]; 2840 if (nt.getNetworkInfo().isConnected() && 2841 !nt.isTeardownRequested()) { 2842 LinkProperties p = nt.getLinkProperties(); 2843 if (p == null) continue; 2844 if (mNetRequestersPids[i].contains(myPid)) { 2845 try { 2846 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2847 } catch (Exception e) { 2848 Slog.e(TAG, "exception reasseses pid dns: " + e); 2849 } 2850 return; 2851 } 2852 } 2853 } 2854 // nothing found - delete 2855 try { 2856 mNetd.clearDnsInterfaceForPid(pid); 2857 } catch (Exception e) { 2858 Slog.e(TAG, "exception clear interface from pid: " + e); 2859 } 2860 } 2861 2862 private void flushVmDnsCache() { 2863 /* 2864 * Tell the VMs to toss their DNS caches 2865 */ 2866 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2867 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2868 /* 2869 * Connectivity events can happen before boot has completed ... 2870 */ 2871 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2872 final long ident = Binder.clearCallingIdentity(); 2873 try { 2874 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2875 } finally { 2876 Binder.restoreCallingIdentity(ident); 2877 } 2878 } 2879 2880 // Caller must grab mDnsLock. 2881 private void updateDnsLocked(String network, String iface, 2882 Collection<InetAddress> dnses, String domains, boolean defaultDns) { 2883 int last = 0; 2884 if (dnses.size() == 0 && mDefaultDns != null) { 2885 dnses = new ArrayList(); 2886 dnses.add(mDefaultDns); 2887 if (DBG) { 2888 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2889 } 2890 } 2891 2892 try { 2893 mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains); 2894 if (defaultDns) { 2895 mNetd.setDefaultInterfaceForDns(iface); 2896 } 2897 2898 for (InetAddress dns : dnses) { 2899 ++last; 2900 String key = "net.dns" + last; 2901 String value = dns.getHostAddress(); 2902 SystemProperties.set(key, value); 2903 } 2904 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2905 String key = "net.dns" + i; 2906 SystemProperties.set(key, ""); 2907 } 2908 mNumDnsEntries = last; 2909 } catch (Exception e) { 2910 loge("exception setting default dns interface: " + e); 2911 } 2912 } 2913 2914 private void handleDnsConfigurationChange(int netType) { 2915 // add default net's dns entries 2916 NetworkStateTracker nt = mNetTrackers[netType]; 2917 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2918 LinkProperties p = nt.getLinkProperties(); 2919 if (p == null) return; 2920 Collection<InetAddress> dnses = p.getDnses(); 2921 if (mNetConfigs[netType].isDefault()) { 2922 String network = nt.getNetworkInfo().getTypeName(); 2923 synchronized (mDnsLock) { 2924 updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true); 2925 } 2926 } else { 2927 try { 2928 mNetd.setDnsServersForInterface(p.getInterfaceName(), 2929 NetworkUtils.makeStrings(dnses), p.getDomains()); 2930 } catch (Exception e) { 2931 if (DBG) loge("exception setting dns servers: " + e); 2932 } 2933 // set per-pid dns for attached secondary nets 2934 List<Integer> pids = mNetRequestersPids[netType]; 2935 for (Integer pid : pids) { 2936 try { 2937 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2938 } catch (Exception e) { 2939 Slog.e(TAG, "exception setting interface for pid: " + e); 2940 } 2941 } 2942 } 2943 flushVmDnsCache(); 2944 } 2945 } 2946 2947 private int getRestoreDefaultNetworkDelay(int networkType) { 2948 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2949 NETWORK_RESTORE_DELAY_PROP_NAME); 2950 if(restoreDefaultNetworkDelayStr != null && 2951 restoreDefaultNetworkDelayStr.length() != 0) { 2952 try { 2953 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2954 } catch (NumberFormatException e) { 2955 } 2956 } 2957 // if the system property isn't set, use the value for the apn type 2958 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2959 2960 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2961 (mNetConfigs[networkType] != null)) { 2962 ret = mNetConfigs[networkType].restoreTime; 2963 } 2964 return ret; 2965 } 2966 2967 @Override 2968 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2969 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2970 if (mContext.checkCallingOrSelfPermission( 2971 android.Manifest.permission.DUMP) 2972 != PackageManager.PERMISSION_GRANTED) { 2973 pw.println("Permission Denial: can't dump ConnectivityService " + 2974 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2975 Binder.getCallingUid()); 2976 return; 2977 } 2978 2979 // TODO: add locking to get atomic snapshot 2980 pw.println(); 2981 for (int i = 0; i < mNetTrackers.length; i++) { 2982 final NetworkStateTracker nst = mNetTrackers[i]; 2983 if (nst != null) { 2984 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 2985 pw.increaseIndent(); 2986 if (nst.getNetworkInfo().isConnected()) { 2987 pw.println("Active network: " + nst.getNetworkInfo(). 2988 getTypeName()); 2989 } 2990 pw.println(nst.getNetworkInfo()); 2991 pw.println(nst.getLinkProperties()); 2992 pw.println(nst); 2993 pw.println(); 2994 pw.decreaseIndent(); 2995 } 2996 } 2997 2998 pw.print("Active default network: "); pw.println(getNetworkTypeName(mActiveDefaultNetwork)); 2999 pw.println(); 3000 3001 pw.println("Network Requester Pids:"); 3002 pw.increaseIndent(); 3003 for (int net : mPriorityList) { 3004 String pidString = net + ": "; 3005 for (Integer pid : mNetRequestersPids[net]) { 3006 pidString = pidString + pid.toString() + ", "; 3007 } 3008 pw.println(pidString); 3009 } 3010 pw.println(); 3011 pw.decreaseIndent(); 3012 3013 pw.println("FeatureUsers:"); 3014 pw.increaseIndent(); 3015 for (Object requester : mFeatureUsers) { 3016 pw.println(requester.toString()); 3017 } 3018 pw.println(); 3019 pw.decreaseIndent(); 3020 3021 synchronized (this) { 3022 pw.println("NetworkTranstionWakeLock is currently " + 3023 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3024 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3025 } 3026 pw.println(); 3027 3028 mTethering.dump(fd, pw, args); 3029 3030 if (mInetLog != null) { 3031 pw.println(); 3032 pw.println("Inet condition reports:"); 3033 pw.increaseIndent(); 3034 for(int i = 0; i < mInetLog.size(); i++) { 3035 pw.println(mInetLog.get(i)); 3036 } 3037 pw.decreaseIndent(); 3038 } 3039 } 3040 3041 // must be stateless - things change under us. 3042 private class NetworkStateTrackerHandler extends Handler { 3043 public NetworkStateTrackerHandler(Looper looper) { 3044 super(looper); 3045 } 3046 3047 @Override 3048 public void handleMessage(Message msg) { 3049 NetworkInfo info; 3050 switch (msg.what) { 3051 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3052 info = (NetworkInfo) msg.obj; 3053 NetworkInfo.State state = info.getState(); 3054 3055 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3056 (state == NetworkInfo.State.DISCONNECTED) || 3057 (state == NetworkInfo.State.SUSPENDED)) { 3058 log("ConnectivityChange for " + 3059 info.getTypeName() + ": " + 3060 state + "/" + info.getDetailedState()); 3061 } 3062 3063 // Since mobile has the notion of a network/apn that can be used for 3064 // provisioning we need to check every time we're connected as 3065 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3066 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3067 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3068 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3069 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3070 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3071 Settings.Global.DEVICE_PROVISIONED, 0)) 3072 && (((state == NetworkInfo.State.CONNECTED) 3073 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3074 || info.isConnectedToProvisioningNetwork())) { 3075 log("ConnectivityChange checkMobileProvisioning for" 3076 + " TYPE_MOBILE or ProvisioningNetwork"); 3077 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3078 } 3079 3080 EventLogTags.writeConnectivityStateChanged( 3081 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3082 3083 if (info.getDetailedState() == 3084 NetworkInfo.DetailedState.FAILED) { 3085 handleConnectionFailure(info); 3086 } else if (info.isConnectedToProvisioningNetwork()) { 3087 /** 3088 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3089 * for now its an in between network, its a network that 3090 * is actually a default network but we don't want it to be 3091 * announced as such to keep background applications from 3092 * trying to use it. It turns out that some still try so we 3093 * take the additional step of clearing any default routes 3094 * to the link that may have incorrectly setup by the lower 3095 * levels. 3096 */ 3097 LinkProperties lp = getLinkProperties(info.getType()); 3098 if (DBG) { 3099 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3100 } 3101 3102 // Clear any default routes setup by the radio so 3103 // any activity by applications trying to use this 3104 // connection will fail until the provisioning network 3105 // is enabled. 