ConnectivityService.java revision ad50a1fed01e7c24531ad26d9de70c7b0127ea76
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_MOBILE; 26import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 28import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 29import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 31import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 33import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_WIFI; 36import static android.net.ConnectivityManager.TYPE_WIMAX; 37import static android.net.ConnectivityManager.TYPE_PROXY; 38import static android.net.ConnectivityManager.getNetworkTypeName; 39import static android.net.ConnectivityManager.isNetworkTypeValid; 40import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 41import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 42 43import android.app.AlarmManager; 44import android.app.Notification; 45import android.app.NotificationManager; 46import android.app.PendingIntent; 47import android.content.ActivityNotFoundException; 48import android.content.BroadcastReceiver; 49import android.content.ContentResolver; 50import android.content.Context; 51import android.content.ContextWrapper; 52import android.content.Intent; 53import android.content.IntentFilter; 54import android.content.pm.PackageManager; 55import android.content.res.Configuration; 56import android.content.res.Resources; 57import android.database.ContentObserver; 58import android.net.ConnectivityManager; 59import android.net.IConnectivityManager; 60import android.net.INetworkManagementEventObserver; 61import android.net.INetworkPolicyListener; 62import android.net.INetworkPolicyManager; 63import android.net.INetworkStatsService; 64import android.net.LinkAddress; 65import android.net.LinkProperties; 66import android.net.LinkProperties.CompareResult; 67import android.net.LinkQualityInfo; 68import android.net.MobileDataStateTracker; 69import android.net.Network; 70import android.net.NetworkAgent; 71import android.net.NetworkCapabilities; 72import android.net.NetworkConfig; 73import android.net.NetworkInfo; 74import android.net.NetworkInfo.DetailedState; 75import android.net.NetworkFactory; 76import android.net.NetworkMisc; 77import android.net.NetworkQuotaInfo; 78import android.net.NetworkRequest; 79import android.net.NetworkState; 80import android.net.NetworkStateTracker; 81import android.net.NetworkUtils; 82import android.net.Proxy; 83import android.net.ProxyDataTracker; 84import android.net.ProxyInfo; 85import android.net.RouteInfo; 86import android.net.SamplingDataTracker; 87import android.net.UidRange; 88import android.net.Uri; 89import android.net.wimax.WimaxManagerConstants; 90import android.os.AsyncTask; 91import android.os.Binder; 92import android.os.Build; 93import android.os.FileUtils; 94import android.os.Handler; 95import android.os.HandlerThread; 96import android.os.IBinder; 97import android.os.INetworkManagementService; 98import android.os.Looper; 99import android.os.Message; 100import android.os.Messenger; 101import android.os.ParcelFileDescriptor; 102import android.os.PowerManager; 103import android.os.Process; 104import android.os.RemoteException; 105import android.os.ServiceManager; 106import android.os.SystemClock; 107import android.os.SystemProperties; 108import android.os.UserHandle; 109import android.os.UserManager; 110import android.provider.Settings; 111import android.security.Credentials; 112import android.security.KeyStore; 113import android.telephony.TelephonyManager; 114import android.text.TextUtils; 115import android.util.Slog; 116import android.util.SparseArray; 117import android.util.SparseIntArray; 118import android.util.Xml; 119 120import com.android.internal.R; 121import com.android.internal.annotations.GuardedBy; 122import com.android.internal.app.IBatteryStats; 123import com.android.internal.net.LegacyVpnInfo; 124import com.android.internal.net.NetworkStatsFactory; 125import com.android.internal.net.VpnConfig; 126import com.android.internal.net.VpnProfile; 127import com.android.internal.telephony.DctConstants; 128import com.android.internal.telephony.Phone; 129import com.android.internal.telephony.PhoneConstants; 130import com.android.internal.telephony.TelephonyIntents; 131import com.android.internal.util.AsyncChannel; 132import com.android.internal.util.IndentingPrintWriter; 133import com.android.internal.util.XmlUtils; 134import com.android.server.am.BatteryStatsService; 135import com.android.server.connectivity.DataConnectionStats; 136import com.android.server.connectivity.Nat464Xlat; 137import com.android.server.connectivity.NetworkAgentInfo; 138import com.android.server.connectivity.NetworkMonitor; 139import com.android.server.connectivity.PacManager; 140import com.android.server.connectivity.Tethering; 141import com.android.server.connectivity.Vpn; 142import com.android.server.net.BaseNetworkObserver; 143import com.android.server.net.LockdownVpnTracker; 144import com.google.android.collect.Lists; 145import com.google.android.collect.Sets; 146 147import dalvik.system.DexClassLoader; 148 149import org.xmlpull.v1.XmlPullParser; 150import org.xmlpull.v1.XmlPullParserException; 151 152import java.io.File; 153import java.io.FileDescriptor; 154import java.io.FileNotFoundException; 155import java.io.FileReader; 156import java.io.IOException; 157import java.io.PrintWriter; 158import java.lang.reflect.Constructor; 159import java.net.HttpURLConnection; 160import java.net.Inet4Address; 161import java.net.Inet6Address; 162import java.net.InetAddress; 163import java.net.URL; 164import java.net.UnknownHostException; 165import java.util.ArrayList; 166import java.util.Arrays; 167import java.util.Collection; 168import java.util.GregorianCalendar; 169import java.util.HashMap; 170import java.util.HashSet; 171import java.util.List; 172import java.util.Map; 173import java.util.Random; 174import java.util.concurrent.atomic.AtomicBoolean; 175import java.util.concurrent.atomic.AtomicInteger; 176 177import javax.net.ssl.HostnameVerifier; 178import javax.net.ssl.HttpsURLConnection; 179import javax.net.ssl.SSLSession; 180 181/** 182 * @hide 183 */ 184public class ConnectivityService extends IConnectivityManager.Stub { 185 private static final String TAG = "ConnectivityService"; 186 187 private static final boolean DBG = true; 188 private static final boolean VDBG = false; 189 190 // network sampling debugging 191 private static final boolean SAMPLE_DBG = false; 192 193 private static final boolean LOGD_RULES = false; 194 195 // TODO: create better separation between radio types and network types 196 197 // how long to wait before switching back to a radio's default network 198 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 199 // system property that can override the above value 200 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 201 "android.telephony.apn-restore"; 202 203 // Default value if FAIL_FAST_TIME_MS is not set 204 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 205 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 206 private static final String FAIL_FAST_TIME_MS = 207 "persist.radio.fail_fast_time_ms"; 208 209 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 210 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 211 212 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 213 214 private PendingIntent mSampleIntervalElapsedIntent; 215 216 // Set network sampling interval at 12 minutes, this way, even if the timers get 217 // aggregated, it will fire at around 15 minutes, which should allow us to 218 // aggregate this timer with other timers (specially the socket keep alive timers) 219 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 220 221 // start network sampling a minute after booting ... 222 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 223 224 AlarmManager mAlarmManager; 225 226 private Tethering mTethering; 227 228 private KeyStore mKeyStore; 229 230 @GuardedBy("mVpns") 231 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 232 233 private boolean mLockdownEnabled; 234 private LockdownVpnTracker mLockdownTracker; 235 236 private Nat464Xlat mClat; 237 238 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 239 private Object mRulesLock = new Object(); 240 /** Currently active network rules by UID. */ 241 private SparseIntArray mUidRules = new SparseIntArray(); 242 /** Set of ifaces that are costly. */ 243 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 244 245 /** 246 * Sometimes we want to refer to the individual network state 247 * trackers separately, and sometimes we just want to treat them 248 * abstractly. 249 */ 250 private NetworkStateTracker mNetTrackers[]; 251 252 private Context mContext; 253 private int mNetworkPreference; 254 private int mActiveDefaultNetwork = TYPE_NONE; 255 // 0 is full bad, 100 is full good 256 private int mDefaultInetConditionPublished = 0; 257 258 private Object mDnsLock = new Object(); 259 private int mNumDnsEntries; 260 261 private boolean mTestMode; 262 private static ConnectivityService sServiceInstance; 263 264 private INetworkManagementService mNetd; 265 private INetworkPolicyManager mPolicyManager; 266 267 private String mCurrentTcpBufferSizes; 268 269 private static final int ENABLED = 1; 270 private static final int DISABLED = 0; 271 272 /** 273 * used internally to change our mobile data enabled flag 274 */ 275 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 276 277 /** 278 * used internally to clear a wakelock when transitioning 279 * from one net to another. Clear happens when we get a new 280 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 281 * after a timeout if no network is found (typically 1 min). 282 */ 283 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 284 285 /** 286 * used internally to reload global proxy settings 287 */ 288 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 289 290 /** 291 * used internally to set external dependency met/unmet 292 * arg1 = ENABLED (met) or DISABLED (unmet) 293 * arg2 = NetworkType 294 */ 295 private static final int EVENT_SET_DEPENDENCY_MET = 10; 296 297 /** 298 * used internally to send a sticky broadcast delayed. 299 */ 300 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 301 302 /** 303 * Used internally to 304 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 305 */ 306 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 307 308 /** 309 * Used internally to disable fail fast of mobile data 310 */ 311 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 312 313 /** 314 * used internally to indicate that data sampling interval is up 315 */ 316 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 317 318 /** 319 * PAC manager has received new port. 320 */ 321 private static final int EVENT_PROXY_HAS_CHANGED = 16; 322 323 /** 324 * used internally when registering NetworkFactories 325 * obj = NetworkFactoryInfo 326 */ 327 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 328 329 /** 330 * used internally when registering NetworkAgents 331 * obj = Messenger 332 */ 333 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 334 335 /** 336 * used to add a network request 337 * includes a NetworkRequestInfo 338 */ 339 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 340 341 /** 342 * indicates a timeout period is over - check if we had a network yet or not 343 * and if not, call the timeout calback (but leave the request live until they 344 * cancel it. 345 * includes a NetworkRequestInfo 346 */ 347 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 348 349 /** 350 * used to add a network listener - no request 351 * includes a NetworkRequestInfo 352 */ 353 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 354 355 /** 356 * used to remove a network request, either a listener or a real request 357 * arg1 = UID of caller 358 * obj = NetworkRequest 359 */ 360 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 361 362 /** 363 * used internally when registering NetworkFactories 364 * obj = Messenger 365 */ 366 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 367 368 /** 369 * used internally to expire a wakelock when transitioning 370 * from one net to another. Expire happens when we fail to find 371 * a new network (typically after 1 minute) - 372 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 373 * a replacement network. 374 */ 375 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 376 377 /** 378 * Used internally to indicate the system is ready. 379 */ 380 private static final int EVENT_SYSTEM_READY = 25; 381 382 383 /** Handler used for internal events. */ 384 final private InternalHandler mHandler; 385 /** Handler used for incoming {@link NetworkStateTracker} events. */ 386 final private NetworkStateTrackerHandler mTrackerHandler; 387 388 private boolean mSystemReady; 389 private Intent mInitialBroadcast; 390 391 private PowerManager.WakeLock mNetTransitionWakeLock; 392 private String mNetTransitionWakeLockCausedBy = ""; 393 private int mNetTransitionWakeLockSerialNumber; 394 private int mNetTransitionWakeLockTimeout; 395 396 private InetAddress mDefaultDns; 397 398 // used in DBG mode to track inet condition reports 399 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 400 private ArrayList mInetLog; 401 402 // track the current default http proxy - tell the world if we get a new one (real change) 403 private ProxyInfo mDefaultProxy = null; 404 private Object mProxyLock = new Object(); 405 private boolean mDefaultProxyDisabled = false; 406 407 // track the global proxy. 408 private ProxyInfo mGlobalProxy = null; 409 410 private PacManager mPacManager = null; 411 412 private SettingsObserver mSettingsObserver; 413 414 private UserManager mUserManager; 415 416 NetworkConfig[] mNetConfigs; 417 int mNetworksDefined; 418 419 // the set of network types that can only be enabled by system/sig apps 420 List mProtectedNetworks; 421 422 private DataConnectionStats mDataConnectionStats; 423 424 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 425 426 TelephonyManager mTelephonyManager; 427 428 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 429 private final static int MIN_NET_ID = 100; // some reserved marks 430 private final static int MAX_NET_ID = 65535; 431 private int mNextNetId = MIN_NET_ID; 432 433 // sequence number of NetworkRequests 434 private int mNextNetworkRequestId = 1; 435 436 /** 437 * Implements support for the legacy "one network per network type" model. 438 * 439 * We used to have a static array of NetworkStateTrackers, one for each 440 * network type, but that doesn't work any more now that we can have, 441 * for example, more that one wifi network. This class stores all the 442 * NetworkAgentInfo objects that support a given type, but the legacy 443 * API will only see the first one. 444 * 445 * It serves two main purposes: 446 * 447 * 1. Provide information about "the network for a given type" (since this 448 * API only supports one). 449 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 450 * the first network for a given type changes, or if the default network 451 * changes. 452 */ 453 private class LegacyTypeTracker { 454 455 private static final boolean DBG = true; 456 private static final boolean VDBG = false; 457 private static final String TAG = "CSLegacyTypeTracker"; 458 459 /** 460 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 461 * Each list holds references to all NetworkAgentInfos that are used to 462 * satisfy requests for that network type. 463 * 464 * This array is built out at startup such that an unsupported network 465 * doesn't get an ArrayList instance, making this a tristate: 466 * unsupported, supported but not active and active. 467 * 468 * The actual lists are populated when we scan the network types that 469 * are supported on this device. 470 */ 471 private ArrayList<NetworkAgentInfo> mTypeLists[]; 472 473 public LegacyTypeTracker() { 474 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 475 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 476 } 477 478 public void addSupportedType(int type) { 479 if (mTypeLists[type] != null) { 480 throw new IllegalStateException( 481 "legacy list for type " + type + "already initialized"); 482 } 483 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 484 } 485 486 public boolean isTypeSupported(int type) { 487 return isNetworkTypeValid(type) && mTypeLists[type] != null; 488 } 489 490 public NetworkAgentInfo getNetworkForType(int type) { 491 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 492 return mTypeLists[type].get(0); 493 } else { 494 return null; 495 } 496 } 497 498 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 499 if (DBG) { 500 log("Sending " + (connected ? "connected" : "disconnected") + 501 " broadcast for type " + type + " " + nai.name() + 502 " isDefaultNetwork=" + isDefaultNetwork(nai)); 503 } 504 } 505 506 /** Adds the given network to the specified legacy type list. */ 507 public void add(int type, NetworkAgentInfo nai) { 508 if (!isTypeSupported(type)) { 509 return; // Invalid network type. 510 } 511 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 512 513 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 514 if (list.contains(nai)) { 515 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 516 return; 517 } 518 519 if (list.isEmpty() || isDefaultNetwork(nai)) { 520 maybeLogBroadcast(nai, true, type); 521 sendLegacyNetworkBroadcast(nai, true, type); 522 } 523 list.add(nai); 524 } 525 526 /** Removes the given network from the specified legacy type list. */ 527 public void remove(int type, NetworkAgentInfo nai) { 528 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 529 if (list == null || list.isEmpty()) { 530 return; 531 } 532 533 boolean wasFirstNetwork = list.get(0).equals(nai); 534 535 if (!list.remove(nai)) { 536 return; 537 } 538 539 if (wasFirstNetwork || isDefaultNetwork(nai)) { 540 maybeLogBroadcast(nai, false, type); 541 sendLegacyNetworkBroadcast(nai, false, type); 542 } 543 544 if (!list.isEmpty() && wasFirstNetwork) { 545 if (DBG) log("Other network available for type " + type + 546 ", sending connected broadcast"); 547 maybeLogBroadcast(list.get(0), false, type); 548 sendLegacyNetworkBroadcast(list.get(0), false, type); 549 } 550 } 551 552 /** Removes the given network from all legacy type lists. */ 553 public void remove(NetworkAgentInfo nai) { 554 if (VDBG) log("Removing agent " + nai); 555 for (int type = 0; type < mTypeLists.length; type++) { 556 remove(type, nai); 557 } 558 } 559 560 private String naiToString(NetworkAgentInfo nai) { 561 String name = (nai != null) ? nai.name() : "null"; 562 String state = (nai.networkInfo != null) ? 563 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 564 "???/???"; 565 return name + " " + state; 566 } 567 568 public void dump(IndentingPrintWriter pw) { 569 for (int type = 0; type < mTypeLists.length; type++) { 570 if (mTypeLists[type] == null) continue; 571 pw.print(type + " "); 572 pw.increaseIndent(); 573 if (mTypeLists[type].size() == 0) pw.println("none"); 574 for (NetworkAgentInfo nai : mTypeLists[type]) { 575 pw.println(naiToString(nai)); 576 } 577 pw.decreaseIndent(); 578 } 579 } 580 581 // This class needs its own log method because it has a different TAG. 582 private void log(String s) { 583 Slog.d(TAG, s); 584 } 585 586 } 587 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 588 589 public ConnectivityService(Context context, INetworkManagementService netManager, 590 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 591 if (DBG) log("ConnectivityService starting up"); 592 593 NetworkCapabilities netCap = new NetworkCapabilities(); 594 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 595 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 596 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 597 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 598 NetworkRequestInfo.REQUEST); 599 mNetworkRequests.put(mDefaultRequest, nri); 600 601 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 602 handlerThread.start(); 603 mHandler = new InternalHandler(handlerThread.getLooper()); 604 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 605 606 // setup our unique device name 607 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 608 String id = Settings.Secure.getString(context.getContentResolver(), 609 Settings.Secure.ANDROID_ID); 610 if (id != null && id.length() > 0) { 611 String name = new String("android-").concat(id); 612 SystemProperties.set("net.hostname", name); 613 } 614 } 615 616 // read our default dns server ip 617 String dns = Settings.Global.getString(context.getContentResolver(), 618 Settings.Global.DEFAULT_DNS_SERVER); 619 if (dns == null || dns.length() == 0) { 620 dns = context.getResources().getString( 621 com.android.internal.R.string.config_default_dns_server); 622 } 623 try { 624 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 625 } catch (IllegalArgumentException e) { 626 loge("Error setting defaultDns using " + dns); 627 } 628 629 mContext = checkNotNull(context, "missing Context"); 630 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 631 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 632 mKeyStore = KeyStore.getInstance(); 633 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 634 635 try { 636 mPolicyManager.registerListener(mPolicyListener); 637 } catch (RemoteException e) { 638 // ouch, no rules updates means some processes may never get network 639 loge("unable to register INetworkPolicyListener" + e.toString()); 640 } 641 642 final PowerManager powerManager = (PowerManager) context.getSystemService( 643 Context.POWER_SERVICE); 644 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 645 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 646 com.android.internal.R.integer.config_networkTransitionTimeout); 647 648 mNetTrackers = new NetworkStateTracker[ 649 ConnectivityManager.MAX_NETWORK_TYPE+1]; 650 651 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 652 653 // TODO: What is the "correct" way to do determine if this is a wifi only device? 