ConnectivityService.java revision 207900c23b26d0df9ab28c709db4a1007d7d7904
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.NetworkConfig; 69import android.net.NetworkInfo; 70import android.net.NetworkInfo.DetailedState; 71import android.net.NetworkQuotaInfo; 72import android.net.NetworkState; 73import android.net.NetworkStateTracker; 74import android.net.NetworkUtils; 75import android.net.Proxy; 76import android.net.ProxyDataTracker; 77import android.net.ProxyInfo; 78import android.net.RouteInfo; 79import android.net.SamplingDataTracker; 80import android.net.Uri; 81import android.net.wifi.WifiStateTracker; 82import android.net.wimax.WimaxManagerConstants; 83import android.os.AsyncTask; 84import android.os.Binder; 85import android.os.Build; 86import android.os.FileUtils; 87import android.os.Handler; 88import android.os.HandlerThread; 89import android.os.IBinder; 90import android.os.INetworkManagementService; 91import android.os.Looper; 92import android.os.Message; 93import android.os.Messenger; 94import android.os.ParcelFileDescriptor; 95import android.os.PowerManager; 96import android.os.Process; 97import android.os.RemoteException; 98import android.os.ServiceManager; 99import android.os.SystemClock; 100import android.os.SystemProperties; 101import android.os.UserHandle; 102import android.provider.Settings; 103import android.security.Credentials; 104import android.security.KeyStore; 105import android.telephony.TelephonyManager; 106import android.text.TextUtils; 107import android.util.Slog; 108import android.util.SparseArray; 109import android.util.SparseIntArray; 110import android.util.Xml; 111 112import com.android.internal.R; 113import com.android.internal.annotations.GuardedBy; 114import com.android.internal.net.LegacyVpnInfo; 115import com.android.internal.net.VpnConfig; 116import com.android.internal.net.VpnProfile; 117import com.android.internal.telephony.DctConstants; 118import com.android.internal.telephony.Phone; 119import com.android.internal.telephony.PhoneConstants; 120import com.android.internal.telephony.TelephonyIntents; 121import com.android.internal.util.IndentingPrintWriter; 122import com.android.internal.util.XmlUtils; 123import com.android.server.am.BatteryStatsService; 124import com.android.server.connectivity.DataConnectionStats; 125import com.android.server.connectivity.Nat464Xlat; 126import com.android.server.connectivity.PacManager; 127import com.android.server.connectivity.Tethering; 128import com.android.server.connectivity.Vpn; 129import com.android.server.net.BaseNetworkObserver; 130import com.android.server.net.LockdownVpnTracker; 131import com.google.android.collect.Lists; 132import com.google.android.collect.Sets; 133 134import dalvik.system.DexClassLoader; 135 136import org.xmlpull.v1.XmlPullParser; 137import org.xmlpull.v1.XmlPullParserException; 138 139import java.io.File; 140import java.io.FileDescriptor; 141import java.io.FileNotFoundException; 142import java.io.FileReader; 143import java.io.IOException; 144import java.io.PrintWriter; 145import java.lang.reflect.Constructor; 146import java.net.HttpURLConnection; 147import java.net.Inet4Address; 148import java.net.Inet6Address; 149import java.net.InetAddress; 150import java.net.URL; 151import java.net.UnknownHostException; 152import java.util.ArrayList; 153import java.util.Arrays; 154import java.util.Collection; 155import java.util.GregorianCalendar; 156import java.util.HashMap; 157import java.util.HashSet; 158import java.util.List; 159import java.util.Map; 160import java.util.Random; 161import java.util.concurrent.atomic.AtomicBoolean; 162import java.util.concurrent.atomic.AtomicInteger; 163 164import javax.net.ssl.HostnameVerifier; 165import javax.net.ssl.HttpsURLConnection; 166import javax.net.ssl.SSLSession; 167 168/** 169 * @hide 170 */ 171public class ConnectivityService extends IConnectivityManager.Stub { 172 private static final String TAG = "ConnectivityService"; 173 174 private static final boolean DBG = true; 175 private static final boolean VDBG = false; 176 177 private static final boolean LOGD_RULES = false; 178 179 // TODO: create better separation between radio types and network types 180 181 // how long to wait before switching back to a radio's default network 182 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 183 // system property that can override the above value 184 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 185 "android.telephony.apn-restore"; 186 187 // Default value if FAIL_FAST_TIME_MS is not set 188 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 189 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 190 private static final String FAIL_FAST_TIME_MS = 191 "persist.radio.fail_fast_time_ms"; 192 193 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 194 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 195 196 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 197 198 private PendingIntent mSampleIntervalElapsedIntent; 199 200 // Set network sampling interval at 12 minutes, this way, even if the timers get 201 // aggregated, it will fire at around 15 minutes, which should allow us to 202 // aggregate this timer with other timers (specially the socket keep alive timers) 203 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 12 * 60); 204 205 // start network sampling a minute after booting ... 206 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 60); 207 208 AlarmManager mAlarmManager; 209 210 // used in recursive route setting to add gateways for the host for which 211 // a host route was requested. 212 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 213 214 private Tethering mTethering; 215 216 private KeyStore mKeyStore; 217 218 @GuardedBy("mVpns") 219 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 220 private VpnCallback mVpnCallback = new VpnCallback(); 221 222 private boolean mLockdownEnabled; 223 private LockdownVpnTracker mLockdownTracker; 224 225 private Nat464Xlat mClat; 226 227 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 228 private Object mRulesLock = new Object(); 229 /** Currently active network rules by UID. */ 230 private SparseIntArray mUidRules = new SparseIntArray(); 231 /** Set of ifaces that are costly. */ 232 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 233 234 /** 235 * Sometimes we want to refer to the individual network state 236 * trackers separately, and sometimes we just want to treat them 237 * abstractly. 238 */ 239 private NetworkStateTracker mNetTrackers[]; 240 241 /* Handles captive portal check on a network */ 242 private CaptivePortalTracker mCaptivePortalTracker; 243 244 /** 245 * The link properties that define the current links 246 */ 247 private LinkProperties mCurrentLinkProperties[]; 248 249 /** 250 * A per Net list of the PID's that requested access to the net 251 * used both as a refcount and for per-PID DNS selection 252 */ 253 private List<Integer> mNetRequestersPids[]; 254 255 // priority order of the nettrackers 256 // (excluding dynamically set mNetworkPreference) 257 // TODO - move mNetworkTypePreference into this 258 private int[] mPriorityList; 259 260 private Context mContext; 261 private int mNetworkPreference; 262 private int mActiveDefaultNetwork = -1; 263 // 0 is full bad, 100 is full good 264 private int mDefaultInetCondition = 0; 265 private int mDefaultInetConditionPublished = 0; 266 private boolean mInetConditionChangeInFlight = false; 267 private int mDefaultConnectionSequence = 0; 268 269 private Object mDnsLock = new Object(); 270 private int mNumDnsEntries; 271 272 private boolean mTestMode; 273 private static ConnectivityService sServiceInstance; 274 275 private INetworkManagementService mNetd; 276 private INetworkPolicyManager mPolicyManager; 277 278 private static final int ENABLED = 1; 279 private static final int DISABLED = 0; 280 281 private static final boolean ADD = true; 282 private static final boolean REMOVE = false; 283 284 private static final boolean TO_DEFAULT_TABLE = true; 285 private static final boolean TO_SECONDARY_TABLE = false; 286 287 private static final boolean EXEMPT = true; 288 private static final boolean UNEXEMPT = false; 289 290 /** 291 * used internally as a delayed event to make us switch back to the 292 * default network 293 */ 294 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 295 296 /** 297 * used internally to change our mobile data enabled flag 298 */ 299 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 300 301 /** 302 * used internally to change our network preference setting 303 * arg1 = networkType to prefer 304 */ 305 private static final int EVENT_SET_NETWORK_PREFERENCE = 3; 306 307 /** 308 * used internally to synchronize inet condition reports 309 * arg1 = networkType 310 * arg2 = condition (0 bad, 100 good) 311 */ 312 private static final int EVENT_INET_CONDITION_CHANGE = 4; 313 314 /** 315 * used internally to mark the end of inet condition hold periods 316 * arg1 = networkType 317 */ 318 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 319 320 /** 321 * used internally to set enable/disable cellular data 322 * arg1 = ENBALED or DISABLED 323 */ 324 private static final int EVENT_SET_MOBILE_DATA = 7; 325 326 /** 327 * used internally to clear a wakelock when transitioning 328 * from one net to another 329 */ 330 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 331 332 /** 333 * used internally to reload global proxy settings 334 */ 335 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 336 337 /** 338 * used internally to set external dependency met/unmet 339 * arg1 = ENABLED (met) or DISABLED (unmet) 340 * arg2 = NetworkType 341 */ 342 private static final int EVENT_SET_DEPENDENCY_MET = 10; 343 344 /** 345 * used internally to send a sticky broadcast delayed. 346 */ 347 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 348 349 /** 350 * Used internally to 351 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 352 */ 353 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 354 355 private static final int EVENT_VPN_STATE_CHANGED = 13; 356 357 /** 358 * Used internally to disable fail fast of mobile data 359 */ 360 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 361 362 /** 363 * user internally to indicate that data sampling interval is up 364 */ 365 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 366 367 /** 368 * PAC manager has received new port. 369 */ 370 private static final int EVENT_PROXY_HAS_CHANGED = 16; 371 372 /** Handler used for internal events. */ 373 private InternalHandler mHandler; 374 /** Handler used for incoming {@link NetworkStateTracker} events. */ 375 private NetworkStateTrackerHandler mTrackerHandler; 376 377 // list of DeathRecipients used to make sure features are turned off when 378 // a process dies 379 private List<FeatureUser> mFeatureUsers; 380 381 private boolean mSystemReady; 382 private Intent mInitialBroadcast; 383 384 private PowerManager.WakeLock mNetTransitionWakeLock; 385 private String mNetTransitionWakeLockCausedBy = ""; 386 private int mNetTransitionWakeLockSerialNumber; 387 private int mNetTransitionWakeLockTimeout; 388 389 private InetAddress mDefaultDns; 390 391 // Lock for protecting access to mAddedRoutes and mExemptAddresses 392 private final Object mRoutesLock = new Object(); 393 394 // this collection is used to refcount the added routes - if there are none left 395 // it's time to remove the route from the route table 396 @GuardedBy("mRoutesLock") 397 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 398 399 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 400 // used to handle cleanup of exempt rules 401 @GuardedBy("mRoutesLock") 402 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 403 404 // used in DBG mode to track inet condition reports 405 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 406 private ArrayList mInetLog; 407 408 // track the current default http proxy - tell the world if we get a new one (real change) 409 private ProxyInfo mDefaultProxy = null; 410 private Object mProxyLock = new Object(); 411 private boolean mDefaultProxyDisabled = false; 412 413 // track the global proxy. 414 private ProxyInfo mGlobalProxy = null; 415 416 private PacManager mPacManager = null; 417 418 private SettingsObserver mSettingsObserver; 419 420 private AppOpsManager mAppOpsManager; 421 422 NetworkConfig[] mNetConfigs; 423 int mNetworksDefined; 424 425 private static class RadioAttributes { 426 public int mSimultaneity; 427 public int mType; 428 public RadioAttributes(String init) { 429 String fragments[] = init.split(","); 430 mType = Integer.parseInt(fragments[0]); 431 mSimultaneity = Integer.parseInt(fragments[1]); 432 } 433 } 434 RadioAttributes[] mRadioAttributes; 435 436 // the set of network types that can only be enabled by system/sig apps 437 List mProtectedNetworks; 438 439 private DataConnectionStats mDataConnectionStats; 440 441 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 442 443 TelephonyManager mTelephonyManager; 444 445 public ConnectivityService(Context context, INetworkManagementService netd, 446 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 447 // Currently, omitting a NetworkFactory will create one internally 448 // TODO: create here when we have cleaner WiMAX support 449 this(context, netd, statsService, policyManager, null); 450 } 451 452 public ConnectivityService(Context context, INetworkManagementService netManager, 453 INetworkStatsService statsService, INetworkPolicyManager policyManager, 454 NetworkFactory netFactory) { 455 if (DBG) log("ConnectivityService starting up"); 456 457 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 458 handlerThread.start(); 459 mHandler = new InternalHandler(handlerThread.getLooper()); 460 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 461 462 if (netFactory == null) { 463 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 464 } 465 466 // setup our unique device name 467 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 468 String id = Settings.Secure.getString(context.getContentResolver(), 469 Settings.Secure.ANDROID_ID); 470 if (id != null && id.length() > 0) { 471 String name = new String("android-").concat(id); 472 SystemProperties.set("net.hostname", name); 473 } 474 } 475 476 // read our default dns server ip 477 String dns = Settings.Global.getString(context.getContentResolver(), 478 Settings.Global.DEFAULT_DNS_SERVER); 479 if (dns == null || dns.length() == 0) { 480 dns = context.getResources().getString( 481 com.android.internal.R.string.config_default_dns_server); 482 } 483 try { 484 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 485 } catch (IllegalArgumentException e) { 486 loge("Error setting defaultDns using " + dns); 487 } 488 489 mContext = checkNotNull(context, "missing Context"); 490 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 491 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 492 mKeyStore = KeyStore.getInstance(); 493 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 494 495 try { 496 mPolicyManager.registerListener(mPolicyListener); 497 } catch (RemoteException e) { 498 // ouch, no rules updates means some processes may never get network 499 loge("unable to register INetworkPolicyListener" + e.toString()); 500 } 501 502 final PowerManager powerManager = (PowerManager) context.getSystemService( 503 Context.POWER_SERVICE); 504 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 505 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 506 com.android.internal.R.integer.config_networkTransitionTimeout); 507 508 mNetTrackers = new NetworkStateTracker[ 509 ConnectivityManager.MAX_NETWORK_TYPE+1]; 510 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 511 512 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 513 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 514 515 // Load device network attributes from resources 516 String[] raStrings = context.getResources().getStringArray( 517 com.android.internal.R.array.radioAttributes); 518 for (String raString : raStrings) { 519 RadioAttributes r = new RadioAttributes(raString); 520 if (VDBG) log("raString=" + raString + " r=" + r); 521 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 522 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 523 continue; 524 } 525 if (mRadioAttributes[r.mType] != null) { 526 loge("Error in radioAttributes - ignoring attempt to redefine type " + 527 r.mType); 528 continue; 529 } 530 mRadioAttributes[r.mType] = r; 531 } 532 533 // TODO: What is the "correct" way to do determine if this is a wifi only device? 534 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 535 log("wifiOnly=" + wifiOnly); 536 String[] naStrings = context.getResources().getStringArray( 537 com.android.internal.R.array.networkAttributes); 538 for (String naString : naStrings) { 539 try { 540 NetworkConfig n = new NetworkConfig(naString); 541 if (VDBG) log("naString=" + naString + " config=" + n); 542 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 543 loge("Error in networkAttributes - ignoring attempt to define type " + 544 n.type); 545 continue; 546 } 547 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 548 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 549 n.type); 550 continue; 551 } 552 if (mNetConfigs[n.type] != null) { 553 loge("Error in networkAttributes - ignoring attempt to redefine type " + 554 n.type); 555 continue; 556 } 557 if (mRadioAttributes[n.radio] == null) { 558 loge("Error in networkAttributes - ignoring attempt to use undefined " + 559 "radio " + n.radio + " in network type " + n.type); 560 continue; 561 } 562 mNetConfigs[n.type] = n; 563 mNetworksDefined++; 564 } catch(Exception e) { 565 // ignore it - leave the entry null 566 } 567 } 568 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 569 570 mProtectedNetworks = new ArrayList<Integer>(); 571 int[] protectedNetworks = context.getResources().getIntArray( 572 com.android.internal.R.array.config_protectedNetworks); 573 for (int p : protectedNetworks) { 574 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 575 mProtectedNetworks.add(p); 576 } else { 577 if (DBG) loge("Ignoring protectedNetwork " + p); 578 } 579 } 580 581 // high priority first 582 mPriorityList = new int[mNetworksDefined]; 583 { 584 int insertionPoint = mNetworksDefined-1; 585 int currentLowest = 0; 586 int nextLowest = 0; 587 while (insertionPoint > -1) { 588 for (NetworkConfig na : mNetConfigs) { 589 if (na == null) continue; 590 if (na.priority < currentLowest) continue; 591 if (na.priority > currentLowest) { 592 if (na.priority < nextLowest || nextLowest == 0) { 593 nextLowest = na.priority; 594 } 595 continue; 596 } 597 mPriorityList[insertionPoint--] = na.type; 598 } 599 currentLowest = nextLowest; 600 nextLowest = 0; 601 } 602 } 603 604 // Update mNetworkPreference according to user mannually first then overlay config.xml 605 mNetworkPreference = getPersistedNetworkPreference(); 606 if (mNetworkPreference == -1) { 607 for (int n : mPriorityList) { 608 if (mNetConfigs[n].isDefault() && ConnectivityManager.isNetworkTypeValid(n)) { 609 mNetworkPreference = n; 610 break; 611 } 612 } 613 if (mNetworkPreference == -1) { 614 throw new IllegalStateException( 615 "You should set at least one default Network in config.xml!"); 616 } 617 } 618 619 mNetRequestersPids = 620 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 621 for (int i : mPriorityList) { 622 mNetRequestersPids[i] = new ArrayList<Integer>(); 623 } 624 625 mFeatureUsers = new ArrayList<FeatureUser>(); 626 627 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 628 && SystemProperties.get("ro.build.type").equals("eng"); 629 630 // Create and start trackers for hard-coded networks 631 for (int targetNetworkType : mPriorityList) { 632 final NetworkConfig config = mNetConfigs[targetNetworkType]; 633 final NetworkStateTracker tracker; 634 try { 635 tracker = netFactory.createTracker(targetNetworkType, config); 636 mNetTrackers[targetNetworkType] = tracker; 637 } catch (IllegalArgumentException e) { 638 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 639 + " tracker: " + e); 640 continue; 641 } 642 643 tracker.startMonitoring(context, mTrackerHandler); 644 if (config.isDefault()) { 645 tracker.reconnect(); 646 } 647 } 648 649 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 650 651 //set up the listener for user state for creating user VPNs 652 IntentFilter intentFilter = new IntentFilter(); 653 intentFilter.addAction(Intent.ACTION_USER_STARTING); 654 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 655 mContext.registerReceiverAsUser( 656 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 657 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 658 659 try { 660 mNetd.registerObserver(mTethering); 661 mNetd.registerObserver(mDataActivityObserver); 662 mNetd.registerObserver(mClat); 663 } catch (RemoteException e) { 664 loge("Error registering observer :" + e); 665 } 666 667 if (DBG) { 668 mInetLog = new ArrayList(); 669 } 670 671 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 672 mSettingsObserver.observe(mContext); 673 674 mDataConnectionStats = new DataConnectionStats(mContext); 675 mDataConnectionStats.startMonitoring(); 676 677 // start network sampling .. 