3106 for (RouteInfo r : lp.getRoutes()) { 3107 removeRoute(lp, r, TO_DEFAULT_TABLE); 3108 } 3109 } else if (state == NetworkInfo.State.DISCONNECTED) { 3110 handleDisconnect(info); 3111 } else if (state == NetworkInfo.State.SUSPENDED) { 3112 // TODO: need to think this over. 3113 // the logic here is, handle SUSPENDED the same as 3114 // DISCONNECTED. The only difference being we are 3115 // broadcasting an intent with NetworkInfo that's 3116 // suspended. This allows the applications an 3117 // opportunity to handle DISCONNECTED and SUSPENDED 3118 // differently, or not. 3119 handleDisconnect(info); 3120 } else if (state == NetworkInfo.State.CONNECTED) { 3121 handleConnect(info); 3122 } 3123 if (mLockdownTracker != null) { 3124 mLockdownTracker.onNetworkInfoChanged(info); 3125 } 3126 break; 3127 } 3128 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3129 info = (NetworkInfo) msg.obj; 3130 // TODO: Temporary allowing network configuration 3131 // change not resetting sockets. 3132 // @see bug/4455071 3133 handleConnectivityChange(info.getType(), false); 3134 break; 3135 } 3136 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3137 info = (NetworkInfo) msg.obj; 3138 int type = info.getType(); 3139 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3140 break; 3141 } 3142 } 3143 } 3144 } 3145 3146 private class InternalHandler extends Handler { 3147 public InternalHandler(Looper looper) { 3148 super(looper); 3149 } 3150 3151 @Override 3152 public void handleMessage(Message msg) { 3153 NetworkInfo info; 3154 switch (msg.what) { 3155 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3156 String causedBy = null; 3157 synchronized (ConnectivityService.this) { 3158 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3159 mNetTransitionWakeLock.isHeld()) { 3160 mNetTransitionWakeLock.release(); 3161 causedBy = mNetTransitionWakeLockCausedBy; 3162 } 3163 } 3164 if (causedBy != null) { 3165 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3166 } 3167 break; 3168 } 3169 case EVENT_RESTORE_DEFAULT_NETWORK: { 3170 FeatureUser u = (FeatureUser)msg.obj; 3171 u.expire(); 3172 break; 3173 } 3174 case EVENT_INET_CONDITION_CHANGE: { 3175 int netType = msg.arg1; 3176 int condition = msg.arg2; 3177 handleInetConditionChange(netType, condition); 3178 break; 3179 } 3180 case EVENT_INET_CONDITION_HOLD_END: { 3181 int netType = msg.arg1; 3182 int sequence = msg.arg2; 3183 handleInetConditionHoldEnd(netType, sequence); 3184 break; 3185 } 3186 case EVENT_SET_NETWORK_PREFERENCE: { 3187 int preference = msg.arg1; 3188 handleSetNetworkPreference(preference); 3189 break; 3190 } 3191 case EVENT_SET_MOBILE_DATA: { 3192 boolean enabled = (msg.arg1 == ENABLED); 3193 handleSetMobileData(enabled); 3194 break; 3195 } 3196 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3197 handleDeprecatedGlobalHttpProxy(); 3198 break; 3199 } 3200 case EVENT_SET_DEPENDENCY_MET: { 3201 boolean met = (msg.arg1 == ENABLED); 3202 handleSetDependencyMet(msg.arg2, met); 3203 break; 3204 } 3205 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3206 Intent intent = (Intent)msg.obj; 3207 sendStickyBroadcast(intent); 3208 break; 3209 } 3210 case EVENT_SET_POLICY_DATA_ENABLE: { 3211 final int networkType = msg.arg1; 3212 final boolean enabled = msg.arg2 == ENABLED; 3213 handleSetPolicyDataEnable(networkType, enabled); 3214 break; 3215 } 3216 case EVENT_VPN_STATE_CHANGED: { 3217 if (mLockdownTracker != null) { 3218 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3219 } 3220 break; 3221 } 3222 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3223 int tag = mEnableFailFastMobileDataTag.get(); 3224 if (msg.arg1 == tag) { 3225 MobileDataStateTracker mobileDst = 3226 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3227 if (mobileDst != null) { 3228 mobileDst.setEnableFailFastMobileData(msg.arg2); 3229 } 3230 } else { 3231 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3232 + " != tag:" + tag); 3233 } 3234 break; 3235 } 3236 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3237 handleNetworkSamplingTimeout(); 3238 break; 3239 } 3240 case EVENT_PROXY_HAS_CHANGED: { 3241 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3242 break; 3243 } 3244 } 3245 } 3246 } 3247 3248 // javadoc from interface 3249 public int tether(String iface) { 3250 enforceTetherChangePermission(); 3251 3252 if (isTetheringSupported()) { 3253 return mTethering.tether(iface); 3254 } else { 3255 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3256 } 3257 } 3258 3259 // javadoc from interface 3260 public int untether(String iface) { 3261 enforceTetherChangePermission(); 3262 3263 if (isTetheringSupported()) { 3264 return mTethering.untether(iface); 3265 } else { 3266 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3267 } 3268 } 3269 3270 // javadoc from interface 3271 public int getLastTetherError(String iface) { 3272 enforceTetherAccessPermission(); 3273 3274 if (isTetheringSupported()) { 3275 return mTethering.getLastTetherError(iface); 3276 } else { 3277 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3278 } 3279 } 3280 3281 // TODO - proper iface API for selection by property, inspection, etc 3282 public String[] getTetherableUsbRegexs() { 3283 enforceTetherAccessPermission(); 3284 if (isTetheringSupported()) { 3285 return mTethering.getTetherableUsbRegexs(); 3286 } else { 3287 return new String[0]; 3288 } 3289 } 3290 3291 public String[] getTetherableWifiRegexs() { 3292 enforceTetherAccessPermission(); 3293 if (isTetheringSupported()) { 3294 return mTethering.getTetherableWifiRegexs(); 3295 } else { 3296 return new String[0]; 3297 } 3298 } 3299 3300 public String[] getTetherableBluetoothRegexs() { 3301 enforceTetherAccessPermission(); 3302 if (isTetheringSupported()) { 3303 return mTethering.getTetherableBluetoothRegexs(); 3304 } else { 3305 return new String[0]; 3306 } 3307 } 3308 3309 public int setUsbTethering(boolean enable) { 3310 enforceTetherChangePermission(); 3311 if (isTetheringSupported()) { 3312 return mTethering.setUsbTethering(enable); 3313 } else { 3314 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3315 } 3316 } 3317 3318 // TODO - move iface listing, queries, etc to new module 3319 // javadoc from interface 3320 public String[] getTetherableIfaces() { 3321 enforceTetherAccessPermission(); 3322 return mTethering.getTetherableIfaces(); 3323 } 3324 3325 public String[] getTetheredIfaces() { 3326 enforceTetherAccessPermission(); 3327 return mTethering.getTetheredIfaces(); 3328 } 3329 3330 public String[] getTetheringErroredIfaces() { 3331 enforceTetherAccessPermission(); 3332 return mTethering.getErroredIfaces(); 3333 } 3334 3335 // if ro.tether.denied = true we default to no tethering 3336 // gservices could set the secure setting to 1 though to enable it on a build where it 3337 // had previously been turned off. 3338 public boolean isTetheringSupported() { 3339 enforceTetherAccessPermission(); 3340 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3341 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3342 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3343 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3344 mTethering.getTetherableWifiRegexs().length != 0 || 3345 mTethering.getTetherableBluetoothRegexs().length != 0) && 3346 mTethering.getUpstreamIfaceTypes().length != 0); 3347 } 3348 3349 // An API NetworkStateTrackers can call when they lose their network. 3350 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3351 // whichever happens first. The timer is started by the first caller and not 3352 // restarted by subsequent callers. 3353 public void requestNetworkTransitionWakelock(String forWhom) { 3354 enforceConnectivityInternalPermission(); 3355 synchronized (this) { 3356 if (mNetTransitionWakeLock.isHeld()) return; 3357 mNetTransitionWakeLockSerialNumber++; 3358 mNetTransitionWakeLock.acquire(); 3359 mNetTransitionWakeLockCausedBy = forWhom; 3360 } 3361 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3362 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3363 mNetTransitionWakeLockSerialNumber, 0), 3364 mNetTransitionWakeLockTimeout); 3365 return; 3366 } 3367 3368 // 100 percent is full good, 0 is full bad. 3369 public void reportInetCondition(int networkType, int percentage) { 3370 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3371 mContext.enforceCallingOrSelfPermission( 3372 android.Manifest.permission.STATUS_BAR, 3373 "ConnectivityService"); 3374 3375 if (DBG) { 3376 int pid = getCallingPid(); 3377 int uid = getCallingUid(); 3378 String s = pid + "(" + uid + ") reports inet is " + 3379 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3380 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3381 mInetLog.add(s); 3382 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3383 mInetLog.remove(0); 3384 } 3385 } 3386 mHandler.sendMessage(mHandler.obtainMessage( 3387 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3388 } 3389 3390 private void handleInetConditionChange(int netType, int condition) { 3391 if (mActiveDefaultNetwork == -1) { 3392 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3393 return; 3394 } 3395 if (mActiveDefaultNetwork != netType) { 3396 if (DBG) log("handleInetConditionChange: net=" + netType + 3397 " != default=" + mActiveDefaultNetwork + " - ignore"); 3398 return; 3399 } 3400 if (VDBG) { 3401 log("handleInetConditionChange: net=" + 3402 netType + ", condition=" + condition + 3403 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3404 } 3405 mDefaultInetCondition = condition; 3406 int delay; 3407 if (mInetConditionChangeInFlight == false) { 3408 