654 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 655 log("wifiOnly=" + wifiOnly); 656 String[] naStrings = context.getResources().getStringArray( 657 com.android.internal.R.array.networkAttributes); 658 for (String naString : naStrings) { 659 try { 660 NetworkConfig n = new NetworkConfig(naString); 661 if (VDBG) log("naString=" + naString + " config=" + n); 662 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 663 loge("Error in networkAttributes - ignoring attempt to define type " + 664 n.type); 665 continue; 666 } 667 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 668 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 669 n.type); 670 continue; 671 } 672 if (mNetConfigs[n.type] != null) { 673 loge("Error in networkAttributes - ignoring attempt to redefine type " + 674 n.type); 675 continue; 676 } 677 mLegacyTypeTracker.addSupportedType(n.type); 678 679 mNetConfigs[n.type] = n; 680 mNetworksDefined++; 681 } catch(Exception e) { 682 // ignore it - leave the entry null 683 } 684 } 685 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 686 687 mProtectedNetworks = new ArrayList<Integer>(); 688 int[] protectedNetworks = context.getResources().getIntArray( 689 com.android.internal.R.array.config_protectedNetworks); 690 for (int p : protectedNetworks) { 691 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 692 mProtectedNetworks.add(p); 693 } else { 694 if (DBG) loge("Ignoring protectedNetwork " + p); 695 } 696 } 697 698 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 699 && SystemProperties.get("ro.build.type").equals("eng"); 700 701 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 702 703 //set up the listener for user state for creating user VPNs 704 IntentFilter intentFilter = new IntentFilter(); 705 intentFilter.addAction(Intent.ACTION_USER_STARTING); 706 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 707 mContext.registerReceiverAsUser( 708 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 709 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 710 711 try { 712 mNetd.registerObserver(mTethering); 713 mNetd.registerObserver(mDataActivityObserver); 714 mNetd.registerObserver(mClat); 715 } catch (RemoteException e) { 716 loge("Error registering observer :" + e); 717 } 718 719 if (DBG) { 720 mInetLog = new ArrayList(); 721 } 722 723 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 724 mSettingsObserver.observe(mContext); 725 726 mDataConnectionStats = new DataConnectionStats(mContext); 727 mDataConnectionStats.startMonitoring(); 728 729 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 730 731 IntentFilter filter = new IntentFilter(); 732 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 733 mContext.registerReceiver( 734 new BroadcastReceiver() { 735 @Override 736 public void onReceive(Context context, Intent intent) { 737 String action = intent.getAction(); 738 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 739 mHandler.sendMessage(mHandler.obtainMessage 740 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 741 } 742 } 743 }, 744 new IntentFilter(filter)); 745 746 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 747 748 filter = new IntentFilter(); 749 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 750 mContext.registerReceiver(mProvisioningReceiver, filter); 751 752 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 753 } 754 755 private synchronized int nextNetworkRequestId() { 756 return mNextNetworkRequestId++; 757 } 758 759 private void assignNextNetId(NetworkAgentInfo nai) { 760 synchronized (mNetworkForNetId) { 761 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 762 int netId = mNextNetId; 763 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 764 // Make sure NetID unused. http://b/16815182 765 if (mNetworkForNetId.get(netId) == null) { 766 nai.network = new Network(netId); 767 mNetworkForNetId.put(netId, nai); 768 return; 769 } 770 } 771 } 772 throw new IllegalStateException("No free netIds"); 773 } 774 775 private int getConnectivityChangeDelay() { 776 final ContentResolver cr = mContext.getContentResolver(); 777 778 /** Check system properties for the default value then use secure settings value, if any. */ 779 int defaultDelay = SystemProperties.getInt( 780 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 781 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 782 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 783 defaultDelay); 784 } 785 786 private boolean teardown(NetworkStateTracker netTracker) { 787 if (netTracker.teardown()) { 788 netTracker.setTeardownRequested(true); 789 return true; 790 } else { 791 return false; 792 } 793 } 794 795 /** 796 * Check if UID should be blocked from using the network represented by the given networkType. 797 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 798 */ 799 private boolean isNetworkBlocked(int networkType, int uid) { 800 return isNetworkWithLinkPropertiesBlocked(getLinkPropertiesForType(networkType), uid); 801 } 802 803 /** 804 * Check if UID should be blocked from using the network represented by the given 805 * NetworkAgentInfo. 806 */ 807 private boolean isNetworkBlocked(NetworkAgentInfo nai, int uid) { 808 return isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid); 809 } 810 811 /** 812 * Check if UID should be blocked from using the network with the given LinkProperties. 813 */ 814 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 815 final boolean networkCostly; 816 final int uidRules; 817 818 final String iface = (lp == null ? "" : lp.getInterfaceName()); 819 synchronized (mRulesLock) { 820 networkCostly = mMeteredIfaces.contains(iface); 821 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 822 } 823 824 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 825 return true; 826 } 827 828 // no restrictive rules; network is visible 829 return false; 830 } 831 832 /** 833 * Return a filtered {@link NetworkInfo}, potentially marked 834 * {@link DetailedState#BLOCKED} based on 835 * {@link #isNetworkBlocked}. 836 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 837 */ 838 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 839 NetworkInfo info = getNetworkInfoForType(networkType); 840 return getFilteredNetworkInfo(info, networkType, uid); 841 } 842 843 /* 844 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 845 */ 846 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) { 847 if (isNetworkBlocked(networkType, uid)) { 848 // network is blocked; clone and override state 849 info = new NetworkInfo(info); 850 info.setDetailedState(DetailedState.BLOCKED, null, null); 851 if (VDBG) log("returning Blocked NetworkInfo"); 852 } 853 if (mLockdownTracker != null) { 854 info = mLockdownTracker.augmentNetworkInfo(info); 855 if (VDBG) log("returning Locked NetworkInfo"); 856 } 857 return info; 858 } 859 860 private NetworkInfo getFilteredNetworkInfo(NetworkAgentInfo nai, int uid) { 861 NetworkInfo info = nai.networkInfo; 862 if (isNetworkBlocked(nai, uid)) { 863 // network is blocked; clone and override state 864 info = new NetworkInfo(info); 865 info.setDetailedState(DetailedState.BLOCKED, null, null); 866 if (DBG) log("returning Blocked NetworkInfo"); 867 } 868 if (mLockdownTracker != null) { 869 info = mLockdownTracker.augmentNetworkInfo(info); 870 if (DBG) log("returning Locked NetworkInfo"); 871 } 872 return info; 873 } 874 875 /** 876 * Return NetworkInfo for the active (i.e., connected) network interface. 877 * It is assumed that at most one network is active at a time. If more 878 * than one is active, it is indeterminate which will be returned. 879 * @return the info for the active network, or {@code null} if none is 880 * active 881 */ 882 @Override 883 public NetworkInfo getActiveNetworkInfo() { 884 enforceAccessPermission(); 885 final int uid = Binder.getCallingUid(); 886 return getNetworkInfo(mActiveDefaultNetwork, uid); 887 } 888 889 /** 890 * Find the first Provisioning network. 891 * 892 * @return NetworkInfo or null if none. 893 */ 894 private NetworkInfo getProvisioningNetworkInfo() { 895 enforceAccessPermission(); 896 897 // Find the first Provisioning Network 898 NetworkInfo provNi = null; 899 for (NetworkInfo ni : getAllNetworkInfo()) { 900 if (ni.isConnectedToProvisioningNetwork()) { 901 provNi = ni; 902 break; 903 } 904 } 905 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 906 return provNi; 907 } 908 909 /** 910 * Find the first Provisioning network or the ActiveDefaultNetwork 911 * if there is no Provisioning network 912 * 913 * @return NetworkInfo or null if none. 914 */ 915 @Override 916 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 917 enforceAccessPermission(); 918 919 NetworkInfo provNi = getProvisioningNetworkInfo(); 920 if (provNi == null) { 921 final int uid = Binder.getCallingUid(); 922 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 923 } 924 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 925 return provNi; 926 } 927 928 public NetworkInfo getActiveNetworkInfoUnfiltered() { 929 enforceAccessPermission(); 930 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 931 return getNetworkInfoForType(mActiveDefaultNetwork); 932 } 933 return null; 934 } 935 936 @Override 937 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 938 enforceConnectivityInternalPermission(); 939 return getNetworkInfo(mActiveDefaultNetwork, uid); 940 } 941 942 @Override 943 public NetworkInfo getNetworkInfo(int networkType) { 944 enforceAccessPermission(); 945 final int uid = Binder.getCallingUid(); 946 return getNetworkInfo(networkType, uid); 947 } 948 949 private NetworkInfo getNetworkInfo(int networkType, int uid) { 950 NetworkInfo info = null; 951 if (isNetworkTypeValid(networkType)) { 952 if (getNetworkInfoForType(networkType) != null) { 953 info = getFilteredNetworkInfo(networkType, uid); 954 } 955 } 956 return info; 957 } 958 959 @Override 960 public NetworkInfo getNetworkInfoForNetwork(Network network) { 961 enforceAccessPermission(); 962 if (network == null) return null; 963 964 final int uid = Binder.getCallingUid(); 965 NetworkAgentInfo nai = null; 966 synchronized (mNetworkForNetId) { 967 nai = mNetworkForNetId.get(network.netId); 968 } 969 if (nai == null) return null; 970 synchronized (nai) { 971 if (nai.networkInfo == null) return null; 972 973 return getFilteredNetworkInfo(nai, uid); 974 } 975 } 976 977 @Override 978 public NetworkInfo[] getAllNetworkInfo() { 979 enforceAccessPermission(); 980 final int uid = Binder.getCallingUid(); 981 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 982 synchronized (mRulesLock) { 983 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 984 networkType++) { 985 if (getNetworkInfoForType(networkType) != null) { 986 result.add(getFilteredNetworkInfo(networkType, uid)); 987 } 988 } 989 } 990 return result.toArray(new NetworkInfo[result.size()]); 991 } 992 993 @Override 994 public Network getNetworkForType(int networkType) { 995 enforceAccessPermission(); 996 final int uid = Binder.getCallingUid(); 997 if (isNetworkBlocked(networkType, uid)) { 998 return null; 999 } 1000 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1001 return (nai == null) ? null : nai.network; 1002 } 1003 1004 @Override 1005 public Network[] getAllNetworks() { 1006 enforceAccessPermission(); 1007 final ArrayList<Network> result = new ArrayList(); 1008 synchronized (mNetworkForNetId) { 1009 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1010 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1011 } 1012 } 1013 return result.toArray(new Network[result.size()]); 1014 } 1015 1016 @Override 1017 public boolean isNetworkSupported(int networkType) { 1018 enforceAccessPermission(); 1019 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1020 } 1021 1022 /** 1023 * Return LinkProperties for the active (i.e., connected) default 1024 * network interface. It is assumed that at most one default network 1025 * is active at a time. If more than one is active, it is indeterminate 1026 * which will be returned. 1027 * @return the ip properties for the active network, or {@code null} if 1028 * none is active 1029 */ 1030 @Override 1031 public LinkProperties getActiveLinkProperties() { 1032 return getLinkPropertiesForType(mActiveDefaultNetwork); 1033 } 1034 1035 @Override 1036 public LinkProperties getLinkPropertiesForType(int networkType) { 1037 enforceAccessPermission(); 1038 if (isNetworkTypeValid(networkType)) { 1039 return getLinkPropertiesForTypeInternal(networkType); 1040 } 1041 return null; 1042 } 1043 1044 // TODO - this should be ALL networks 1045 @Override 1046 public LinkProperties getLinkProperties(Network network) { 1047 enforceAccessPermission(); 1048 NetworkAgentInfo nai = null; 1049 synchronized (mNetworkForNetId) { 1050 nai = mNetworkForNetId.get(network.netId); 1051 } 1052 1053 if (nai != null) { 1054 synchronized (nai) { 1055 return new LinkProperties(nai.linkProperties); 1056 } 1057 } 1058 return null; 1059 } 1060 1061 @Override 1062 public NetworkCapabilities getNetworkCapabilities(Network network) { 1063 enforceAccessPermission(); 1064 NetworkAgentInfo nai = null; 1065 synchronized (mNetworkForNetId) { 1066 nai = mNetworkForNetId.get(network.netId); 1067 } 1068 if (nai != null) { 1069 synchronized (nai) { 1070 return new NetworkCapabilities(nai.networkCapabilities); 1071 } 1072 } 1073 return null; 1074 } 1075 1076 @Override 1077 public NetworkState[] getAllNetworkState() { 1078 enforceAccessPermission(); 1079 final int uid = Binder.getCallingUid(); 1080 final ArrayList<NetworkState> result = Lists.newArrayList(); 1081 synchronized (mRulesLock) { 1082 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1083 networkType++) { 1084 if (getNetworkInfoForType(networkType) != null) { 1085 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1086 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1087 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1088 result.add(new NetworkState(info, lp, netcap)); 1089 } 1090 } 1091 } 1092 return result.toArray(new NetworkState[result.size()]); 1093 } 1094 1095 private NetworkState getNetworkStateUnchecked(int networkType) { 1096 if (isNetworkTypeValid(networkType)) { 1097 NetworkInfo info = getNetworkInfoForType(networkType); 1098 if (info != null) { 1099 return new NetworkState(info, 1100 getLinkPropertiesForTypeInternal(networkType), 1101 getNetworkCapabilitiesForType(networkType)); 1102 } 1103 } 1104 return null; 1105 } 1106 1107 @Override 1108 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1109 enforceAccessPermission(); 1110 1111 final long token = Binder.clearCallingIdentity(); 1112 try { 1113 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1114 if (state != null) { 1115 try { 1116 return mPolicyManager.getNetworkQuotaInfo(state); 1117 } catch (RemoteException e) { 1118 } 1119 } 1120 return null; 1121 } finally { 1122 Binder.restoreCallingIdentity(token); 1123 } 1124 } 1125 1126 @Override 1127 public boolean isActiveNetworkMetered() { 1128 enforceAccessPermission(); 1129 final long token = Binder.clearCallingIdentity(); 1130 try { 1131 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1132 } finally { 1133 Binder.restoreCallingIdentity(token); 1134 } 1135 } 1136 1137 private boolean isNetworkMeteredUnchecked(int networkType) { 1138 final NetworkState state = getNetworkStateUnchecked(networkType); 1139 if (state != null) { 1140 try { 1141 return mPolicyManager.isNetworkMetered(state); 1142 } catch (RemoteException e) { 1143 } 1144 } 1145 return false; 1146 } 1147 1148 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1149 @Override 1150 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1151 int deviceType = Integer.parseInt(label); 1152 sendDataActivityBroadcast(deviceType, active, tsNanos); 1153 } 1154 }; 1155 1156 /** 1157 * Ensure that a network route exists to deliver traffic to the specified 1158 * host via the specified network interface. 1159 * @param networkType the type of the network over which traffic to the 1160 * specified host is to be routed 1161 * @param hostAddress the IP address of the host to which the route is 1162 * desired 1163 * @return {@code true} on success, {@code false} on failure 1164 */ 1165 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1166 enforceChangePermission(); 1167 if (mProtectedNetworks.contains(networkType)) { 1168 enforceConnectivityInternalPermission(); 1169 } 1170 1171 InetAddress addr; 1172 try { 1173 addr = InetAddress.getByAddress(hostAddress); 1174 } catch (UnknownHostException e) { 1175 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1176 return false; 1177 } 1178 1179 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1180 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1181 return false; 1182 } 1183 1184 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1185 if (nai == null) { 1186 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1187 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1188 } else { 1189 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1190 } 1191 return false; 1192 } 1193 1194 DetailedState netState; 1195 synchronized (nai) { 1196 netState = nai.networkInfo.getDetailedState(); 1197 } 1198 1199 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1200 if (VDBG) { 1201 log("requestRouteToHostAddress on down network " 1202 + "(" + networkType + ") - dropped" 1203 + " netState=" + netState); 1204 } 1205 return false; 1206 } 1207 1208 final int uid = Binder.getCallingUid(); 1209 final long token = Binder.clearCallingIdentity(); 1210 try { 1211 LinkProperties lp; 1212 int netId; 1213 synchronized (nai) { 1214 lp = nai.linkProperties; 1215 netId = nai.network.netId; 1216 } 1217 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1218 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1219 return ok; 1220 } finally { 1221 Binder.restoreCallingIdentity(token); 1222 } 1223 } 1224 1225 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1226 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1227 if (bestRoute == null) { 1228 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1229 } else { 1230 String iface = bestRoute.getInterface(); 1231 if (bestRoute.getGateway().equals(addr)) { 1232 // if there is no better route, add the implied hostroute for our gateway 1233 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1234 } else { 1235 // if we will connect to this through another route, add a direct route 1236 // to it's gateway 1237 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1238 } 1239 } 1240 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1241 try { 1242 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1243 } catch (Exception e) { 1244 // never crash - catch them all 1245 if (DBG) loge("Exception trying to add a route: " + e); 1246 return false; 1247 } 1248 return true; 1249 } 1250 1251 public void setDataDependency(int networkType, boolean met) { 1252 enforceConnectivityInternalPermission(); 1253 1254 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1255 (met ? ENABLED : DISABLED), networkType)); 1256 } 1257 1258 private void handleSetDependencyMet(int networkType, boolean met) { 1259 if (mNetTrackers[networkType] != null) { 1260 if (DBG) { 1261 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1262 } 1263 mNetTrackers[networkType].setDependencyMet(met); 1264 } 1265 } 1266 1267 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1268 @Override 1269 public void onUidRulesChanged(int uid, int uidRules) { 1270 // caller is NPMS, since we only register with them 1271 if (LOGD_RULES) { 1272 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1273 } 1274 1275 synchronized (mRulesLock) { 1276 // skip update when we've already applied rules 1277 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1278 if (oldRules == uidRules) return; 1279 1280 mUidRules.put(uid, uidRules); 1281 } 1282 1283 // TODO: notify UID when it has requested targeted updates 1284 } 1285 1286 @Override 1287 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1288 // caller is NPMS, since we only register with them 1289 if (LOGD_RULES) { 1290 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1291 } 1292 1293 synchronized (mRulesLock) { 1294 mMeteredIfaces.clear(); 1295 for (String iface : meteredIfaces) { 1296 mMeteredIfaces.add(iface); 1297 } 1298 } 1299 } 1300 1301 @Override 1302 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1303 // caller is NPMS, since we only register with them 1304 if (LOGD_RULES) { 1305 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1306 } 1307 1308 // kick off connectivity change broadcast for active network, since 1309 // global background policy change is radical. 