678 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 679 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 680 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 681 682 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 683 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 684 685 IntentFilter filter = new IntentFilter(); 686 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 687 mContext.registerReceiver( 688 new BroadcastReceiver() { 689 @Override 690 public void onReceive(Context context, Intent intent) { 691 String action = intent.getAction(); 692 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 693 mHandler.sendMessage(mHandler.obtainMessage 694 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 695 } 696 } 697 }, 698 new IntentFilter(filter)); 699 700 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 701 702 filter = new IntentFilter(); 703 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 704 mContext.registerReceiver(mProvisioningReceiver, filter); 705 706 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 707 } 708 709 /** 710 * Factory that creates {@link NetworkStateTracker} instances using given 711 * {@link NetworkConfig}. 712 */ 713 public interface NetworkFactory { 714 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 715 } 716 717 private static class DefaultNetworkFactory implements NetworkFactory { 718 private final Context mContext; 719 private final Handler mTrackerHandler; 720 721 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 722 mContext = context; 723 mTrackerHandler = trackerHandler; 724 } 725 726 @Override 727 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 728 switch (config.radio) { 729 case TYPE_WIFI: 730 return new WifiStateTracker(targetNetworkType, config.name); 731 case TYPE_MOBILE: 732 return new MobileDataStateTracker(targetNetworkType, config.name); 733 case TYPE_DUMMY: 734 return new DummyDataStateTracker(targetNetworkType, config.name); 735 case TYPE_BLUETOOTH: 736 return BluetoothTetheringDataTracker.getInstance(); 737 case TYPE_WIMAX: 738 return makeWimaxStateTracker(mContext, mTrackerHandler); 739 case TYPE_ETHERNET: 740 return EthernetDataTracker.getInstance(); 741 case TYPE_PROXY: 742 return new ProxyDataTracker(); 743 default: 744 throw new IllegalArgumentException( 745 "Trying to create a NetworkStateTracker for an unknown radio type: " 746 + config.radio); 747 } 748 } 749 } 750 751 /** 752 * Loads external WiMAX library and registers as system service, returning a 753 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 754 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 755 */ 756 private static NetworkStateTracker makeWimaxStateTracker( 757 Context context, Handler trackerHandler) { 758 // Initialize Wimax 759 DexClassLoader wimaxClassLoader; 760 Class wimaxStateTrackerClass = null; 761 Class wimaxServiceClass = null; 762 Class wimaxManagerClass; 763 String wimaxJarLocation; 764 String wimaxLibLocation; 765 String wimaxManagerClassName; 766 String wimaxServiceClassName; 767 String wimaxStateTrackerClassName; 768 769 NetworkStateTracker wimaxStateTracker = null; 770 771 boolean isWimaxEnabled = context.getResources().getBoolean( 772 com.android.internal.R.bool.config_wimaxEnabled); 773 774 if (isWimaxEnabled) { 775 try { 776 wimaxJarLocation = context.getResources().getString( 777 com.android.internal.R.string.config_wimaxServiceJarLocation); 778 wimaxLibLocation = context.getResources().getString( 779 com.android.internal.R.string.config_wimaxNativeLibLocation); 780 wimaxManagerClassName = context.getResources().getString( 781 com.android.internal.R.string.config_wimaxManagerClassname); 782 wimaxServiceClassName = context.getResources().getString( 783 com.android.internal.R.string.config_wimaxServiceClassname); 784 wimaxStateTrackerClassName = context.getResources().getString( 785 com.android.internal.R.string.config_wimaxStateTrackerClassname); 786 787 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 788 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 789 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 790 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 791 792 try { 793 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 794 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 795 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 796 } catch (ClassNotFoundException ex) { 797 loge("Exception finding Wimax classes: " + ex.toString()); 798 return null; 799 } 800 } catch(Resources.NotFoundException ex) { 801 loge("Wimax Resources does not exist!!! "); 802 return null; 803 } 804 805 try { 806 if (DBG) log("Starting Wimax Service... "); 807 808 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 809 (new Class[] {Context.class, Handler.class}); 810 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 811 context, trackerHandler); 812 813 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 814 (new Class[] {Context.class, wimaxStateTrackerClass}); 815 wmxSrvConst.setAccessible(true); 816 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 817 wmxSrvConst.setAccessible(false); 818 819 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 820 821 } catch(Exception ex) { 822 loge("Exception creating Wimax classes: " + ex.toString()); 823 return null; 824 } 825 } else { 826 loge("Wimax is not enabled or not added to the network attributes!!! "); 827 return null; 828 } 829 830 return wimaxStateTracker; 831 } 832 833 /** 834 * Sets the preferred network. 835 * @param preference the new preference 836 */ 837 public void setNetworkPreference(int preference) { 838 enforceChangePermission(); 839 840 mHandler.sendMessage( 841 mHandler.obtainMessage(EVENT_SET_NETWORK_PREFERENCE, preference, 0)); 842 } 843 844 public int getNetworkPreference() { 845 enforceAccessPermission(); 846 int preference; 847 synchronized(this) { 848 preference = mNetworkPreference; 849 } 850 return preference; 851 } 852 853 private void handleSetNetworkPreference(int preference) { 854 if (ConnectivityManager.isNetworkTypeValid(preference) && 855 mNetConfigs[preference] != null && 856 mNetConfigs[preference].isDefault()) { 857 if (mNetworkPreference != preference) { 858 final ContentResolver cr = mContext.getContentResolver(); 859 Settings.Global.putInt(cr, Settings.Global.NETWORK_PREFERENCE, preference); 860 synchronized(this) { 861 mNetworkPreference = preference; 862 } 863 enforcePreference(); 864 } 865 } 866 } 867 868 private int getConnectivityChangeDelay() { 869 final ContentResolver cr = mContext.getContentResolver(); 870 871 /** Check system properties for the default value then use secure settings value, if any. */ 872 int defaultDelay = SystemProperties.getInt( 873 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 874 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 875 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 876 defaultDelay); 877 } 878 879 private int getPersistedNetworkPreference() { 880 final ContentResolver cr = mContext.getContentResolver(); 881 882 final int networkPrefSetting = Settings.Global 883 .getInt(cr, Settings.Global.NETWORK_PREFERENCE, -1); 884 885 return networkPrefSetting; 886 } 887 888 /** 889 * Make the state of network connectivity conform to the preference settings 890 * In this method, we only tear down a non-preferred network. Establishing 891 * a connection to the preferred network is taken care of when we handle 892 * the disconnect event from the non-preferred network 893 * (see {@link #handleDisconnect(NetworkInfo)}). 894 */ 895 private void enforcePreference() { 896 if (mNetTrackers[mNetworkPreference].getNetworkInfo().isConnected()) 897 return; 898 899 if (!mNetTrackers[mNetworkPreference].isAvailable()) 900 return; 901 902 for (int t=0; t <= ConnectivityManager.MAX_RADIO_TYPE; t++) { 903 if (t != mNetworkPreference && mNetTrackers[t] != null && 904 mNetTrackers[t].getNetworkInfo().isConnected()) { 905 if (DBG) { 906 log("tearing down " + mNetTrackers[t].getNetworkInfo() + 907 " in enforcePreference"); 908 } 909 teardown(mNetTrackers[t]); 910 } 911 } 912 } 913 914 private boolean teardown(NetworkStateTracker netTracker) { 915 if (netTracker.teardown()) { 916 netTracker.setTeardownRequested(true); 917 return true; 918 } else { 919 return false; 920 } 921 } 922 923 /** 924 * Check if UID should be blocked from using the network represented by the 925 * given {@link NetworkStateTracker}. 926 */ 927 private boolean isNetworkBlocked(NetworkStateTracker tracker, int uid) { 928 final String iface = tracker.getLinkProperties().getInterfaceName(); 929 930 final boolean networkCostly; 931 final int uidRules; 932 synchronized (mRulesLock) { 933 networkCostly = mMeteredIfaces.contains(iface); 934 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 935 } 936 937 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 938 return true; 939 } 940 941 // no restrictive rules; network is visible 942 return false; 943 } 944 945 /** 946 * Return a filtered {@link NetworkInfo}, potentially marked 947 * {@link DetailedState#BLOCKED} based on 948 * {@link #isNetworkBlocked(NetworkStateTracker, int)}. 949 */ 950 private NetworkInfo getFilteredNetworkInfo(NetworkStateTracker tracker, int uid) { 951 NetworkInfo info = tracker.getNetworkInfo(); 952 if (isNetworkBlocked(tracker, uid)) { 953 // network is blocked; clone and override state 954 info = new NetworkInfo(info); 955 info.setDetailedState(DetailedState.BLOCKED, null, null); 956 } 957 if (mLockdownTracker != null) { 958 info = mLockdownTracker.augmentNetworkInfo(info); 959 } 960 return info; 961 } 962 963 /** 964 * Return NetworkInfo for the active (i.e., connected) network interface. 965 * It is assumed that at most one network is active at a time. If more 966 * than one is active, it is indeterminate which will be returned. 967 * @return the info for the active network, or {@code null} if none is 968 * active 969 */ 970 @Override 971 public NetworkInfo getActiveNetworkInfo() { 972 enforceAccessPermission(); 973 final int uid = Binder.getCallingUid(); 974 return getNetworkInfo(mActiveDefaultNetwork, uid); 975 } 976 977 /** 978 * Find the first Provisioning network. 979 * 980 * @return NetworkInfo or null if none. 981 */ 982 private NetworkInfo getProvisioningNetworkInfo() { 983 enforceAccessPermission(); 984 985 // Find the first Provisioning Network 986 NetworkInfo provNi = null; 987 for (NetworkInfo ni : getAllNetworkInfo()) { 988 if (ni.isConnectedToProvisioningNetwork()) { 989 provNi = ni; 990 break; 991 } 992 } 993 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 994 return provNi; 995 } 996 997 /** 998 * Find the first Provisioning network or the ActiveDefaultNetwork 999 * if there is no Provisioning network 1000 * 1001 * @return NetworkInfo or null if none. 1002 */ 1003 @Override 1004 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1005 enforceAccessPermission(); 1006 1007 NetworkInfo provNi = getProvisioningNetworkInfo(); 1008 if (provNi == null) { 1009 final int uid = Binder.getCallingUid(); 1010 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1011 } 1012 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1013 return provNi; 1014 } 1015 1016 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1017 enforceAccessPermission(); 1018 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1019 final NetworkStateTracker tracker = mNetTrackers[mActiveDefaultNetwork]; 1020 if (tracker != null) { 1021 return tracker.getNetworkInfo(); 1022 } 1023 } 1024 return null; 1025 } 1026 1027 @Override 1028 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1029 enforceConnectivityInternalPermission(); 1030 return getNetworkInfo(mActiveDefaultNetwork, uid); 1031 } 1032 1033 @Override 1034 public NetworkInfo getNetworkInfo(int networkType) { 1035 enforceAccessPermission(); 1036 final int uid = Binder.getCallingUid(); 1037 return getNetworkInfo(networkType, uid); 1038 } 1039 1040 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1041 NetworkInfo info = null; 1042 if (isNetworkTypeValid(networkType)) { 1043 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1044 if (tracker != null) { 1045 info = getFilteredNetworkInfo(tracker, uid); 1046 } 1047 } 1048 return info; 1049 } 1050 1051 @Override 1052 public NetworkInfo[] getAllNetworkInfo() { 1053 enforceAccessPermission(); 1054 final int uid = Binder.getCallingUid(); 1055 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1056 synchronized (mRulesLock) { 1057 for (NetworkStateTracker tracker : mNetTrackers) { 1058 if (tracker != null) { 1059 result.add(getFilteredNetworkInfo(tracker, uid)); 1060 } 1061 } 1062 } 1063 return result.toArray(new NetworkInfo[result.size()]); 1064 } 1065 1066 @Override 1067 public boolean isNetworkSupported(int networkType) { 1068 enforceAccessPermission(); 1069 return (isNetworkTypeValid(networkType) && (mNetTrackers[networkType] != null)); 1070 } 1071 1072 /** 1073 * Return LinkProperties for the active (i.e., connected) default 1074 * network interface. It is assumed that at most one default network 1075 * is active at a time. If more than one is active, it is indeterminate 1076 * which will be returned. 1077 * @return the ip properties for the active network, or {@code null} if 1078 * none is active 1079 */ 1080 @Override 1081 public LinkProperties getActiveLinkProperties() { 1082 return getLinkProperties(mActiveDefaultNetwork); 1083 } 1084 1085 @Override 1086 public LinkProperties getLinkProperties(int networkType) { 1087 enforceAccessPermission(); 1088 if (isNetworkTypeValid(networkType)) { 1089 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1090 if (tracker != null) { 1091 return tracker.getLinkProperties(); 1092 } 1093 } 1094 return null; 1095 } 1096 1097 @Override 1098 public NetworkState[] getAllNetworkState() { 1099 enforceAccessPermission(); 1100 final int uid = Binder.getCallingUid(); 1101 final ArrayList<NetworkState> result = Lists.newArrayList(); 1102 synchronized (mRulesLock) { 1103 for (NetworkStateTracker tracker : mNetTrackers) { 1104 if (tracker != null) { 1105 final NetworkInfo info = getFilteredNetworkInfo(tracker, uid); 1106 result.add(new NetworkState( 1107 info, tracker.getLinkProperties(), tracker.getLinkCapabilities())); 1108 } 1109 } 1110 } 1111 return result.toArray(new NetworkState[result.size()]); 1112 } 1113 1114 private NetworkState getNetworkStateUnchecked(int networkType) { 1115 if (isNetworkTypeValid(networkType)) { 1116 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1117 if (tracker != null) { 1118 return new NetworkState(tracker.getNetworkInfo(), tracker.getLinkProperties(), 1119 tracker.getLinkCapabilities()); 1120 } 1121 } 1122 return null; 1123 } 1124 1125 @Override 1126 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1127 enforceAccessPermission(); 1128 1129 final long token = Binder.clearCallingIdentity(); 1130 try { 1131 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1132 if (state != null) { 1133 try { 1134 return mPolicyManager.getNetworkQuotaInfo(state); 1135 } catch (RemoteException e) { 1136 } 1137 } 1138 return null; 1139 } finally { 1140 Binder.restoreCallingIdentity(token); 1141 } 1142 } 1143 1144 @Override 1145 public boolean isActiveNetworkMetered() { 1146 enforceAccessPermission(); 1147 final long token = Binder.clearCallingIdentity(); 1148 try { 1149 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1150 } finally { 1151 Binder.restoreCallingIdentity(token); 1152 } 1153 } 1154 1155 private boolean isNetworkMeteredUnchecked(int networkType) { 1156 final NetworkState state = getNetworkStateUnchecked(networkType); 1157 if (state != null) { 1158 try { 1159 return mPolicyManager.isNetworkMetered(state); 1160 } catch (RemoteException e) { 1161 } 1162 } 1163 return false; 1164 } 1165 1166 public boolean setRadios(boolean turnOn) { 1167 boolean result = true; 1168 enforceChangePermission(); 1169 for (NetworkStateTracker t : mNetTrackers) { 1170 if (t != null) result = t.setRadio(turnOn) && result; 1171 } 1172 return result; 1173 } 1174 1175 public boolean setRadio(int netType, boolean turnOn) { 1176 enforceChangePermission(); 1177 if (!ConnectivityManager.isNetworkTypeValid(netType)) { 1178 return false; 1179 } 1180 NetworkStateTracker tracker = mNetTrackers[netType]; 1181 return tracker != null && tracker.setRadio(turnOn); 1182 } 1183 1184 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1185 @Override 1186 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1187 int deviceType = Integer.parseInt(label); 1188 sendDataActivityBroadcast(deviceType, active, tsNanos); 1189 } 1190 }; 1191 1192 /** 1193 * Used to notice when the calling process dies so we can self-expire 1194 * 1195 * Also used to know if the process has cleaned up after itself when 1196 * our auto-expire timer goes off. The timer has a link to an object. 1197 * 1198 */ 1199 private class FeatureUser implements IBinder.DeathRecipient { 1200 int mNetworkType; 1201 String mFeature; 1202 IBinder mBinder; 1203 int mPid; 1204 int mUid; 1205 long mCreateTime; 1206 1207 FeatureUser(int type, String feature, IBinder binder) { 1208 super(); 1209 mNetworkType = type; 1210 mFeature = feature; 1211 mBinder = binder; 1212 mPid = getCallingPid(); 1213 mUid = getCallingUid(); 1214 mCreateTime = System.currentTimeMillis(); 1215 1216 try { 1217 mBinder.linkToDeath(this, 0); 1218 } catch (RemoteException e) { 1219 binderDied(); 1220 } 1221 } 1222 1223 void unlinkDeathRecipient() { 1224 mBinder.unlinkToDeath(this, 0); 1225 } 1226 1227 public void binderDied() { 1228 log("ConnectivityService FeatureUser binderDied(" + 1229 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1230 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1231 stopUsingNetworkFeature(this, false); 1232 } 1233 1234 public void expire() { 1235 if (VDBG) { 1236 log("ConnectivityService FeatureUser expire(" + 1237 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1238 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1239 } 1240 stopUsingNetworkFeature(this, false); 1241 } 1242 1243 public boolean isSameUser(FeatureUser u) { 1244 if (u == null) return false; 1245 1246 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1247 } 1248 1249 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1250 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1251 TextUtils.equals(mFeature, feature)) { 1252 return true; 1253 } 1254 return false; 1255 } 1256 1257 public String toString() { 1258 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1259 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1260 } 1261 } 1262 1263 // javadoc from interface 1264 public int startUsingNetworkFeature(int networkType, String feature, 1265 IBinder binder) { 1266 long startTime = 0; 1267 if (DBG) { 1268 startTime = SystemClock.elapsedRealtime(); 1269 } 1270 if (VDBG) { 1271 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1272 + Binder.getCallingUid()); 1273 } 1274 enforceChangePermission(); 1275 try { 1276 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1277 mNetConfigs[networkType] == null) { 1278 return PhoneConstants.APN_REQUEST_FAILED; 1279 } 1280 1281 FeatureUser f = new FeatureUser(networkType, feature, binder); 1282 1283 // TODO - move this into individual networktrackers 1284 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1285 1286 if (mLockdownEnabled) { 1287 // Since carrier APNs usually aren't available from VPN 1288 // endpoint, mark them as unavailable. 