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3409 // setup a new hold to debounce this 3410 if (mDefaultInetCondition > 50) { 3411 delay = Settings.Global.getInt(mContext.getContentResolver(), 3412 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3413 } else { 3414 delay = Settings.Global.getInt(mContext.getContentResolver(), 3415 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3416 } 3417 mInetConditionChangeInFlight = true; 3418 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3419 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3420 } else { 3421 // we've set the new condition, when this hold ends that will get picked up 3422 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3423 } 3424 } 3425 3426 private void handleInetConditionHoldEnd(int netType, int sequence) { 3427 if (DBG) { 3428 log("handleInetConditionHoldEnd: net=" + netType + 3429 ", condition=" + mDefaultInetCondition + 3430 ", published condition=" + mDefaultInetConditionPublished); 3431 } 3432 mInetConditionChangeInFlight = false; 3433 3434 if (mActiveDefaultNetwork == -1) { 3435 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3436 return; 3437 } 3438 if (mDefaultConnectionSequence != sequence) { 3439 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3440 return; 3441 } 3442 // TODO: Figure out why this optimization sometimes causes a 3443 // change in mDefaultInetCondition to be missed and the 3444 // UI to not be updated. 3445 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3446 // if (DBG) log("no change in condition - aborting"); 3447 // return; 3448 //} 3449 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3450 if (networkInfo.isConnected() == false) { 3451 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3452 return; 3453 } 3454 mDefaultInetConditionPublished = mDefaultInetCondition; 3455 sendInetConditionBroadcast(networkInfo); 3456 return; 3457 } 3458 3459 public ProxyInfo getProxy() { 3460 // this information is already available as a world read/writable jvm property 3461 // so this API change wouldn't have a benifit. It also breaks the passing 3462 // of proxy info to all the JVMs. 3463 // enforceAccessPermission(); 3464 synchronized (mProxyLock) { 3465 ProxyInfo ret = mGlobalProxy; 3466 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3467 return ret; 3468 } 3469 } 3470 3471 public void setGlobalProxy(ProxyInfo proxyProperties) { 3472 enforceConnectivityInternalPermission(); 3473 3474 synchronized (mProxyLock) { 3475 if (proxyProperties == mGlobalProxy) return; 3476 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3477 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3478 3479 String host = ""; 3480 int port = 0; 3481 String exclList = ""; 3482 String pacFileUrl = ""; 3483 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3484 (proxyProperties.getPacFileUrl() != null))) { 3485 if (!proxyProperties.isValid()) { 3486 if (DBG) 3487 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3488 return; 3489 } 3490 mGlobalProxy = new ProxyInfo(proxyProperties); 3491 host = mGlobalProxy.getHost(); 3492 port = mGlobalProxy.getPort(); 3493 exclList = mGlobalProxy.getExclusionListAsString(); 3494 if (proxyProperties.getPacFileUrl() != null) { 3495 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3496 } 3497 } else { 3498 mGlobalProxy = null; 3499 } 3500 ContentResolver res = mContext.getContentResolver(); 3501 final long token = Binder.clearCallingIdentity(); 3502 try { 3503 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3504 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3505 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3506 exclList); 3507 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3508 } finally { 3509 Binder.restoreCallingIdentity(token); 3510 } 3511 } 3512 3513 if (mGlobalProxy == null) { 3514 proxyProperties = mDefaultProxy; 3515 } 3516 sendProxyBroadcast(proxyProperties); 3517 } 3518 3519 private void loadGlobalProxy() { 3520 ContentResolver res = mContext.getContentResolver(); 3521 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3522 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3523 String exclList = Settings.Global.getString(res, 3524 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3525 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3526 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3527 ProxyInfo proxyProperties; 3528 if (!TextUtils.isEmpty(pacFileUrl)) { 3529 proxyProperties = new ProxyInfo(pacFileUrl); 3530 } else { 3531 proxyProperties = new ProxyInfo(host, port, exclList); 3532 } 3533 if (!proxyProperties.isValid()) { 3534 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3535 return; 3536 } 3537 3538 synchronized (mProxyLock) { 3539 mGlobalProxy = proxyProperties; 3540 } 3541 } 3542 } 3543 3544 public ProxyInfo getGlobalProxy() { 3545 // this information is already available as a world read/writable jvm property 3546 // so this API change wouldn't have a benifit. It also breaks the passing 3547 // of proxy info to all the JVMs. 3548 // enforceAccessPermission(); 3549 synchronized (mProxyLock) { 3550 return mGlobalProxy; 3551 } 3552 } 3553 3554 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3555 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3556 && (proxy.getPacFileUrl() == null)) { 3557 proxy = null; 3558 } 3559 synchronized (mProxyLock) { 3560 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3561 if (mDefaultProxy == proxy) return; // catches repeated nulls 3562 if (proxy != null && !proxy.isValid()) { 3563 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3564 return; 3565 } 3566 3567 // This call could be coming from the PacManager, containing the port of the local 3568 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3569 // global (to get the correct local port), and send a broadcast. 3570 // TODO: Switch PacManager to have its own message to send back rather than 3571 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3572 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3573 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3574 mGlobalProxy = proxy; 3575 sendProxyBroadcast(mGlobalProxy); 3576 return; 3577 } 3578 mDefaultProxy = proxy; 3579 3580 if (mGlobalProxy != null) return; 3581 if (!mDefaultProxyDisabled) { 3582 sendProxyBroadcast(proxy); 3583 } 3584 } 3585 } 3586 3587 private void handleDeprecatedGlobalHttpProxy() { 3588 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3589 Settings.Global.HTTP_PROXY); 3590 if (!TextUtils.isEmpty(proxy)) { 3591 String data[] = proxy.split(":"); 3592 if (data.length == 0) { 3593 return; 3594 } 3595 3596 String proxyHost = data[0]; 3597 int proxyPort = 8080; 3598 if (data.length > 1) { 3599 try { 3600 proxyPort = Integer.parseInt(data[1]); 3601 } catch (NumberFormatException e) { 3602 return; 3603 } 3604 } 3605 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3606 setGlobalProxy(p); 3607 } 3608 } 3609 3610 private void sendProxyBroadcast(ProxyInfo proxy) { 3611 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3612 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3613 if (DBG) log("sending Proxy Broadcast for " + proxy); 3614 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3615 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3616 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3617 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3618 final long ident = Binder.clearCallingIdentity(); 3619 try { 3620 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3621 } finally { 3622 Binder.restoreCallingIdentity(ident); 3623 } 3624 } 3625 3626 private static class SettingsObserver extends ContentObserver { 3627 private int mWhat; 3628 private Handler mHandler; 3629 SettingsObserver(Handler handler, int what) { 3630 super(handler); 3631 mHandler = handler; 3632 mWhat = what; 3633 } 3634 3635 void observe(Context context) { 3636 ContentResolver resolver = context.getContentResolver(); 3637 resolver.registerContentObserver(Settings.Global.getUriFor( 3638 Settings.Global.HTTP_PROXY), false, this); 3639 } 3640 3641 @Override 3642 public void onChange(boolean selfChange) { 3643 mHandler.obtainMessage(mWhat).sendToTarget(); 3644 } 3645 } 3646 3647 private static void log(String s) { 3648 Slog.d(TAG, s); 3649 } 3650 3651 private static void loge(String s) { 3652 Slog.e(TAG, s); 3653 } 3654 3655 int convertFeatureToNetworkType(int networkType, String feature) { 3656 int usedNetworkType = networkType; 3657 3658 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3659 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3660 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3661 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3662 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3663 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3664 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3665 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3666 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3667 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3668 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3669 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3670 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3671 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3672 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3673 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3674 } else { 3675 Slog.e(TAG, "Can't match any mobile netTracker!"); 3676 } 3677 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3678 if (TextUtils.equals(feature, "p2p")) { 3679 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3680 } else { 3681 Slog.e(TAG, "Can't match any wifi netTracker!"); 3682 } 3683 } else { 3684 Slog.e(TAG, "Unexpected network type"); 3685 } 3686 return usedNetworkType; 3687 } 3688 3689 private static <T> T checkNotNull(T value, String message) { 3690 if (value == null) { 3691 throw new NullPointerException(message); 3692 } 3693 return value; 3694 } 3695 3696 /** 3697 * Protect a socket from VPN routing rules. This method is used by 3698 * VpnBuilder and not available in ConnectivityManager. Permissions 3699 * are checked in Vpn class. 