1310 final int networkType = mActiveDefaultNetwork; 1311 if (isNetworkTypeValid(networkType)) { 1312 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1313 if (tracker != null) { 1314 final NetworkInfo info = tracker.getNetworkInfo(); 1315 if (info != null && info.isConnected()) { 1316 sendConnectedBroadcast(info); 1317 } 1318 } 1319 } 1320 } 1321 }; 1322 1323 @Override 1324 public void setPolicyDataEnable(int networkType, boolean enabled) { 1325 // only someone like NPMS should only be calling us 1326 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1327 1328 mHandler.sendMessage(mHandler.obtainMessage( 1329 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1330 } 1331 1332 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1333 // TODO - handle this passing to factories 1334// if (isNetworkTypeValid(networkType)) { 1335// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1336// if (tracker != null) { 1337// tracker.setPolicyDataEnable(enabled); 1338// } 1339// } 1340 } 1341 1342 private void enforceInternetPermission() { 1343 mContext.enforceCallingOrSelfPermission( 1344 android.Manifest.permission.INTERNET, 1345 "ConnectivityService"); 1346 } 1347 1348 private void enforceAccessPermission() { 1349 mContext.enforceCallingOrSelfPermission( 1350 android.Manifest.permission.ACCESS_NETWORK_STATE, 1351 "ConnectivityService"); 1352 } 1353 1354 private void enforceChangePermission() { 1355 mContext.enforceCallingOrSelfPermission( 1356 android.Manifest.permission.CHANGE_NETWORK_STATE, 1357 "ConnectivityService"); 1358 } 1359 1360 // TODO Make this a special check when it goes public 1361 private void enforceTetherChangePermission() { 1362 mContext.enforceCallingOrSelfPermission( 1363 android.Manifest.permission.CHANGE_NETWORK_STATE, 1364 "ConnectivityService"); 1365 } 1366 1367 private void enforceTetherAccessPermission() { 1368 mContext.enforceCallingOrSelfPermission( 1369 android.Manifest.permission.ACCESS_NETWORK_STATE, 1370 "ConnectivityService"); 1371 } 1372 1373 private void enforceConnectivityInternalPermission() { 1374 mContext.enforceCallingOrSelfPermission( 1375 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1376 "ConnectivityService"); 1377 } 1378 1379 public void sendConnectedBroadcast(NetworkInfo info) { 1380 enforceConnectivityInternalPermission(); 1381 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1382 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1383 } 1384 1385 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1386 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1387 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1388 } 1389 1390 private void sendInetConditionBroadcast(NetworkInfo info) { 1391 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1392 } 1393 1394 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1395 if (mLockdownTracker != null) { 1396 info = mLockdownTracker.augmentNetworkInfo(info); 1397 } 1398 1399 Intent intent = new Intent(bcastType); 1400 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1401 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1402 if (info.isFailover()) { 1403 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1404 info.setFailover(false); 1405 } 1406 if (info.getReason() != null) { 1407 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1408 } 1409 if (info.getExtraInfo() != null) { 1410 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1411 info.getExtraInfo()); 1412 } 1413 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1414 return intent; 1415 } 1416 1417 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1418 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1419 } 1420 1421 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1422 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1423 } 1424 1425 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1426 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1427 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1428 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1429 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1430 final long ident = Binder.clearCallingIdentity(); 1431 try { 1432 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1433 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1434 } finally { 1435 Binder.restoreCallingIdentity(ident); 1436 } 1437 } 1438 1439 private void sendStickyBroadcast(Intent intent) { 1440 synchronized(this) { 1441 if (!mSystemReady) { 1442 mInitialBroadcast = new Intent(intent); 1443 } 1444 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1445 if (DBG) { 1446 log("sendStickyBroadcast: action=" + intent.getAction()); 1447 } 1448 1449 final long ident = Binder.clearCallingIdentity(); 1450 try { 1451 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1452 } finally { 1453 Binder.restoreCallingIdentity(ident); 1454 } 1455 } 1456 } 1457 1458 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1459 if (delayMs <= 0) { 1460 sendStickyBroadcast(intent); 1461 } else { 1462 if (VDBG) { 1463 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1464 + intent.getAction()); 1465 } 1466 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1467 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1468 } 1469 } 1470 1471 void systemReady() { 1472 // start network sampling .. 1473 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1474 intent.setPackage(mContext.getPackageName()); 1475 1476 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1477 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1478 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1479 1480 loadGlobalProxy(); 1481 1482 synchronized(this) { 1483 mSystemReady = true; 1484 if (mInitialBroadcast != null) { 1485 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1486 mInitialBroadcast = null; 1487 } 1488 } 1489 // load the global proxy at startup 1490 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1491 1492 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1493 // for user to unlock device. 1494 if (!updateLockdownVpn()) { 1495 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1496 mContext.registerReceiver(mUserPresentReceiver, filter); 1497 } 1498 1499 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1500 } 1501 1502 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1503 @Override 1504 public void onReceive(Context context, Intent intent) { 1505 // Try creating lockdown tracker, since user present usually means 1506 // unlocked keystore. 1507 if (updateLockdownVpn()) { 1508 mContext.unregisterReceiver(this); 1509 } 1510 } 1511 }; 1512 1513 /** @hide */ 1514 @Override 1515 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1516 enforceConnectivityInternalPermission(); 1517 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1518// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1519 } 1520 1521 /** 1522 * Setup data activity tracking for the given network. 1523 * 1524 * Every {@code setupDataActivityTracking} should be paired with a 1525 * {@link #removeDataActivityTracking} for cleanup. 1526 */ 1527 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1528 final String iface = networkAgent.linkProperties.getInterfaceName(); 1529 1530 final int timeout; 1531 int type = ConnectivityManager.TYPE_NONE; 1532 1533 if (networkAgent.networkCapabilities.hasTransport( 1534 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1535 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1536 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1537 5); 1538 type = ConnectivityManager.TYPE_MOBILE; 1539 } else if (networkAgent.networkCapabilities.hasTransport( 1540 NetworkCapabilities.TRANSPORT_WIFI)) { 1541 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1542 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1543 0); 1544 type = ConnectivityManager.TYPE_WIFI; 1545 } else { 1546 // do not track any other networks 1547 timeout = 0; 1548 } 1549 1550 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1551 try { 1552 mNetd.addIdleTimer(iface, timeout, type); 1553 } catch (Exception e) { 1554 // You shall not crash! 1555 loge("Exception in setupDataActivityTracking " + e); 1556 } 1557 } 1558 } 1559 1560 /** 1561 * Remove data activity tracking when network disconnects. 1562 */ 1563 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1564 final String iface = networkAgent.linkProperties.getInterfaceName(); 1565 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1566 1567 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1568 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1569 try { 1570 // the call fails silently if no idletimer setup for this interface 1571 mNetd.removeIdleTimer(iface); 1572 } catch (Exception e) { 1573 loge("Exception in removeDataActivityTracking " + e); 1574 } 1575 } 1576 } 1577 1578 /** 1579 * Reads the network specific MTU size from reources. 1580 * and set it on it's iface. 1581 */ 1582 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1583 final String iface = newLp.getInterfaceName(); 1584 final int mtu = newLp.getMtu(); 1585 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1586 if (VDBG) log("identical MTU - not setting"); 1587 return; 1588 } 1589 1590 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1591 loge("Unexpected mtu value: " + mtu + ", " + iface); 1592 return; 1593 } 1594 1595 // Cannot set MTU without interface name 1596 if (TextUtils.isEmpty(iface)) { 1597 loge("Setting MTU size with null iface."); 1598 return; 1599 } 1600 1601 try { 1602 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1603 mNetd.setMtu(iface, mtu); 1604 } catch (Exception e) { 1605 Slog.e(TAG, "exception in setMtu()" + e); 1606 } 1607 } 1608 1609 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1610 1611 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1612 if (isDefaultNetwork(nai) == false) { 1613 return; 1614 } 1615 1616 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1617 String[] values = null; 1618 if (tcpBufferSizes != null) { 1619 values = tcpBufferSizes.split(","); 1620 } 1621 1622 if (values == null || values.length != 6) { 1623 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1624 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1625 values = tcpBufferSizes.split(","); 1626 } 1627 1628 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1629 1630 try { 1631 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1632 1633 final String prefix = "/sys/kernel/ipv4/tcp_"; 1634 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1635 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1636 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1637 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1638 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1639 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1640 mCurrentTcpBufferSizes = tcpBufferSizes; 1641 } catch (IOException e) { 1642 loge("Can't set TCP buffer sizes:" + e); 1643 } 1644 1645 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1646 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1647 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1648 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1649 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1650 if (rwndValue != 0) { 1651 SystemProperties.set(sysctlKey, rwndValue.toString()); 1652 } 1653 } 1654 1655 private void flushVmDnsCache() { 1656 /* 1657 * Tell the VMs to toss their DNS caches 1658 */ 1659 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1660 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1661 /* 1662 * Connectivity events can happen before boot has completed ... 1663 */ 1664 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1665 final long ident = Binder.clearCallingIdentity(); 1666 try { 1667 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1668 } finally { 1669 Binder.restoreCallingIdentity(ident); 1670 } 1671 } 1672 1673 @Override 1674 public int getRestoreDefaultNetworkDelay(int networkType) { 1675 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1676 NETWORK_RESTORE_DELAY_PROP_NAME); 1677 if(restoreDefaultNetworkDelayStr != null && 1678 restoreDefaultNetworkDelayStr.length() != 0) { 1679 try { 1680 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1681 } catch (NumberFormatException e) { 1682 } 1683 } 1684 // if the system property isn't set, use the value for the apn type 1685 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1686 1687 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1688 (mNetConfigs[networkType] != null)) { 1689 ret = mNetConfigs[networkType].restoreTime; 1690 } 1691 return ret; 1692 } 1693 1694 @Override 1695 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1696 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1697 if (mContext.checkCallingOrSelfPermission( 1698 android.Manifest.permission.DUMP) 1699 != PackageManager.PERMISSION_GRANTED) { 1700 pw.println("Permission Denial: can't dump ConnectivityService " + 1701 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1702 Binder.getCallingUid()); 1703 return; 1704 } 1705 1706 pw.println("NetworkFactories for:"); 1707 pw.increaseIndent(); 1708 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1709 pw.println(nfi.name); 1710 } 1711 pw.decreaseIndent(); 1712 pw.println(); 1713 1714 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1715 pw.print("Active default network: "); 1716 if (defaultNai == null) { 1717 pw.println("none"); 1718 } else { 1719 pw.println(defaultNai.network.netId); 1720 } 1721 pw.println(); 1722 1723 pw.println("Current Networks:"); 1724 pw.increaseIndent(); 1725 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1726 pw.println(nai.toString()); 1727 pw.increaseIndent(); 1728 pw.println("Requests:"); 1729 pw.increaseIndent(); 1730 for (int i = 0; i < nai.networkRequests.size(); i++) { 1731 pw.println(nai.networkRequests.valueAt(i).toString()); 1732 } 1733 pw.decreaseIndent(); 1734 pw.println("Lingered:"); 1735 pw.increaseIndent(); 1736 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1737 pw.decreaseIndent(); 1738 pw.decreaseIndent(); 1739 } 1740 pw.decreaseIndent(); 1741 pw.println(); 1742 1743 pw.println("Network Requests:"); 1744 pw.increaseIndent(); 1745 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1746 pw.println(nri.toString()); 1747 } 1748 pw.println(); 1749 pw.decreaseIndent(); 1750 1751 pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork); 1752 if (mActiveDefaultNetwork != TYPE_NONE) { 1753 NetworkInfo activeNetworkInfo = getActiveNetworkInfo(); 1754 if (activeNetworkInfo != null) { 1755 pw.print(" " + activeNetworkInfo.getState() + 1756 "/" + activeNetworkInfo.getDetailedState()); 1757 } 1758 } 1759 pw.println(); 1760 1761 pw.println("mLegacyTypeTracker:"); 1762 pw.increaseIndent(); 1763 mLegacyTypeTracker.dump(pw); 1764 pw.decreaseIndent(); 1765 pw.println(); 1766 1767 synchronized (this) { 1768 pw.println("NetworkTransitionWakeLock is currently " + 1769 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1770 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1771 } 1772 pw.println(); 1773 1774 mTethering.dump(fd, pw, args); 1775 1776 if (mInetLog != null) { 1777 pw.println(); 1778 pw.println("Inet condition reports:"); 1779 pw.increaseIndent(); 1780 for(int i = 0; i < mInetLog.size(); i++) { 1781 pw.println(mInetLog.get(i)); 1782 } 1783 pw.decreaseIndent(); 1784 } 1785 } 1786 1787 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1788 if (nai.network == null) return false; 1789 final NetworkAgentInfo officialNai; 1790 synchronized (mNetworkForNetId) { 1791 officialNai = mNetworkForNetId.get(nai.network.netId); 1792 } 1793 if (officialNai != null && officialNai.equals(nai)) return true; 1794 if (officialNai != null || VDBG) { 1795 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1796 " - " + nai); 1797 } 1798 return false; 1799 } 1800 1801 // must be stateless - things change under us. 1802 private class NetworkStateTrackerHandler extends Handler { 1803 public NetworkStateTrackerHandler(Looper looper) { 1804 super(looper); 1805 } 1806 1807 @Override 1808 public void handleMessage(Message msg) { 1809 NetworkInfo info; 1810 switch (msg.what) { 1811 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1812 handleAsyncChannelHalfConnect(msg); 1813 break; 1814 } 1815 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1816 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1817 if (nai != null) nai.asyncChannel.disconnect(); 1818 break; 1819 } 1820 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1821 handleAsyncChannelDisconnected(msg); 1822 break; 1823 } 1824 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1825 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1826 if (nai == null) { 1827 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1828 } else { 1829 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1830 } 1831 break; 1832 } 1833 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1834 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1835 if (nai == null) { 1836 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1837 } else { 1838 if (VDBG) { 1839 log("Update of LinkProperties for " + nai.name() + 1840 "; created=" + nai.created); 1841 } 1842 LinkProperties oldLp = nai.linkProperties; 1843 synchronized (nai) { 1844 nai.linkProperties = (LinkProperties)msg.obj; 1845 } 1846 if (nai.created) updateLinkProperties(nai, oldLp); 1847 } 1848 break; 1849 } 1850 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1851 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1852 if (nai == null) { 1853 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1854 break; 1855 } 1856 info = (NetworkInfo) msg.obj; 1857 updateNetworkInfo(nai, info); 1858 break; 1859 } 1860 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1861 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1862 if (nai == null) { 1863 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1864 break; 1865 } 1866 Integer score = (Integer) msg.obj; 1867 if (score != null) updateNetworkScore(nai, score.intValue()); 1868 break; 1869 } 1870 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1871 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1872 if (nai == null) { 1873 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1874 break; 1875 } 1876 try { 1877 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1878 } catch (Exception e) { 1879 // Never crash! 1880 loge("Exception in addVpnUidRanges: " + e); 1881 } 1882 break; 1883 } 1884 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1885 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1886 if (nai == null) { 1887 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1888 break; 1889 } 1890 try { 1891 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1892 } catch (Exception e) { 1893 // Never crash! 1894 loge("Exception in removeVpnUidRanges: " + e); 1895 } 1896 break; 1897 } 1898 case NetworkAgent.EVENT_BLOCK_ADDRESS_FAMILY: { 1899 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1900 if (nai == null) { 1901 loge("EVENT_BLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1902 break; 1903 } 1904 try { 1905 mNetd.blockAddressFamily((Integer) msg.obj, nai.network.netId, 1906 nai.linkProperties.getInterfaceName()); 1907 } catch (Exception e) { 1908 // Never crash! 1909 loge("Exception in blockAddressFamily: " + e); 1910 } 1911 break; 1912 } 1913 case NetworkAgent.EVENT_UNBLOCK_ADDRESS_FAMILY: { 1914 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1915 if (nai == null) { 1916 loge("EVENT_UNBLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1917 break; 1918 } 1919 try { 1920 mNetd.unblockAddressFamily((Integer) msg.obj, nai.network.netId, 1921 nai.linkProperties.getInterfaceName()); 1922 } catch (Exception e) { 1923 // Never crash! 1924 loge("Exception in blockAddressFamily: " + e); 1925 } 1926 break; 1927 } 1928 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1929 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1930 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1931 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1932 if (valid) { 1933 if (DBG) log("Validated " + nai.name()); 1934 nai.validated = true; 1935 rematchNetworkAndRequests(nai); 1936 } 1937 updateInetCondition(nai, valid); 1938 } 1939 break; 1940 } 1941 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1942 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1943 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1944 handleLingerComplete(nai); 1945 } 1946 break; 1947 } 1948 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1949 if (msg.arg1 == 0) { 1950 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1951 } else { 1952 NetworkAgentInfo nai = null; 1953 synchronized (mNetworkForNetId) { 1954 nai = mNetworkForNetId.get(msg.arg2); 1955 } 1956 if (nai == null) { 1957 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1958 break; 1959 } 1960 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1961 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1962 } 1963 break; 1964 } 1965 case NetworkStateTracker.EVENT_STATE_CHANGED: { 1966 info = (NetworkInfo) msg.obj; 1967 NetworkInfo.State state = info.getState(); 1968 1969 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 1970 (state == NetworkInfo.State.DISCONNECTED) || 1971 (state == NetworkInfo.State.SUSPENDED)) { 1972 log("ConnectivityChange for " + 1973 info.getTypeName() + ": " + 1974 state + "/" + info.getDetailedState()); 1975 } 1976 1977 // Since mobile has the notion of a network/apn that can be used for 1978 // provisioning we need to check every time we're connected as 1979 // CaptiveProtalTracker won't detected it because DCT doesn't report it 1980 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 1981 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 1982 // is received by MDST and sent here as EVENT_STATE_CHANGED. 