1289 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1290 } 1291 1292 if (mProtectedNetworks.contains(usedNetworkType)) { 1293 enforceConnectivityInternalPermission(); 1294 } 1295 1296 // if UID is restricted, don't allow them to bring up metered APNs 1297 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1298 final int uidRules; 1299 synchronized (mRulesLock) { 1300 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1301 } 1302 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1303 return PhoneConstants.APN_REQUEST_FAILED; 1304 } 1305 1306 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1307 if (network != null) { 1308 Integer currentPid = new Integer(getCallingPid()); 1309 if (usedNetworkType != networkType) { 1310 NetworkInfo ni = network.getNetworkInfo(); 1311 1312 if (ni.isAvailable() == false) { 1313 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1314 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1315 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1316 } else { 1317 // else make the attempt anyway - probably giving REQUEST_STARTED below 1318 if (DBG) { 1319 log("special network not available, but try anyway ni=" + 1320 ni.getTypeName()); 1321 } 1322 } 1323 } 1324 1325 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1326 1327 synchronized(this) { 1328 boolean addToList = true; 1329 if (restoreTimer < 0) { 1330 // In case there is no timer is specified for the feature, 1331 // make sure we don't add duplicate entry with the same request. 1332 for (FeatureUser u : mFeatureUsers) { 1333 if (u.isSameUser(f)) { 1334 // Duplicate user is found. Do not add. 1335 addToList = false; 1336 break; 1337 } 1338 } 1339 } 1340 1341 if (addToList) mFeatureUsers.add(f); 1342 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1343 // this gets used for per-pid dns when connected 1344 mNetRequestersPids[usedNetworkType].add(currentPid); 1345 } 1346 } 1347 1348 if (restoreTimer >= 0) { 1349 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1350 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1351 } 1352 1353 if ((ni.isConnectedOrConnecting() == true) && 1354 !network.isTeardownRequested()) { 1355 if (ni.isConnected() == true) { 1356 final long token = Binder.clearCallingIdentity(); 1357 try { 1358 // add the pid-specific dns 1359 handleDnsConfigurationChange(usedNetworkType); 1360 if (VDBG) log("special network already active"); 1361 } finally { 1362 Binder.restoreCallingIdentity(token); 1363 } 1364 return PhoneConstants.APN_ALREADY_ACTIVE; 1365 } 1366 if (VDBG) log("special network already connecting"); 1367 return PhoneConstants.APN_REQUEST_STARTED; 1368 } 1369 1370 // check if the radio in play can make another contact 1371 // assume if cannot for now 1372 1373 if (DBG) { 1374 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1375 feature); 1376 } 1377 if (network.reconnect()) { 1378 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1379 return PhoneConstants.APN_REQUEST_STARTED; 1380 } else { 1381 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1382 return PhoneConstants.APN_REQUEST_FAILED; 1383 } 1384 } else { 1385 // need to remember this unsupported request so we respond appropriately on stop 1386 synchronized(this) { 1387 mFeatureUsers.add(f); 1388 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1389 // this gets used for per-pid dns when connected 1390 mNetRequestersPids[usedNetworkType].add(currentPid); 1391 } 1392 } 1393 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1394 return -1; 1395 } 1396 } 1397 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1398 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1399 } finally { 1400 if (DBG) { 1401 final long execTime = SystemClock.elapsedRealtime() - startTime; 1402 if (execTime > 250) { 1403 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1404 } else { 1405 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1406 } 1407 } 1408 } 1409 } 1410 1411 // javadoc from interface 1412 public int stopUsingNetworkFeature(int networkType, String feature) { 1413 enforceChangePermission(); 1414 1415 int pid = getCallingPid(); 1416 int uid = getCallingUid(); 1417 1418 FeatureUser u = null; 1419 boolean found = false; 1420 1421 synchronized(this) { 1422 for (FeatureUser x : mFeatureUsers) { 1423 if (x.isSameUser(pid, uid, networkType, feature)) { 1424 u = x; 1425 found = true; 1426 break; 1427 } 1428 } 1429 } 1430 if (found && u != null) { 1431 if (VDBG) log("stopUsingNetworkFeature: X"); 1432 // stop regardless of how many other time this proc had called start 1433 return stopUsingNetworkFeature(u, true); 1434 } else { 1435 // none found! 1436 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1437 return 1; 1438 } 1439 } 1440 1441 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1442 int networkType = u.mNetworkType; 1443 String feature = u.mFeature; 1444 int pid = u.mPid; 1445 int uid = u.mUid; 1446 1447 NetworkStateTracker tracker = null; 1448 boolean callTeardown = false; // used to carry our decision outside of sync block 1449 1450 if (VDBG) { 1451 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1452 } 1453 1454 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1455 if (DBG) { 1456 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1457 ", net is invalid"); 1458 } 1459 return -1; 1460 } 1461 1462 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1463 // sync block 1464 synchronized(this) { 1465 // check if this process still has an outstanding start request 1466 if (!mFeatureUsers.contains(u)) { 1467 if (VDBG) { 1468 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1469 ", ignoring"); 1470 } 1471 return 1; 1472 } 1473 u.unlinkDeathRecipient(); 1474 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1475 // If we care about duplicate requests, check for that here. 1476 // 1477 // This is done to support the extension of a request - the app 1478 // can request we start the network feature again and renew the 1479 // auto-shutoff delay. Normal "stop" calls from the app though 1480 // do not pay attention to duplicate requests - in effect the 1481 // API does not refcount and a single stop will counter multiple starts. 1482 if (ignoreDups == false) { 1483 for (FeatureUser x : mFeatureUsers) { 1484 if (x.isSameUser(u)) { 1485 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1486 return 1; 1487 } 1488 } 1489 } 1490 1491 // TODO - move to individual network trackers 1492 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1493 1494 tracker = mNetTrackers[usedNetworkType]; 1495 if (tracker == null) { 1496 if (DBG) { 1497 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1498 " no known tracker for used net type " + usedNetworkType); 1499 } 1500 return -1; 1501 } 1502 if (usedNetworkType != networkType) { 1503 Integer currentPid = new Integer(pid); 1504 mNetRequestersPids[usedNetworkType].remove(currentPid); 1505 1506 final long token = Binder.clearCallingIdentity(); 1507 try { 1508 reassessPidDns(pid, true); 1509 } finally { 1510 Binder.restoreCallingIdentity(token); 1511 } 1512 flushVmDnsCache(); 1513 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1514 if (VDBG) { 1515 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1516 " others still using it"); 1517 } 1518 return 1; 1519 } 1520 callTeardown = true; 1521 } else { 1522 if (DBG) { 1523 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1524 " not a known feature - dropping"); 1525 } 1526 } 1527 } 1528 1529 if (callTeardown) { 1530 if (DBG) { 1531 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1532 } 1533 tracker.teardown(); 1534 return 1; 1535 } else { 1536 return -1; 1537 } 1538 } 1539 1540 /** 1541 * Check if the address falls into any of currently running VPN's route's. 1542 */ 1543 private boolean isAddressUnderVpn(InetAddress address) { 1544 synchronized (mVpns) { 1545 synchronized (mRoutesLock) { 1546 int uid = UserHandle.getCallingUserId(); 1547 Vpn vpn = mVpns.get(uid); 1548 if (vpn == null) { 1549 return false; 1550 } 1551 1552 // Check if an exemption exists for this address. 1553 for (LinkAddress destination : mExemptAddresses) { 1554 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1555 continue; 1556 } 1557 1558 int prefix = destination.getNetworkPrefixLength(); 1559 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1560 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1561 prefix); 1562 1563 if (addrMasked.equals(destMasked)) { 1564 return false; 1565 } 1566 } 1567 1568 // Finally check if the address is covered by the VPN. 1569 return vpn.isAddressCovered(address); 1570 } 1571 } 1572 } 1573 1574 /** 1575 * @deprecated use requestRouteToHostAddress instead 1576 * 1577 * Ensure that a network route exists to deliver traffic to the specified 1578 * host via the specified network interface. 1579 * @param networkType the type of the network over which traffic to the 1580 * specified host is to be routed 1581 * @param hostAddress the IP address of the host to which the route is 1582 * desired 1583 * @return {@code true} on success, {@code false} on failure 1584 */ 1585 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1586 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1587 1588 if (inetAddress == null) { 1589 return false; 1590 } 1591 1592 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1593 } 1594 1595 /** 1596 * Ensure that a network route exists to deliver traffic to the specified 1597 * host via the specified network interface. 1598 * @param networkType the type of the network over which traffic to the 1599 * specified host is to be routed 1600 * @param hostAddress the IP address of the host to which the route is 1601 * desired 1602 * @return {@code true} on success, {@code false} on failure 1603 */ 1604 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1605 String packageName) { 1606 enforceChangePermission(); 1607 if (mProtectedNetworks.contains(networkType)) { 1608 enforceConnectivityInternalPermission(); 1609 } 1610 boolean exempt; 1611 InetAddress addr; 1612 try { 1613 addr = InetAddress.getByAddress(hostAddress); 1614 } catch (UnknownHostException e) { 1615 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1616 return false; 1617 } 1618 // System apps may request routes bypassing the VPN to keep other networks working. 1619 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1620 exempt = true; 1621 } else { 1622 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1623 try { 1624 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1625 0); 1626 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1627 } catch (NameNotFoundException e) { 1628 throw new IllegalArgumentException("Failed to find calling package details", e); 1629 } 1630 } 1631 1632 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1633 // This can be either because the VPN's routes do not cover the destination or a 1634 // system application added an exemption that covers this destination. 1635 if (!exempt && isAddressUnderVpn(addr)) { 1636 return false; 1637 } 1638 1639 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1640 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1641 return false; 1642 } 1643 NetworkStateTracker tracker = mNetTrackers[networkType]; 1644 DetailedState netState = DetailedState.DISCONNECTED; 1645 if (tracker != null) { 1646 netState = tracker.getNetworkInfo().getDetailedState(); 1647 } 1648 1649 if ((netState != DetailedState.CONNECTED && 1650 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1651 tracker.isTeardownRequested()) { 1652 if (VDBG) { 1653 log("requestRouteToHostAddress on down network " 1654 + "(" + networkType + ") - dropped" 1655 + " tracker=" + tracker 1656 + " netState=" + netState 1657 + " isTeardownRequested=" 1658 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1659 } 1660 return false; 1661 } 1662 final long token = Binder.clearCallingIdentity(); 1663 try { 1664 LinkProperties lp = tracker.getLinkProperties(); 1665 boolean ok = addRouteToAddress(lp, addr, exempt); 1666 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1667 return ok; 1668 } finally { 1669 Binder.restoreCallingIdentity(token); 1670 } 1671 } 1672 1673 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1674 boolean exempt) { 1675 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt); 1676 } 1677 1678 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable) { 1679 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT); 1680 } 1681 1682 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt) { 1683 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt); 1684 } 1685 1686 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr) { 1687 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT); 1688 } 1689 1690 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1691 boolean toDefaultTable, boolean exempt) { 1692 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1693 if (bestRoute == null) { 1694 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1695 } else { 1696 String iface = bestRoute.getInterface(); 1697 if (bestRoute.getGateway().equals(addr)) { 1698 // if there is no better route, add the implied hostroute for our gateway 1699 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1700 } else { 1701 // if we will connect to this through another route, add a direct route 1702 // to it's gateway 1703 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1704 } 1705 } 1706 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt); 1707 } 1708 1709 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1710 boolean toDefaultTable, boolean exempt) { 1711 if ((lp == null) || (r == null)) { 1712 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1713 return false; 1714 } 1715 1716 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1717 loge("Error modifying route - too much recursion"); 1718 return false; 1719 } 1720 1721 String ifaceName = r.getInterface(); 1722 if(ifaceName == null) { 1723 loge("Error modifying route - no interface name"); 1724 return false; 1725 } 1726 if (r.hasGateway()) { 1727 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1728 if (bestRoute != null) { 1729 if (bestRoute.getGateway().equals(r.getGateway())) { 1730 // if there is no better route, add the implied hostroute for our gateway 1731 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1732 } else { 1733 // if we will connect to our gateway through another route, add a direct 1734 // route to it's gateway 1735 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1736 bestRoute.getGateway(), 1737 ifaceName); 1738 } 1739 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt); 1740 } 1741 } 1742 if (doAdd) { 1743 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1744 try { 1745 if (toDefaultTable) { 1746 synchronized (mRoutesLock) { 1747 // only track default table - only one apps can effect 1748 mAddedRoutes.add(r); 1749 mNetd.addRoute(ifaceName, r); 1750 if (exempt) { 1751 LinkAddress dest = r.getDestination(); 1752 if (!mExemptAddresses.contains(dest)) { 1753 mNetd.setHostExemption(dest); 1754 mExemptAddresses.add(dest); 1755 } 1756 } 1757 } 1758 } else { 1759 mNetd.addSecondaryRoute(ifaceName, r); 1760 } 1761 } catch (Exception e) { 1762 // never crash - catch them all 1763 if (DBG) loge("Exception trying to add a route: " + e); 1764 return false; 1765 } 1766 } else { 1767 // if we remove this one and there are no more like it, then refcount==0 and 1768 // we can remove it from the table 1769 if (toDefaultTable) { 1770 synchronized (mRoutesLock) { 1771 mAddedRoutes.remove(r); 1772 if (mAddedRoutes.contains(r) == false) { 1773 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1774 try { 1775 mNetd.removeRoute(ifaceName, r); 1776 LinkAddress dest = r.getDestination(); 1777 if (mExemptAddresses.contains(dest)) { 1778 mNetd.clearHostExemption(dest); 1779 mExemptAddresses.remove(dest); 1780 } 1781 } catch (Exception e) { 1782 // never crash - catch them all 1783 if (VDBG) loge("Exception trying to remove a route: " + e); 1784 return false; 1785 } 1786 } else { 1787 if (VDBG) log("not removing " + r + " as it's still in use"); 1788 } 1789 } 1790 } else { 1791 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1792 try { 1793 mNetd.removeSecondaryRoute(ifaceName, r); 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 } 1800 } 1801 return true; 1802 } 1803 1804 /** 1805 * @see ConnectivityManager#getMobileDataEnabled() 1806 */ 1807 public boolean getMobileDataEnabled() { 1808 // TODO: This detail should probably be in DataConnectionTracker's 1809 // which is where we store the value and maybe make this 1810 // asynchronous. 1811 enforceAccessPermission(); 1812 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1813 Settings.Global.MOBILE_DATA, 1) == 1; 1814 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1815 return retVal; 1816 } 1817 1818 public void setDataDependency(int networkType, boolean met) { 1819 enforceConnectivityInternalPermission(); 1820 1821 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1822 (met ? ENABLED : DISABLED), networkType)); 1823 } 1824 1825 private void handleSetDependencyMet(int networkType, boolean met) { 1826 if (mNetTrackers[networkType] != null) { 1827 if (DBG) { 1828 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1829 } 1830 mNetTrackers[networkType].setDependencyMet(met); 1831 } 1832 } 1833 1834 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1835 @Override 1836 public void onUidRulesChanged(int uid, int uidRules) { 1837 // caller is NPMS, since we only register with them 1838 if (LOGD_RULES) { 1839 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1840 } 1841 1842 synchronized (mRulesLock) { 1843 // skip update when we've already applied rules 1844 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1845 if (oldRules == uidRules) return; 1846 1847 mUidRules.put(uid, uidRules); 1848 } 1849 1850 // TODO: notify UID when it has requested targeted updates 1851 } 1852 1853 @Override 1854 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1855 // caller is NPMS, since we only register with them 1856 if (LOGD_RULES) { 1857 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1858 } 1859 1860 synchronized (mRulesLock) { 1861 mMeteredIfaces.clear(); 1862 for (String iface : meteredIfaces) { 1863 mMeteredIfaces.add(iface); 1864 } 1865 } 1866 } 1867 1868 @Override 1869 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1870 // caller is NPMS, since we only register with them 1871 if (LOGD_RULES) { 1872 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1873 } 1874 1875 // kick off connectivity change broadcast for active network, since 1876 // global background policy change is radical. 1877 final int networkType = mActiveDefaultNetwork; 1878 if (isNetworkTypeValid(networkType)) { 1879 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1880 if (tracker != null) { 1881 final NetworkInfo info = tracker.getNetworkInfo(); 1882 if (info != null && info.isConnected()) { 1883 sendConnectedBroadcast(info); 1884 } 1885 } 1886 } 1887 } 1888 }; 1889 1890 /** 1891 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1892 */ 1893 public void setMobileDataEnabled(boolean enabled) { 1894 enforceChangePermission(); 1895 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1896 1897 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1898 (enabled ? ENABLED : DISABLED), 0)); 1899 } 1900 1901 private void handleSetMobileData(boolean enabled) { 1902 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1903 if (VDBG) { 1904 log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1905 } 1906 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled); 1907 } 1908 if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) { 1909 if (VDBG) { 1910 log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled); 1911 } 1912 mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled); 1913 } 1914 } 1915 1916 @Override 1917 public void setPolicyDataEnable(int networkType, boolean enabled) { 1918 // only someone like NPMS should only be calling us 1919 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1920 1921 mHandler.sendMessage(mHandler.obtainMessage( 1922 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1923 } 1924 1925 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1926 if (isNetworkTypeValid(networkType)) { 1927 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1928 if (tracker != null) { 1929 tracker.setPolicyDataEnable(enabled); 1930 } 1931 } 1932 } 1933 1934 private void enforceAccessPermission() { 1935 mContext.enforceCallingOrSelfPermission( 1936 android.Manifest.permission.ACCESS_NETWORK_STATE, 1937 "ConnectivityService"); 1938 } 1939 1940 private void enforceChangePermission() { 1941 mContext.enforceCallingOrSelfPermission( 1942 android.Manifest.permission.CHANGE_NETWORK_STATE, 1943 "ConnectivityService"); 1944 } 1945 1946 // TODO Make this a special check when it goes public 1947 private void enforceTetherChangePermission() { 1948 mContext.enforceCallingOrSelfPermission( 1949 android.Manifest.permission.CHANGE_NETWORK_STATE, 1950 "ConnectivityService"); 1951 } 1952 1953 private void enforceTetherAccessPermission() { 1954 mContext.enforceCallingOrSelfPermission( 1955 android.Manifest.permission.ACCESS_NETWORK_STATE, 1956 "ConnectivityService"); 1957 } 1958 1959 private void enforceConnectivityInternalPermission() { 1960 mContext.enforceCallingOrSelfPermission( 1961 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1962 "ConnectivityService"); 1963 } 1964 1965 private void enforceMarkNetworkSocketPermission() { 1966 //Media server special case 1967 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1968 return; 1969 } 1970 mContext.enforceCallingOrSelfPermission( 1971 android.Manifest.permission.MARK_NETWORK_SOCKET, 1972 "ConnectivityService"); 1973 } 1974 1975 /** 1976 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1977 * network, we ignore it. If it is for the active network, we send out a 1978 * broadcast. But first, we check whether it might be possible to connect 1979 * to a different network. 