3700 * @hide 3701 */ 3702 @Override 3703 public boolean protectVpn(ParcelFileDescriptor socket) { 3704 throwIfLockdownEnabled(); 3705 try { 3706 int type = mActiveDefaultNetwork; 3707 int user = UserHandle.getUserId(Binder.getCallingUid()); 3708 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3709 synchronized(mVpns) { 3710 mVpns.get(user).protect(socket); 3711 } 3712 return true; 3713 } 3714 } catch (Exception e) { 3715 // ignore 3716 } finally { 3717 try { 3718 socket.close(); 3719 } catch (Exception e) { 3720 // ignore 3721 } 3722 } 3723 return false; 3724 } 3725 3726 /** 3727 * Prepare for a VPN application. This method is used by VpnDialogs 3728 * and not available in ConnectivityManager. Permissions are checked 3729 * in Vpn class. 3730 * @hide 3731 */ 3732 @Override 3733 public boolean prepareVpn(String oldPackage, String newPackage) { 3734 throwIfLockdownEnabled(); 3735 int user = UserHandle.getUserId(Binder.getCallingUid()); 3736 synchronized(mVpns) { 3737 return mVpns.get(user).prepare(oldPackage, newPackage); 3738 } 3739 } 3740 3741 @Override 3742 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3743 enforceMarkNetworkSocketPermission(); 3744 final long token = Binder.clearCallingIdentity(); 3745 try { 3746 int mark = mNetd.getMarkForUid(uid); 3747 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3748 if (mark == -1) { 3749 mark = 0; 3750 } 3751 NetworkUtils.markSocket(socket.getFd(), mark); 3752 } catch (RemoteException e) { 3753 } finally { 3754 Binder.restoreCallingIdentity(token); 3755 } 3756 } 3757 3758 /** 3759 * Configure a TUN interface and return its file descriptor. Parameters 3760 * are encoded and opaque to this class. This method is used by VpnBuilder 3761 * and not available in ConnectivityManager. Permissions are checked in 3762 * Vpn class. 3763 * @hide 3764 */ 3765 @Override 3766 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3767 throwIfLockdownEnabled(); 3768 int user = UserHandle.getUserId(Binder.getCallingUid()); 3769 synchronized(mVpns) { 3770 return mVpns.get(user).establish(config); 3771 } 3772 } 3773 3774 /** 3775 * Start legacy VPN, controlling native daemons as needed. Creates a 3776 * secondary thread to perform connection work, returning quickly. 3777 */ 3778 @Override 3779 public void startLegacyVpn(VpnProfile profile) { 3780 throwIfLockdownEnabled(); 3781 final LinkProperties egress = getActiveLinkProperties(); 3782 if (egress == null) { 3783 throw new IllegalStateException("Missing active network connection"); 3784 } 3785 int user = UserHandle.getUserId(Binder.getCallingUid()); 3786 synchronized(mVpns) { 3787 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3788 } 3789 } 3790 3791 /** 3792 * Return the information of the ongoing legacy VPN. This method is used 3793 * by VpnSettings and not available in ConnectivityManager. Permissions 3794 * are checked in Vpn class. 3795 * @hide 3796 */ 3797 @Override 3798 public LegacyVpnInfo getLegacyVpnInfo() { 3799 throwIfLockdownEnabled(); 3800 int user = UserHandle.getUserId(Binder.getCallingUid()); 3801 synchronized(mVpns) { 3802 return mVpns.get(user).getLegacyVpnInfo(); 3803 } 3804 } 3805 3806 /** 3807 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3808 * not available in ConnectivityManager. 3809 * Permissions are checked in Vpn class. 3810 * @hide 3811 */ 3812 @Override 3813 public VpnConfig getVpnConfig() { 3814 int user = UserHandle.getUserId(Binder.getCallingUid()); 3815 synchronized(mVpns) { 3816 return mVpns.get(user).getVpnConfig(); 3817 } 3818 } 3819 3820 /** 3821 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3822 * through NetworkStateTracker since it works differently. For example, it 3823 * needs to override DNS servers but never takes the default routes. It 3824 * relies on another data network, and it could keep existing connections 3825 * alive after reconnecting, switching between networks, or even resuming 3826 * from deep sleep. Calls from applications should be done synchronously 3827 * to avoid race conditions. As these are all hidden APIs, refactoring can 3828 * be done whenever a better abstraction is developed. 3829 */ 3830 public class VpnCallback { 3831 private VpnCallback() { 3832 } 3833 3834 public void onStateChanged(NetworkInfo info) { 3835 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3836 } 3837 3838 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3839 if (dnsServers == null) { 3840 restore(); 3841 return; 3842 } 3843 3844 // Convert DNS servers into addresses. 3845 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3846 for (String address : dnsServers) { 3847 // Double check the addresses and remove invalid ones. 3848 try { 3849 addresses.add(InetAddress.parseNumericAddress(address)); 3850 } catch (Exception e) { 3851 // ignore 3852 } 3853 } 3854 if (addresses.isEmpty()) { 3855 restore(); 3856 return; 3857 } 3858 3859 // Concatenate search domains into a string. 3860 StringBuilder buffer = new StringBuilder(); 3861 if (searchDomains != null) { 3862 for (String domain : searchDomains) { 3863 buffer.append(domain).append(' '); 3864 } 3865 } 3866 String domains = buffer.toString().trim(); 3867 3868 // Apply DNS changes. 3869 synchronized (mDnsLock) { 3870 updateDnsLocked("VPN", iface, addresses, domains, false); 3871 } 3872 3873 // Temporarily disable the default proxy (not global). 3874 synchronized (mProxyLock) { 3875 mDefaultProxyDisabled = true; 3876 if (mGlobalProxy == null && mDefaultProxy != null) { 3877 sendProxyBroadcast(null); 3878 } 3879 } 3880 3881 // TODO: support proxy per network. 3882 } 3883 3884 public void restore() { 3885 synchronized (mProxyLock) { 3886 mDefaultProxyDisabled = false; 3887 if (mGlobalProxy == null && mDefaultProxy != null) { 3888 sendProxyBroadcast(mDefaultProxy); 3889 } 3890 } 3891 } 3892 3893 public void protect(ParcelFileDescriptor socket) { 3894 try { 3895 final int mark = mNetd.getMarkForProtect(); 3896 NetworkUtils.markSocket(socket.getFd(), mark); 3897 } catch (RemoteException e) { 3898 } 3899 } 3900 3901 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3902 for (RouteInfo route : routes) { 3903 try { 3904 mNetd.setMarkedForwardingRoute(interfaze, route); 3905 } catch (RemoteException e) { 3906 } 3907 } 3908 } 3909 3910 public void setMarkedForwarding(String interfaze) { 3911 try { 3912 mNetd.setMarkedForwarding(interfaze); 3913 } catch (RemoteException e) { 3914 } 3915 } 3916 3917 public void clearMarkedForwarding(String interfaze) { 3918 try { 3919 mNetd.clearMarkedForwarding(interfaze); 3920 } catch (RemoteException e) { 3921 } 3922 } 3923 3924 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3925 int uidStart = uid * UserHandle.PER_USER_RANGE; 3926 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3927 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3928 } 3929 3930 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3931 int uidStart = uid * UserHandle.PER_USER_RANGE; 3932 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3933 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3934 } 3935 3936 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3937 boolean forwardDns) { 3938 try { 3939 mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd); 3940 if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3941 } catch (RemoteException e) { 3942 } 3943 3944 } 3945 3946 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3947 boolean forwardDns) { 3948 try { 3949 mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3950 if (forwardDns) mNetd.clearDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3951 } catch (RemoteException e) { 3952 } 3953 3954 } 3955 } 3956 3957 @Override 3958 public boolean updateLockdownVpn() { 3959 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3960 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3961 return false; 3962 } 3963 3964 // Tear down existing lockdown if profile was removed 3965 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3966 if (mLockdownEnabled) { 3967 if (!mKeyStore.isUnlocked()) { 3968 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3969 return false; 3970 } 3971 3972 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3973 final VpnProfile profile = VpnProfile.decode( 3974 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3975 int user = UserHandle.getUserId(Binder.getCallingUid()); 3976 synchronized(mVpns) { 