1983 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 1984 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 1985 Settings.Global.DEVICE_PROVISIONED, 0)) 1986 && (((state == NetworkInfo.State.CONNECTED) 1987 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 1988 || info.isConnectedToProvisioningNetwork())) { 1989 log("ConnectivityChange checkMobileProvisioning for" 1990 + " TYPE_MOBILE or ProvisioningNetwork"); 1991 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 1992 } 1993 1994 EventLogTags.writeConnectivityStateChanged( 1995 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 1996 1997 if (info.isConnectedToProvisioningNetwork()) { 1998 /** 1999 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2000 * for now its an in between network, its a network that 2001 * is actually a default network but we don't want it to be 2002 * announced as such to keep background applications from 2003 * trying to use it. It turns out that some still try so we 2004 * take the additional step of clearing any default routes 2005 * to the link that may have incorrectly setup by the lower 2006 * levels. 2007 */ 2008 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 2009 if (DBG) { 2010 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2011 } 2012 2013 // Clear any default routes setup by the radio so 2014 // any activity by applications trying to use this 2015 // connection will fail until the provisioning network 2016 // is enabled. 2017 /* 2018 for (RouteInfo r : lp.getRoutes()) { 2019 removeRoute(lp, r, TO_DEFAULT_TABLE, 2020 mNetTrackers[info.getType()].getNetwork().netId); 2021 } 2022 */ 2023 } else if (state == NetworkInfo.State.DISCONNECTED) { 2024 } else if (state == NetworkInfo.State.SUSPENDED) { 2025 } else if (state == NetworkInfo.State.CONNECTED) { 2026 // handleConnect(info); 2027 } 2028 if (mLockdownTracker != null) { 2029 mLockdownTracker.onNetworkInfoChanged(info); 2030 } 2031 break; 2032 } 2033 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2034 info = (NetworkInfo) msg.obj; 2035 // TODO: Temporary allowing network configuration 2036 // change not resetting sockets. 2037 // @see bug/4455071 2038 /* 2039 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2040 false); 2041 */ 2042 break; 2043 } 2044 } 2045 } 2046 } 2047 2048 private void handleAsyncChannelHalfConnect(Message msg) { 2049 AsyncChannel ac = (AsyncChannel) msg.obj; 2050 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2051 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2052 if (VDBG) log("NetworkFactory connected"); 2053 // A network factory has connected. Send it all current NetworkRequests. 2054 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2055 if (nri.isRequest == false) continue; 2056 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2057 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2058 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2059 } 2060 } else { 2061 loge("Error connecting NetworkFactory"); 2062 mNetworkFactoryInfos.remove(msg.obj); 2063 } 2064 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2065 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2066 if (VDBG) log("NetworkAgent connected"); 2067 // A network agent has requested a connection. Establish the connection. 2068 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2069 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2070 } else { 2071 loge("Error connecting NetworkAgent"); 2072 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2073 if (nai != null) { 2074 synchronized (mNetworkForNetId) { 2075 mNetworkForNetId.remove(nai.network.netId); 2076 } 2077 // Just in case. 2078 mLegacyTypeTracker.remove(nai); 2079 } 2080 } 2081 } 2082 } 2083 private void handleAsyncChannelDisconnected(Message msg) { 2084 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2085 if (nai != null) { 2086 if (DBG) { 2087 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2088 } 2089 // A network agent has disconnected. 2090 if (nai.created) { 2091 // Tell netd to clean up the configuration for this network 2092 // (routing rules, DNS, etc). 2093 try { 2094 mNetd.removeNetwork(nai.network.netId); 2095 } catch (Exception e) { 2096 loge("Exception removing network: " + e); 2097 } 2098 } 2099 // TODO - if we move the logic to the network agent (have them disconnect 2100 // because they lost all their requests or because their score isn't good) 2101 // then they would disconnect organically, report their new state and then 2102 // disconnect the channel. 2103 if (nai.networkInfo.isConnected()) { 2104 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2105 null, null); 2106 } 2107 if (isDefaultNetwork(nai)) { 2108 mDefaultInetConditionPublished = 0; 2109 } 2110 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2111 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2112 mNetworkAgentInfos.remove(msg.replyTo); 2113 updateClat(null, nai.linkProperties, nai); 2114 mLegacyTypeTracker.remove(nai); 2115 synchronized (mNetworkForNetId) { 2116 mNetworkForNetId.remove(nai.network.netId); 2117 } 2118 // Since we've lost the network, go through all the requests that 2119 // it was satisfying and see if any other factory can satisfy them. 2120 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2121 for (int i = 0; i < nai.networkRequests.size(); i++) { 2122 NetworkRequest request = nai.networkRequests.valueAt(i); 2123 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2124 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2125 if (DBG) { 2126 log("Checking for replacement network to handle request " + request ); 2127 } 2128 mNetworkForRequestId.remove(request.requestId); 2129 sendUpdatedScoreToFactories(request, 0); 2130 NetworkAgentInfo alternative = null; 2131 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 2132 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 2133 if (existing.networkInfo.isConnected() && 2134 request.networkCapabilities.satisfiedByNetworkCapabilities( 2135 existing.networkCapabilities) && 2136 (alternative == null || 2137 alternative.getCurrentScore() < existing.getCurrentScore())) { 2138 alternative = existing; 2139 } 2140 } 2141 if (alternative != null) { 2142 if (DBG) log(" found replacement in " + alternative.name()); 2143 if (!toActivate.contains(alternative)) { 2144 toActivate.add(alternative); 2145 } 2146 } 2147 } 2148 } 2149 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2150 removeDataActivityTracking(nai); 2151 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 2152 requestNetworkTransitionWakelock(nai.name()); 2153 } 2154 for (NetworkAgentInfo networkToActivate : toActivate) { 2155 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2156 } 2157 } 2158 } 2159 2160 private void handleRegisterNetworkRequest(Message msg) { 2161 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2162 final NetworkCapabilities newCap = nri.request.networkCapabilities; 2163 int score = 0; 2164 2165 // Check for the best currently alive network that satisfies this request 2166 NetworkAgentInfo bestNetwork = null; 2167 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2168 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2169 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 2170 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2171 if ((bestNetwork == null) || 2172 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2173 if (!nri.isRequest) { 2174 // Not setting bestNetwork here as a listening NetworkRequest may be 2175 // satisfied by multiple Networks. Instead the request is added to 2176 // each satisfying Network and notified about each. 2177 network.addRequest(nri.request); 2178 notifyNetworkCallback(network, nri); 2179 } else { 2180 bestNetwork = network; 2181 } 2182 } 2183 } 2184 } 2185 if (bestNetwork != null) { 2186 if (DBG) log("using " + bestNetwork.name()); 2187 if (bestNetwork.networkInfo.isConnected()) { 2188 // Cancel any lingering so the linger timeout doesn't teardown this network 2189 // even though we have a request for it. 2190 bestNetwork.networkLingered.clear(); 2191 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2192 } 2193 bestNetwork.addRequest(nri.request); 2194 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2195 notifyNetworkCallback(bestNetwork, nri); 2196 score = bestNetwork.getCurrentScore(); 2197 if (nri.request.legacyType != TYPE_NONE) { 2198 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2199 } 2200 } 2201 mNetworkRequests.put(nri.request, nri); 2202 if (nri.isRequest) { 2203 if (DBG) log("sending new NetworkRequest to factories"); 2204 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2205 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2206 0, nri.request); 2207 } 2208 } 2209 } 2210 2211 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2212 NetworkRequestInfo nri = mNetworkRequests.get(request); 2213 if (nri != null) { 2214 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2215 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2216 return; 2217 } 2218 if (DBG) log("releasing NetworkRequest " + request); 2219 nri.unlinkDeathRecipient(); 2220 mNetworkRequests.remove(request); 2221 if (nri.isRequest) { 2222 // Find all networks that are satisfying this request and remove the request 2223 // from their request lists. 2224 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2225 if (nai.networkRequests.get(nri.request.requestId) != null) { 2226 nai.networkRequests.remove(nri.request.requestId); 2227 if (DBG) { 2228 log(" Removing from current network " + nai.name() + 2229 ", leaving " + nai.networkRequests.size() + 2230 " requests."); 2231 } 2232 // check if has any requests remaining and if not, 2233 // disconnect (unless it's a VPN). 2234 boolean keep = nai.isVPN(); 2235 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2236 NetworkRequest r = nai.networkRequests.valueAt(i); 2237 if (mNetworkRequests.get(r).isRequest) keep = true; 2238 } 2239 if (!keep) { 2240 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2241 nai.asyncChannel.disconnect(); 2242 } 2243 } 2244 } 2245 2246 // Maintain the illusion. When this request arrived, we might have preteneded 2247 // that a network connected to serve it, even though the network was already 2248 // connected. Now that this request has gone away, we might have to pretend 2249 // that the network disconnected. LegacyTypeTracker will generate that 2250 // phatom disconnect for this type. 2251 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2252 if (nai != null) { 2253 mNetworkForRequestId.remove(nri.request.requestId); 2254 if (nri.request.legacyType != TYPE_NONE) { 2255 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2256 } 2257 } 2258 2259 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2260 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2261 nri.request); 2262 } 2263 } else { 2264 // listens don't have a singular affectedNetwork. Check all networks to see 2265 // if this listen request applies and remove it. 2266 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2267 nai.networkRequests.remove(nri.request.requestId); 2268 } 2269 } 2270 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2271 } 2272 } 2273 2274 private class InternalHandler extends Handler { 2275 public InternalHandler(Looper looper) { 2276 super(looper); 2277 } 2278 2279 @Override 2280 public void handleMessage(Message msg) { 2281 NetworkInfo info; 2282 switch (msg.what) { 2283 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2284 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2285 String causedBy = null; 2286 synchronized (ConnectivityService.this) { 2287 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2288 mNetTransitionWakeLock.isHeld()) { 2289 mNetTransitionWakeLock.release(); 2290 causedBy = mNetTransitionWakeLockCausedBy; 2291 } else { 2292 break; 2293 } 2294 } 2295 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2296 log("Failed to find a new network - expiring NetTransition Wakelock"); 2297 } else { 2298 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2299 " cleared because we found a replacement network"); 2300 } 2301 break; 2302 } 2303 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2304 handleDeprecatedGlobalHttpProxy(); 2305 break; 2306 } 2307 case EVENT_SET_DEPENDENCY_MET: { 2308 boolean met = (msg.arg1 == ENABLED); 2309 handleSetDependencyMet(msg.arg2, met); 2310 break; 2311 } 2312 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2313 Intent intent = (Intent)msg.obj; 2314 sendStickyBroadcast(intent); 2315 break; 2316 } 2317 case EVENT_SET_POLICY_DATA_ENABLE: { 2318 final int networkType = msg.arg1; 2319 final boolean enabled = msg.arg2 == ENABLED; 2320 handleSetPolicyDataEnable(networkType, enabled); 2321 break; 2322 } 2323 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2324 int tag = mEnableFailFastMobileDataTag.get(); 2325 if (msg.arg1 == tag) { 2326 MobileDataStateTracker mobileDst = 2327 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2328 if (mobileDst != null) { 2329 mobileDst.setEnableFailFastMobileData(msg.arg2); 2330 } 2331 } else { 2332 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2333 + " != tag:" + tag); 2334 } 2335 break; 2336 } 2337 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2338 handleNetworkSamplingTimeout(); 2339 break; 2340 } 2341 case EVENT_PROXY_HAS_CHANGED: { 2342 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2343 break; 2344 } 2345 case EVENT_REGISTER_NETWORK_FACTORY: { 2346 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2347 break; 2348 } 2349 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2350 handleUnregisterNetworkFactory((Messenger)msg.obj); 2351 break; 2352 } 2353 case EVENT_REGISTER_NETWORK_AGENT: { 2354 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2355 break; 2356 } 2357 case EVENT_REGISTER_NETWORK_REQUEST: 2358 case EVENT_REGISTER_NETWORK_LISTENER: { 2359 handleRegisterNetworkRequest(msg); 2360 break; 2361 } 2362 case EVENT_RELEASE_NETWORK_REQUEST: { 2363 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2364 break; 2365 } 2366 case EVENT_SYSTEM_READY: { 2367 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2368 nai.networkMonitor.systemReady = true; 2369 } 2370 break; 2371 } 2372 } 2373 } 2374 } 2375 2376 // javadoc from interface 2377 public int tether(String iface) { 2378 enforceTetherChangePermission(); 2379 2380 if (isTetheringSupported()) { 2381 return mTethering.tether(iface); 2382 } else { 2383 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2384 } 2385 } 2386 2387 // javadoc from interface 2388 public int untether(String iface) { 2389 enforceTetherChangePermission(); 2390 2391 if (isTetheringSupported()) { 2392 return mTethering.untether(iface); 2393 } else { 2394 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2395 } 2396 } 2397 2398 // javadoc from interface 2399 public int getLastTetherError(String iface) { 2400 enforceTetherAccessPermission(); 2401 2402 if (isTetheringSupported()) { 2403 return mTethering.getLastTetherError(iface); 2404 } else { 2405 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2406 } 2407 } 2408 2409 // TODO - proper iface API for selection by property, inspection, etc 2410 public String[] getTetherableUsbRegexs() { 2411 enforceTetherAccessPermission(); 2412 if (isTetheringSupported()) { 2413 return mTethering.getTetherableUsbRegexs(); 2414 } else { 2415 return new String[0]; 2416 } 2417 } 2418 2419 public String[] getTetherableWifiRegexs() { 2420 enforceTetherAccessPermission(); 2421 if (isTetheringSupported()) { 2422 return mTethering.getTetherableWifiRegexs(); 2423 } else { 2424 return new String[0]; 2425 } 2426 } 2427 2428 public String[] getTetherableBluetoothRegexs() { 2429 enforceTetherAccessPermission(); 2430 if (isTetheringSupported()) { 2431 return mTethering.getTetherableBluetoothRegexs(); 2432 } else { 2433 return new String[0]; 2434 } 2435 } 2436 2437 public int setUsbTethering(boolean enable) { 2438 enforceTetherChangePermission(); 2439 if (isTetheringSupported()) { 2440 return mTethering.setUsbTethering(enable); 2441 } else { 2442 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2443 } 2444 } 2445 2446 // TODO - move iface listing, queries, etc to new module 2447 // javadoc from interface 2448 public String[] getTetherableIfaces() { 2449 enforceTetherAccessPermission(); 2450 return mTethering.getTetherableIfaces(); 2451 } 2452 2453 public String[] getTetheredIfaces() { 2454 enforceTetherAccessPermission(); 2455 return mTethering.getTetheredIfaces(); 2456 } 2457 2458 public String[] getTetheringErroredIfaces() { 2459 enforceTetherAccessPermission(); 2460 return mTethering.getErroredIfaces(); 2461 } 2462 2463 public String[] getTetheredDhcpRanges() { 2464 enforceConnectivityInternalPermission(); 2465 return mTethering.getTetheredDhcpRanges(); 2466 } 2467 2468 // if ro.tether.denied = true we default to no tethering 2469 // gservices could set the secure setting to 1 though to enable it on a build where it 2470 // had previously been turned off. 2471 public boolean isTetheringSupported() { 2472 enforceTetherAccessPermission(); 2473 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2474 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2475 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2476 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2477 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2478 mTethering.getTetherableWifiRegexs().length != 0 || 2479 mTethering.getTetherableBluetoothRegexs().length != 0) && 2480 mTethering.getUpstreamIfaceTypes().length != 0); 2481 } 2482 2483 // Called when we lose the default network and have no replacement yet. 2484 // This will automatically be cleared after X seconds or a new default network 2485 // becomes CONNECTED, whichever happens first. The timer is started by the 2486 // first caller and not restarted by subsequent callers. 