1980 * @param info the {@code NetworkInfo} for the network 1981 */ 1982 private void handleDisconnect(NetworkInfo info) { 1983 1984 int prevNetType = info.getType(); 1985 1986 mNetTrackers[prevNetType].setTeardownRequested(false); 1987 1988 // Remove idletimer previously setup in {@code handleConnect} 1989 if (mNetConfigs[prevNetType].isDefault()) { 1990 removeDataActivityTracking(prevNetType); 1991 } 1992 1993 /* 1994 * If the disconnected network is not the active one, then don't report 1995 * this as a loss of connectivity. What probably happened is that we're 1996 * getting the disconnect for a network that we explicitly disabled 1997 * in accordance with network preference policies. 1998 */ 1999 if (!mNetConfigs[prevNetType].isDefault()) { 2000 List<Integer> pids = mNetRequestersPids[prevNetType]; 2001 for (Integer pid : pids) { 2002 // will remove them because the net's no longer connected 2003 // need to do this now as only now do we know the pids and 2004 // can properly null things that are no longer referenced. 2005 reassessPidDns(pid.intValue(), false); 2006 } 2007 } 2008 2009 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2010 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2011 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2012 if (info.isFailover()) { 2013 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2014 info.setFailover(false); 2015 } 2016 if (info.getReason() != null) { 2017 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2018 } 2019 if (info.getExtraInfo() != null) { 2020 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2021 info.getExtraInfo()); 2022 } 2023 2024 if (mNetConfigs[prevNetType].isDefault()) { 2025 tryFailover(prevNetType); 2026 if (mActiveDefaultNetwork != -1) { 2027 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2028 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2029 } else { 2030 mDefaultInetConditionPublished = 0; // we're not connected anymore 2031 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2032 } 2033 } 2034 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2035 2036 // Reset interface if no other connections are using the same interface 2037 boolean doReset = true; 2038 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2039 if (linkProperties != null) { 2040 String oldIface = linkProperties.getInterfaceName(); 2041 if (TextUtils.isEmpty(oldIface) == false) { 2042 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2043 if (networkStateTracker == null) continue; 2044 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2045 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2046 LinkProperties l = networkStateTracker.getLinkProperties(); 2047 if (l == null) continue; 2048 if (oldIface.equals(l.getInterfaceName())) { 2049 doReset = false; 2050 break; 2051 } 2052 } 2053 } 2054 } 2055 } 2056 2057 // do this before we broadcast the change 2058 handleConnectivityChange(prevNetType, doReset); 2059 2060 final Intent immediateIntent = new Intent(intent); 2061 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2062 sendStickyBroadcast(immediateIntent); 2063 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2064 /* 2065 * If the failover network is already connected, then immediately send 2066 * out a followup broadcast indicating successful failover 2067 */ 2068 if (mActiveDefaultNetwork != -1) { 2069 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2070 getConnectivityChangeDelay()); 2071 } 2072 } 2073 2074 private void tryFailover(int prevNetType) { 2075 /* 2076 * If this is a default network, check if other defaults are available. 2077 * Try to reconnect on all available and let them hash it out when 2078 * more than one connects. 2079 */ 2080 if (mNetConfigs[prevNetType].isDefault()) { 2081 if (mActiveDefaultNetwork == prevNetType) { 2082 if (DBG) { 2083 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2084 } 2085 mActiveDefaultNetwork = -1; 2086 } 2087 2088 // don't signal a reconnect for anything lower or equal priority than our 2089 // current connected default 2090 // TODO - don't filter by priority now - nice optimization but risky 2091// int currentPriority = -1; 2092// if (mActiveDefaultNetwork != -1) { 2093// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2094// } 2095 2096 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2097 if (checkType == prevNetType) continue; 2098 if (mNetConfigs[checkType] == null) continue; 2099 if (!mNetConfigs[checkType].isDefault()) continue; 2100 if (mNetTrackers[checkType] == null) continue; 2101 2102// Enabling the isAvailable() optimization caused mobile to not get 2103// selected if it was in the middle of error handling. Specifically 2104// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2105// would not be available and we wouldn't get connected to anything. 2106// So removing the isAvailable() optimization below for now. TODO: This 2107// optimization should work and we need to investigate why it doesn't work. 2108// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2109// complete before it is really complete. 2110 2111// if (!mNetTrackers[checkType].isAvailable()) continue; 2112 2113// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2114 2115 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2116 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2117 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2118 checkInfo.setFailover(true); 2119 checkTracker.reconnect(); 2120 } 2121 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2122 } 2123 } 2124 } 2125 2126 public void sendConnectedBroadcast(NetworkInfo info) { 2127 enforceConnectivityInternalPermission(); 2128 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2129 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2130 } 2131 2132 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2133 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2134 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2135 } 2136 2137 private void sendInetConditionBroadcast(NetworkInfo info) { 2138 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2139 } 2140 2141 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2142 if (mLockdownTracker != null) { 2143 info = mLockdownTracker.augmentNetworkInfo(info); 2144 } 2145 2146 Intent intent = new Intent(bcastType); 2147 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2148 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2149 if (info.isFailover()) { 2150 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2151 info.setFailover(false); 2152 } 2153 if (info.getReason() != null) { 2154 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2155 } 2156 if (info.getExtraInfo() != null) { 2157 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2158 info.getExtraInfo()); 2159 } 2160 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2161 return intent; 2162 } 2163 2164 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2165 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2166 } 2167 2168 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2169 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2170 } 2171 2172 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2173 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2174 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2175 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2176 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2177 final long ident = Binder.clearCallingIdentity(); 2178 try { 2179 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2180 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2181 } finally { 2182 Binder.restoreCallingIdentity(ident); 2183 } 2184 } 2185 2186 /** 2187 * Called when an attempt to fail over to another network has failed. 2188 * @param info the {@link NetworkInfo} for the failed network 2189 */ 2190 private void handleConnectionFailure(NetworkInfo info) { 2191 mNetTrackers[info.getType()].setTeardownRequested(false); 2192 2193 String reason = info.getReason(); 2194 String extraInfo = info.getExtraInfo(); 2195 2196 String reasonText; 2197 if (reason == null) { 2198 reasonText = "."; 2199 } else { 2200 reasonText = " (" + reason + ")."; 2201 } 2202 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 2203 2204 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2205 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2206 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2207 if (getActiveNetworkInfo() == null) { 2208 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2209 } 2210 if (reason != null) { 2211 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 2212 } 2213 if (extraInfo != null) { 2214 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 2215 } 2216 if (info.isFailover()) { 2217 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2218 info.setFailover(false); 2219 } 2220 2221 if (mNetConfigs[info.getType()].isDefault()) { 2222 tryFailover(info.getType()); 2223 if (mActiveDefaultNetwork != -1) { 2224 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2225 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2226 } else { 2227 mDefaultInetConditionPublished = 0; 2228 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2229 } 2230 } 2231 2232 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2233 2234 final Intent immediateIntent = new Intent(intent); 2235 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2236 sendStickyBroadcast(immediateIntent); 2237 sendStickyBroadcast(intent); 2238 /* 2239 * If the failover network is already connected, then immediately send 2240 * out a followup broadcast indicating successful failover 2241 */ 2242 if (mActiveDefaultNetwork != -1) { 2243 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 2244 } 2245 } 2246 2247 private void sendStickyBroadcast(Intent intent) { 2248 synchronized(this) { 2249 if (!mSystemReady) { 2250 mInitialBroadcast = new Intent(intent); 2251 } 2252 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2253 if (VDBG) { 2254 log("sendStickyBroadcast: action=" + intent.getAction()); 2255 } 2256 2257 final long ident = Binder.clearCallingIdentity(); 2258 try { 2259 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2260 } finally { 2261 Binder.restoreCallingIdentity(ident); 2262 } 2263 } 2264 } 2265 2266 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2267 if (delayMs <= 0) { 2268 sendStickyBroadcast(intent); 2269 } else { 2270 if (VDBG) { 2271 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2272 + intent.getAction()); 2273 } 2274 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2275 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2276 } 2277 } 2278 2279 void systemReady() { 2280 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2281 loadGlobalProxy(); 2282 2283 synchronized(this) { 2284 mSystemReady = true; 2285 if (mInitialBroadcast != null) { 2286 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2287 mInitialBroadcast = null; 2288 } 2289 } 2290 // load the global proxy at startup 2291 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2292 2293 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2294 // for user to unlock device. 2295 if (!updateLockdownVpn()) { 2296 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2297 mContext.registerReceiver(mUserPresentReceiver, filter); 2298 } 2299 } 2300 2301 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2302 @Override 2303 public void onReceive(Context context, Intent intent) { 2304 // Try creating lockdown tracker, since user present usually means 2305 // unlocked keystore. 2306 if (updateLockdownVpn()) { 2307 mContext.unregisterReceiver(this); 2308 } 2309 } 2310 }; 2311 2312 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2313 if (((type != mNetworkPreference) 2314 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2315 || (mNetworkPreference == mActiveDefaultNetwork)) { 2316 return false; 2317 } 2318 return true; 2319 } 2320 2321 private void handleConnect(NetworkInfo info) { 2322 final int newNetType = info.getType(); 2323 2324 // snapshot isFailover, because sendConnectedBroadcast() resets it 2325 boolean isFailover = info.isFailover(); 2326 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2327 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2328 2329 if (VDBG) { 2330 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2331 + " isFailover" + isFailover); 2332 } 2333 2334 // if this is a default net and other default is running 2335 // kill the one not preferred 2336 if (mNetConfigs[newNetType].isDefault()) { 2337 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2338 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2339 // tear down the other 2340 NetworkStateTracker otherNet = 2341 mNetTrackers[mActiveDefaultNetwork]; 2342 if (DBG) { 2343 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2344 " teardown"); 2345 } 2346 if (!teardown(otherNet)) { 2347 loge("Network declined teardown request"); 2348 teardown(thisNet); 2349 return; 2350 } 2351 } else { 2352 // don't accept this one 2353 if (VDBG) { 2354 log("Not broadcasting CONNECT_ACTION " + 2355 "to torn down network " + info.getTypeName()); 2356 } 2357 teardown(thisNet); 2358 return; 2359 } 2360 } 2361 setupDataActivityTracking(newNetType); 2362 synchronized (ConnectivityService.this) { 2363 // have a new default network, release the transition wakelock in a second 2364 // if it's held. The second pause is to allow apps to reconnect over the 2365 // new network 2366 if (mNetTransitionWakeLock.isHeld()) { 2367 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2368 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2369 mNetTransitionWakeLockSerialNumber, 0), 2370 1000); 2371 } 2372 } 2373 mActiveDefaultNetwork = newNetType; 2374 // this will cause us to come up initially as unconnected and switching 2375 // to connected after our normal pause unless somebody reports us as reall 2376 // disconnected 2377 mDefaultInetConditionPublished = 0; 2378 mDefaultConnectionSequence++; 2379 mInetConditionChangeInFlight = false; 2380 // Don't do this - if we never sign in stay, grey 2381 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2382 updateNetworkSettings(thisNet); 2383 } 2384 thisNet.setTeardownRequested(false); 2385 updateMtuSizeSettings(thisNet); 2386 handleConnectivityChange(newNetType, false); 2387 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2388 2389 // notify battery stats service about this network 2390 if (thisIface != null) { 2391 try { 2392 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2393 } catch (RemoteException e) { 2394 // ignored; service lives in system_server 2395 } 2396 } 2397 } 2398 2399 /** @hide */ 2400 @Override 2401 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2402 enforceConnectivityInternalPermission(); 2403 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2404 mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2405 } 2406 2407 /** 2408 * Setup data activity tracking for the given network interface. 2409 * 2410 * Every {@code setupDataActivityTracking} should be paired with a 2411 * {@link #removeDataActivityTracking} for cleanup. 2412 */ 2413 private void setupDataActivityTracking(int type) { 2414 final NetworkStateTracker thisNet = mNetTrackers[type]; 2415 final String iface = thisNet.getLinkProperties().getInterfaceName(); 2416 2417 final int timeout; 2418 2419 if (ConnectivityManager.isNetworkTypeMobile(type)) { 2420 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2421 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2422 5); 2423 // Canonicalize mobile network type 2424 type = ConnectivityManager.TYPE_MOBILE; 2425 } else if (ConnectivityManager.TYPE_WIFI == type) { 2426 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2427 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2428 0); 2429 } else { 2430 // do not track any other networks 2431 timeout = 0; 2432 } 2433 2434 if (timeout > 0 && iface != null) { 2435 try { 2436 mNetd.addIdleTimer(iface, timeout, type); 2437 } catch (Exception e) { 2438 // You shall not crash! 2439 loge("Exception in setupDataActivityTracking " + e); 2440 } 2441 } 2442 } 2443 2444 /** 2445 * Remove data activity tracking when network disconnects. 2446 */ 2447 private void removeDataActivityTracking(int type) { 2448 final NetworkStateTracker net = mNetTrackers[type]; 2449 final String iface = net.getLinkProperties().getInterfaceName(); 2450 2451 if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) || 2452 ConnectivityManager.TYPE_WIFI == type)) { 2453 try { 2454 // the call fails silently if no idletimer setup for this interface 2455 mNetd.removeIdleTimer(iface); 2456 } catch (Exception e) { 2457 loge("Exception in removeDataActivityTracking " + e); 2458 } 2459 } 2460 } 2461 2462 /** 2463 * After a change in the connectivity state of a network. We're mainly 2464 * concerned with making sure that the list of DNS servers is set up 2465 * according to which networks are connected, and ensuring that the 2466 * right routing table entries exist. 2467 */ 2468 private void handleConnectivityChange(int netType, boolean doReset) { 2469 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2470 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2471 if (VDBG) { 2472 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2473 + " resetMask=" + resetMask); 2474 } 2475 2476 /* 2477 * If a non-default network is enabled, add the host routes that 2478 * will allow it's DNS servers to be accessed. 2479 */ 2480 handleDnsConfigurationChange(netType); 2481 2482 LinkProperties curLp = mCurrentLinkProperties[netType]; 2483 LinkProperties newLp = null; 2484 2485 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2486 newLp = mNetTrackers[netType].getLinkProperties(); 2487 if (VDBG) { 2488 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2489 " doReset=" + doReset + " resetMask=" + resetMask + 2490 "\n curLp=" + curLp + 2491 "\n newLp=" + newLp); 2492 } 2493 2494 if (curLp != null) { 2495 if (curLp.isIdenticalInterfaceName(newLp)) { 2496 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2497 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2498 for (LinkAddress linkAddr : car.removed) { 2499 if (linkAddr.getAddress() instanceof Inet4Address) { 2500 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2501 } 2502 if (linkAddr.getAddress() instanceof Inet6Address) { 2503 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2504 } 2505 } 2506 if (DBG) { 2507 log("handleConnectivityChange: addresses changed" + 2508 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2509 "\n car=" + car); 2510 } 2511 } else { 2512 if (VDBG) { 2513 log("handleConnectivityChange: addresses are the same reset per" + 2514 " doReset linkProperty[" + netType + "]:" + 2515 " resetMask=" + resetMask); 2516 } 2517 } 2518 } else { 2519 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2520 if (DBG) { 2521 log("handleConnectivityChange: interface not not equivalent reset both" + 2522 " linkProperty[" + netType + "]:" + 2523 " resetMask=" + resetMask); 2524 } 2525 } 2526 } 2527 if (mNetConfigs[netType].isDefault()) { 2528 handleApplyDefaultProxy(newLp.getHttpProxy()); 2529 } 2530 } else { 2531 if (VDBG) { 2532 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2533 " doReset=" + doReset + " resetMask=" + resetMask + 2534 "\n curLp=" + curLp + 2535 "\n newLp= null"); 2536 } 2537 } 2538 mCurrentLinkProperties[netType] = newLp; 2539 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt); 2540 2541 if (resetMask != 0 || resetDns) { 2542 if (VDBG) log("handleConnectivityChange: resetting"); 2543 if (curLp != null) { 2544 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2545 for (String iface : curLp.getAllInterfaceNames()) { 2546 if (TextUtils.isEmpty(iface) == false) { 2547 if (resetMask != 0) { 2548 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2549 NetworkUtils.resetConnections(iface, resetMask); 2550 2551 // Tell VPN the interface is down. It is a temporary 2552 // but effective fix to make VPN aware of the change. 