3977 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3978 profile)); 3979 } 3980 } else { 3981 setLockdownTracker(null); 3982 } 3983 3984 return true; 3985 } 3986 3987 /** 3988 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3989 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3990 */ 3991 private void setLockdownTracker(LockdownVpnTracker tracker) { 3992 // Shutdown any existing tracker 3993 final LockdownVpnTracker existing = mLockdownTracker; 3994 mLockdownTracker = null; 3995 if (existing != null) { 3996 existing.shutdown(); 3997 } 3998 3999 try { 4000 if (tracker != null) { 4001 mNetd.setFirewallEnabled(true); 4002 mNetd.setFirewallInterfaceRule("lo", true); 4003 mLockdownTracker = tracker; 4004 mLockdownTracker.init(); 4005 } else { 4006 mNetd.setFirewallEnabled(false); 4007 } 4008 } catch (RemoteException e) { 4009 // ignored; NMS lives inside system_server 4010 } 4011 } 4012 4013 private void throwIfLockdownEnabled() { 4014 if (mLockdownEnabled) { 4015 throw new IllegalStateException("Unavailable in lockdown mode"); 4016 } 4017 } 4018 4019 public void supplyMessenger(int networkType, Messenger messenger) { 4020 enforceConnectivityInternalPermission(); 4021 4022 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4023 mNetTrackers[networkType].supplyMessenger(messenger); 4024 } 4025 } 4026 4027 public int findConnectionTypeForIface(String iface) { 4028 enforceConnectivityInternalPermission(); 4029 4030 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4031 for (NetworkStateTracker tracker : mNetTrackers) { 4032 if (tracker != null) { 4033 LinkProperties lp = tracker.getLinkProperties(); 4034 if (lp != null && iface.equals(lp.getInterfaceName())) { 4035 return tracker.getNetworkInfo().getType(); 4036 } 4037 } 4038 } 4039 return ConnectivityManager.TYPE_NONE; 4040 } 4041 4042 /** 4043 * Have mobile data fail fast if enabled. 4044 * 4045 * @param enabled DctConstants.ENABLED/DISABLED 4046 */ 4047 private void setEnableFailFastMobileData(int enabled) { 4048 int tag; 4049 4050 if (enabled == DctConstants.ENABLED) { 4051 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4052 } else { 4053 tag = mEnableFailFastMobileDataTag.get(); 4054 } 4055 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4056 enabled)); 4057 } 4058 4059 private boolean isMobileDataStateTrackerReady() { 4060 MobileDataStateTracker mdst = 4061 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4062 return (mdst != null) && (mdst.isReady()); 4063 } 4064 4065 /** 4066 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4067 */ 4068 4069 /** 4070 * No connection was possible to the network. 4071 * This is NOT a warm sim. 4072 */ 4073 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4074 4075 /** 4076 * A connection was made to the internet, all is well. 4077 * This is NOT a warm sim. 4078 */ 4079 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4080 4081 /** 4082 * A connection was made but no dns server was available to resolve a name to address. 4083 * This is NOT a warm sim since provisioning network is supported. 4084 */ 4085 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4086 4087 /** 4088 * A connection was made but could not open a TCP connection. 4089 * This is NOT a warm sim since provisioning network is supported. 4090 */ 4091 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4092 4093 /** 4094 * A connection was made but there was a redirection, we appear to be in walled garden. 4095 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4096 */ 4097 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4098 4099 /** 4100 * The mobile network is a provisioning network. 4101 * This is an indication of a warm sim on a mobile network such as AT&T. 4102 */ 4103 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4104 4105 /** 4106 * The mobile network is provisioning 4107 */ 4108 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4109 4110 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4111 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4112 4113 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4114 4115 @Override 4116 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4117 int timeOutMs = -1; 4118 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4119 enforceConnectivityInternalPermission(); 4120 4121 final long token = Binder.clearCallingIdentity(); 4122 try { 4123 timeOutMs = suggestedTimeOutMs; 4124 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4125 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4126 } 4127 4128 // Check that mobile networks are supported 4129 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4130 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4131 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4132 return timeOutMs; 4133 } 4134 4135 // If we're already checking don't do it again 4136 // TODO: Add a queue of results... 4137 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4138 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4139 return timeOutMs; 4140 } 4141 4142 // Start off with mobile notification off 4143 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4144 4145 CheckMp checkMp = new CheckMp(mContext, this); 4146 CheckMp.CallBack cb = new CheckMp.CallBack() { 4147 @Override 4148 void onComplete(Integer result) { 4149 if (DBG) log("CheckMp.onComplete: result=" + result); 4150 NetworkInfo ni = 4151 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4152 switch(result) { 4153 case CMP_RESULT_CODE_CONNECTABLE: 4154 case CMP_RESULT_CODE_NO_CONNECTION: 4155 case CMP_RESULT_CODE_NO_DNS: 4156 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4157 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4158 break; 4159 } 4160 case CMP_RESULT_CODE_REDIRECTED: { 4161 if (DBG) log("CheckMp.onComplete: warm sim"); 4162 String url = getMobileProvisioningUrl(); 4163 if (TextUtils.isEmpty(url)) { 4164 url = getMobileRedirectedProvisioningUrl(); 4165 } 4166 if (TextUtils.isEmpty(url) == false) { 4167 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4168 setProvNotificationVisible(true, 4169 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4170 url); 4171 } else { 4172 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4173 } 4174 break; 4175 } 4176 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4177 String url = getMobileProvisioningUrl(); 4178 if (TextUtils.isEmpty(url) == false) { 4179 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4180 setProvNotificationVisible(true, 4181 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4182 url); 4183 // Mark that we've got a provisioning network and 4184 // Disable Mobile Data until user actually starts provisioning. 4185 mIsProvisioningNetwork.set(true); 4186 MobileDataStateTracker mdst = (MobileDataStateTracker) 4187 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4188 mdst.setInternalDataEnable(false); 4189 } else { 4190 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4191 } 4192 break; 4193 } 4194 case CMP_RESULT_CODE_IS_PROVISIONING: { 4195 // FIXME: Need to know when provisioning is done. Probably we can 4196 // check the completion status if successful we're done if we 4197 // "timedout" or still connected to provisioning APN turn off data? 4198 if (DBG) log("CheckMp.onComplete: provisioning started"); 4199 mIsStartingProvisioning.set(false); 4200 break; 4201 } 4202 default: { 4203 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4204 break; 4205 } 4206 } 4207 mIsCheckingMobileProvisioning.set(false); 4208 } 4209 }; 4210 CheckMp.Params params = 4211 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4212 if (DBG) log("checkMobileProvisioning: params=" + params); 4213 checkMp.execute(params); 4214 } finally { 4215 Binder.restoreCallingIdentity(token); 4216 if (DBG) log("checkMobileProvisioning: X"); 4217 } 4218 return timeOutMs; 4219 } 4220 4221 static class CheckMp extends 4222 AsyncTask<CheckMp.Params, Void, Integer> { 4223 private static final String CHECKMP_TAG = "CheckMp"; 4224 4225 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4226 private static boolean mTestingFailures; 4227 4228 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4229 private static final int MAX_LOOPS = 4; 4230 4231 // Number of milli-seconds to complete all of the retires 4232 public static final int MAX_TIMEOUT_MS = 60000; 4233 4234 // The socket should retry only 5 seconds, the default is longer 4235 private static final int SOCKET_TIMEOUT_MS = 5000; 4236 4237 // Sleep time for network errors 4238 private static final int NET_ERROR_SLEEP_SEC = 3; 4239 4240 // Sleep time for network route establishment 4241 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4242 4243 // Short sleep time for polling :( 4244 private static final int POLLING_SLEEP_SEC = 1; 4245 4246 private Context mContext; 4247 private ConnectivityService mCs; 4248 private TelephonyManager mTm; 4249 private Params mParams; 4250 4251 /** 4252 * Parameters for AsyncTask.execute 4253 */ 4254 static class Params { 4255 private String mUrl; 4256 private long mTimeOutMs; 4257 private CallBack mCb; 4258 4259 Params(String url, long timeOutMs, CallBack cb) { 4260 mUrl = url; 4261 mTimeOutMs = timeOutMs; 4262 mCb = cb; 4263 } 4264 4265 @Override 4266 public String toString() { 4267 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4268 } 4269 } 4270 4271 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4272 // issued by name or ip address, for Google its by name so when we construct 4273 // this HostnameVerifier we'll pass the original Uri and use it to verify 4274 // the host. If the host name in the original uril fails we'll test the 4275 // hostname parameter just incase things change. 