2487 private void requestNetworkTransitionWakelock(String forWhom) { 2488 int serialNum = 0; 2489 synchronized (this) { 2490 if (mNetTransitionWakeLock.isHeld()) return; 2491 serialNum = ++mNetTransitionWakeLockSerialNumber; 2492 mNetTransitionWakeLock.acquire(); 2493 mNetTransitionWakeLockCausedBy = forWhom; 2494 } 2495 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2496 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2497 mNetTransitionWakeLockTimeout); 2498 return; 2499 } 2500 2501 // 100 percent is full good, 0 is full bad. 2502 public void reportInetCondition(int networkType, int percentage) { 2503 if (percentage > 50) return; // don't handle good network reports 2504 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2505 if (nai != null) reportBadNetwork(nai.network); 2506 } 2507 2508 public void reportBadNetwork(Network network) { 2509 enforceAccessPermission(); 2510 enforceInternetPermission(); 2511 2512 if (network == null) return; 2513 2514 final int uid = Binder.getCallingUid(); 2515 NetworkAgentInfo nai = null; 2516 synchronized (mNetworkForNetId) { 2517 nai = mNetworkForNetId.get(network.netId); 2518 } 2519 if (nai == null) return; 2520 synchronized (nai) { 2521 if (isNetworkBlocked(nai, uid)) return; 2522 2523 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2524 } 2525 } 2526 2527 public ProxyInfo getProxy() { 2528 // this information is already available as a world read/writable jvm property 2529 // so this API change wouldn't have a benifit. It also breaks the passing 2530 // of proxy info to all the JVMs. 2531 // enforceAccessPermission(); 2532 synchronized (mProxyLock) { 2533 ProxyInfo ret = mGlobalProxy; 2534 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2535 return ret; 2536 } 2537 } 2538 2539 public void setGlobalProxy(ProxyInfo proxyProperties) { 2540 enforceConnectivityInternalPermission(); 2541 2542 synchronized (mProxyLock) { 2543 if (proxyProperties == mGlobalProxy) return; 2544 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2545 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2546 2547 String host = ""; 2548 int port = 0; 2549 String exclList = ""; 2550 String pacFileUrl = ""; 2551 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2552 (proxyProperties.getPacFileUrl() != null))) { 2553 if (!proxyProperties.isValid()) { 2554 if (DBG) 2555 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2556 return; 2557 } 2558 mGlobalProxy = new ProxyInfo(proxyProperties); 2559 host = mGlobalProxy.getHost(); 2560 port = mGlobalProxy.getPort(); 2561 exclList = mGlobalProxy.getExclusionListAsString(); 2562 if (proxyProperties.getPacFileUrl() != null) { 2563 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2564 } 2565 } else { 2566 mGlobalProxy = null; 2567 } 2568 ContentResolver res = mContext.getContentResolver(); 2569 final long token = Binder.clearCallingIdentity(); 2570 try { 2571 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2572 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2573 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2574 exclList); 2575 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2576 } finally { 2577 Binder.restoreCallingIdentity(token); 2578 } 2579 } 2580 2581 if (mGlobalProxy == null) { 2582 proxyProperties = mDefaultProxy; 2583 } 2584 sendProxyBroadcast(proxyProperties); 2585 } 2586 2587 private void loadGlobalProxy() { 2588 ContentResolver res = mContext.getContentResolver(); 2589 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2590 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2591 String exclList = Settings.Global.getString(res, 2592 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2593 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2594 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2595 ProxyInfo proxyProperties; 2596 if (!TextUtils.isEmpty(pacFileUrl)) { 2597 proxyProperties = new ProxyInfo(pacFileUrl); 2598 } else { 2599 proxyProperties = new ProxyInfo(host, port, exclList); 2600 } 2601 if (!proxyProperties.isValid()) { 2602 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2603 return; 2604 } 2605 2606 synchronized (mProxyLock) { 2607 mGlobalProxy = proxyProperties; 2608 } 2609 } 2610 } 2611 2612 public ProxyInfo getGlobalProxy() { 2613 // this information is already available as a world read/writable jvm property 2614 // so this API change wouldn't have a benifit. It also breaks the passing 2615 // of proxy info to all the JVMs. 2616 // enforceAccessPermission(); 2617 synchronized (mProxyLock) { 2618 return mGlobalProxy; 2619 } 2620 } 2621 2622 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2623 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2624 && (proxy.getPacFileUrl() == null)) { 2625 proxy = null; 2626 } 2627 synchronized (mProxyLock) { 2628 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2629 if (mDefaultProxy == proxy) return; // catches repeated nulls 2630 if (proxy != null && !proxy.isValid()) { 2631 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2632 return; 2633 } 2634 2635 // This call could be coming from the PacManager, containing the port of the local 2636 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2637 // global (to get the correct local port), and send a broadcast. 2638 // TODO: Switch PacManager to have its own message to send back rather than 2639 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2640 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 2641 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2642 mGlobalProxy = proxy; 2643 sendProxyBroadcast(mGlobalProxy); 2644 return; 2645 } 2646 mDefaultProxy = proxy; 2647 2648 if (mGlobalProxy != null) return; 2649 if (!mDefaultProxyDisabled) { 2650 sendProxyBroadcast(proxy); 2651 } 2652 } 2653 } 2654 2655 private void handleDeprecatedGlobalHttpProxy() { 2656 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2657 Settings.Global.HTTP_PROXY); 2658 if (!TextUtils.isEmpty(proxy)) { 2659 String data[] = proxy.split(":"); 2660 if (data.length == 0) { 2661 return; 2662 } 2663 2664 String proxyHost = data[0]; 2665 int proxyPort = 8080; 2666 if (data.length > 1) { 2667 try { 2668 proxyPort = Integer.parseInt(data[1]); 2669 } catch (NumberFormatException e) { 2670 return; 2671 } 2672 } 2673 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2674 setGlobalProxy(p); 2675 } 2676 } 2677 2678 private void sendProxyBroadcast(ProxyInfo proxy) { 2679 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2680 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2681 if (DBG) log("sending Proxy Broadcast for " + proxy); 2682 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2683 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2684 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2685 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2686 final long ident = Binder.clearCallingIdentity(); 2687 try { 2688 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2689 } finally { 2690 Binder.restoreCallingIdentity(ident); 2691 } 2692 } 2693 2694 private static class SettingsObserver extends ContentObserver { 2695 private int mWhat; 2696 private Handler mHandler; 2697 SettingsObserver(Handler handler, int what) { 2698 super(handler); 2699 mHandler = handler; 2700 mWhat = what; 2701 } 2702 2703 void observe(Context context) { 2704 ContentResolver resolver = context.getContentResolver(); 2705 resolver.registerContentObserver(Settings.Global.getUriFor( 2706 Settings.Global.HTTP_PROXY), false, this); 2707 } 2708 2709 @Override 2710 public void onChange(boolean selfChange) { 2711 mHandler.obtainMessage(mWhat).sendToTarget(); 2712 } 2713 } 2714 2715 private static void log(String s) { 2716 Slog.d(TAG, s); 2717 } 2718 2719 private static void loge(String s) { 2720 Slog.e(TAG, s); 2721 } 2722 2723 int convertFeatureToNetworkType(int networkType, String feature) { 2724 int usedNetworkType = networkType; 2725 2726 if(networkType == ConnectivityManager.TYPE_MOBILE) { 2727 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 2728 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 2729 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 2730 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 2731 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 2732 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 2733 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 2734 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 2735 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 2736 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 2737 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 2738 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 2739 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 2740 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 2741 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 2742 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 2743 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 2744 } else { 2745 Slog.e(TAG, "Can't match any mobile netTracker!"); 2746 } 2747 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 2748 if (TextUtils.equals(feature, "p2p")) { 2749 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 2750 } else { 2751 Slog.e(TAG, "Can't match any wifi netTracker!"); 2752 } 2753 } else { 2754 Slog.e(TAG, "Unexpected network type"); 2755 } 2756 return usedNetworkType; 2757 } 2758 2759 private static <T> T checkNotNull(T value, String message) { 2760 if (value == null) { 2761 throw new NullPointerException(message); 2762 } 2763 return value; 2764 } 2765 2766 /** 2767 * Prepare for a VPN application. This method is used by VpnDialogs 2768 * and not available in ConnectivityManager. Permissions are checked 2769 * in Vpn class. 2770 * @hide 2771 */ 2772 @Override 2773 public boolean prepareVpn(String oldPackage, String newPackage) { 2774 throwIfLockdownEnabled(); 2775 int user = UserHandle.getUserId(Binder.getCallingUid()); 2776 synchronized(mVpns) { 2777 return mVpns.get(user).prepare(oldPackage, newPackage); 2778 } 2779 } 2780 2781 /** 2782 * Set whether the current VPN package has the ability to launch VPNs without 2783 * user intervention. This method is used by system UIs and not available 2784 * in ConnectivityManager. Permissions are checked in Vpn class. 2785 * @hide 2786 */ 2787 @Override 2788 public void setVpnPackageAuthorization(boolean authorized) { 2789 int user = UserHandle.getUserId(Binder.getCallingUid()); 2790 synchronized(mVpns) { 2791 mVpns.get(user).setPackageAuthorization(authorized); 2792 } 2793 } 2794 2795 /** 2796 * Configure a TUN interface and return its file descriptor. Parameters 2797 * are encoded and opaque to this class. This method is used by VpnBuilder 2798 * and not available in ConnectivityManager. Permissions are checked in 2799 * Vpn class. 2800 * @hide 2801 */ 2802 @Override 2803 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2804 throwIfLockdownEnabled(); 2805 int user = UserHandle.getUserId(Binder.getCallingUid()); 2806 synchronized(mVpns) { 2807 return mVpns.get(user).establish(config); 2808 } 2809 } 2810 2811 /** 2812 * Start legacy VPN, controlling native daemons as needed. Creates a 2813 * secondary thread to perform connection work, returning quickly. 2814 */ 2815 @Override 2816 public void startLegacyVpn(VpnProfile profile) { 2817 throwIfLockdownEnabled(); 2818 final LinkProperties egress = getActiveLinkProperties(); 2819 if (egress == null) { 2820 throw new IllegalStateException("Missing active network connection"); 2821 } 2822 int user = UserHandle.getUserId(Binder.getCallingUid()); 2823 synchronized(mVpns) { 2824 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2825 } 2826 } 2827 2828 /** 2829 * Return the information of the ongoing legacy VPN. This method is used 2830 * by VpnSettings and not available in ConnectivityManager. Permissions 2831 * are checked in Vpn class. 2832 * @hide 2833 */ 2834 @Override 2835 public LegacyVpnInfo getLegacyVpnInfo() { 2836 throwIfLockdownEnabled(); 2837 int user = UserHandle.getUserId(Binder.getCallingUid()); 2838 synchronized(mVpns) { 2839 return mVpns.get(user).getLegacyVpnInfo(); 2840 } 2841 } 2842 2843 /** 2844 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2845 * not available in ConnectivityManager. 2846 * Permissions are checked in Vpn class. 2847 * @hide 2848 */ 2849 @Override 2850 public VpnConfig getVpnConfig() { 2851 int user = UserHandle.getUserId(Binder.getCallingUid()); 2852 synchronized(mVpns) { 2853 return mVpns.get(user).getVpnConfig(); 2854 } 2855 } 2856 2857 @Override 2858 public boolean updateLockdownVpn() { 2859 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2860 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2861 return false; 2862 } 2863 2864 // Tear down existing lockdown if profile was removed 2865 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2866 if (mLockdownEnabled) { 2867 if (!mKeyStore.isUnlocked()) { 2868 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2869 return false; 2870 } 2871 2872 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2873 final VpnProfile profile = VpnProfile.decode( 2874 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2875 int user = UserHandle.getUserId(Binder.getCallingUid()); 2876 synchronized(mVpns) { 2877 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2878 profile)); 2879 } 2880 } else { 2881 setLockdownTracker(null); 2882 } 2883 2884 return true; 2885 } 2886 2887 /** 2888 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2889 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2890 */ 2891 private void setLockdownTracker(LockdownVpnTracker tracker) { 2892 // Shutdown any existing tracker 2893 final LockdownVpnTracker existing = mLockdownTracker; 2894 mLockdownTracker = null; 2895 if (existing != null) { 2896 existing.shutdown(); 2897 } 2898 2899 try { 2900 if (tracker != null) { 2901 mNetd.setFirewallEnabled(true); 2902 mNetd.setFirewallInterfaceRule("lo", true); 2903 mLockdownTracker = tracker; 2904 mLockdownTracker.init(); 2905 } else { 2906 mNetd.setFirewallEnabled(false); 2907 } 2908 } catch (RemoteException e) { 2909 // ignored; NMS lives inside system_server 2910 } 2911 } 2912 2913 private void throwIfLockdownEnabled() { 2914 if (mLockdownEnabled) { 2915 throw new IllegalStateException("Unavailable in lockdown mode"); 2916 } 2917 } 2918 2919 public void supplyMessenger(int networkType, Messenger messenger) { 2920 enforceConnectivityInternalPermission(); 2921 2922 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2923 mNetTrackers[networkType].supplyMessenger(messenger); 2924 } 2925 } 2926 2927 public int findConnectionTypeForIface(String iface) { 2928 enforceConnectivityInternalPermission(); 2929 2930 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2931 2932 synchronized(mNetworkForNetId) { 2933 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2934 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2935 LinkProperties lp = nai.linkProperties; 2936 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2937 return nai.networkInfo.getType(); 2938 } 2939 } 2940 } 2941 return ConnectivityManager.TYPE_NONE; 2942 } 2943 2944 /** 2945 * Have mobile data fail fast if enabled. 2946 * 2947 * @param enabled DctConstants.ENABLED/DISABLED 2948 */ 2949 private void setEnableFailFastMobileData(int enabled) { 2950 int tag; 2951 2952 if (enabled == DctConstants.ENABLED) { 2953 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 2954 } else { 2955 tag = mEnableFailFastMobileDataTag.get(); 2956 } 2957 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 2958 enabled)); 2959 } 2960 2961 private boolean isMobileDataStateTrackerReady() { 2962 MobileDataStateTracker mdst = 2963 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 2964 return (mdst != null) && (mdst.isReady()); 2965 } 2966 2967 /** 2968 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 2969 */ 2970 2971 /** 2972 * No connection was possible to the network. 2973 * This is NOT a warm sim. 2974 */ 2975 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 2976 2977 /** 2978 * A connection was made to the internet, all is well. 2979 * This is NOT a warm sim. 2980 */ 2981 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 2982 2983 /** 2984 * A connection was made but no dns server was available to resolve a name to address. 2985 * This is NOT a warm sim since provisioning network is supported. 2986 */ 2987 private static final int CMP_RESULT_CODE_NO_DNS = 2; 2988 2989 /** 2990 * A connection was made but could not open a TCP connection. 2991 * This is NOT a warm sim since provisioning network is supported. 2992 */ 2993 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 2994 2995 /** 2996 * A connection was made but there was a redirection, we appear to be in walled garden. 2997 * This is an indication of a warm sim on a mobile network such as T-Mobile. 2998 */ 2999 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 3000 3001 /** 3002 * The mobile network is a provisioning network. 3003 * This is an indication of a warm sim on a mobile network such as AT&T. 3004 */ 3005 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 3006 3007 /** 3008 * The mobile network is provisioning 3009 */ 3010 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 3011 3012 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 3013 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 3014 3015 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 3016 3017 @Override 3018 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3019 int timeOutMs = -1; 3020 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 3021 enforceConnectivityInternalPermission(); 3022 3023 final long token = Binder.clearCallingIdentity(); 3024 try { 3025 timeOutMs = suggestedTimeOutMs; 3026 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 3027 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 3028 } 3029 3030 // Check that mobile networks are supported 3031 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 3032 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 3033 if (DBG) log("checkMobileProvisioning: X no mobile network"); 3034 return timeOutMs; 3035 } 3036 3037 // If we're already checking don't do it again 3038 // TODO: Add a queue of results... 3039 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 3040 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 3041 return timeOutMs; 3042 } 3043 3044 // Start off with mobile notification off 3045 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3046 3047 CheckMp checkMp = new CheckMp(mContext, this); 3048 CheckMp.CallBack cb = new CheckMp.CallBack() { 3049 @Override 3050 void onComplete(Integer result) { 3051 if (DBG) log("CheckMp.onComplete: result=" + result); 3052 NetworkInfo ni = 3053 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 3054 switch(result) { 3055 case CMP_RESULT_CODE_CONNECTABLE: 3056 case CMP_RESULT_CODE_NO_CONNECTION: 3057 case CMP_RESULT_CODE_NO_DNS: 3058 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 3059 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 3060 break; 3061 } 3062 case CMP_RESULT_CODE_REDIRECTED: { 3063 if (DBG) log("CheckMp.onComplete: warm sim"); 3064 String url = getMobileProvisioningUrl(); 3065 if (TextUtils.isEmpty(url)) { 3066 url = getMobileRedirectedProvisioningUrl(); 3067 } 3068 if (TextUtils.isEmpty(url) == false) { 3069 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 3070 setProvNotificationVisible(true, 3071 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3072 url); 3073 } else { 3074 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 3075 } 3076 break; 3077 } 3078 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 3079 String url = getMobileProvisioningUrl(); 3080 if (TextUtils.isEmpty(url) == false) { 3081 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 3082 setProvNotificationVisible(true, 3083 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3084 url); 3085 // Mark that we've got a provisioning network and 3086 // Disable Mobile Data until user actually starts provisioning. 3087 mIsProvisioningNetwork.set(true); 3088 MobileDataStateTracker mdst = (MobileDataStateTracker) 3089 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3090 3091 // Disable radio until user starts provisioning 3092 mdst.setRadio(false); 3093 } else { 3094 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 3095 } 3096 break; 3097 } 3098 case CMP_RESULT_CODE_IS_PROVISIONING: { 3099 // FIXME: Need to know when provisioning is done. Probably we can 3100 // check the completion status if successful we're done if we 3101 // "timedout" or still connected to provisioning APN turn off data? 3102 if (DBG) log("CheckMp.onComplete: provisioning started"); 3103 mIsStartingProvisioning.set(false); 3104 break; 3105 } 3106 default: { 3107 loge("CheckMp.onComplete: ignore unexpected result=" + result); 3108 break; 3109 } 3110 } 3111 mIsCheckingMobileProvisioning.set(false); 3112 } 3113 }; 3114 CheckMp.Params params = 3115 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 3116 if (DBG) log("checkMobileProvisioning: params=" + params); 3117 // TODO: Reenable when calls to the now defunct 3118 // MobileDataStateTracker.isProvisioningNetwork() are removed. 3119 // This code should be moved to the Telephony code. 3120 // checkMp.execute(params); 3121 } finally { 3122 Binder.restoreCallingIdentity(token); 3123 if (DBG) log("checkMobileProvisioning: X"); 3124 } 3125 return timeOutMs; 3126 } 3127 3128 static class CheckMp extends 3129 AsyncTask<CheckMp.Params, Void, Integer> { 3130 private static final String CHECKMP_TAG = "CheckMp"; 3131 3132 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 3133 private static boolean mTestingFailures; 3134 3135 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 3136 private static final int MAX_LOOPS = 4; 3137 3138 // Number of milli-seconds to complete all of the retires 3139 public static final int MAX_TIMEOUT_MS = 60000; 3140 3141 // The socket should retry only 5 seconds, the default is longer 3142 private static final int SOCKET_TIMEOUT_MS = 5000; 3143 3144 // Sleep time for network errors 3145 private static final int NET_ERROR_SLEEP_SEC = 3; 3146 3147 // Sleep time for network route establishment 3148 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 3149 3150 // Short sleep time for polling :( 3151 private static final int POLLING_SLEEP_SEC = 1; 3152 3153 private Context mContext; 3154 private ConnectivityService mCs; 3155 private TelephonyManager mTm; 3156 private Params mParams; 3157 3158 /** 3159 * Parameters for AsyncTask.execute 3160 */ 3161 static class Params { 3162 private String mUrl; 3163 private long mTimeOutMs; 3164 private CallBack mCb; 3165 3166 Params(String url, long timeOutMs, CallBack cb) { 3167 mUrl = url; 3168 mTimeOutMs = timeOutMs; 3169 mCb = cb; 3170 } 3171 3172 @Override 3173 public String toString() { 3174 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 3175 } 3176 } 3177 3178 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 3179 // issued by name or ip address, for Google its by name so when we construct 3180 // this HostnameVerifier we'll pass the original Uri and use it to verify 3181 // the host. If the host name in the original uril fails we'll test the 3182 // hostname parameter just incase things change. 