2553 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2554 synchronized(mVpns) { 2555 for (int i = 0; i < mVpns.size(); i++) { 2556 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2557 } 2558 } 2559 } 2560 } 2561 if (resetDns) { 2562 flushVmDnsCache(); 2563 if (VDBG) log("resetting DNS cache for " + iface); 2564 try { 2565 mNetd.flushInterfaceDnsCache(iface); 2566 } catch (Exception e) { 2567 // never crash - catch them all 2568 if (DBG) loge("Exception resetting dns cache: " + e); 2569 } 2570 } 2571 } else { 2572 loge("Can't reset connection for type "+netType); 2573 } 2574 } 2575 } 2576 } 2577 2578 // Update 464xlat state. 2579 NetworkStateTracker tracker = mNetTrackers[netType]; 2580 if (mClat.requiresClat(netType, tracker)) { 2581 2582 // If the connection was previously using clat, but is not using it now, stop the clat 2583 // daemon. Normally, this happens automatically when the connection disconnects, but if 2584 // the disconnect is not reported, or if the connection's LinkProperties changed for 2585 // some other reason (e.g., handoff changes the IP addresses on the link), it would 2586 // still be running. If it's not running, then stopping it is a no-op. 2587 if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) { 2588 mClat.stopClat(); 2589 } 2590 // If the link requires clat to be running, then start the daemon now. 2591 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2592 mClat.startClat(tracker); 2593 } else { 2594 mClat.stopClat(); 2595 } 2596 } 2597 2598 // TODO: Temporary notifying upstread change to Tethering. 2599 // @see bug/4455071 2600 /** Notify TetheringService if interface name has been changed. */ 2601 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2602 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2603 if (isTetheringSupported()) { 2604 mTethering.handleTetherIfaceChange(); 2605 } 2606 } 2607 } 2608 2609 /** 2610 * Add and remove routes using the old properties (null if not previously connected), 2611 * new properties (null if becoming disconnected). May even be double null, which 2612 * is a noop. 2613 * Uses isLinkDefault to determine if default routes should be set or conversely if 2614 * host routes should be set to the dns servers 2615 * returns a boolean indicating the routes changed 2616 */ 2617 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2618 boolean isLinkDefault, boolean exempt) { 2619 Collection<RouteInfo> routesToAdd = null; 2620 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2621 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2622 if (curLp != null) { 2623 // check for the delta between the current set and the new 2624 routeDiff = curLp.compareAllRoutes(newLp); 2625 dnsDiff = curLp.compareDnses(newLp); 2626 } else if (newLp != null) { 2627 routeDiff.added = newLp.getAllRoutes(); 2628 dnsDiff.added = newLp.getDnses(); 2629 } 2630 2631 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2632 2633 for (RouteInfo r : routeDiff.removed) { 2634 if (isLinkDefault || ! r.isDefaultRoute()) { 2635 if (VDBG) log("updateRoutes: default remove route r=" + r); 2636 removeRoute(curLp, r, TO_DEFAULT_TABLE); 2637 } 2638 if (isLinkDefault == false) { 2639 // remove from a secondary route table 2640 removeRoute(curLp, r, TO_SECONDARY_TABLE); 2641 } 2642 } 2643 2644 if (!isLinkDefault) { 2645 // handle DNS routes 2646 if (routesChanged) { 2647 // routes changed - remove all old dns entries and add new 2648 if (curLp != null) { 2649 for (InetAddress oldDns : curLp.getDnses()) { 2650 removeRouteToAddress(curLp, oldDns); 2651 } 2652 } 2653 if (newLp != null) { 2654 for (InetAddress newDns : newLp.getDnses()) { 2655 addRouteToAddress(newLp, newDns, exempt); 2656 } 2657 } 2658 } else { 2659 // no change in routes, check for change in dns themselves 2660 for (InetAddress oldDns : dnsDiff.removed) { 2661 removeRouteToAddress(curLp, oldDns); 2662 } 2663 for (InetAddress newDns : dnsDiff.added) { 2664 addRouteToAddress(newLp, newDns, exempt); 2665 } 2666 } 2667 } 2668 2669 for (RouteInfo r : routeDiff.added) { 2670 if (isLinkDefault || ! r.isDefaultRoute()) { 2671 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt); 2672 } else { 2673 // add to a secondary route table 2674 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT); 2675 2676 // many radios add a default route even when we don't want one. 2677 // remove the default route unless somebody else has asked for it 2678 String ifaceName = newLp.getInterfaceName(); 2679 synchronized (mRoutesLock) { 2680 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2681 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2682 try { 2683 mNetd.removeRoute(ifaceName, r); 2684 } catch (Exception e) { 2685 // never crash - catch them all 2686 if (DBG) loge("Exception trying to remove a route: " + e); 2687 } 2688 } 2689 } 2690 } 2691 } 2692 2693 return routesChanged; 2694 } 2695 2696 /** 2697 * Reads the network specific MTU size from reources. 2698 * and set it on it's iface. 2699 */ 2700 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2701 final String iface = nt.getLinkProperties().getInterfaceName(); 2702 final int mtu = nt.getLinkProperties().getMtu(); 2703 2704 if (mtu < 68 || mtu > 10000) { 2705 loge("Unexpected mtu value: " + mtu + ", " + nt); 2706 return; 2707 } 2708 2709 try { 2710 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2711 mNetd.setMtu(iface, mtu); 2712 } catch (Exception e) { 2713 Slog.e(TAG, "exception in setMtu()" + e); 2714 } 2715 } 2716 2717 /** 2718 * Reads the network specific TCP buffer sizes from SystemProperties 2719 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2720 * wide use 2721 */ 2722 private void updateNetworkSettings(NetworkStateTracker nt) { 2723 String key = nt.getTcpBufferSizesPropName(); 2724 String bufferSizes = key == null ? null : SystemProperties.get(key); 2725 2726 if (TextUtils.isEmpty(bufferSizes)) { 2727 if (VDBG) log(key + " not found in system properties. Using defaults"); 2728 2729 // Setting to default values so we won't be stuck to previous values 2730 key = "net.tcp.buffersize.default"; 2731 bufferSizes = SystemProperties.get(key); 2732 } 2733 2734 // Set values in kernel 2735 if (bufferSizes.length() != 0) { 2736 if (VDBG) { 2737 log("Setting TCP values: [" + bufferSizes 2738 + "] which comes from [" + key + "]"); 2739 } 2740 setBufferSize(bufferSizes); 2741 } 2742 2743 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2744 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2745 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2746 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2747 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2748 if (rwndValue != 0) { 2749 SystemProperties.set(sysctlKey, rwndValue.toString()); 2750 } 2751 } 2752 2753 /** 2754 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2755 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2756 * 2757 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2758 * writeMin, writeInitial, writeMax" 2759 */ 2760 private void setBufferSize(String bufferSizes) { 2761 try { 2762 String[] values = bufferSizes.split(","); 2763 2764 if (values.length == 6) { 2765 final String prefix = "/sys/kernel/ipv4/tcp_"; 2766 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2767 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2768 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2769 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2770 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2771 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2772 } else { 2773 loge("Invalid buffersize string: " + bufferSizes); 2774 } 2775 } catch (IOException e) { 2776 loge("Can't set tcp buffer sizes:" + e); 2777 } 2778 } 2779 2780 /** 2781 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2782 * on the highest priority active net which this process requested. 2783 * If there aren't any, clear it out 2784 */ 2785 private void reassessPidDns(int pid, boolean doBump) 2786 { 2787 if (VDBG) log("reassessPidDns for pid " + pid); 2788 Integer myPid = new Integer(pid); 2789 for(int i : mPriorityList) { 2790 if (mNetConfigs[i].isDefault()) { 2791 continue; 2792 } 2793 NetworkStateTracker nt = mNetTrackers[i]; 2794 if (nt.getNetworkInfo().isConnected() && 2795 !nt.isTeardownRequested()) { 2796 LinkProperties p = nt.getLinkProperties(); 2797 if (p == null) continue; 2798 if (mNetRequestersPids[i].contains(myPid)) { 2799 try { 2800 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2801 } catch (Exception e) { 2802 Slog.e(TAG, "exception reasseses pid dns: " + e); 2803 } 2804 return; 2805 } 2806 } 2807 } 2808 // nothing found - delete 2809 try { 2810 mNetd.clearDnsInterfaceForPid(pid); 2811 } catch (Exception e) { 2812 Slog.e(TAG, "exception clear interface from pid: " + e); 2813 } 2814 } 2815 2816 private void flushVmDnsCache() { 2817 /* 2818 * Tell the VMs to toss their DNS caches 2819 */ 2820 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2821 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2822 /* 2823 * Connectivity events can happen before boot has completed ... 2824 */ 2825 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2826 final long ident = Binder.clearCallingIdentity(); 2827 try { 2828 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2829 } finally { 2830 Binder.restoreCallingIdentity(ident); 2831 } 2832 } 2833 2834 // Caller must grab mDnsLock. 2835 private void updateDnsLocked(String network, String iface, 2836 Collection<InetAddress> dnses, String domains, boolean defaultDns) { 2837 int last = 0; 2838 if (dnses.size() == 0 && mDefaultDns != null) { 2839 dnses = new ArrayList(); 2840 dnses.add(mDefaultDns); 2841 if (DBG) { 2842 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2843 } 2844 } 2845 2846 try { 2847 mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains); 2848 if (defaultDns) { 2849 mNetd.setDefaultInterfaceForDns(iface); 2850 } 2851 2852 for (InetAddress dns : dnses) { 2853 ++last; 2854 String key = "net.dns" + last; 2855 String value = dns.getHostAddress(); 2856 SystemProperties.set(key, value); 2857 } 2858 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2859 String key = "net.dns" + i; 2860 SystemProperties.set(key, ""); 2861 } 2862 mNumDnsEntries = last; 2863 } catch (Exception e) { 2864 loge("exception setting default dns interface: " + e); 2865 } 2866 } 2867 2868 private void handleDnsConfigurationChange(int netType) { 2869 // add default net's dns entries 2870 NetworkStateTracker nt = mNetTrackers[netType]; 2871 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2872 LinkProperties p = nt.getLinkProperties(); 2873 if (p == null) return; 2874 Collection<InetAddress> dnses = p.getDnses(); 2875 if (mNetConfigs[netType].isDefault()) { 2876 String network = nt.getNetworkInfo().getTypeName(); 2877 synchronized (mDnsLock) { 2878 updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true); 2879 } 2880 } else { 2881 try { 2882 mNetd.setDnsServersForInterface(p.getInterfaceName(), 2883 NetworkUtils.makeStrings(dnses), p.getDomains()); 2884 } catch (Exception e) { 2885 if (DBG) loge("exception setting dns servers: " + e); 2886 } 2887 // set per-pid dns for attached secondary nets 2888 List<Integer> pids = mNetRequestersPids[netType]; 2889 for (Integer pid : pids) { 2890 try { 2891 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2892 } catch (Exception e) { 2893 Slog.e(TAG, "exception setting interface for pid: " + e); 2894 } 2895 } 2896 } 2897 flushVmDnsCache(); 2898 } 2899 } 2900 2901 private int getRestoreDefaultNetworkDelay(int networkType) { 2902 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2903 NETWORK_RESTORE_DELAY_PROP_NAME); 2904 if(restoreDefaultNetworkDelayStr != null && 2905 restoreDefaultNetworkDelayStr.length() != 0) { 2906 try { 2907 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2908 } catch (NumberFormatException e) { 2909 } 2910 } 2911 // if the system property isn't set, use the value for the apn type 2912 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2913 2914 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2915 (mNetConfigs[networkType] != null)) { 2916 ret = mNetConfigs[networkType].restoreTime; 2917 } 2918 return ret; 2919 } 2920 2921 @Override 2922 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2923 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2924 if (mContext.checkCallingOrSelfPermission( 2925 android.Manifest.permission.DUMP) 2926 != PackageManager.PERMISSION_GRANTED) { 2927 pw.println("Permission Denial: can't dump ConnectivityService " + 2928 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2929 Binder.getCallingUid()); 2930 return; 2931 } 2932 2933 // TODO: add locking to get atomic snapshot 2934 pw.println(); 2935 for (int i = 0; i < mNetTrackers.length; i++) { 2936 final NetworkStateTracker nst = mNetTrackers[i]; 2937 if (nst != null) { 2938 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 2939 pw.increaseIndent(); 2940 if (nst.getNetworkInfo().isConnected()) { 2941 pw.println("Active network: " + nst.getNetworkInfo(). 2942 getTypeName()); 2943 } 2944 pw.println(nst.getNetworkInfo()); 2945 pw.println(nst.getLinkProperties()); 2946 pw.println(nst); 2947 pw.println(); 2948 pw.decreaseIndent(); 2949 } 2950 } 2951 2952 pw.print("Active default network: "); pw.println(getNetworkTypeName(mActiveDefaultNetwork)); 2953 pw.println(); 2954 2955 pw.println("Network Requester Pids:"); 2956 pw.increaseIndent(); 2957 for (int net : mPriorityList) { 2958 String pidString = net + ": "; 2959 for (Integer pid : mNetRequestersPids[net]) { 2960 pidString = pidString + pid.toString() + ", "; 2961 } 2962 pw.println(pidString); 2963 } 2964 pw.println(); 2965 pw.decreaseIndent(); 2966 2967 pw.println("FeatureUsers:"); 2968 pw.increaseIndent(); 2969 for (Object requester : mFeatureUsers) { 2970 pw.println(requester.toString()); 2971 } 2972 pw.println(); 2973 pw.decreaseIndent(); 2974 2975 synchronized (this) { 2976 pw.println("NetworkTranstionWakeLock is currently " + 2977 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2978 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2979 } 2980 pw.println(); 2981 2982 mTethering.dump(fd, pw, args); 2983 2984 if (mInetLog != null) { 2985 pw.println(); 2986 pw.println("Inet condition reports:"); 2987 pw.increaseIndent(); 2988 for(int i = 0; i < mInetLog.size(); i++) { 2989 pw.println(mInetLog.get(i)); 2990 } 2991 pw.decreaseIndent(); 2992 } 2993 } 2994 2995 // must be stateless - things change under us. 2996 private class NetworkStateTrackerHandler extends Handler { 2997 public NetworkStateTrackerHandler(Looper looper) { 2998 super(looper); 2999 } 3000 3001 @Override 3002 public void handleMessage(Message msg) { 3003 NetworkInfo info; 3004 switch (msg.what) { 3005 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3006 info = (NetworkInfo) msg.obj; 3007 NetworkInfo.State state = info.getState(); 3008 3009 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3010 (state == NetworkInfo.State.DISCONNECTED) || 3011 (state == NetworkInfo.State.SUSPENDED)) { 3012 log("ConnectivityChange for " + 3013 info.getTypeName() + ": " + 3014 state + "/" + info.getDetailedState()); 3015 } 3016 3017 // Since mobile has the notion of a network/apn that can be used for 3018 // provisioning we need to check every time we're connected as 3019 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3020 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3021 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3022 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3023 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3024 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3025 Settings.Global.DEVICE_PROVISIONED, 0)) 3026 && (((state == NetworkInfo.State.CONNECTED) 3027 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3028 || info.isConnectedToProvisioningNetwork())) { 3029 log("ConnectivityChange checkMobileProvisioning for" 3030 + " TYPE_MOBILE or ProvisioningNetwork"); 3031 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3032 } 3033 3034 EventLogTags.writeConnectivityStateChanged( 3035 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3036 3037 if (info.getDetailedState() == 3038 NetworkInfo.DetailedState.FAILED) { 3039 handleConnectionFailure(info); 3040 } else if (info.isConnectedToProvisioningNetwork()) { 3041 /** 3042 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3043 * for now its an in between network, its a network that 3044 * is actually a default network but we don't want it to be 3045 * announced as such to keep background applications from 3046 * trying to use it. It turns out that some still try so we 3047 * take the additional step of clearing any default routes 3048 * to the link that may have incorrectly setup by the lower 3049 * levels. 3050 */ 3051 LinkProperties lp = getLinkProperties(info.getType()); 3052 if (DBG) { 3053 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3054 } 3055 3056 // Clear any default routes setup by the radio so 3057 // any activity by applications trying to use this 3058 // connection will fail until the provisioning network 3059 // is enabled. 3060 for (RouteInfo r : lp.getRoutes()) { 3061 removeRoute(lp, r, TO_DEFAULT_TABLE); 3062 } 3063 } else if (state == NetworkInfo.State.DISCONNECTED) { 3064 handleDisconnect(info); 3065 } else if (state == NetworkInfo.State.SUSPENDED) { 3066 // TODO: need to think this over. 3067 // the logic here is, handle SUSPENDED the same as 3068 // DISCONNECTED. The only difference being we are 3069 // broadcasting an intent with NetworkInfo that's 3070 // suspended. This allows the applications an 3071 // opportunity to handle DISCONNECTED and SUSPENDED 3072 // differently, or not. 3073 handleDisconnect(info); 3074 } else if (state == NetworkInfo.State.CONNECTED) { 3075 handleConnect(info); 3076 } 3077 if (mLockdownTracker != null) { 3078 mLockdownTracker.onNetworkInfoChanged(info); 3079 } 3080 break; 3081 } 3082 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3083 info = (NetworkInfo) msg.obj; 3084 // TODO: Temporary allowing network configuration 3085 // change not resetting sockets. 