4276 static class CheckMpHostnameVerifier implements HostnameVerifier { 4277 Uri mOrgUri; 4278 4279 CheckMpHostnameVerifier(Uri orgUri) { 4280 mOrgUri = orgUri; 4281 } 4282 4283 @Override 4284 public boolean verify(String hostname, SSLSession session) { 4285 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4286 String orgUriHost = mOrgUri.getHost(); 4287 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4288 if (DBG) { 4289 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4290 + " orgUriHost=" + orgUriHost); 4291 } 4292 return retVal; 4293 } 4294 } 4295 4296 /** 4297 * The call back object passed in Params. onComplete will be called 4298 * on the main thread. 4299 */ 4300 abstract static class CallBack { 4301 // Called on the main thread. 4302 abstract void onComplete(Integer result); 4303 } 4304 4305 public CheckMp(Context context, ConnectivityService cs) { 4306 if (Build.IS_DEBUGGABLE) { 4307 mTestingFailures = 4308 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4309 } else { 4310 mTestingFailures = false; 4311 } 4312 4313 mContext = context; 4314 mCs = cs; 4315 4316 // Setup access to TelephonyService we'll be using. 4317 mTm = (TelephonyManager) mContext.getSystemService( 4318 Context.TELEPHONY_SERVICE); 4319 } 4320 4321 /** 4322 * Get the default url to use for the test. 4323 */ 4324 public String getDefaultUrl() { 4325 // See http://go/clientsdns for usage approval 4326 String server = Settings.Global.getString(mContext.getContentResolver(), 4327 Settings.Global.CAPTIVE_PORTAL_SERVER); 4328 if (server == null) { 4329 server = "clients3.google.com"; 4330 } 4331 return "http://" + server + "/generate_204"; 4332 } 4333 4334 /** 4335 * Detect if its possible to connect to the http url. DNS based detection techniques 4336 * do not work at all hotspots. The best way to check is to perform a request to 4337 * a known address that fetches the data we expect. 4338 */ 4339 private synchronized Integer isMobileOk(Params params) { 4340 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4341 Uri orgUri = Uri.parse(params.mUrl); 4342 Random rand = new Random(); 4343 mParams = params; 4344 4345 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4346 result = CMP_RESULT_CODE_NO_CONNECTION; 4347 log("isMobileOk: X not mobile capable result=" + result); 4348 return result; 4349 } 4350 4351 if (mCs.mIsStartingProvisioning.get()) { 4352 result = CMP_RESULT_CODE_IS_PROVISIONING; 4353 log("isMobileOk: X is provisioning result=" + result); 4354 return result; 4355 } 4356 4357 // See if we've already determined we've got a provisioning connection, 4358 // if so we don't need to do anything active. 4359 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4360 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4361 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4362 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4363 4364 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4365 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4366 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4367 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4368 4369 if (isDefaultProvisioning || isHipriProvisioning) { 4370 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4371 log("isMobileOk: X default || hipri is provisioning result=" + result); 4372 return result; 4373 } 4374 4375 try { 4376 // Continue trying to connect until time has run out 4377 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4378 4379 if (!mCs.isMobileDataStateTrackerReady()) { 4380 // Wait for MobileDataStateTracker to be ready. 4381 if (DBG) log("isMobileOk: mdst is not ready"); 4382 while(SystemClock.elapsedRealtime() < endTime) { 4383 if (mCs.isMobileDataStateTrackerReady()) { 4384 // Enable fail fast as we'll do retries here and use a 4385 // hipri connection so the default connection stays active. 4386 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4387 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4388 break; 4389 } 4390 sleep(POLLING_SLEEP_SEC); 4391 } 4392 } 4393 4394 log("isMobileOk: start hipri url=" + params.mUrl); 4395 4396 // First wait until we can start using hipri 4397 Binder binder = new Binder(); 4398 while(SystemClock.elapsedRealtime() < endTime) { 4399 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4400 Phone.FEATURE_ENABLE_HIPRI, binder); 4401 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4402 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4403 log("isMobileOk: hipri started"); 4404 break; 4405 } 4406 if (VDBG) log("isMobileOk: hipri not started yet"); 4407 result = CMP_RESULT_CODE_NO_CONNECTION; 4408 sleep(POLLING_SLEEP_SEC); 4409 } 4410 4411 // Continue trying to connect until time has run out 4412 while(SystemClock.elapsedRealtime() < endTime) { 4413 try { 4414 // Wait for hipri to connect. 4415 // TODO: Don't poll and handle situation where hipri fails 4416 // because default is retrying. See b/9569540 4417 NetworkInfo.State state = mCs 4418 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4419 if (state != NetworkInfo.State.CONNECTED) { 4420 if (true/*VDBG*/) { 4421 log("isMobileOk: not connected ni=" + 4422 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4423 } 4424 sleep(POLLING_SLEEP_SEC); 4425 result = CMP_RESULT_CODE_NO_CONNECTION; 4426 continue; 4427 } 4428 4429 // Hipri has started check if this is a provisioning url 4430 MobileDataStateTracker mdst = (MobileDataStateTracker) 4431 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4432 if (mdst.isProvisioningNetwork()) { 4433 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4434 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4435 return result; 4436 } else { 4437 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4438 } 4439 4440 // Get of the addresses associated with the url host. We need to use the 4441 // address otherwise HttpURLConnection object will use the name to get 4442 // the addresses and will try every address but that will bypass the 4443 // route to host we setup and the connection could succeed as the default 4444 // interface might be connected to the internet via wifi or other interface. 4445 InetAddress[] addresses; 4446 try { 4447 addresses = InetAddress.getAllByName(orgUri.getHost()); 4448 } catch (UnknownHostException e) { 4449 result = CMP_RESULT_CODE_NO_DNS; 4450 log("isMobileOk: X UnknownHostException result=" + result); 4451 return result; 4452 } 4453 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4454 4455 // Get the type of addresses supported by this link 4456 LinkProperties lp = mCs.getLinkProperties( 4457 ConnectivityManager.TYPE_MOBILE_HIPRI); 4458 boolean linkHasIpv4 = lp.hasIPv4Address(); 4459 boolean linkHasIpv6 = lp.hasIPv6Address(); 4460 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4461 + " linkHasIpv6=" + linkHasIpv6); 4462 4463 final ArrayList<InetAddress> validAddresses = 4464 new ArrayList<InetAddress>(addresses.length); 4465 4466 for (InetAddress addr : addresses) { 4467 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4468 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4469 validAddresses.add(addr); 4470 } 4471 } 4472 4473 if (validAddresses.size() == 0) { 4474 return CMP_RESULT_CODE_NO_CONNECTION; 4475 } 4476 4477 int addrTried = 0; 4478 while (true) { 4479 // Loop through at most MAX_LOOPS valid addresses or until 4480 // we run out of time 4481 if (addrTried++ >= MAX_LOOPS) { 4482 log("isMobileOk: too many loops tried - giving up"); 4483 break; 4484 } 4485 if (SystemClock.elapsedRealtime() >= endTime) { 4486 log("isMobileOk: spend too much time - giving up"); 4487 break; 4488 } 4489 4490 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4491 validAddresses.size())); 4492 4493 // Make a route to host so we check the specific interface. 4494 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4495 hostAddr.getAddress(), null)) { 4496 // Wait a short time to be sure the route is established ?? 