3183 static class CheckMpHostnameVerifier implements HostnameVerifier { 3184 Uri mOrgUri; 3185 3186 CheckMpHostnameVerifier(Uri orgUri) { 3187 mOrgUri = orgUri; 3188 } 3189 3190 @Override 3191 public boolean verify(String hostname, SSLSession session) { 3192 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 3193 String orgUriHost = mOrgUri.getHost(); 3194 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 3195 if (DBG) { 3196 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 3197 + " orgUriHost=" + orgUriHost); 3198 } 3199 return retVal; 3200 } 3201 } 3202 3203 /** 3204 * The call back object passed in Params. onComplete will be called 3205 * on the main thread. 3206 */ 3207 abstract static class CallBack { 3208 // Called on the main thread. 3209 abstract void onComplete(Integer result); 3210 } 3211 3212 public CheckMp(Context context, ConnectivityService cs) { 3213 if (Build.IS_DEBUGGABLE) { 3214 mTestingFailures = 3215 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 3216 } else { 3217 mTestingFailures = false; 3218 } 3219 3220 mContext = context; 3221 mCs = cs; 3222 3223 // Setup access to TelephonyService we'll be using. 3224 mTm = (TelephonyManager) mContext.getSystemService( 3225 Context.TELEPHONY_SERVICE); 3226 } 3227 3228 /** 3229 * Get the default url to use for the test. 3230 */ 3231 public String getDefaultUrl() { 3232 // See http://go/clientsdns for usage approval 3233 String server = Settings.Global.getString(mContext.getContentResolver(), 3234 Settings.Global.CAPTIVE_PORTAL_SERVER); 3235 if (server == null) { 3236 server = "clients3.google.com"; 3237 } 3238 return "http://" + server + "/generate_204"; 3239 } 3240 3241 /** 3242 * Detect if its possible to connect to the http url. DNS based detection techniques 3243 * do not work at all hotspots. The best way to check is to perform a request to 3244 * a known address that fetches the data we expect. 3245 */ 3246 private synchronized Integer isMobileOk(Params params) { 3247 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 3248 Uri orgUri = Uri.parse(params.mUrl); 3249 Random rand = new Random(); 3250 mParams = params; 3251 3252 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 3253 result = CMP_RESULT_CODE_NO_CONNECTION; 3254 log("isMobileOk: X not mobile capable result=" + result); 3255 return result; 3256 } 3257 3258 if (mCs.mIsStartingProvisioning.get()) { 3259 result = CMP_RESULT_CODE_IS_PROVISIONING; 3260 log("isMobileOk: X is provisioning result=" + result); 3261 return result; 3262 } 3263 3264 // See if we've already determined we've got a provisioning connection, 3265 // if so we don't need to do anything active. 3266 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 3267 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3268 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 3269 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 3270 3271 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 3272 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3273 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 3274 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 3275 3276 if (isDefaultProvisioning || isHipriProvisioning) { 3277 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3278 log("isMobileOk: X default || hipri is provisioning result=" + result); 3279 return result; 3280 } 3281 3282 try { 3283 // Continue trying to connect until time has run out 3284 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 3285 3286 if (!mCs.isMobileDataStateTrackerReady()) { 3287 // Wait for MobileDataStateTracker to be ready. 3288 if (DBG) log("isMobileOk: mdst is not ready"); 3289 while(SystemClock.elapsedRealtime() < endTime) { 3290 if (mCs.isMobileDataStateTrackerReady()) { 3291 // Enable fail fast as we'll do retries here and use a 3292 // hipri connection so the default connection stays active. 3293 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 3294 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 3295 break; 3296 } 3297 sleep(POLLING_SLEEP_SEC); 3298 } 3299 } 3300 3301 log("isMobileOk: start hipri url=" + params.mUrl); 3302 3303 // First wait until we can start using hipri 3304 Binder binder = new Binder(); 3305/* 3306 while(SystemClock.elapsedRealtime() < endTime) { 3307 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3308 Phone.FEATURE_ENABLE_HIPRI, binder); 3309 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 3310 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 3311 log("isMobileOk: hipri started"); 3312 break; 3313 } 3314 if (VDBG) log("isMobileOk: hipri not started yet"); 3315 result = CMP_RESULT_CODE_NO_CONNECTION; 3316 sleep(POLLING_SLEEP_SEC); 3317 } 3318*/ 3319 // Continue trying to connect until time has run out 3320 while(SystemClock.elapsedRealtime() < endTime) { 3321 try { 3322 // Wait for hipri to connect. 3323 // TODO: Don't poll and handle situation where hipri fails 3324 // because default is retrying. See b/9569540 3325 NetworkInfo.State state = mCs 3326 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3327 if (state != NetworkInfo.State.CONNECTED) { 3328 if (true/*VDBG*/) { 3329 log("isMobileOk: not connected ni=" + 3330 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3331 } 3332 sleep(POLLING_SLEEP_SEC); 3333 result = CMP_RESULT_CODE_NO_CONNECTION; 3334 continue; 3335 } 3336 3337 // Hipri has started check if this is a provisioning url 3338 MobileDataStateTracker mdst = (MobileDataStateTracker) 3339 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3340 if (mdst.isProvisioningNetwork()) { 3341 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3342 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 3343 return result; 3344 } else { 3345 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 3346 } 3347 3348 // Get of the addresses associated with the url host. We need to use the 3349 // address otherwise HttpURLConnection object will use the name to get 3350 // the addresses and will try every address but that will bypass the 3351 // route to host we setup and the connection could succeed as the default 3352 // interface might be connected to the internet via wifi or other interface. 3353 InetAddress[] addresses; 3354 try { 3355 addresses = InetAddress.getAllByName(orgUri.getHost()); 3356 } catch (UnknownHostException e) { 3357 result = CMP_RESULT_CODE_NO_DNS; 3358 log("isMobileOk: X UnknownHostException result=" + result); 3359 return result; 3360 } 3361 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 3362 3363 // Get the type of addresses supported by this link 3364 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 3365 ConnectivityManager.TYPE_MOBILE_HIPRI); 3366 boolean linkHasIpv4 = lp.hasIPv4Address(); 3367 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 3368 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 3369 + " linkHasIpv6=" + linkHasIpv6); 3370 3371 final ArrayList<InetAddress> validAddresses = 3372 new ArrayList<InetAddress>(addresses.length); 3373 3374 for (InetAddress addr : addresses) { 3375 if (((addr instanceof Inet4Address) && linkHasIpv4) || 3376 ((addr instanceof Inet6Address) && linkHasIpv6)) { 3377 validAddresses.add(addr); 3378 } 3379 } 3380 3381 if (validAddresses.size() == 0) { 3382 return CMP_RESULT_CODE_NO_CONNECTION; 3383 } 3384 3385 int addrTried = 0; 3386 while (true) { 3387 // Loop through at most MAX_LOOPS valid addresses or until 3388 // we run out of time 3389 if (addrTried++ >= MAX_LOOPS) { 3390 log("isMobileOk: too many loops tried - giving up"); 3391 break; 3392 } 3393 if (SystemClock.elapsedRealtime() >= endTime) { 3394 log("isMobileOk: spend too much time - giving up"); 3395 break; 3396 } 3397 3398 InetAddress hostAddr = validAddresses.get(rand.nextInt( 3399 validAddresses.size())); 3400 3401 // Make a route to host so we check the specific interface. 3402 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 3403 hostAddr.getAddress())) { 3404 // Wait a short time to be sure the route is established ?? 3405 log("isMobileOk:" 3406 + " wait to establish route to hostAddr=" + hostAddr); 3407 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 3408 } else { 3409 log("isMobileOk:" 3410 + " could not establish route to hostAddr=" + hostAddr); 3411 // Wait a short time before the next attempt 3412 sleep(NET_ERROR_SLEEP_SEC); 3413 continue; 3414 } 3415 3416 // Rewrite the url to have numeric address to use the specific route 3417 // using http for half the attempts and https for the other half. 3418 // Doing https first and http second as on a redirected walled garden 3419 // such as t-mobile uses we get a SocketTimeoutException: "SSL 3420 // handshake timed out" which we declare as 3421 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 3422 // having http second we will be using logic used for some time. 3423 URL newUrl; 3424 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 3425 newUrl = new URL(scheme, hostAddr.getHostAddress(), 3426 orgUri.getPath()); 3427 log("isMobileOk: newUrl=" + newUrl); 3428 3429 HttpURLConnection urlConn = null; 3430 try { 3431 // Open the connection set the request headers and get the response 3432 urlConn = (HttpURLConnection)newUrl.openConnection( 3433 java.net.Proxy.NO_PROXY); 3434 if (scheme.equals("https")) { 3435 ((HttpsURLConnection)urlConn).setHostnameVerifier( 3436 new CheckMpHostnameVerifier(orgUri)); 3437 } 3438 urlConn.setInstanceFollowRedirects(false); 3439 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 3440 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 3441 urlConn.setUseCaches(false); 3442 urlConn.setAllowUserInteraction(false); 3443 // Set the "Connection" to "Close" as by default "Keep-Alive" 3444 // is used which is useless in this case. 3445 urlConn.setRequestProperty("Connection", "close"); 3446 int responseCode = urlConn.getResponseCode(); 3447 3448 // For debug display the headers 3449 Map<String, List<String>> headers = urlConn.getHeaderFields(); 3450 log("isMobileOk: headers=" + headers); 3451 3452 // Close the connection 3453 urlConn.disconnect(); 3454 urlConn = null; 3455 3456 if (mTestingFailures) { 3457 // Pretend no connection, this tests using http and https 3458 result = CMP_RESULT_CODE_NO_CONNECTION; 3459 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 3460 continue; 3461 } 3462 3463 if (responseCode == 204) { 3464 // Return 3465 result = CMP_RESULT_CODE_CONNECTABLE; 3466 log("isMobileOk: X got expected responseCode=" + responseCode 3467 + " result=" + result); 3468 return result; 3469 } else { 3470 // Retry to be sure this was redirected, we've gotten 3471 // occasions where a server returned 200 even though 3472 // the device didn't have a "warm" sim. 3473 log("isMobileOk: not expected responseCode=" + responseCode); 3474 // TODO - it would be nice in the single-address case to do 3475 // another DNS resolve here, but flushing the cache is a bit 3476 // heavy-handed. 3477 result = CMP_RESULT_CODE_REDIRECTED; 3478 } 3479 } catch (Exception e) { 3480 log("isMobileOk: HttpURLConnection Exception" + e); 3481 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 3482 if (urlConn != null) { 3483 urlConn.disconnect(); 3484 urlConn = null; 3485 } 3486 sleep(NET_ERROR_SLEEP_SEC); 3487 continue; 3488 } 3489 } 3490 log("isMobileOk: X loops|timed out result=" + result); 3491 return result; 3492 } catch (Exception e) { 3493 log("isMobileOk: Exception e=" + e); 3494 continue; 3495 } 3496 } 3497 log("isMobileOk: timed out"); 3498 } finally { 3499 log("isMobileOk: F stop hipri"); 3500 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 3501// mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3502// Phone.FEATURE_ENABLE_HIPRI); 3503 3504 // Wait for hipri to disconnect. 3505 long endTime = SystemClock.elapsedRealtime() + 5000; 3506 3507 while(SystemClock.elapsedRealtime() < endTime) { 3508 NetworkInfo.State state = mCs 3509 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3510 if (state != NetworkInfo.State.DISCONNECTED) { 3511 if (VDBG) { 3512 log("isMobileOk: connected ni=" + 3513 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3514 } 3515 sleep(POLLING_SLEEP_SEC); 3516 continue; 3517 } 3518 } 3519 3520 log("isMobileOk: X result=" + result); 3521 } 3522 return result; 3523 } 3524 3525 @Override 3526 protected Integer doInBackground(Params... params) { 3527 return isMobileOk(params[0]); 3528 } 3529 3530 @Override 3531 protected void onPostExecute(Integer result) { 3532 log("onPostExecute: result=" + result); 3533 if ((mParams != null) && (mParams.mCb != null)) { 3534 mParams.mCb.onComplete(result); 3535 } 3536 } 3537 3538 private String inetAddressesToString(InetAddress[] addresses) { 3539 StringBuffer sb = new StringBuffer(); 3540 boolean firstTime = true; 3541 for(InetAddress addr : addresses) { 3542 if (firstTime) { 3543 firstTime = false; 3544 } else { 3545 sb.append(","); 3546 } 3547 sb.append(addr); 3548 } 3549 return sb.toString(); 3550 } 3551 3552 private void printNetworkInfo() { 3553 boolean hasIccCard = mTm.hasIccCard(); 3554 int simState = mTm.getSimState(); 3555 log("hasIccCard=" + hasIccCard 3556 + " simState=" + simState); 3557 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 3558 if (ni != null) { 3559 log("ni.length=" + ni.length); 3560 for (NetworkInfo netInfo: ni) { 3561 log("netInfo=" + netInfo.toString()); 3562 } 3563 } else { 3564 log("no network info ni=null"); 3565 } 3566 } 3567 3568 /** 3569 * Sleep for a few seconds then return. 3570 * @param seconds 3571 */ 3572 private static void sleep(int seconds) { 3573 long stopTime = System.nanoTime() + (seconds * 1000000000); 3574 long sleepTime; 3575 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 3576 try { 3577 Thread.sleep(sleepTime / 1000000); 3578 } catch (InterruptedException ignored) { 3579 } 3580 } 3581 } 3582 3583 private static void log(String s) { 3584 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 3585 } 3586 } 3587 3588 // TODO: Move to ConnectivityManager and make public? 3589 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 3590 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 3591 3592 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 3593 @Override 3594 public void onReceive(Context context, Intent intent) { 3595 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 3596 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 3597 } 3598 } 3599 }; 3600 3601 private void handleMobileProvisioningAction(String url) { 3602 // Mark notification as not visible 3603 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3604 3605 // Check airplane mode 3606 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 3607 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 3608 // If provisioning network and not in airplane mode handle as a special case, 3609 // otherwise launch browser with the intent directly. 3610 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 3611 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 3612 mIsProvisioningNetwork.set(false); 3613// mIsStartingProvisioning.set(true); 3614// MobileDataStateTracker mdst = (MobileDataStateTracker) 3615// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3616 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 3617// mdst.setRadio(true); 3618// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 3619// mdst.enableMobileProvisioning(url); 3620 } else { 3621 if (DBG) log("handleMobileProvisioningAction: not prov network"); 3622 mIsProvisioningNetwork.set(false); 3623 // Check for apps that can handle provisioning first 3624 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 3625 List<String> carrierPackages = 3626 mTelephonyManager.getCarrierPackageNamesForIntent(provisioningIntent); 3627 if (carrierPackages != null && !carrierPackages.isEmpty()) { 3628 if (carrierPackages.size() != 1) { 3629 if (DBG) log("Multiple matching carrier apps found, launching the first."); 3630 } 3631 provisioningIntent.setPackage(carrierPackages.get(0)); 3632 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3633 Intent.FLAG_ACTIVITY_NEW_TASK); 3634 mContext.startActivity(provisioningIntent); 3635 } else { 3636 // If no apps exist, use standard URL ACTION_VIEW method 3637 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 3638 Intent.CATEGORY_APP_BROWSER); 3639 newIntent.setData(Uri.parse(url)); 3640 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3641 Intent.FLAG_ACTIVITY_NEW_TASK); 3642 try { 3643 mContext.startActivity(newIntent); 3644 } catch (ActivityNotFoundException e) { 3645 loge("handleMobileProvisioningAction: startActivity failed" + e); 3646 } 3647 } 3648 } 3649 } 3650 3651 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3652 private volatile boolean mIsNotificationVisible = false; 3653 3654 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 3655 String url) { 3656 if (DBG) { 3657 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3658 + " extraInfo=" + extraInfo + " url=" + url); 3659 } 3660 Intent intent = null; 3661 PendingIntent pendingIntent = null; 3662 if (visible) { 3663 switch (networkType) { 3664 case ConnectivityManager.TYPE_WIFI: 3665 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3666 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3667 Intent.FLAG_ACTIVITY_NEW_TASK); 3668 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3669 break; 3670 case ConnectivityManager.TYPE_MOBILE: 3671 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3672 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 3673 intent.putExtra("EXTRA_URL", url); 3674 intent.setFlags(0); 3675 pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3676 break; 3677 default: 3678 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3679 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3680 Intent.FLAG_ACTIVITY_NEW_TASK); 3681 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3682 break; 3683 } 3684 } 3685 // Concatenate the range of types onto the range of NetIDs. 3686 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3687 setProvNotificationVisibleIntent(visible, id, networkType, extraInfo, pendingIntent); 3688 } 3689 3690 /** 3691 * Show or hide network provisioning notificaitons. 3692 * 3693 * @param id an identifier that uniquely identifies this notification. This must match 3694 * between show and hide calls. We use the NetID value but for legacy callers 3695 * we concatenate the range of types with the range of NetIDs. 3696 */ 3697 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3698 String extraInfo, PendingIntent intent) { 3699 if (DBG) { 3700 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3701 networkType + " extraInfo=" + extraInfo); 3702 } 3703 3704 Resources r = Resources.getSystem(); 3705 NotificationManager notificationManager = (NotificationManager) mContext 3706 .getSystemService(Context.NOTIFICATION_SERVICE); 3707 3708 if (visible) { 3709 CharSequence title; 3710 CharSequence details; 3711 int icon; 3712 Notification notification = new Notification(); 3713 switch (networkType) { 3714 case ConnectivityManager.TYPE_WIFI: 3715 title = r.getString(R.string.wifi_available_sign_in, 0); 3716 details = r.getString(R.string.network_available_sign_in_detailed, 3717 extraInfo); 3718 icon = R.drawable.stat_notify_wifi_in_range; 3719 break; 3720 case ConnectivityManager.TYPE_MOBILE: 3721 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3722 title = r.getString(R.string.network_available_sign_in, 0); 3723 // TODO: Change this to pull from NetworkInfo once a printable 3724 // name has been added to it 3725 details = mTelephonyManager.getNetworkOperatorName(); 3726 icon = R.drawable.stat_notify_rssi_in_range; 3727 break; 3728 default: 3729 title = r.getString(R.string.network_available_sign_in, 0); 3730 details = r.getString(R.string.network_available_sign_in_detailed, 3731 extraInfo); 3732 icon = R.drawable.stat_notify_rssi_in_range; 3733 break; 3734 } 3735 3736 notification.when = 0; 3737 notification.icon = icon; 3738 notification.flags = Notification.FLAG_AUTO_CANCEL; 3739 notification.tickerText = title; 3740 notification.color = mContext.getResources().getColor( 3741 com.android.internal.R.color.system_notification_accent_color); 3742 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3743 notification.contentIntent = intent; 3744 3745 try { 3746 notificationManager.notify(NOTIFICATION_ID, id, notification); 3747 } catch (NullPointerException npe) { 3748 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3749 npe.printStackTrace(); 3750 } 3751 } else { 3752 try { 3753 notificationManager.cancel(NOTIFICATION_ID, id); 3754 } catch (NullPointerException npe) { 3755 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3756 npe.printStackTrace(); 3757 } 3758 } 3759 mIsNotificationVisible = visible; 3760 } 3761 3762 /** Location to an updatable file listing carrier provisioning urls. 3763 * An example: 3764 * 3765 * <?xml version="1.0" encoding="utf-8"?