3086 // @see bug/4455071 3087 handleConnectivityChange(info.getType(), false); 3088 break; 3089 } 3090 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3091 info = (NetworkInfo) msg.obj; 3092 int type = info.getType(); 3093 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3094 break; 3095 } 3096 } 3097 } 3098 } 3099 3100 private class InternalHandler extends Handler { 3101 public InternalHandler(Looper looper) { 3102 super(looper); 3103 } 3104 3105 @Override 3106 public void handleMessage(Message msg) { 3107 NetworkInfo info; 3108 switch (msg.what) { 3109 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3110 String causedBy = null; 3111 synchronized (ConnectivityService.this) { 3112 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3113 mNetTransitionWakeLock.isHeld()) { 3114 mNetTransitionWakeLock.release(); 3115 causedBy = mNetTransitionWakeLockCausedBy; 3116 } 3117 } 3118 if (causedBy != null) { 3119 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3120 } 3121 break; 3122 } 3123 case EVENT_RESTORE_DEFAULT_NETWORK: { 3124 FeatureUser u = (FeatureUser)msg.obj; 3125 u.expire(); 3126 break; 3127 } 3128 case EVENT_INET_CONDITION_CHANGE: { 3129 int netType = msg.arg1; 3130 int condition = msg.arg2; 3131 handleInetConditionChange(netType, condition); 3132 break; 3133 } 3134 case EVENT_INET_CONDITION_HOLD_END: { 3135 int netType = msg.arg1; 3136 int sequence = msg.arg2; 3137 handleInetConditionHoldEnd(netType, sequence); 3138 break; 3139 } 3140 case EVENT_SET_NETWORK_PREFERENCE: { 3141 int preference = msg.arg1; 3142 handleSetNetworkPreference(preference); 3143 break; 3144 } 3145 case EVENT_SET_MOBILE_DATA: { 3146 boolean enabled = (msg.arg1 == ENABLED); 3147 handleSetMobileData(enabled); 3148 break; 3149 } 3150 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3151 handleDeprecatedGlobalHttpProxy(); 3152 break; 3153 } 3154 case EVENT_SET_DEPENDENCY_MET: { 3155 boolean met = (msg.arg1 == ENABLED); 3156 handleSetDependencyMet(msg.arg2, met); 3157 break; 3158 } 3159 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3160 Intent intent = (Intent)msg.obj; 3161 sendStickyBroadcast(intent); 3162 break; 3163 } 3164 case EVENT_SET_POLICY_DATA_ENABLE: { 3165 final int networkType = msg.arg1; 3166 final boolean enabled = msg.arg2 == ENABLED; 3167 handleSetPolicyDataEnable(networkType, enabled); 3168 break; 3169 } 3170 case EVENT_VPN_STATE_CHANGED: { 3171 if (mLockdownTracker != null) { 3172 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3173 } 3174 break; 3175 } 3176 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3177 int tag = mEnableFailFastMobileDataTag.get(); 3178 if (msg.arg1 == tag) { 3179 MobileDataStateTracker mobileDst = 3180 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3181 if (mobileDst != null) { 3182 mobileDst.setEnableFailFastMobileData(msg.arg2); 3183 } 3184 } else { 3185 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3186 + " != tag:" + tag); 3187 } 3188 break; 3189 } 3190 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3191 handleNetworkSamplingTimeout(); 3192 break; 3193 } 3194 case EVENT_PROXY_HAS_CHANGED: { 3195 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3196 break; 3197 } 3198 } 3199 } 3200 } 3201 3202 // javadoc from interface 3203 public int tether(String iface) { 3204 enforceTetherChangePermission(); 3205 3206 if (isTetheringSupported()) { 3207 return mTethering.tether(iface); 3208 } else { 3209 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3210 } 3211 } 3212 3213 // javadoc from interface 3214 public int untether(String iface) { 3215 enforceTetherChangePermission(); 3216 3217 if (isTetheringSupported()) { 3218 return mTethering.untether(iface); 3219 } else { 3220 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3221 } 3222 } 3223 3224 // javadoc from interface 3225 public int getLastTetherError(String iface) { 3226 enforceTetherAccessPermission(); 3227 3228 if (isTetheringSupported()) { 3229 return mTethering.getLastTetherError(iface); 3230 } else { 3231 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3232 } 3233 } 3234 3235 // TODO - proper iface API for selection by property, inspection, etc 3236 public String[] getTetherableUsbRegexs() { 3237 enforceTetherAccessPermission(); 3238 if (isTetheringSupported()) { 3239 return mTethering.getTetherableUsbRegexs(); 3240 } else { 3241 return new String[0]; 3242 } 3243 } 3244 3245 public String[] getTetherableWifiRegexs() { 3246 enforceTetherAccessPermission(); 3247 if (isTetheringSupported()) { 3248 return mTethering.getTetherableWifiRegexs(); 3249 } else { 3250 return new String[0]; 3251 } 3252 } 3253 3254 public String[] getTetherableBluetoothRegexs() { 3255 enforceTetherAccessPermission(); 3256 if (isTetheringSupported()) { 3257 return mTethering.getTetherableBluetoothRegexs(); 3258 } else { 3259 return new String[0]; 3260 } 3261 } 3262 3263 public int setUsbTethering(boolean enable) { 3264 enforceTetherChangePermission(); 3265 if (isTetheringSupported()) { 3266 return mTethering.setUsbTethering(enable); 3267 } else { 3268 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3269 } 3270 } 3271 3272 // TODO - move iface listing, queries, etc to new module 3273 // javadoc from interface 3274 public String[] getTetherableIfaces() { 3275 enforceTetherAccessPermission(); 3276 return mTethering.getTetherableIfaces(); 3277 } 3278 3279 public String[] getTetheredIfaces() { 3280 enforceTetherAccessPermission(); 3281 return mTethering.getTetheredIfaces(); 3282 } 3283 3284 public String[] getTetheringErroredIfaces() { 3285 enforceTetherAccessPermission(); 3286 return mTethering.getErroredIfaces(); 3287 } 3288 3289 // if ro.tether.denied = true we default to no tethering 3290 // gservices could set the secure setting to 1 though to enable it on a build where it 3291 // had previously been turned off. 3292 public boolean isTetheringSupported() { 3293 enforceTetherAccessPermission(); 3294 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3295 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3296 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3297 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3298 mTethering.getTetherableWifiRegexs().length != 0 || 3299 mTethering.getTetherableBluetoothRegexs().length != 0) && 3300 mTethering.getUpstreamIfaceTypes().length != 0); 3301 } 3302 3303 // An API NetworkStateTrackers can call when they lose their network. 3304 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3305 // whichever happens first. The timer is started by the first caller and not 3306 // restarted by subsequent callers. 3307 public void requestNetworkTransitionWakelock(String forWhom) { 3308 enforceConnectivityInternalPermission(); 3309 synchronized (this) { 3310 if (mNetTransitionWakeLock.isHeld()) return; 3311 mNetTransitionWakeLockSerialNumber++; 3312 mNetTransitionWakeLock.acquire(); 3313 mNetTransitionWakeLockCausedBy = forWhom; 3314 } 3315 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3316 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3317 mNetTransitionWakeLockSerialNumber, 0), 3318 mNetTransitionWakeLockTimeout); 3319 return; 3320 } 3321 3322 // 100 percent is full good, 0 is full bad. 3323 public void reportInetCondition(int networkType, int percentage) { 3324 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3325 mContext.enforceCallingOrSelfPermission( 3326 android.Manifest.permission.STATUS_BAR, 3327 "ConnectivityService"); 3328 3329 if (DBG) { 3330 int pid = getCallingPid(); 3331 int uid = getCallingUid(); 3332 String s = pid + "(" + uid + ") reports inet is " + 3333 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3334 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3335 mInetLog.add(s); 3336 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3337 mInetLog.remove(0); 3338 } 3339 } 3340 mHandler.sendMessage(mHandler.obtainMessage( 3341 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3342 } 3343 3344 private void handleInetConditionChange(int netType, int condition) { 3345 if (mActiveDefaultNetwork == -1) { 3346 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3347 return; 3348 } 3349 if (mActiveDefaultNetwork != netType) { 3350 if (DBG) log("handleInetConditionChange: net=" + netType + 3351 " != default=" + mActiveDefaultNetwork + " - ignore"); 3352 return; 3353 } 3354 if (VDBG) { 3355 log("handleInetConditionChange: net=" + 3356 netType + ", condition=" + condition + 3357 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3358 } 3359 mDefaultInetCondition = condition; 3360 int delay; 3361 if (mInetConditionChangeInFlight == false) { 3362 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3363 // setup a new hold to debounce this 3364 if (mDefaultInetCondition > 50) { 3365 delay = Settings.Global.getInt(mContext.getContentResolver(), 3366 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3367 } else { 3368 delay = Settings.Global.getInt(mContext.getContentResolver(), 3369 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3370 } 3371 mInetConditionChangeInFlight = true; 3372 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3373 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3374 } else { 3375 // we've set the new condition, when this hold ends that will get picked up 3376 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3377 } 3378 } 3379 3380 private void handleInetConditionHoldEnd(int netType, int sequence) { 3381 if (DBG) { 3382 log("handleInetConditionHoldEnd: net=" + netType + 3383 ", condition=" + mDefaultInetCondition + 3384 ", published condition=" + mDefaultInetConditionPublished); 3385 } 3386 mInetConditionChangeInFlight = false; 3387 3388 if (mActiveDefaultNetwork == -1) { 3389 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3390 return; 3391 } 3392 if (mDefaultConnectionSequence != sequence) { 3393 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3394 return; 3395 } 3396 // TODO: Figure out why this optimization sometimes causes a 3397 // change in mDefaultInetCondition to be missed and the 3398 // UI to not be updated. 3399 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3400 // if (DBG) log("no change in condition - aborting"); 3401 // return; 3402 //} 3403 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3404 if (networkInfo.isConnected() == false) { 3405 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3406 return; 3407 } 3408 mDefaultInetConditionPublished = mDefaultInetCondition; 3409 sendInetConditionBroadcast(networkInfo); 3410 return; 3411 } 3412 3413 public ProxyInfo getProxy() { 3414 // this information is already available as a world read/writable jvm property 3415 // so this API change wouldn't have a benifit. It also breaks the passing 3416 // of proxy info to all the JVMs. 3417 // enforceAccessPermission(); 3418 synchronized (mProxyLock) { 3419 ProxyInfo ret = mGlobalProxy; 3420 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3421 return ret; 3422 } 3423 } 3424 3425 public void setGlobalProxy(ProxyInfo proxyProperties) { 3426 enforceConnectivityInternalPermission(); 3427 3428 synchronized (mProxyLock) { 3429 if (proxyProperties == mGlobalProxy) return; 3430 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3431 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3432 3433 String host = ""; 3434 int port = 0; 3435 String exclList = ""; 3436 String pacFileUrl = ""; 3437 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3438 (proxyProperties.getPacFileUrl() != null))) { 3439 if (!proxyProperties.isValid()) { 3440 if (DBG) 3441 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3442 return; 3443 } 3444 mGlobalProxy = new ProxyInfo(proxyProperties); 3445 host = mGlobalProxy.getHost(); 3446 port = mGlobalProxy.getPort(); 3447 exclList = mGlobalProxy.getExclusionListAsString(); 3448 if (proxyProperties.getPacFileUrl() != null) { 3449 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3450 } 3451 } else { 3452 mGlobalProxy = null; 3453 } 3454 ContentResolver res = mContext.getContentResolver(); 3455 final long token = Binder.clearCallingIdentity(); 3456 try { 3457 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3458 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3459 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3460 exclList); 3461 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3462 } finally { 3463 Binder.restoreCallingIdentity(token); 3464 } 3465 } 3466 3467 if (mGlobalProxy == null) { 3468 proxyProperties = mDefaultProxy; 3469 } 3470 sendProxyBroadcast(proxyProperties); 3471 } 3472 3473 private void loadGlobalProxy() { 3474 ContentResolver res = mContext.getContentResolver(); 3475 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3476 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3477 String exclList = Settings.Global.getString(res, 3478 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3479 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3480 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3481 ProxyInfo proxyProperties; 3482 if (!TextUtils.isEmpty(pacFileUrl)) { 3483 proxyProperties = new ProxyInfo(pacFileUrl); 3484 } else { 3485 proxyProperties = new ProxyInfo(host, port, exclList); 3486 } 3487 if (!proxyProperties.isValid()) { 3488 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3489 return; 3490 } 3491 3492 synchronized (mProxyLock) { 3493 mGlobalProxy = proxyProperties; 3494 } 3495 } 3496 } 3497 3498 public ProxyInfo getGlobalProxy() { 3499 // this information is already available as a world read/writable jvm property 3500 // so this API change wouldn't have a benifit. It also breaks the passing 3501 // of proxy info to all the JVMs. 3502 // enforceAccessPermission(); 3503 synchronized (mProxyLock) { 3504 return mGlobalProxy; 3505 } 3506 } 3507 3508 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3509 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3510 && (proxy.getPacFileUrl() == null)) { 3511 proxy = null; 3512 } 3513 synchronized (mProxyLock) { 3514 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3515 if (mDefaultProxy == proxy) return; // catches repeated nulls 3516 if (proxy != null && !proxy.isValid()) { 3517 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3518 return; 3519 } 3520 mDefaultProxy = proxy; 3521 3522 if (mGlobalProxy != null) return; 3523 if (!mDefaultProxyDisabled) { 3524 sendProxyBroadcast(proxy); 3525 } 3526 } 3527 } 3528 3529 private void handleDeprecatedGlobalHttpProxy() { 3530 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3531 Settings.Global.HTTP_PROXY); 3532 if (!TextUtils.isEmpty(proxy)) { 3533 String data[] = proxy.split(":"); 3534 if (data.length == 0) { 3535 return; 3536 } 3537 3538 String proxyHost = data[0]; 3539 int proxyPort = 8080; 3540 if (data.length > 1) { 3541 try { 3542 proxyPort = Integer.parseInt(data[1]); 3543 } catch (NumberFormatException e) { 3544 return; 3545 } 3546 } 3547 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3548 setGlobalProxy(p); 3549 } 3550 } 3551 3552 private void sendProxyBroadcast(ProxyInfo proxy) { 3553 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3554 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3555 if (DBG) log("sending Proxy Broadcast for " + proxy); 3556 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3557 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3558 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3559 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3560 final long ident = Binder.clearCallingIdentity(); 3561 try { 3562 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3563 } finally { 3564 Binder.restoreCallingIdentity(ident); 3565 } 3566 } 3567 3568 private static class SettingsObserver extends ContentObserver { 3569 private int mWhat; 3570 private Handler mHandler; 3571 SettingsObserver(Handler handler, int what) { 3572 super(handler); 3573 mHandler = handler; 3574 mWhat = what; 3575 } 3576 3577 void observe(Context context) { 3578 ContentResolver resolver = context.getContentResolver(); 3579 resolver.registerContentObserver(Settings.Global.getUriFor( 3580 Settings.Global.HTTP_PROXY), false, this); 3581 } 3582 3583 @Override 3584 public void onChange(boolean selfChange) { 3585 mHandler.obtainMessage(mWhat).sendToTarget(); 3586 } 3587 } 3588 3589 private static void log(String s) { 3590 Slog.d(TAG, s); 3591 } 3592 3593 private static void loge(String s) { 3594 Slog.e(TAG, s); 3595 } 3596 3597 int convertFeatureToNetworkType(int networkType, String feature) { 3598 int usedNetworkType = networkType; 3599 3600 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3601 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3602 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3603 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3604 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3605 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3606 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3607 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3608 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3609 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3610 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3611 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3612 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3613 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3614 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3615 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3616 } else { 3617 Slog.e(TAG, "Can't match any mobile netTracker!"); 3618 } 3619 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3620 if (TextUtils.equals(feature, "p2p")) { 3621 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3622 } else { 3623 Slog.e(TAG, "Can't match any wifi netTracker!"); 3624 } 3625 } else { 3626 Slog.e(TAG, "Unexpected network type"); 3627 } 3628 return usedNetworkType; 3629 } 3630 3631 private static <T> T checkNotNull(T value, String message) { 3632 if (value == null) { 3633 throw new NullPointerException(message); 3634 } 3635 return value; 3636 } 3637 3638 /** 3639 * Protect a socket from VPN routing rules. This method is used by 3640 * VpnBuilder and not available in ConnectivityManager. Permissions 3641 * are checked in Vpn class. 3642 * @hide 3643 */ 3644 @Override 3645 public boolean protectVpn(ParcelFileDescriptor socket) { 3646 throwIfLockdownEnabled(); 3647 try { 3648 int type = mActiveDefaultNetwork; 3649 int user = UserHandle.getUserId(Binder.getCallingUid()); 3650 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3651 synchronized(mVpns) { 3652 mVpns.get(user).protect(socket); 3653 } 3654 return true; 3655 } 3656 } catch (Exception e) { 3657 // ignore 3658 } finally { 3659 try { 3660 socket.close(); 3661 } catch (Exception e) { 3662 // ignore 3663 } 3664 } 3665 return false; 3666 } 3667 3668 /** 3669 * Prepare for a VPN application. This method is used by VpnDialogs 3670 * and not available in ConnectivityManager. Permissions are checked 3671 * in Vpn class. 3672 * @hide 3673 */ 3674 @Override 3675 public boolean prepareVpn(String oldPackage, String newPackage) { 3676 throwIfLockdownEnabled(); 3677 int user = UserHandle.getUserId(Binder.getCallingUid()); 3678 synchronized(mVpns) { 3679 return mVpns.get(user).prepare(oldPackage, newPackage); 3680 } 3681 } 3682 3683 @Override 3684 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3685 enforceMarkNetworkSocketPermission(); 3686 final long token = Binder.clearCallingIdentity(); 3687 try { 3688 int mark = mNetd.getMarkForUid(uid); 3689 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3690 if (mark == -1) { 3691 mark = 0; 3692 } 3693 NetworkUtils.markSocket(socket.getFd(), mark); 3694 } catch (RemoteException e) { 3695 } finally { 3696 Binder.restoreCallingIdentity(token); 3697 } 3698 } 3699 3700 /** 3701 * Configure a TUN interface and return its file descriptor. Parameters 3702 * are encoded and opaque to this class. This method is used by VpnBuilder 3703 * and not available in ConnectivityManager. Permissions are checked in 3704 * Vpn class. 3705 * @hide 3706 */ 3707 @Override 3708 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3709 throwIfLockdownEnabled(); 3710 int user = UserHandle.getUserId(Binder.getCallingUid()); 3711 synchronized(mVpns) { 3712 return mVpns.get(user).establish(config); 3713 } 3714 } 3715 3716 /** 3717 * Start legacy VPN, controlling native daemons as needed. Creates a 3718 * secondary thread to perform connection work, returning quickly. 3719 */ 3720 @Override 3721 public void startLegacyVpn(VpnProfile profile) { 3722 throwIfLockdownEnabled(); 3723 final LinkProperties egress = getActiveLinkProperties(); 3724 if (egress == null) { 3725 throw new IllegalStateException("Missing active network connection"); 3726 } 3727 int user = UserHandle.getUserId(Binder.getCallingUid()); 3728 synchronized(mVpns) { 3729 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3730 } 3731 } 3732 3733 /** 3734 * Return the information of the ongoing legacy VPN. This method is used 3735 * by VpnSettings and not available in ConnectivityManager. Permissions 3736 * are checked in Vpn class. 3737 * @hide 3738 */ 3739 @Override 3740 public LegacyVpnInfo getLegacyVpnInfo() { 3741 throwIfLockdownEnabled(); 3742 int user = UserHandle.getUserId(Binder.getCallingUid()); 3743 synchronized(mVpns) { 3744 return mVpns.get(user).getLegacyVpnInfo(); 3745 } 3746 } 3747 3748 /** 3749 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3750 * not available in ConnectivityManager. 3751 * Permissions are checked in Vpn class. 3752 * @hide 3753 */ 3754 @Override 3755 public VpnConfig getVpnConfig() { 3756 int user = UserHandle.getUserId(Binder.getCallingUid()); 3757 synchronized(mVpns) { 3758 return mVpns.get(user).getVpnConfig(); 3759 } 3760 } 3761 3762 /** 3763 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3764 * through NetworkStateTracker since it works differently. For example, it 3765 * needs to override DNS servers but never takes the default routes. It 3766 * relies on another data network, and it could keep existing connections 3767 * alive after reconnecting, switching between networks, or even resuming 3768 * from deep sleep. Calls from applications should be done synchronously 3769 * to avoid race conditions. As these are all hidden APIs, refactoring can 3770 * be done whenever a better abstraction is developed. 