4497 log("isMobileOk:" 4498 + " wait to establish route to hostAddr=" + hostAddr); 4499 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4500 } else { 4501 log("isMobileOk:" 4502 + " could not establish route to hostAddr=" + hostAddr); 4503 // Wait a short time before the next attempt 4504 sleep(NET_ERROR_SLEEP_SEC); 4505 continue; 4506 } 4507 4508 // Rewrite the url to have numeric address to use the specific route 4509 // using http for half the attempts and https for the other half. 4510 // Doing https first and http second as on a redirected walled garden 4511 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4512 // handshake timed out" which we declare as 4513 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4514 // having http second we will be using logic used for some time. 4515 URL newUrl; 4516 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4517 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4518 orgUri.getPath()); 4519 log("isMobileOk: newUrl=" + newUrl); 4520 4521 HttpURLConnection urlConn = null; 4522 try { 4523 // Open the connection set the request headers and get the response 4524 urlConn = (HttpURLConnection)newUrl.openConnection( 4525 java.net.Proxy.NO_PROXY); 4526 if (scheme.equals("https")) { 4527 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4528 new CheckMpHostnameVerifier(orgUri)); 4529 } 4530 urlConn.setInstanceFollowRedirects(false); 4531 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4532 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4533 urlConn.setUseCaches(false); 4534 urlConn.setAllowUserInteraction(false); 4535 // Set the "Connection" to "Close" as by default "Keep-Alive" 4536 // is used which is useless in this case. 4537 urlConn.setRequestProperty("Connection", "close"); 4538 int responseCode = urlConn.getResponseCode(); 4539 4540 // For debug display the headers 4541 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4542 log("isMobileOk: headers=" + headers); 4543 4544 // Close the connection 4545 urlConn.disconnect(); 4546 urlConn = null; 4547 4548 if (mTestingFailures) { 4549 // Pretend no connection, this tests using http and https 4550 result = CMP_RESULT_CODE_NO_CONNECTION; 4551 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4552 continue; 4553 } 4554 4555 if (responseCode == 204) { 4556 // Return 4557 result = CMP_RESULT_CODE_CONNECTABLE; 4558 log("isMobileOk: X got expected responseCode=" + responseCode 4559 + " result=" + result); 4560 return result; 4561 } else { 4562 // Retry to be sure this was redirected, we've gotten 4563 // occasions where a server returned 200 even though 4564 // the device didn't have a "warm" sim. 4565 log("isMobileOk: not expected responseCode=" + responseCode); 4566 // TODO - it would be nice in the single-address case to do 4567 // another DNS resolve here, but flushing the cache is a bit 4568 // heavy-handed. 4569 result = CMP_RESULT_CODE_REDIRECTED; 4570 } 4571 } catch (Exception e) { 4572 log("isMobileOk: HttpURLConnection Exception" + e); 4573 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4574 if (urlConn != null) { 4575 urlConn.disconnect(); 4576 urlConn = null; 4577 } 4578 sleep(NET_ERROR_SLEEP_SEC); 4579 continue; 4580 } 4581 } 4582 log("isMobileOk: X loops|timed out result=" + result); 4583 return result; 4584 } catch (Exception e) { 4585 log("isMobileOk: Exception e=" + e); 4586 continue; 4587 } 4588 } 4589 log("isMobileOk: timed out"); 4590 } finally { 4591 log("isMobileOk: F stop hipri"); 4592 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4593 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4594 Phone.FEATURE_ENABLE_HIPRI); 4595 4596 // Wait for hipri to disconnect. 4597 long endTime = SystemClock.elapsedRealtime() + 5000; 4598 4599 while(SystemClock.elapsedRealtime() < endTime) { 4600 NetworkInfo.State state = mCs 4601 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4602 if (state != NetworkInfo.State.DISCONNECTED) { 4603 if (VDBG) { 4604 log("isMobileOk: connected ni=" + 4605 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4606 } 4607 sleep(POLLING_SLEEP_SEC); 4608 continue; 4609 } 4610 } 4611 4612 log("isMobileOk: X result=" + result); 4613 } 4614 return result; 4615 } 4616 4617 @Override 4618 protected Integer doInBackground(Params... params) { 4619 return isMobileOk(params[0]); 4620 } 4621 4622 @Override 4623 protected void onPostExecute(Integer result) { 4624 log("onPostExecute: result=" + result); 4625 if ((mParams != null) && (mParams.mCb != null)) { 4626 mParams.mCb.onComplete(result); 4627 } 4628 } 4629 4630 private String inetAddressesToString(InetAddress[] addresses) { 4631 StringBuffer sb = new StringBuffer(); 4632 boolean firstTime = true; 4633 for(InetAddress addr : addresses) { 4634 if (firstTime) { 4635 firstTime = false; 4636 } else { 4637 sb.append(","); 4638 } 4639 sb.append(addr); 4640 } 4641 return sb.toString(); 4642 } 4643 4644 private void printNetworkInfo() { 4645 boolean hasIccCard = mTm.hasIccCard(); 4646 int simState = mTm.getSimState(); 4647 log("hasIccCard=" + hasIccCard 4648 + " simState=" + simState); 4649 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4650 if (ni != null) { 4651 log("ni.length=" + ni.length); 4652 for (NetworkInfo netInfo: ni) { 4653 log("netInfo=" + netInfo.toString()); 4654 } 4655 } else { 4656 log("no network info ni=null"); 4657 } 4658 } 4659 4660 /** 4661 * Sleep for a few seconds then return. 4662 * @param seconds 4663 */ 4664 private static void sleep(int seconds) { 4665 long stopTime = System.nanoTime() + (seconds * 1000000000); 4666 long sleepTime; 4667 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4668 try { 4669 Thread.sleep(sleepTime / 1000000); 4670 } catch (InterruptedException ignored) { 4671 } 4672 } 4673 } 4674 4675 private static void log(String s) { 4676 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4677 } 4678 } 4679 4680 // TODO: Move to ConnectivityManager and make public? 4681 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4682 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4683 4684 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4685 @Override 4686 public void onReceive(Context context, Intent intent) { 4687 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4688 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4689 } 4690 } 4691 }; 4692 4693 private void handleMobileProvisioningAction(String url) { 4694 // Mark notification as not visible 4695 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4696 4697 // If provisioning network handle as a special case, 4698 // otherwise launch browser with the intent directly. 4699 if (mIsProvisioningNetwork.get()) { 4700 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4701 mIsStartingProvisioning.set(true); 4702 MobileDataStateTracker mdst = (MobileDataStateTracker) 4703 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4704 mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4705 mdst.enableMobileProvisioning(url); 4706 } else { 4707 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4708 // Check for apps that can handle provisioning first 4709 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4710 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4711 + mTelephonyManager.getSimOperator()); 4712 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4713 != null) { 4714 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4715 Intent.FLAG_ACTIVITY_NEW_TASK); 4716 mContext.startActivity(provisioningIntent); 4717 } else { 4718 // If no apps exist, use standard URL ACTION_VIEW method 4719 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4720 Intent.CATEGORY_APP_BROWSER); 4721 newIntent.setData(Uri.parse(url)); 4722 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4723 Intent.FLAG_ACTIVITY_NEW_TASK); 4724 try { 4725 mContext.startActivity(newIntent); 4726 } catch (ActivityNotFoundException e) { 4727 loge("handleMobileProvisioningAction: startActivity failed" + e); 4728 } 4729 } 4730 } 4731 } 4732 4733 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4734 private volatile boolean mIsNotificationVisible = false; 4735 4736 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4737 String url) { 4738 if (DBG) { 4739 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4740 + " extraInfo=" + extraInfo + " url=" + url); 4741 } 4742 4743 Resources r = Resources.getSystem(); 4744 NotificationManager notificationManager = (NotificationManager) mContext 4745 .getSystemService(Context.NOTIFICATION_SERVICE); 4746 4747 if (visible) { 4748 CharSequence title; 4749 CharSequence details; 4750 int icon; 4751 Intent intent; 4752 Notification notification = new Notification(); 4753 switch (networkType) { 4754 case ConnectivityManager.TYPE_WIFI: 4755 title = r.getString(R.string.wifi_available_sign_in, 0); 4756 details = r.getString(R.string.network_available_sign_in_detailed, 4757 extraInfo); 4758 icon = R.drawable.stat_notify_wifi_in_range; 4759 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4760 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4761 Intent.FLAG_ACTIVITY_NEW_TASK); 4762 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4763 break; 4764 case ConnectivityManager.TYPE_MOBILE: 4765 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4766 title = r.getString(R.string.network_available_sign_in, 0); 4767 // TODO: Change this to pull from NetworkInfo once a printable 4768 // name has been added to it 4769 details = mTelephonyManager.getNetworkOperatorName(); 4770 icon = R.drawable.stat_notify_rssi_in_range; 4771 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4772 intent.putExtra("EXTRA_URL", url); 4773 intent.setFlags(0); 4774 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4775 break; 4776 default: 4777 title = r.getString(R.string.network_available_sign_in, 0); 4778 details = r.getString(R.string.network_available_sign_in_detailed, 4779 extraInfo); 4780 icon = R.drawable.stat_notify_rssi_in_range; 4781 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4782 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4783 Intent.FLAG_ACTIVITY_NEW_TASK); 4784 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4785 break; 4786 } 4787 4788 notification.when = 0; 4789 notification.icon = icon; 4790 notification.flags = Notification.FLAG_AUTO_CANCEL; 4791 notification.tickerText = title; 4792 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4793 4794 try { 4795 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4796 } catch (NullPointerException npe) { 4797 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4798 npe.printStackTrace(); 4799 } 4800 } else { 4801 try { 4802 notificationManager.cancel(NOTIFICATION_ID, networkType); 4803 } catch (NullPointerException npe) { 4804 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4805 npe.printStackTrace(); 4806 } 4807 } 4808 mIsNotificationVisible = visible; 4809 } 4810 4811 /** Location to an updatable file listing carrier provisioning urls. 4812 * An example: 4813 * 4814 * <?xml version="1.0" encoding="utf-8"?