> 3766 * <provisioningUrls> 3767 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3768 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3769 * </provisioningUrls> 3770 */ 3771 private static final String PROVISIONING_URL_PATH = 3772 "/data/misc/radio/provisioning_urls.xml"; 3773 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3774 3775 /** XML tag for root element. */ 3776 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3777 /** XML tag for individual url */ 3778 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3779 /** XML tag for redirected url */ 3780 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3781 /** XML attribute for mcc */ 3782 private static final String ATTR_MCC = "mcc"; 3783 /** XML attribute for mnc */ 3784 private static final String ATTR_MNC = "mnc"; 3785 3786 private static final int REDIRECTED_PROVISIONING = 1; 3787 private static final int PROVISIONING = 2; 3788 3789 private String getProvisioningUrlBaseFromFile(int type) { 3790 FileReader fileReader = null; 3791 XmlPullParser parser = null; 3792 Configuration config = mContext.getResources().getConfiguration(); 3793 String tagType; 3794 3795 switch (type) { 3796 case PROVISIONING: 3797 tagType = TAG_PROVISIONING_URL; 3798 break; 3799 case REDIRECTED_PROVISIONING: 3800 tagType = TAG_REDIRECTED_URL; 3801 break; 3802 default: 3803 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3804 type); 3805 } 3806 3807 try { 3808 fileReader = new FileReader(mProvisioningUrlFile); 3809 parser = Xml.newPullParser(); 3810 parser.setInput(fileReader); 3811 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3812 3813 while (true) { 3814 XmlUtils.nextElement(parser); 3815 3816 String element = parser.getName(); 3817 if (element == null) break; 3818 3819 if (element.equals(tagType)) { 3820 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3821 try { 3822 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3823 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3824 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3825 parser.next(); 3826 if (parser.getEventType() == XmlPullParser.TEXT) { 3827 return parser.getText(); 3828 } 3829 } 3830 } 3831 } catch (NumberFormatException e) { 3832 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3833 } 3834 } 3835 } 3836 return null; 3837 } catch (FileNotFoundException e) { 3838 loge("Carrier Provisioning Urls file not found"); 3839 } catch (XmlPullParserException e) { 3840 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3841 } catch (IOException e) { 3842 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3843 } finally { 3844 if (fileReader != null) { 3845 try { 3846 fileReader.close(); 3847 } catch (IOException e) {} 3848 } 3849 } 3850 return null; 3851 } 3852 3853 @Override 3854 public String getMobileRedirectedProvisioningUrl() { 3855 enforceConnectivityInternalPermission(); 3856 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3857 if (TextUtils.isEmpty(url)) { 3858 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3859 } 3860 return url; 3861 } 3862 3863 @Override 3864 public String getMobileProvisioningUrl() { 3865 enforceConnectivityInternalPermission(); 3866 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3867 if (TextUtils.isEmpty(url)) { 3868 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3869 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3870 } else { 3871 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3872 } 3873 // populate the iccid, imei and phone number in the provisioning url. 3874 if (!TextUtils.isEmpty(url)) { 3875 String phoneNumber = mTelephonyManager.getLine1Number(); 3876 if (TextUtils.isEmpty(phoneNumber)) { 3877 phoneNumber = "0000000000"; 3878 } 3879 url = String.format(url, 3880 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3881 mTelephonyManager.getDeviceId() /* IMEI */, 3882 phoneNumber /* Phone numer */); 3883 } 3884 3885 return url; 3886 } 3887 3888 @Override 3889 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3890 String extraInfo, String url) { 3891 enforceConnectivityInternalPermission(); 3892 setProvNotificationVisible(visible, networkType, extraInfo, url); 3893 } 3894 3895 @Override 3896 public void setAirplaneMode(boolean enable) { 3897 enforceConnectivityInternalPermission(); 3898 final long ident = Binder.clearCallingIdentity(); 3899 try { 3900 final ContentResolver cr = mContext.getContentResolver(); 3901 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3902 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3903 intent.putExtra("state", enable); 3904 mContext.sendBroadcast(intent); 3905 } finally { 3906 Binder.restoreCallingIdentity(ident); 3907 } 3908 } 3909 3910 private void onUserStart(int userId) { 3911 synchronized(mVpns) { 3912 Vpn userVpn = mVpns.get(userId); 3913 if (userVpn != null) { 3914 loge("Starting user already has a VPN"); 3915 return; 3916 } 3917 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3918 mVpns.put(userId, userVpn); 3919 } 3920 } 3921 3922 private void onUserStop(int userId) { 3923 synchronized(mVpns) { 3924 Vpn userVpn = mVpns.get(userId); 3925 if (userVpn == null) { 3926 loge("Stopping user has no VPN"); 3927 return; 3928 } 3929 mVpns.delete(userId); 3930 } 3931 } 3932 3933 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3934 @Override 3935 public void onReceive(Context context, Intent intent) { 3936 final String action = intent.getAction(); 3937 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3938 if (userId == UserHandle.USER_NULL) return; 3939 3940 if (Intent.ACTION_USER_STARTING.equals(action)) { 3941 onUserStart(userId); 3942 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3943 onUserStop(userId); 3944 } 3945 } 3946 }; 3947 3948 @Override 3949 public LinkQualityInfo getLinkQualityInfo(int networkType) { 3950 enforceAccessPermission(); 3951 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3952 return mNetTrackers[networkType].getLinkQualityInfo(); 3953 } else { 3954 return null; 3955 } 3956 } 3957 3958 @Override 3959 public LinkQualityInfo getActiveLinkQualityInfo() { 3960 enforceAccessPermission(); 3961 if (isNetworkTypeValid(mActiveDefaultNetwork) && 3962 mNetTrackers[mActiveDefaultNetwork] != null) { 3963 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 3964 } else { 3965 return null; 3966 } 3967 } 3968 3969 @Override 3970 public LinkQualityInfo[] getAllLinkQualityInfo() { 3971 enforceAccessPermission(); 3972 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 3973 for (NetworkStateTracker tracker : mNetTrackers) { 3974 if (tracker != null) { 3975 LinkQualityInfo li = tracker.getLinkQualityInfo(); 3976 if (li != null) { 3977 result.add(li); 3978 } 3979 } 3980 } 3981 3982 return result.toArray(new LinkQualityInfo[result.size()]); 3983 } 3984 3985 /* Infrastructure for network sampling */ 3986 3987 private void handleNetworkSamplingTimeout() { 3988 3989 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3990 3991 // initialize list of interfaces .. 3992 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3993 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3994 for (NetworkStateTracker tracker : mNetTrackers) { 3995 if (tracker != null) { 3996 String ifaceName = tracker.getNetworkInterfaceName(); 3997 if (ifaceName != null) { 3998 mapIfaceToSample.put(ifaceName, null); 3999 } 4000 } 4001 } 4002 4003 // Read samples for all interfaces 4004 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4005 4006 // process samples for all networks 4007 for (NetworkStateTracker tracker : mNetTrackers) { 4008 if (tracker != null) { 4009 String ifaceName = tracker.getNetworkInterfaceName(); 4010 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 4011 if (ss != null) { 4012 // end the previous sampling cycle 4013 tracker.stopSampling(ss); 4014 // start a new sampling cycle .. 4015 tracker.startSampling(ss); 4016 } 4017 } 4018 } 4019 4020 if (SAMPLE_DBG) log("Done."); 4021 4022 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 4023 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 4024 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 4025 4026 if (SAMPLE_DBG) { 4027 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 4028 } 4029 4030 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 4031 } 4032 4033 /** 4034 * Sets a network sampling alarm. 4035 */ 4036 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 4037 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 4038 int alarmType; 4039 if (Resources.getSystem().getBoolean( 4040 R.bool.config_networkSamplingWakesDevice)) { 4041 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 4042 } else { 4043 alarmType = AlarmManager.ELAPSED_REALTIME; 4044 } 4045 mAlarmManager.set(alarmType, wakeupTime, intent); 4046 } 4047 4048 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 4049 new HashMap<Messenger, NetworkFactoryInfo>(); 4050 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 4051 new HashMap<NetworkRequest, NetworkRequestInfo>(); 4052 4053 private static class NetworkFactoryInfo { 4054 public final String name; 4055 public final Messenger messenger; 4056 public final AsyncChannel asyncChannel; 4057 4058 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 4059 this.name = name; 4060 this.messenger = messenger; 4061 this.asyncChannel = asyncChannel; 4062 } 4063 } 4064 4065 /** 4066 * Tracks info about the requester. 4067 * Also used to notice when the calling process dies so we can self-expire 4068 */ 4069 private class NetworkRequestInfo implements IBinder.DeathRecipient { 4070 static final boolean REQUEST = true; 4071 static final boolean LISTEN = false; 4072 4073 final NetworkRequest request; 4074 IBinder mBinder; 4075 final int mPid; 4076 final int mUid; 4077 final Messenger messenger; 4078 final boolean isRequest; 4079 4080 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 4081 super(); 4082 messenger = m; 4083 request = r; 4084 mBinder = binder; 4085 mPid = getCallingPid(); 4086 mUid = getCallingUid(); 4087 this.isRequest = isRequest; 4088 4089 try { 4090 mBinder.linkToDeath(this, 0); 4091 } catch (RemoteException e) { 4092 binderDied(); 4093 } 4094 } 4095 4096 void unlinkDeathRecipient() { 4097 mBinder.unlinkToDeath(this, 0); 4098 } 4099 4100 public void binderDied() { 4101 log("ConnectivityService NetworkRequestInfo binderDied(" + 4102 request + ", " + mBinder + ")"); 4103 releaseNetworkRequest(request); 4104 } 4105 4106 public String toString() { 4107 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 4108 mPid + " for " + request; 4109 } 4110 } 4111 4112 @Override 4113 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 4114 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 4115 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 4116 == false) { 4117 enforceConnectivityInternalPermission(); 4118 } else { 4119 enforceChangePermission(); 4120 } 4121 4122 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4123 4124 // if UID is restricted, don't allow them to bring up metered APNs 4125 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 4126 == false) { 4127 final int uidRules; 4128 synchronized(mRulesLock) { 4129 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 4130 } 4131 if ((uidRules & RULE_REJECT_METERED) != 0) { 4132 // we could silently fail or we can filter the available nets to only give 4133 // them those they have access to. Chose the more useful 4134 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 4135 } 4136 } 4137 4138 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 4139 throw new IllegalArgumentException("Bad timeout specified"); 4140 } 4141 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 4142 nextNetworkRequestId()); 4143 if (DBG) log("requestNetwork for " + networkRequest); 4144 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4145 NetworkRequestInfo.REQUEST); 4146 4147 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 4148 if (timeoutMs > 0) { 4149 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 4150 nri), timeoutMs); 4151 } 4152 return networkRequest; 4153 } 4154 4155 @Override 4156 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4157 PendingIntent operation) { 4158 // TODO 4159 return null; 4160 } 4161 4162 @Override 4163 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4164 Messenger messenger, IBinder binder) { 4165 enforceAccessPermission(); 4166 4167 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 4168 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4169 if (DBG) log("listenForNetwork for " + networkRequest); 4170 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4171 NetworkRequestInfo.LISTEN); 4172 4173 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4174 return networkRequest; 4175 } 4176 4177 @Override 4178 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4179 PendingIntent operation) { 4180 } 4181 4182 @Override 4183 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4184 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4185 0, networkRequest)); 4186 } 4187 4188 @Override 4189 public void registerNetworkFactory(Messenger messenger, String name) { 4190 enforceConnectivityInternalPermission(); 4191 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4192 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4193 } 4194 4195 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4196 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4197 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4198 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4199 } 4200 4201 @Override 4202 public void unregisterNetworkFactory(Messenger messenger) { 4203 enforceConnectivityInternalPermission(); 4204 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4205 } 4206 4207 private void handleUnregisterNetworkFactory(Messenger messenger) { 4208 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4209 if (nfi == null) { 4210 loge("Failed to find Messenger in unregisterNetworkFactory"); 4211 return; 4212 } 4213 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4214 } 4215 4216 /** 4217 * NetworkAgentInfo supporting a request by requestId. 4218 * These have already been vetted (their Capabilities satisfy the request) 4219 * and the are the highest scored network available. 4220 * the are keyed off the Requests requestId. 4221 */ 4222 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4223 new SparseArray<NetworkAgentInfo>(); 4224 4225 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4226 new SparseArray<NetworkAgentInfo>(); 4227 4228 // NetworkAgentInfo keyed off its connecting messenger 4229 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4230 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4231 new HashMap<Messenger, NetworkAgentInfo>(); 4232 4233 private final NetworkRequest mDefaultRequest; 4234 4235 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4236 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 4237 } 4238 4239 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4240 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4241 int currentScore, NetworkMisc networkMisc) { 4242 enforceConnectivityInternalPermission(); 4243 4244 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4245 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 4246 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 4247 networkMisc); 4248 synchronized (this) { 4249 nai.networkMonitor.systemReady = mSystemReady; 4250 } 4251 if (DBG) log("registerNetworkAgent " + nai); 4252 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4253 } 4254 4255 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4256 if (VDBG) log("Got NetworkAgent Messenger"); 4257 mNetworkAgentInfos.put(na.messenger, na); 4258 assignNextNetId(na); 4259 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4260 NetworkInfo networkInfo = na.networkInfo; 4261 na.networkInfo = null; 4262 updateNetworkInfo(na, networkInfo); 4263 } 4264 4265 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4266 LinkProperties newLp = networkAgent.linkProperties; 4267 int netId = networkAgent.network.netId; 4268 4269 updateInterfaces(newLp, oldLp, netId); 4270 updateMtu(newLp, oldLp); 4271 updateTcpBufferSizes(networkAgent); 4272 // TODO - figure out what to do for clat 4273// for (LinkProperties lp : newLp.getStackedLinks()) { 4274// updateMtu(lp, null); 4275// } 4276 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 4277 updateDnses(newLp, oldLp, netId, flushDns); 4278 updateClat(newLp, oldLp, networkAgent); 4279 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 4280 } 4281 4282 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 4283 // Update 464xlat state. 4284 if (mClat.requiresClat(na)) { 4285 4286 // If the connection was previously using clat, but is not using it now, stop the clat 4287 // daemon. Normally, this happens automatically when the connection disconnects, but if 4288 // the disconnect is not reported, or if the connection's LinkProperties changed for 4289 // some other reason (e.g., handoff changes the IP addresses on the link), it would 4290 // still be running. If it's not running, then stopping it is a no-op. 4291 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 4292 mClat.stopClat(); 4293 } 4294 // If the link requires clat to be running, then start the daemon now. 4295 if (na.networkInfo.isConnected()) { 4296 mClat.startClat(na); 4297 } else { 4298 mClat.stopClat(); 4299 } 4300 } 4301 } 4302 4303 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4304 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4305 if (oldLp != null) { 4306 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4307 } else if (newLp != null) { 4308 interfaceDiff.added = newLp.getAllInterfaceNames(); 4309 } 4310 for (String iface : interfaceDiff.added) { 4311 try { 4312 if (DBG) log("Adding iface " + iface + " to network " + netId); 4313 mNetd.addInterfaceToNetwork(iface, netId); 4314 } catch (Exception e) { 4315 loge("Exception adding interface: " + e); 4316 } 4317 } 4318 for (String iface : interfaceDiff.removed) { 4319 try { 4320 if (DBG) log("Removing iface " + iface + " from network " + netId); 4321 mNetd.removeInterfaceFromNetwork(iface, netId); 4322 } catch (Exception e) { 4323 loge("Exception removing interface: " + e); 4324 } 4325 } 4326 } 4327 4328 /** 4329 * Have netd update routes from oldLp to newLp. 4330 * @return true if routes changed between oldLp and newLp 4331 */ 4332 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4333 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4334 if (oldLp != null) { 4335 routeDiff = oldLp.compareAllRoutes(newLp); 4336 } else if (newLp != null) { 4337 routeDiff.added = newLp.getAllRoutes(); 4338 } 4339 4340 // add routes before removing old in case it helps with continuous connectivity 4341 4342 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4343 for (RouteInfo route : routeDiff.added) { 4344 if (route.hasGateway()) continue; 4345 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4346 try { 4347 mNetd.addRoute(netId, route); 4348 } catch (Exception e) { 4349 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4350 loge("Exception in addRoute for non-gateway: " + e); 4351 } 4352 } 4353 } 4354 for (RouteInfo route : routeDiff.added) { 4355 if (route.hasGateway() == false) continue; 4356 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4357 try { 4358 mNetd.addRoute(netId, route); 4359 } catch (Exception e) { 4360 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4361 loge("Exception in addRoute for gateway: " + e); 4362 } 4363 } 4364 } 4365 4366 for (RouteInfo route : routeDiff.removed) { 4367 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4368 try { 4369 mNetd.removeRoute(netId, route); 4370 } catch (Exception e) { 4371 loge("Exception in removeRoute: " + e); 4372 } 4373 } 4374 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4375 } 4376 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) { 4377 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4378 Collection<InetAddress> dnses = newLp.getDnsServers(); 4379 if (dnses.size() == 0 && mDefaultDns != null) { 4380 dnses = new ArrayList(); 4381 dnses.add(mDefaultDns); 4382 if (DBG) { 4383 loge("no dns provided for netId " + netId + ", so using defaults"); 4384 } 4385 } 4386 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4387 try { 4388 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4389 newLp.getDomains()); 4390 } catch (Exception e) { 4391 loge("Exception in setDnsServersForNetwork: " + e); 4392 } 4393 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4394 if (defaultNai != null && defaultNai.network.netId == netId) { 4395 setDefaultDnsSystemProperties(dnses); 4396 } 4397 flushVmDnsCache(); 4398 } else if (flush) { 4399 try { 4400 mNetd.flushNetworkDnsCache(netId); 4401 } catch (Exception e) { 4402 loge("Exception in flushNetworkDnsCache: " + e); 4403 } 4404 flushVmDnsCache(); 4405 } 4406 } 4407 4408 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4409 int last = 0; 4410 for (InetAddress dns : dnses) { 4411 ++last; 4412 String key = "net.dns" + last; 4413 String value = dns.getHostAddress(); 4414 SystemProperties.set(key, value); 4415 } 4416 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4417 String key = "net.dns" + i; 4418 SystemProperties.set(key, ""); 4419 } 4420 mNumDnsEntries = last; 4421 } 4422 4423 4424 private void updateCapabilities(NetworkAgentInfo networkAgent, 4425 NetworkCapabilities networkCapabilities) { 4426 // TODO - what else here? Verify still satisfies everybody? 4427 // Check if satisfies somebody new? call callbacks? 