3771 */ 3772 public class VpnCallback { 3773 private VpnCallback() { 3774 } 3775 3776 public void onStateChanged(NetworkInfo info) { 3777 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3778 } 3779 3780 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3781 if (dnsServers == null) { 3782 restore(); 3783 return; 3784 } 3785 3786 // Convert DNS servers into addresses. 3787 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3788 for (String address : dnsServers) { 3789 // Double check the addresses and remove invalid ones. 3790 try { 3791 addresses.add(InetAddress.parseNumericAddress(address)); 3792 } catch (Exception e) { 3793 // ignore 3794 } 3795 } 3796 if (addresses.isEmpty()) { 3797 restore(); 3798 return; 3799 } 3800 3801 // Concatenate search domains into a string. 3802 StringBuilder buffer = new StringBuilder(); 3803 if (searchDomains != null) { 3804 for (String domain : searchDomains) { 3805 buffer.append(domain).append(' '); 3806 } 3807 } 3808 String domains = buffer.toString().trim(); 3809 3810 // Apply DNS changes. 3811 synchronized (mDnsLock) { 3812 updateDnsLocked("VPN", iface, addresses, domains, false); 3813 } 3814 3815 // Temporarily disable the default proxy (not global). 3816 synchronized (mProxyLock) { 3817 mDefaultProxyDisabled = true; 3818 if (mGlobalProxy == null && mDefaultProxy != null) { 3819 sendProxyBroadcast(null); 3820 } 3821 } 3822 3823 // TODO: support proxy per network. 3824 } 3825 3826 public void restore() { 3827 synchronized (mProxyLock) { 3828 mDefaultProxyDisabled = false; 3829 if (mGlobalProxy == null && mDefaultProxy != null) { 3830 sendProxyBroadcast(mDefaultProxy); 3831 } 3832 } 3833 } 3834 3835 public void protect(ParcelFileDescriptor socket) { 3836 try { 3837 final int mark = mNetd.getMarkForProtect(); 3838 NetworkUtils.markSocket(socket.getFd(), mark); 3839 } catch (RemoteException e) { 3840 } 3841 } 3842 3843 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3844 for (RouteInfo route : routes) { 3845 try { 3846 mNetd.setMarkedForwardingRoute(interfaze, route); 3847 } catch (RemoteException e) { 3848 } 3849 } 3850 } 3851 3852 public void setMarkedForwarding(String interfaze) { 3853 try { 3854 mNetd.setMarkedForwarding(interfaze); 3855 } catch (RemoteException e) { 3856 } 3857 } 3858 3859 public void clearMarkedForwarding(String interfaze) { 3860 try { 3861 mNetd.clearMarkedForwarding(interfaze); 3862 } catch (RemoteException e) { 3863 } 3864 } 3865 3866 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3867 int uidStart = uid * UserHandle.PER_USER_RANGE; 3868 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3869 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3870 } 3871 3872 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3873 int uidStart = uid * UserHandle.PER_USER_RANGE; 3874 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3875 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3876 } 3877 3878 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3879 boolean forwardDns) { 3880 try { 3881 mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd); 3882 if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3883 } catch (RemoteException e) { 3884 } 3885 3886 } 3887 3888 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3889 boolean forwardDns) { 3890 try { 3891 mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3892 if (forwardDns) mNetd.clearDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3893 } catch (RemoteException e) { 3894 } 3895 3896 } 3897 } 3898 3899 @Override 3900 public boolean updateLockdownVpn() { 3901 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3902 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3903 return false; 3904 } 3905 3906 // Tear down existing lockdown if profile was removed 3907 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3908 if (mLockdownEnabled) { 3909 if (!mKeyStore.isUnlocked()) { 3910 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3911 return false; 3912 } 3913 3914 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3915 final VpnProfile profile = VpnProfile.decode( 3916 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3917 int user = UserHandle.getUserId(Binder.getCallingUid()); 3918 synchronized(mVpns) { 3919 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3920 profile)); 3921 } 3922 } else { 3923 setLockdownTracker(null); 3924 } 3925 3926 return true; 3927 } 3928 3929 /** 3930 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3931 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3932 */ 3933 private void setLockdownTracker(LockdownVpnTracker tracker) { 3934 // Shutdown any existing tracker 3935 final LockdownVpnTracker existing = mLockdownTracker; 3936 mLockdownTracker = null; 3937 if (existing != null) { 3938 existing.shutdown(); 3939 } 3940 3941 try { 3942 if (tracker != null) { 3943 mNetd.setFirewallEnabled(true); 3944 mNetd.setFirewallInterfaceRule("lo", true); 3945 mLockdownTracker = tracker; 3946 mLockdownTracker.init(); 3947 } else { 3948 mNetd.setFirewallEnabled(false); 3949 } 3950 } catch (RemoteException e) { 3951 // ignored; NMS lives inside system_server 3952 } 3953 } 3954 3955 private void throwIfLockdownEnabled() { 3956 if (mLockdownEnabled) { 3957 throw new IllegalStateException("Unavailable in lockdown mode"); 3958 } 3959 } 3960 3961 public void supplyMessenger(int networkType, Messenger messenger) { 3962 enforceConnectivityInternalPermission(); 3963 3964 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3965 mNetTrackers[networkType].supplyMessenger(messenger); 3966 } 3967 } 3968 3969 public int findConnectionTypeForIface(String iface) { 3970 enforceConnectivityInternalPermission(); 3971 3972 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3973 for (NetworkStateTracker tracker : mNetTrackers) { 3974 if (tracker != null) { 3975 LinkProperties lp = tracker.getLinkProperties(); 3976 if (lp != null && iface.equals(lp.getInterfaceName())) { 3977 return tracker.getNetworkInfo().getType(); 3978 } 3979 } 3980 } 3981 return ConnectivityManager.TYPE_NONE; 3982 } 3983 3984 /** 3985 * Have mobile data fail fast if enabled. 3986 * 3987 * @param enabled DctConstants.ENABLED/DISABLED 3988 */ 3989 private void setEnableFailFastMobileData(int enabled) { 3990 int tag; 3991 3992 if (enabled == DctConstants.ENABLED) { 3993 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3994 } else { 3995 tag = mEnableFailFastMobileDataTag.get(); 3996 } 3997 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3998 enabled)); 3999 } 4000 4001 private boolean isMobileDataStateTrackerReady() { 4002 MobileDataStateTracker mdst = 4003 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4004 return (mdst != null) && (mdst.isReady()); 4005 } 4006 4007 /** 4008 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4009 */ 4010 4011 /** 4012 * No connection was possible to the network. 4013 * This is NOT a warm sim. 4014 */ 4015 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4016 4017 /** 4018 * A connection was made to the internet, all is well. 4019 * This is NOT a warm sim. 4020 */ 4021 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4022 4023 /** 4024 * A connection was made but no dns server was available to resolve a name to address. 4025 * This is NOT a warm sim since provisioning network is supported. 4026 */ 4027 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4028 4029 /** 4030 * A connection was made but could not open a TCP connection. 4031 * This is NOT a warm sim since provisioning network is supported. 4032 */ 4033 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4034 4035 /** 4036 * A connection was made but there was a redirection, we appear to be in walled garden. 4037 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4038 */ 4039 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4040 4041 /** 4042 * The mobile network is a provisioning network. 4043 * This is an indication of a warm sim on a mobile network such as AT&T. 4044 */ 4045 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4046 4047 /** 4048 * The mobile network is provisioning 4049 */ 4050 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4051 4052 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4053 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4054 4055 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4056 4057 @Override 4058 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4059 int timeOutMs = -1; 4060 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4061 enforceConnectivityInternalPermission(); 4062 4063 final long token = Binder.clearCallingIdentity(); 4064 try { 4065 timeOutMs = suggestedTimeOutMs; 4066 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4067 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4068 } 4069 4070 // Check that mobile networks are supported 4071 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4072 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4073 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4074 return timeOutMs; 4075 } 4076 4077 // If we're already checking don't do it again 4078 // TODO: Add a queue of results... 4079 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4080 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4081 return timeOutMs; 4082 } 4083 4084 // Start off with mobile notification off 4085 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4086 4087 CheckMp checkMp = new CheckMp(mContext, this); 4088 CheckMp.CallBack cb = new CheckMp.CallBack() { 4089 @Override 4090 void onComplete(Integer result) { 4091 if (DBG) log("CheckMp.onComplete: result=" + result); 4092 NetworkInfo ni = 4093 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4094 switch(result) { 4095 case CMP_RESULT_CODE_CONNECTABLE: 4096 case CMP_RESULT_CODE_NO_CONNECTION: 4097 case CMP_RESULT_CODE_NO_DNS: 4098 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4099 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4100 break; 4101 } 4102 case CMP_RESULT_CODE_REDIRECTED: { 4103 if (DBG) log("CheckMp.onComplete: warm sim"); 4104 String url = getMobileProvisioningUrl(); 4105 if (TextUtils.isEmpty(url)) { 4106 url = getMobileRedirectedProvisioningUrl(); 4107 } 4108 if (TextUtils.isEmpty(url) == false) { 4109 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4110 setProvNotificationVisible(true, 4111 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4112 url); 4113 } else { 4114 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4115 } 4116 break; 4117 } 4118 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4119 String url = getMobileProvisioningUrl(); 4120 if (TextUtils.isEmpty(url) == false) { 4121 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4122 setProvNotificationVisible(true, 4123 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4124 url); 4125 // Mark that we've got a provisioning network and 4126 // Disable Mobile Data until user actually starts provisioning. 4127 mIsProvisioningNetwork.set(true); 4128 MobileDataStateTracker mdst = (MobileDataStateTracker) 4129 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4130 mdst.setInternalDataEnable(false); 4131 } else { 4132 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4133 } 4134 break; 4135 } 4136 case CMP_RESULT_CODE_IS_PROVISIONING: { 4137 // FIXME: Need to know when provisioning is done. Probably we can 4138 // check the completion status if successful we're done if we 4139 // "timedout" or still connected to provisioning APN turn off data? 4140 if (DBG) log("CheckMp.onComplete: provisioning started"); 4141 mIsStartingProvisioning.set(false); 4142 break; 4143 } 4144 default: { 4145 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4146 break; 4147 } 4148 } 4149 mIsCheckingMobileProvisioning.set(false); 4150 } 4151 }; 4152 CheckMp.Params params = 4153 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4154 if (DBG) log("checkMobileProvisioning: params=" + params); 4155 checkMp.execute(params); 4156 } finally { 4157 Binder.restoreCallingIdentity(token); 4158 if (DBG) log("checkMobileProvisioning: X"); 4159 } 4160 return timeOutMs; 4161 } 4162 4163 static class CheckMp extends 4164 AsyncTask<CheckMp.Params, Void, Integer> { 4165 private static final String CHECKMP_TAG = "CheckMp"; 4166 4167 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4168 private static boolean mTestingFailures; 4169 4170 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4171 private static final int MAX_LOOPS = 4; 4172 4173 // Number of milli-seconds to complete all of the retires 4174 public static final int MAX_TIMEOUT_MS = 60000; 4175 4176 // The socket should retry only 5 seconds, the default is longer 4177 private static final int SOCKET_TIMEOUT_MS = 5000; 4178 4179 // Sleep time for network errors 4180 private static final int NET_ERROR_SLEEP_SEC = 3; 4181 4182 // Sleep time for network route establishment 4183 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4184 4185 // Short sleep time for polling :( 4186 private static final int POLLING_SLEEP_SEC = 1; 4187 4188 private Context mContext; 4189 private ConnectivityService mCs; 4190 private TelephonyManager mTm; 4191 private Params mParams; 4192 4193 /** 4194 * Parameters for AsyncTask.execute 4195 */ 4196 static class Params { 4197 private String mUrl; 4198 private long mTimeOutMs; 4199 private CallBack mCb; 4200 4201 Params(String url, long timeOutMs, CallBack cb) { 4202 mUrl = url; 4203 mTimeOutMs = timeOutMs; 4204 mCb = cb; 4205 } 4206 4207 @Override 4208 public String toString() { 4209 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4210 } 4211 } 4212 4213 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4214 // issued by name or ip address, for Google its by name so when we construct 4215 // this HostnameVerifier we'll pass the original Uri and use it to verify 4216 // the host. If the host name in the original uril fails we'll test the 4217 // hostname parameter just incase things change. 4218 static class CheckMpHostnameVerifier implements HostnameVerifier { 4219 Uri mOrgUri; 4220 4221 CheckMpHostnameVerifier(Uri orgUri) { 4222 mOrgUri = orgUri; 4223 } 4224 4225 @Override 4226 public boolean verify(String hostname, SSLSession session) { 4227 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4228 String orgUriHost = mOrgUri.getHost(); 4229 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4230 if (DBG) { 4231 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4232 + " orgUriHost=" + orgUriHost); 4233 } 4234 return retVal; 4235 } 4236 } 4237 4238 /** 4239 * The call back object passed in Params. onComplete will be called 4240 * on the main thread. 4241 */ 4242 abstract static class CallBack { 4243 // Called on the main thread. 4244 abstract void onComplete(Integer result); 4245 } 4246 4247 public CheckMp(Context context, ConnectivityService cs) { 4248 if (Build.IS_DEBUGGABLE) { 4249 mTestingFailures = 4250 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4251 } else { 4252 mTestingFailures = false; 4253 } 4254 4255 mContext = context; 4256 mCs = cs; 4257 4258 // Setup access to TelephonyService we'll be using. 4259 mTm = (TelephonyManager) mContext.getSystemService( 4260 Context.TELEPHONY_SERVICE); 4261 } 4262 4263 /** 4264 * Get the default url to use for the test. 4265 */ 4266 public String getDefaultUrl() { 4267 // See http://go/clientsdns for usage approval 4268 String server = Settings.Global.getString(mContext.getContentResolver(), 4269 Settings.Global.CAPTIVE_PORTAL_SERVER); 4270 if (server == null) { 4271 server = "clients3.google.com"; 4272 } 4273 return "http://" + server + "/generate_204"; 4274 } 4275 4276 /** 4277 * Detect if its possible to connect to the http url. DNS based detection techniques 4278 * do not work at all hotspots. The best way to check is to perform a request to 4279 * a known address that fetches the data we expect. 4280 */ 4281 private synchronized Integer isMobileOk(Params params) { 4282 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4283 Uri orgUri = Uri.parse(params.mUrl); 4284 Random rand = new Random(); 4285 mParams = params; 4286 4287 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4288 result = CMP_RESULT_CODE_NO_CONNECTION; 4289 log("isMobileOk: X not mobile capable result=" + result); 4290 return result; 4291 } 4292 4293 if (mCs.mIsStartingProvisioning.get()) { 4294 result = CMP_RESULT_CODE_IS_PROVISIONING; 4295 log("isMobileOk: X is provisioning result=" + result); 4296 return result; 4297 } 4298 4299 // See if we've already determined we've got a provisioning connection, 4300 // if so we don't need to do anything active. 4301 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4302 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4303 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4304 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4305 4306 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4307 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4308 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4309 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4310 4311 if (isDefaultProvisioning || isHipriProvisioning) { 4312 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4313 log("isMobileOk: X default || hipri is provisioning result=" + result); 4314 return result; 4315 } 4316 4317 try { 4318 // Continue trying to connect until time has run out 4319 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4320 4321 if (!mCs.isMobileDataStateTrackerReady()) { 4322 // Wait for MobileDataStateTracker to be ready. 4323 if (DBG) log("isMobileOk: mdst is not ready"); 4324 while(SystemClock.elapsedRealtime() < endTime) { 4325 if (mCs.isMobileDataStateTrackerReady()) { 4326 // Enable fail fast as we'll do retries here and use a 4327 // hipri connection so the default connection stays active. 4328 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4329 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4330 break; 4331 } 4332 sleep(POLLING_SLEEP_SEC); 4333 } 4334 } 4335 4336 log("isMobileOk: start hipri url=" + params.mUrl); 4337 4338 // First wait until we can start using hipri 4339 Binder binder = new Binder(); 4340 while(SystemClock.elapsedRealtime() < endTime) { 4341 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4342 Phone.FEATURE_ENABLE_HIPRI, binder); 4343 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4344 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4345 log("isMobileOk: hipri started"); 4346 break; 4347 } 4348 if (VDBG) log("isMobileOk: hipri not started yet"); 4349 result = CMP_RESULT_CODE_NO_CONNECTION; 4350 sleep(POLLING_SLEEP_SEC); 4351 } 4352 4353 // Continue trying to connect until time has run out 4354 while(SystemClock.elapsedRealtime() < endTime) { 4355 try { 4356 // Wait for hipri to connect. 4357 // TODO: Don't poll and handle situation where hipri fails 4358 // because default is retrying. See b/9569540 4359 NetworkInfo.State state = mCs 4360 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4361 if (state != NetworkInfo.State.CONNECTED) { 4362 if (true/*VDBG*/) { 4363 log("isMobileOk: not connected ni=" + 4364 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4365 } 4366 sleep(POLLING_SLEEP_SEC); 4367 result = CMP_RESULT_CODE_NO_CONNECTION; 4368 continue; 4369 } 4370 4371 // Hipri has started check if this is a provisioning url 4372 MobileDataStateTracker mdst = (MobileDataStateTracker) 4373 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4374 if (mdst.isProvisioningNetwork()) { 4375 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4376 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4377 return result; 4378 } else { 4379 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4380 } 4381 4382 // Get of the addresses associated with the url host. We need to use the 4383 // address otherwise HttpURLConnection object will use the name to get 4384 // the addresses and will try every address but that will bypass the 4385 // route to host we setup and the connection could succeed as the default 4386 // interface might be connected to the internet via wifi or other interface. 