> 4815 * <provisioningUrls> 4816 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4817 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4818 * </provisioningUrls> 4819 */ 4820 private static final String PROVISIONING_URL_PATH = 4821 "/data/misc/radio/provisioning_urls.xml"; 4822 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4823 4824 /** XML tag for root element. */ 4825 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4826 /** XML tag for individual url */ 4827 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4828 /** XML tag for redirected url */ 4829 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4830 /** XML attribute for mcc */ 4831 private static final String ATTR_MCC = "mcc"; 4832 /** XML attribute for mnc */ 4833 private static final String ATTR_MNC = "mnc"; 4834 4835 private static final int REDIRECTED_PROVISIONING = 1; 4836 private static final int PROVISIONING = 2; 4837 4838 private String getProvisioningUrlBaseFromFile(int type) { 4839 FileReader fileReader = null; 4840 XmlPullParser parser = null; 4841 Configuration config = mContext.getResources().getConfiguration(); 4842 String tagType; 4843 4844 switch (type) { 4845 case PROVISIONING: 4846 tagType = TAG_PROVISIONING_URL; 4847 break; 4848 case REDIRECTED_PROVISIONING: 4849 tagType = TAG_REDIRECTED_URL; 4850 break; 4851 default: 4852 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4853 type); 4854 } 4855 4856 try { 4857 fileReader = new FileReader(mProvisioningUrlFile); 4858 parser = Xml.newPullParser(); 4859 parser.setInput(fileReader); 4860 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4861 4862 while (true) { 4863 XmlUtils.nextElement(parser); 4864 4865 String element = parser.getName(); 4866 if (element == null) break; 4867 4868 if (element.equals(tagType)) { 4869 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4870 try { 4871 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4872 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4873 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4874 parser.next(); 4875 if (parser.getEventType() == XmlPullParser.TEXT) { 4876 return parser.getText(); 4877 } 4878 } 4879 } 4880 } catch (NumberFormatException e) { 4881 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4882 } 4883 } 4884 } 4885 return null; 4886 } catch (FileNotFoundException e) { 4887 loge("Carrier Provisioning Urls file not found"); 4888 } catch (XmlPullParserException e) { 4889 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4890 } catch (IOException e) { 4891 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4892 } finally { 4893 if (fileReader != null) { 4894 try { 4895 fileReader.close(); 4896 } catch (IOException e) {} 4897 } 4898 } 4899 return null; 4900 } 4901 4902 @Override 4903 public String getMobileRedirectedProvisioningUrl() { 4904 enforceConnectivityInternalPermission(); 4905 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4906 if (TextUtils.isEmpty(url)) { 4907 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4908 } 4909 return url; 4910 } 4911 4912 @Override 4913 public String getMobileProvisioningUrl() { 4914 enforceConnectivityInternalPermission(); 4915 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4916 if (TextUtils.isEmpty(url)) { 4917 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4918 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4919 } else { 4920 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4921 } 4922 // populate the iccid, imei and phone number in the provisioning url. 4923 if (!TextUtils.isEmpty(url)) { 4924 String phoneNumber = mTelephonyManager.getLine1Number(); 4925 if (TextUtils.isEmpty(phoneNumber)) { 4926 phoneNumber = "0000000000"; 4927 } 4928 url = String.format(url, 4929 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4930 mTelephonyManager.getDeviceId() /* IMEI */, 4931 phoneNumber /* Phone numer */); 4932 } 4933 4934 return url; 4935 } 4936 4937 @Override 4938 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4939 String extraInfo, String url) { 4940 enforceConnectivityInternalPermission(); 4941 setProvNotificationVisible(visible, networkType, extraInfo, url); 4942 } 4943 4944 @Override 4945 public void setAirplaneMode(boolean enable) { 4946 enforceConnectivityInternalPermission(); 4947 final long ident = Binder.clearCallingIdentity(); 4948 try { 4949 final ContentResolver cr = mContext.getContentResolver(); 4950 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4951 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4952 intent.putExtra("state", enable); 4953 mContext.sendBroadcast(intent); 4954 } finally { 4955 Binder.restoreCallingIdentity(ident); 4956 } 4957 } 4958 4959 private void onUserStart(int userId) { 4960 synchronized(mVpns) { 4961 Vpn userVpn = mVpns.get(userId); 4962 if (userVpn != null) { 4963 loge("Starting user already has a VPN"); 4964 return; 4965 } 4966 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 4967 mVpns.put(userId, userVpn); 4968 userVpn.startMonitoring(mContext, mTrackerHandler); 4969 } 4970 } 4971 4972 private void onUserStop(int userId) { 4973 synchronized(mVpns) { 4974 Vpn userVpn = mVpns.get(userId); 4975 if (userVpn == null) { 4976 loge("Stopping user has no VPN"); 4977 return; 4978 } 4979 mVpns.delete(userId); 4980 } 4981 } 4982 4983 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 4984 @Override 4985 public void onReceive(Context context, Intent intent) { 4986 final String action = intent.getAction(); 4987 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 4988 if (userId == UserHandle.USER_NULL) return; 4989 4990 if (Intent.ACTION_USER_STARTING.equals(action)) { 4991 onUserStart(userId); 4992 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 4993 onUserStop(userId); 4994 } 4995 } 4996 }; 4997 4998 @Override 4999 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5000 enforceAccessPermission(); 5001 if (isNetworkTypeValid(networkType)) { 5002 return mNetTrackers[networkType].getLinkQualityInfo(); 5003 } else { 5004 return null; 5005 } 5006 } 5007 5008 @Override 5009 public LinkQualityInfo getActiveLinkQualityInfo() { 5010 enforceAccessPermission(); 5011 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 5012 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5013 } else { 5014 return null; 5015 } 5016 } 5017 5018 @Override 5019 public LinkQualityInfo[] getAllLinkQualityInfo() { 5020 enforceAccessPermission(); 5021 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5022 for (NetworkStateTracker tracker : mNetTrackers) { 5023 if (tracker != null) { 5024 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5025 if (li != null) { 5026 result.add(li); 5027 } 5028 } 5029 } 5030 5031 return result.toArray(new LinkQualityInfo[result.size()]); 5032 } 5033 5034 /* Infrastructure for network sampling */ 5035 5036 private void handleNetworkSamplingTimeout() { 5037 5038 log("Sampling interval elapsed, updating statistics .."); 5039 5040 // initialize list of interfaces .. 5041 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5042 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5043 for (NetworkStateTracker tracker : mNetTrackers) { 5044 if (tracker != null) { 5045 String ifaceName = tracker.getNetworkInterfaceName(); 5046 if (ifaceName != null) { 5047 mapIfaceToSample.put(ifaceName, null); 5048 } 5049 } 5050 } 5051 5052 // Read samples for all interfaces 5053 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5054 5055 // process samples for all networks 5056 for (NetworkStateTracker tracker : mNetTrackers) { 5057 if (tracker != null) { 5058 String ifaceName = tracker.getNetworkInterfaceName(); 5059 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5060 if (ss != null) { 5061 // end the previous sampling cycle 5062 tracker.stopSampling(ss); 5063 // start a new sampling cycle .. 5064 tracker.startSampling(ss); 5065 } 5066 } 5067 } 5068 5069 log("Done."); 5070 5071 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5072 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5073 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5074 5075 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5076 5077 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5078 } 5079 5080 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5081 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5082 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5083 } 5084} 5085