4428 synchronized (networkAgent) { 4429 networkAgent.networkCapabilities = networkCapabilities; 4430 } 4431 } 4432 4433 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4434 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4435 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4436 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4437 networkRequest); 4438 } 4439 } 4440 4441 private void callCallbackForRequest(NetworkRequestInfo nri, 4442 NetworkAgentInfo networkAgent, int notificationType) { 4443 if (nri.messenger == null) return; // Default request has no msgr 4444 Object o; 4445 int a1 = 0; 4446 int a2 = 0; 4447 switch (notificationType) { 4448 case ConnectivityManager.CALLBACK_LOSING: 4449 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 4450 // fall through 4451 case ConnectivityManager.CALLBACK_PRECHECK: 4452 case ConnectivityManager.CALLBACK_AVAILABLE: 4453 case ConnectivityManager.CALLBACK_LOST: 4454 case ConnectivityManager.CALLBACK_CAP_CHANGED: 4455 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4456 o = new NetworkRequest(nri.request); 4457 a2 = networkAgent.network.netId; 4458 break; 4459 } 4460 case ConnectivityManager.CALLBACK_UNAVAIL: 4461 case ConnectivityManager.CALLBACK_RELEASED: { 4462 o = new NetworkRequest(nri.request); 4463 break; 4464 } 4465 default: { 4466 loge("Unknown notificationType " + notificationType); 4467 return; 4468 } 4469 } 4470 Message msg = Message.obtain(); 4471 msg.arg1 = a1; 4472 msg.arg2 = a2; 4473 msg.obj = o; 4474 msg.what = notificationType; 4475 try { 4476 if (VDBG) { 4477 log("sending notification " + notifyTypeToName(notificationType) + 4478 " for " + nri.request); 4479 } 4480 nri.messenger.send(msg); 4481 } catch (RemoteException e) { 4482 // may occur naturally in the race of binder death. 4483 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4484 } 4485 } 4486 4487 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4488 if (oldNetwork == null) { 4489 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4490 return; 4491 } 4492 if (DBG) { 4493 log("handleLingerComplete for " + oldNetwork.name()); 4494 for (int i = 0; i < oldNetwork.networkRequests.size(); i++) { 4495 NetworkRequest nr = oldNetwork.networkRequests.valueAt(i); 4496 // Ignore listening requests. 4497 if (mNetworkRequests.get(nr).isRequest == false) continue; 4498 loge("Dead network still had at least " + nr); 4499 break; 4500 } 4501 } 4502 oldNetwork.asyncChannel.disconnect(); 4503 } 4504 4505 private void makeDefault(NetworkAgentInfo newNetwork) { 4506 if (DBG) log("Switching to new default network: " + newNetwork); 4507 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4508 setupDataActivityTracking(newNetwork); 4509 try { 4510 mNetd.setDefaultNetId(newNetwork.network.netId); 4511 } catch (Exception e) { 4512 loge("Exception setting default network :" + e); 4513 } 4514 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4515 updateTcpBufferSizes(newNetwork); 4516 } 4517 4518 // Handles a network appearing or improving its score. 4519 // 4520 // - Evaluates all current NetworkRequests that can be 4521 // satisfied by newNetwork, and reassigns to newNetwork 4522 // any such requests for which newNetwork is the best. 4523 // 4524 // - Tears down any Networks that as a result are no longer 4525 // needed. A network is needed if it is the best network for 4526 // one or more NetworkRequests, or if it is a VPN. 4527 // 4528 // - Tears down newNetwork if it is validated but turns out to be 4529 // unneeded. Does not tear down newNetwork if it is 4530 // unvalidated, because future validation may improve 4531 // newNetwork's score enough that it is needed. 4532 // 4533 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4534 // it does not remove NetworkRequests that other Networks could better satisfy. 4535 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4536 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4537 // as it performs better by a factor of the number of Networks. 4538 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork) { 4539 boolean keep = newNetwork.isVPN(); 4540 boolean isNewDefault = false; 4541 if (DBG) log("rematching " + newNetwork.name()); 4542 // Find and migrate to this Network any NetworkRequests for 4543 // which this network is now the best. 4544 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4545 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4546 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4547 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4548 if (newNetwork == currentNetwork) { 4549 if (DBG) log("Network " + newNetwork.name() + " was already satisfying" + 4550 " request " + nri.request.requestId + ". No change."); 4551 keep = true; 4552 continue; 4553 } 4554 4555 // check if it satisfies the NetworkCapabilities 4556 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4557 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 4558 newNetwork.networkCapabilities)) { 4559 if (!nri.isRequest) { 4560 // This is not a request, it's a callback listener. 4561 // Add it to newNetwork regardless of score. 4562 newNetwork.addRequest(nri.request); 4563 continue; 4564 } 4565 4566 // next check if it's better than any current network we're using for 4567 // this request 4568 if (VDBG) { 4569 log("currentScore = " + 4570 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4571 ", newScore = " + newNetwork.getCurrentScore()); 4572 } 4573 if (currentNetwork == null || 4574 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4575 if (currentNetwork != null) { 4576 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4577 currentNetwork.networkRequests.remove(nri.request.requestId); 4578 currentNetwork.networkLingered.add(nri.request); 4579 affectedNetworks.add(currentNetwork); 4580 } else { 4581 if (DBG) log(" accepting network in place of null"); 4582 } 4583 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4584 newNetwork.addRequest(nri.request); 4585 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4586 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4587 } 4588 keep = true; 4589 // Tell NetworkFactories about the new score, so they can stop 4590 // trying to connect if they know they cannot match it. 4591 // TODO - this could get expensive if we have alot of requests for this 4592 // network. Think about if there is a way to reduce this. Push 4593 // netid->request mapping to each factory? 4594 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4595 if (mDefaultRequest.requestId == nri.request.requestId) { 4596 isNewDefault = true; 4597 // TODO: Remove following line. It's redundant with makeDefault call. 4598 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4599 if (newNetwork.linkProperties != null) { 4600 updateTcpBufferSizes(newNetwork); 4601 setDefaultDnsSystemProperties( 4602 newNetwork.linkProperties.getDnsServers()); 4603 } else { 4604 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4605 } 4606 // Maintain the illusion: since the legacy API only 4607 // understands one network at a time, we must pretend 4608 // that the current default network disconnected before 4609 // the new one connected. 4610 if (currentNetwork != null) { 4611 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4612 currentNetwork); 4613 } 4614 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4615 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4616 } 4617 } 4618 } 4619 } 4620 // Linger any networks that are no longer needed. 4621 for (NetworkAgentInfo nai : affectedNetworks) { 4622 boolean teardown = !nai.isVPN(); 4623 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4624 NetworkRequest nr = nai.networkRequests.valueAt(i); 4625 try { 4626 if (mNetworkRequests.get(nr).isRequest) { 4627 teardown = false; 4628 } 4629 } catch (Exception e) { 4630 loge("Request " + nr + " not found in mNetworkRequests."); 4631 loge(" it came from request list of " + nai.name()); 4632 } 4633 } 4634 if (teardown) { 4635 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4636 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4637 } else { 4638 // not going to linger, so kill the list of linger networks.. only 4639 // notify them of linger if it happens as the result of gaining another, 4640 // but if they transition and old network stays up, don't tell them of linger 4641 // or very delayed loss 4642 nai.networkLingered.clear(); 4643 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 4644 } 4645 } 4646 if (keep) { 4647 if (isNewDefault) { 4648 // Notify system services that this network is up. 4649 makeDefault(newNetwork); 4650 synchronized (ConnectivityService.this) { 4651 // have a new default network, release the transition wakelock in 4652 // a second if it's held. The second pause is to allow apps 4653 // to reconnect over the new network 4654 if (mNetTransitionWakeLock.isHeld()) { 4655 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4656 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4657 mNetTransitionWakeLockSerialNumber, 0), 4658 1000); 4659 } 4660 } 4661 } 4662 4663 // Notify battery stats service about this network, both the normal 4664 // interface and any stacked links. 4665 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4666 try { 4667 final IBatteryStats bs = BatteryStatsService.getService(); 4668 final int type = newNetwork.networkInfo.getType(); 4669 4670 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4671 bs.noteNetworkInterfaceType(baseIface, type); 4672 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4673 final String stackedIface = stacked.getInterfaceName(); 4674 bs.noteNetworkInterfaceType(stackedIface, type); 4675 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4676 } 4677 } catch (RemoteException ignored) { 4678 } 4679 4680 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4681 } else if (newNetwork.validated) { 4682 // Only tear down validated networks here. Leave unvalidated to either become 4683 // validated (and get evaluated against peers, one losing here) or 4684 // NetworkMonitor reports a bad network and we tear it down then. 4685 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 4686 // satisfy no NetworkRequests. 4687 if (DBG && newNetwork.networkRequests.size() != 0) { 4688 loge("tearing down network with live requests:"); 4689 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 4690 loge(" " + newNetwork.networkRequests.valueAt(i)); 4691 } 4692 } 4693 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4694 newNetwork.asyncChannel.disconnect(); 4695 } 4696 } 4697 4698 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4699 // being disconnected. 4700 // If only one Network's score or capabilities have been modified since the last time 4701 // this function was called, pass this Network in via the "changed" arugment, otherwise 4702 // pass null. 4703 // If only one Network has been changed but its NetworkCapabilities have not changed, 4704 // pass in the Network's score (from getCurrentScore()) prior to the change via 4705 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4706 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4707 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4708 // to avoid the slowness. It is not simply enough to process just "changed", for 4709 // example in the case where "changed"'s score decreases and another network should begin 4710 // satifying a NetworkRequest that "changed" currently satisfies. 4711 4712 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4713 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4714 // rematchNetworkAndRequests() handles. 4715 if (changed != null && oldScore < changed.getCurrentScore()) { 4716 rematchNetworkAndRequests(changed); 4717 } else { 4718 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4719 rematchNetworkAndRequests(nai); 4720 } 4721 } 4722 } 4723 4724 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4725 // Don't bother updating until we've graduated to validated at least once. 4726 if (!nai.validated) return; 4727 // For now only update icons for default connection. 4728 // TODO: Update WiFi and cellular icons separately. b/17237507 4729 if (!isDefaultNetwork(nai)) return; 4730 4731 int newInetCondition = valid ? 100 : 0; 4732 // Don't repeat publish. 4733 if (newInetCondition == mDefaultInetConditionPublished) return; 4734 4735 mDefaultInetConditionPublished = newInetCondition; 4736 sendInetConditionBroadcast(nai.networkInfo); 4737 } 4738 4739 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4740 NetworkInfo.State state = newInfo.getState(); 4741 NetworkInfo oldInfo = null; 4742 synchronized (networkAgent) { 4743 oldInfo = networkAgent.networkInfo; 4744 networkAgent.networkInfo = newInfo; 4745 } 4746 if (networkAgent.isVPN() && mLockdownTracker != null) { 4747 mLockdownTracker.onVpnStateChanged(newInfo); 4748 } 4749 4750 if (oldInfo != null && oldInfo.getState() == state) { 4751 if (VDBG) log("ignoring duplicate network state non-change"); 4752 return; 4753 } 4754 if (DBG) { 4755 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4756 (oldInfo == null ? "null" : oldInfo.getState()) + 4757 " to " + state); 4758 } 4759 4760 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4761 try { 4762 // This should never fail. Specifying an already in use NetID will cause failure. 4763 if (networkAgent.isVPN()) { 4764 mNetd.createVirtualNetwork(networkAgent.network.netId, 4765 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4766 (networkAgent.networkMisc == null || 4767 !networkAgent.networkMisc.allowBypass)); 4768 } else { 4769 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4770 } 4771 } catch (Exception e) { 4772 loge("Error creating network " + networkAgent.network.netId + ": " 4773 + e.getMessage()); 4774 return; 4775 } 4776 networkAgent.created = true; 4777 updateLinkProperties(networkAgent, null); 4778 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4779 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4780 if (networkAgent.isVPN()) { 4781 // Temporarily disable the default proxy (not global). 4782 synchronized (mProxyLock) { 4783 if (!mDefaultProxyDisabled) { 4784 mDefaultProxyDisabled = true; 4785 if (mGlobalProxy == null && mDefaultProxy != null) { 4786 sendProxyBroadcast(null); 4787 } 4788 } 4789 } 4790 // TODO: support proxy per network. 4791 } 4792 // Consider network even though it is not yet validated. 4793 // TODO: All the if-statement conditions can be removed now that validation only confers 4794 // a score increase. 4795 if (mNetworkForRequestId.get(mDefaultRequest.requestId) == null && 4796 networkAgent.isVPN() == false && 4797 mDefaultRequest.networkCapabilities.satisfiedByNetworkCapabilities( 4798 networkAgent.networkCapabilities)) { 4799 rematchNetworkAndRequests(networkAgent); 4800 } 4801 } else if (state == NetworkInfo.State.DISCONNECTED || 4802 state == NetworkInfo.State.SUSPENDED) { 4803 networkAgent.asyncChannel.disconnect(); 4804 if (networkAgent.isVPN()) { 4805 synchronized (mProxyLock) { 4806 if (mDefaultProxyDisabled) { 4807 mDefaultProxyDisabled = false; 4808 if (mGlobalProxy == null && mDefaultProxy != null) { 4809 sendProxyBroadcast(mDefaultProxy); 4810 } 4811 } 4812 } 4813 } 4814 } 4815 } 4816 4817 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4818 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4819 if (score < 0) { 4820 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4821 "). Bumping score to min of 0"); 4822 score = 0; 4823 } 4824 4825 final int oldScore = nai.getCurrentScore(); 4826 nai.setCurrentScore(score); 4827 4828 if (nai.created) rematchAllNetworksAndRequests(nai, oldScore); 4829 4830 for (int i = 0; i < nai.networkRequests.size(); i++) { 4831 NetworkRequest nr = nai.networkRequests.valueAt(i); 4832 // Don't send listening requests to factories. b/17393458 4833 if (mNetworkRequests.get(nr).isRequest == false) continue; 4834 sendUpdatedScoreToFactories(nr, score); 4835 } 4836 } 4837 4838 // notify only this one new request of the current state 4839 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4840 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4841 // TODO - read state from monitor to decide what to send. 4842// if (nai.networkMonitor.isLingering()) { 4843// notifyType = NetworkCallbacks.LOSING; 4844// } else if (nai.networkMonitor.isEvaluating()) { 4845// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4846// } 4847 callCallbackForRequest(nri, nai, notifyType); 4848 } 4849 4850 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4851 // The NetworkInfo we actually send out has no bearing on the real 4852 // state of affairs. For example, if the default connection is mobile, 4853 // and a request for HIPRI has just gone away, we need to pretend that 4854 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4855 // the state to DISCONNECTED, even though the network is of type MOBILE 4856 // and is still connected. 4857 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4858 info.setType(type); 4859 if (connected) { 4860 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4861 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4862 } else { 4863 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4864 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4865 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4866 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4867 if (info.isFailover()) { 4868 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4869 nai.networkInfo.setFailover(false); 4870 } 4871 if (info.getReason() != null) { 4872 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4873 } 4874 if (info.getExtraInfo() != null) { 4875 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4876 } 4877 NetworkAgentInfo newDefaultAgent = null; 4878 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4879 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4880 if (newDefaultAgent != null) { 4881 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4882 newDefaultAgent.networkInfo); 4883 } else { 4884 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4885 } 4886 } 4887 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4888 mDefaultInetConditionPublished); 4889 final Intent immediateIntent = new Intent(intent); 4890 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4891 sendStickyBroadcast(immediateIntent); 4892 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4893 if (newDefaultAgent != null) { 4894 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4895 getConnectivityChangeDelay()); 4896 } 4897 } 4898 } 4899 4900 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4901 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4902 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4903 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4904 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4905 if (VDBG) log(" sending notification for " + nr); 4906 callCallbackForRequest(nri, networkAgent, notifyType); 4907 } 4908 } 4909 4910 private String notifyTypeToName(int notifyType) { 4911 switch (notifyType) { 4912 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4913 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4914 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4915 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4916 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4917 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4918 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4919 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4920 } 4921 return "UNKNOWN"; 4922 } 4923 4924 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 4925 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4926 if (nai != null) { 4927 synchronized (nai) { 4928 return new LinkProperties(nai.linkProperties); 4929 } 4930 } 4931 return new LinkProperties(); 4932 } 4933 4934 private NetworkInfo getNetworkInfoForType(int networkType) { 4935 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 4936 return null; 4937 4938 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4939 if (nai != null) { 4940 NetworkInfo result = new NetworkInfo(nai.networkInfo); 4941 result.setType(networkType); 4942 return result; 4943 } else { 4944 NetworkInfo result = new NetworkInfo( 4945 networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), ""); 4946 result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 4947 return result; 4948 } 4949 } 4950 4951 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 4952 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4953 if (nai != null) { 4954 synchronized (nai) { 4955 return new NetworkCapabilities(nai.networkCapabilities); 4956 } 4957 } 4958 return new NetworkCapabilities(); 4959 } 4960 4961 @Override 4962 public boolean addVpnAddress(String address, int prefixLength) { 4963 throwIfLockdownEnabled(); 4964 int user = UserHandle.getUserId(Binder.getCallingUid()); 4965 synchronized (mVpns) { 4966 return mVpns.get(user).addAddress(address, prefixLength); 4967 } 4968 } 4969 4970 @Override 4971 public boolean removeVpnAddress(String address, int prefixLength) { 4972 throwIfLockdownEnabled(); 4973 int user = UserHandle.getUserId(Binder.getCallingUid()); 4974 synchronized (mVpns) { 4975 return mVpns.get(user).removeAddress(address, prefixLength); 4976 } 4977 } 4978} 4979