4387 InetAddress[] addresses; 4388 try { 4389 addresses = InetAddress.getAllByName(orgUri.getHost()); 4390 } catch (UnknownHostException e) { 4391 result = CMP_RESULT_CODE_NO_DNS; 4392 log("isMobileOk: X UnknownHostException result=" + result); 4393 return result; 4394 } 4395 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4396 4397 // Get the type of addresses supported by this link 4398 LinkProperties lp = mCs.getLinkProperties( 4399 ConnectivityManager.TYPE_MOBILE_HIPRI); 4400 boolean linkHasIpv4 = lp.hasIPv4Address(); 4401 boolean linkHasIpv6 = lp.hasIPv6Address(); 4402 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4403 + " linkHasIpv6=" + linkHasIpv6); 4404 4405 final ArrayList<InetAddress> validAddresses = 4406 new ArrayList<InetAddress>(addresses.length); 4407 4408 for (InetAddress addr : addresses) { 4409 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4410 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4411 validAddresses.add(addr); 4412 } 4413 } 4414 4415 if (validAddresses.size() == 0) { 4416 return CMP_RESULT_CODE_NO_CONNECTION; 4417 } 4418 4419 int addrTried = 0; 4420 while (true) { 4421 // Loop through at most MAX_LOOPS valid addresses or until 4422 // we run out of time 4423 if (addrTried++ >= MAX_LOOPS) { 4424 log("isMobileOk: too many loops tried - giving up"); 4425 break; 4426 } 4427 if (SystemClock.elapsedRealtime() >= endTime) { 4428 log("isMobileOk: spend too much time - giving up"); 4429 break; 4430 } 4431 4432 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4433 validAddresses.size())); 4434 4435 // Make a route to host so we check the specific interface. 4436 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4437 hostAddr.getAddress(), null)) { 4438 // Wait a short time to be sure the route is established ?? 4439 log("isMobileOk:" 4440 + " wait to establish route to hostAddr=" + hostAddr); 4441 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4442 } else { 4443 log("isMobileOk:" 4444 + " could not establish route to hostAddr=" + hostAddr); 4445 // Wait a short time before the next attempt 4446 sleep(NET_ERROR_SLEEP_SEC); 4447 continue; 4448 } 4449 4450 // Rewrite the url to have numeric address to use the specific route 4451 // using http for half the attempts and https for the other half. 4452 // Doing https first and http second as on a redirected walled garden 4453 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4454 // handshake timed out" which we declare as 4455 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4456 // having http second we will be using logic used for some time. 4457 URL newUrl; 4458 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4459 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4460 orgUri.getPath()); 4461 log("isMobileOk: newUrl=" + newUrl); 4462 4463 HttpURLConnection urlConn = null; 4464 try { 4465 // Open the connection set the request headers and get the response 4466 urlConn = (HttpURLConnection)newUrl.openConnection( 4467 java.net.Proxy.NO_PROXY); 4468 if (scheme.equals("https")) { 4469 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4470 new CheckMpHostnameVerifier(orgUri)); 4471 } 4472 urlConn.setInstanceFollowRedirects(false); 4473 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4474 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4475 urlConn.setUseCaches(false); 4476 urlConn.setAllowUserInteraction(false); 4477 // Set the "Connection" to "Close" as by default "Keep-Alive" 4478 // is used which is useless in this case. 4479 urlConn.setRequestProperty("Connection", "close"); 4480 int responseCode = urlConn.getResponseCode(); 4481 4482 // For debug display the headers 4483 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4484 log("isMobileOk: headers=" + headers); 4485 4486 // Close the connection 4487 urlConn.disconnect(); 4488 urlConn = null; 4489 4490 if (mTestingFailures) { 4491 // Pretend no connection, this tests using http and https 4492 result = CMP_RESULT_CODE_NO_CONNECTION; 4493 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4494 continue; 4495 } 4496 4497 if (responseCode == 204) { 4498 // Return 4499 result = CMP_RESULT_CODE_CONNECTABLE; 4500 log("isMobileOk: X got expected responseCode=" + responseCode 4501 + " result=" + result); 4502 return result; 4503 } else { 4504 // Retry to be sure this was redirected, we've gotten 4505 // occasions where a server returned 200 even though 4506 // the device didn't have a "warm" sim. 4507 log("isMobileOk: not expected responseCode=" + responseCode); 4508 // TODO - it would be nice in the single-address case to do 4509 // another DNS resolve here, but flushing the cache is a bit 4510 // heavy-handed. 4511 result = CMP_RESULT_CODE_REDIRECTED; 4512 } 4513 } catch (Exception e) { 4514 log("isMobileOk: HttpURLConnection Exception" + e); 4515 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4516 if (urlConn != null) { 4517 urlConn.disconnect(); 4518 urlConn = null; 4519 } 4520 sleep(NET_ERROR_SLEEP_SEC); 4521 continue; 4522 } 4523 } 4524 log("isMobileOk: X loops|timed out result=" + result); 4525 return result; 4526 } catch (Exception e) { 4527 log("isMobileOk: Exception e=" + e); 4528 continue; 4529 } 4530 } 4531 log("isMobileOk: timed out"); 4532 } finally { 4533 log("isMobileOk: F stop hipri"); 4534 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4535 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4536 Phone.FEATURE_ENABLE_HIPRI); 4537 4538 // Wait for hipri to disconnect. 4539 long endTime = SystemClock.elapsedRealtime() + 5000; 4540 4541 while(SystemClock.elapsedRealtime() < endTime) { 4542 NetworkInfo.State state = mCs 4543 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4544 if (state != NetworkInfo.State.DISCONNECTED) { 4545 if (VDBG) { 4546 log("isMobileOk: connected ni=" + 4547 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4548 } 4549 sleep(POLLING_SLEEP_SEC); 4550 continue; 4551 } 4552 } 4553 4554 log("isMobileOk: X result=" + result); 4555 } 4556 return result; 4557 } 4558 4559 @Override 4560 protected Integer doInBackground(Params... params) { 4561 return isMobileOk(params[0]); 4562 } 4563 4564 @Override 4565 protected void onPostExecute(Integer result) { 4566 log("onPostExecute: result=" + result); 4567 if ((mParams != null) && (mParams.mCb != null)) { 4568 mParams.mCb.onComplete(result); 4569 } 4570 } 4571 4572 private String inetAddressesToString(InetAddress[] addresses) { 4573 StringBuffer sb = new StringBuffer(); 4574 boolean firstTime = true; 4575 for(InetAddress addr : addresses) { 4576 if (firstTime) { 4577 firstTime = false; 4578 } else { 4579 sb.append(","); 4580 } 4581 sb.append(addr); 4582 } 4583 return sb.toString(); 4584 } 4585 4586 private void printNetworkInfo() { 4587 boolean hasIccCard = mTm.hasIccCard(); 4588 int simState = mTm.getSimState(); 4589 log("hasIccCard=" + hasIccCard 4590 + " simState=" + simState); 4591 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4592 if (ni != null) { 4593 log("ni.length=" + ni.length); 4594 for (NetworkInfo netInfo: ni) { 4595 log("netInfo=" + netInfo.toString()); 4596 } 4597 } else { 4598 log("no network info ni=null"); 4599 } 4600 } 4601 4602 /** 4603 * Sleep for a few seconds then return. 4604 * @param seconds 4605 */ 4606 private static void sleep(int seconds) { 4607 long stopTime = System.nanoTime() + (seconds * 1000000000); 4608 long sleepTime; 4609 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4610 try { 4611 Thread.sleep(sleepTime / 1000000); 4612 } catch (InterruptedException ignored) { 4613 } 4614 } 4615 } 4616 4617 private static void log(String s) { 4618 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4619 } 4620 } 4621 4622 // TODO: Move to ConnectivityManager and make public? 4623 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4624 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4625 4626 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4627 @Override 4628 public void onReceive(Context context, Intent intent) { 4629 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4630 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4631 } 4632 } 4633 }; 4634 4635 private void handleMobileProvisioningAction(String url) { 4636 // Mark notification as not visible 4637 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4638 4639 // If provisioning network handle as a special case, 4640 // otherwise launch browser with the intent directly. 4641 if (mIsProvisioningNetwork.get()) { 4642 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4643 mIsStartingProvisioning.set(true); 4644 MobileDataStateTracker mdst = (MobileDataStateTracker) 4645 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4646 mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4647 mdst.enableMobileProvisioning(url); 4648 } else { 4649 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4650 // Check for apps that can handle provisioning first 4651 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4652 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4653 + mTelephonyManager.getSimOperator()); 4654 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4655 != null) { 4656 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4657 Intent.FLAG_ACTIVITY_NEW_TASK); 4658 mContext.startActivity(provisioningIntent); 4659 } else { 4660 // If no apps exist, use standard URL ACTION_VIEW method 4661 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4662 Intent.CATEGORY_APP_BROWSER); 4663 newIntent.setData(Uri.parse(url)); 4664 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4665 Intent.FLAG_ACTIVITY_NEW_TASK); 4666 try { 4667 mContext.startActivity(newIntent); 4668 } catch (ActivityNotFoundException e) { 4669 loge("handleMobileProvisioningAction: startActivity failed" + e); 4670 } 4671 } 4672 } 4673 } 4674 4675 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4676 private volatile boolean mIsNotificationVisible = false; 4677 4678 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4679 String url) { 4680 if (DBG) { 4681 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4682 + " extraInfo=" + extraInfo + " url=" + url); 4683 } 4684 4685 Resources r = Resources.getSystem(); 4686 NotificationManager notificationManager = (NotificationManager) mContext 4687 .getSystemService(Context.NOTIFICATION_SERVICE); 4688 4689 if (visible) { 4690 CharSequence title; 4691 CharSequence details; 4692 int icon; 4693 Intent intent; 4694 Notification notification = new Notification(); 4695 switch (networkType) { 4696 case ConnectivityManager.TYPE_WIFI: 4697 title = r.getString(R.string.wifi_available_sign_in, 0); 4698 details = r.getString(R.string.network_available_sign_in_detailed, 4699 extraInfo); 4700 icon = R.drawable.stat_notify_wifi_in_range; 4701 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4702 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4703 Intent.FLAG_ACTIVITY_NEW_TASK); 4704 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4705 break; 4706 case ConnectivityManager.TYPE_MOBILE: 4707 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4708 title = r.getString(R.string.network_available_sign_in, 0); 4709 // TODO: Change this to pull from NetworkInfo once a printable 4710 // name has been added to it 4711 details = mTelephonyManager.getNetworkOperatorName(); 4712 icon = R.drawable.stat_notify_rssi_in_range; 4713 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4714 intent.putExtra("EXTRA_URL", url); 4715 intent.setFlags(0); 4716 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4717 break; 4718 default: 4719 title = r.getString(R.string.network_available_sign_in, 0); 4720 details = r.getString(R.string.network_available_sign_in_detailed, 4721 extraInfo); 4722 icon = R.drawable.stat_notify_rssi_in_range; 4723 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4724 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4725 Intent.FLAG_ACTIVITY_NEW_TASK); 4726 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4727 break; 4728 } 4729 4730 notification.when = 0; 4731 notification.icon = icon; 4732 notification.flags = Notification.FLAG_AUTO_CANCEL; 4733 notification.tickerText = title; 4734 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4735 4736 try { 4737 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4738 } catch (NullPointerException npe) { 4739 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4740 npe.printStackTrace(); 4741 } 4742 } else { 4743 try { 4744 notificationManager.cancel(NOTIFICATION_ID, networkType); 4745 } catch (NullPointerException npe) { 4746 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4747 npe.printStackTrace(); 4748 } 4749 } 4750 mIsNotificationVisible = visible; 4751 } 4752 4753 /** Location to an updatable file listing carrier provisioning urls. 4754 * An example: 4755 * 4756 * <?xml version="1.0" encoding="utf-8"?> 4757 * <provisioningUrls> 4758 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4759 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4760 * </provisioningUrls> 4761 */ 4762 private static final String PROVISIONING_URL_PATH = 4763 "/data/misc/radio/provisioning_urls.xml"; 4764 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4765 4766 /** XML tag for root element. */ 4767 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4768 /** XML tag for individual url */ 4769 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4770 /** XML tag for redirected url */ 4771 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4772 /** XML attribute for mcc */ 4773 private static final String ATTR_MCC = "mcc"; 4774 /** XML attribute for mnc */ 4775 private static final String ATTR_MNC = "mnc"; 4776 4777 private static final int REDIRECTED_PROVISIONING = 1; 4778 private static final int PROVISIONING = 2; 4779 4780 private String getProvisioningUrlBaseFromFile(int type) { 4781 FileReader fileReader = null; 4782 XmlPullParser parser = null; 4783 Configuration config = mContext.getResources().getConfiguration(); 4784 String tagType; 4785 4786 switch (type) { 4787 case PROVISIONING: 4788 tagType = TAG_PROVISIONING_URL; 4789 break; 4790 case REDIRECTED_PROVISIONING: 4791 tagType = TAG_REDIRECTED_URL; 4792 break; 4793 default: 4794 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4795 type); 4796 } 4797 4798 try { 4799 fileReader = new FileReader(mProvisioningUrlFile); 4800 parser = Xml.newPullParser(); 4801 parser.setInput(fileReader); 4802 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4803 4804 while (true) { 4805 XmlUtils.nextElement(parser); 4806 4807 String element = parser.getName(); 4808 if (element == null) break; 4809 4810 if (element.equals(tagType)) { 4811 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4812 try { 4813 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4814 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4815 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4816 parser.next(); 4817 if (parser.getEventType() == XmlPullParser.TEXT) { 4818 return parser.getText(); 4819 } 4820 } 4821 } 4822 } catch (NumberFormatException e) { 4823 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4824 } 4825 } 4826 } 4827 return null; 4828 } catch (FileNotFoundException e) { 4829 loge("Carrier Provisioning Urls file not found"); 4830 } catch (XmlPullParserException e) { 4831 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4832 } catch (IOException e) { 4833 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4834 } finally { 4835 if (fileReader != null) { 4836 try { 4837 fileReader.close(); 4838 } catch (IOException e) {} 4839 } 4840 } 4841 return null; 4842 } 4843 4844 @Override 4845 public String getMobileRedirectedProvisioningUrl() { 4846 enforceConnectivityInternalPermission(); 4847 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4848 if (TextUtils.isEmpty(url)) { 4849 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4850 } 4851 return url; 4852 } 4853 4854 @Override 4855 public String getMobileProvisioningUrl() { 4856 enforceConnectivityInternalPermission(); 4857 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4858 if (TextUtils.isEmpty(url)) { 4859 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4860 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4861 } else { 4862 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4863 } 4864 // populate the iccid, imei and phone number in the provisioning url. 4865 if (!TextUtils.isEmpty(url)) { 4866 String phoneNumber = mTelephonyManager.getLine1Number(); 4867 if (TextUtils.isEmpty(phoneNumber)) { 4868 phoneNumber = "0000000000"; 4869 } 4870 url = String.format(url, 4871 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4872 mTelephonyManager.getDeviceId() /* IMEI */, 4873 phoneNumber /* Phone numer */); 4874 } 4875 4876 return url; 4877 } 4878 4879 @Override 4880 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4881 String extraInfo, String url) { 4882 enforceConnectivityInternalPermission(); 4883 setProvNotificationVisible(visible, networkType, extraInfo, url); 4884 } 4885 4886 @Override 4887 public void setAirplaneMode(boolean enable) { 4888 enforceConnectivityInternalPermission(); 4889 final long ident = Binder.clearCallingIdentity(); 4890 try { 4891 final ContentResolver cr = mContext.getContentResolver(); 4892 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4893 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4894 intent.putExtra("state", enable); 4895 mContext.sendBroadcast(intent); 4896 } finally { 4897 Binder.restoreCallingIdentity(ident); 4898 } 4899 } 4900 4901 private void onUserStart(int userId) { 4902 synchronized(mVpns) { 4903 Vpn userVpn = mVpns.get(userId); 4904 if (userVpn != null) { 4905 loge("Starting user already has a VPN"); 4906 return; 4907 } 4908 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 4909 mVpns.put(userId, userVpn); 4910 userVpn.startMonitoring(mContext, mTrackerHandler); 4911 } 4912 } 4913 4914 private void onUserStop(int userId) { 4915 synchronized(mVpns) { 4916 Vpn userVpn = mVpns.get(userId); 4917 if (userVpn == null) { 4918 loge("Stopping user has no VPN"); 4919 return; 4920 } 4921 mVpns.delete(userId); 4922 } 4923 } 4924 4925 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 4926 @Override 4927 public void onReceive(Context context, Intent intent) { 4928 final String action = intent.getAction(); 4929 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 4930 if (userId == UserHandle.USER_NULL) return; 4931 4932 if (Intent.ACTION_USER_STARTING.equals(action)) { 4933 onUserStart(userId); 4934 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 4935 onUserStop(userId); 4936 } 4937 } 4938 }; 4939 4940 @Override 4941 public LinkQualityInfo getLinkQualityInfo(int networkType) { 4942 enforceAccessPermission(); 4943 if (isNetworkTypeValid(networkType)) { 4944 return mNetTrackers[networkType].getLinkQualityInfo(); 4945 } else { 4946 return null; 4947 } 4948 } 4949 4950 @Override 4951 public LinkQualityInfo getActiveLinkQualityInfo() { 4952 enforceAccessPermission(); 4953 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 4954 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 4955 } else { 4956 return null; 4957 } 4958 } 4959 4960 @Override 4961 public LinkQualityInfo[] getAllLinkQualityInfo() { 4962 enforceAccessPermission(); 4963 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 4964 for (NetworkStateTracker tracker : mNetTrackers) { 4965 if (tracker != null) { 4966 LinkQualityInfo li = tracker.getLinkQualityInfo(); 4967 if (li != null) { 4968 result.add(li); 4969 } 4970 } 4971 } 4972 4973 return result.toArray(new LinkQualityInfo[result.size()]); 4974 } 4975 4976 /* Infrastructure for network sampling */ 4977 4978 private void handleNetworkSamplingTimeout() { 4979 4980 log("Sampling interval elapsed, updating statistics .."); 4981 4982 // initialize list of interfaces .. 4983 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 4984 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 4985 for (NetworkStateTracker tracker : mNetTrackers) { 4986 if (tracker != null) { 4987 String ifaceName = tracker.getNetworkInterfaceName(); 4988 if (ifaceName != null) { 4989 mapIfaceToSample.put(ifaceName, null); 4990 } 4991 } 4992 } 4993 4994 // Read samples for all interfaces 4995 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4996 4997 // process samples for all networks 4998 for (NetworkStateTracker tracker : mNetTrackers) { 4999 if (tracker != null) { 5000 String ifaceName = tracker.getNetworkInterfaceName(); 5001 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5002 if (ss != null) { 5003 // end the previous sampling cycle 5004 tracker.stopSampling(ss); 5005 // start a new sampling cycle .. 5006 tracker.startSampling(ss); 5007 } 5008 } 5009 } 5010 5011 log("Done."); 5012 5013 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5014 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5015 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5016 5017 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5018 5019 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5020 } 5021 5022 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5023 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5024 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5025 } 5026} 5027