ConnectivityService.java revision f3b47e95b14d040c4239b9188a10a4befb607459
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 private void enforceTetherAccessPermission() { 1361 mContext.enforceCallingOrSelfPermission( 1362 android.Manifest.permission.ACCESS_NETWORK_STATE, 1363 "ConnectivityService"); 1364 } 1365 1366 private void enforceConnectivityInternalPermission() { 1367 mContext.enforceCallingOrSelfPermission( 1368 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1369 "ConnectivityService"); 1370 } 1371 1372 public void sendConnectedBroadcast(NetworkInfo info) { 1373 enforceConnectivityInternalPermission(); 1374 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1375 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1376 } 1377 1378 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1379 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1380 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1381 } 1382 1383 private void sendInetConditionBroadcast(NetworkInfo info) { 1384 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1385 } 1386 1387 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1388 if (mLockdownTracker != null) { 1389 info = mLockdownTracker.augmentNetworkInfo(info); 1390 } 1391 1392 Intent intent = new Intent(bcastType); 1393 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1394 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1395 if (info.isFailover()) { 1396 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1397 info.setFailover(false); 1398 } 1399 if (info.getReason() != null) { 1400 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1401 } 1402 if (info.getExtraInfo() != null) { 1403 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1404 info.getExtraInfo()); 1405 } 1406 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1407 return intent; 1408 } 1409 1410 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1411 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1412 } 1413 1414 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1415 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1416 } 1417 1418 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1419 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1420 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1421 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1422 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1423 final long ident = Binder.clearCallingIdentity(); 1424 try { 1425 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1426 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1427 } finally { 1428 Binder.restoreCallingIdentity(ident); 1429 } 1430 } 1431 1432 private void sendStickyBroadcast(Intent intent) { 1433 synchronized(this) { 1434 if (!mSystemReady) { 1435 mInitialBroadcast = new Intent(intent); 1436 } 1437 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1438 if (DBG) { 1439 log("sendStickyBroadcast: action=" + intent.getAction()); 1440 } 1441 1442 final long ident = Binder.clearCallingIdentity(); 1443 try { 1444 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1445 } finally { 1446 Binder.restoreCallingIdentity(ident); 1447 } 1448 } 1449 } 1450 1451 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1452 if (delayMs <= 0) { 1453 sendStickyBroadcast(intent); 1454 } else { 1455 if (VDBG) { 1456 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1457 + intent.getAction()); 1458 } 1459 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1460 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1461 } 1462 } 1463 1464 void systemReady() { 1465 // start network sampling .. 1466 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1467 intent.setPackage(mContext.getPackageName()); 1468 1469 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1470 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1471 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1472 1473 loadGlobalProxy(); 1474 1475 synchronized(this) { 1476 mSystemReady = true; 1477 if (mInitialBroadcast != null) { 1478 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1479 mInitialBroadcast = null; 1480 } 1481 } 1482 // load the global proxy at startup 1483 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1484 1485 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1486 // for user to unlock device. 1487 if (!updateLockdownVpn()) { 1488 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1489 mContext.registerReceiver(mUserPresentReceiver, filter); 1490 } 1491 1492 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1493 } 1494 1495 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1496 @Override 1497 public void onReceive(Context context, Intent intent) { 1498 // Try creating lockdown tracker, since user present usually means 1499 // unlocked keystore. 1500 if (updateLockdownVpn()) { 1501 mContext.unregisterReceiver(this); 1502 } 1503 } 1504 }; 1505 1506 /** @hide */ 1507 @Override 1508 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1509 enforceConnectivityInternalPermission(); 1510 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1511// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1512 } 1513 1514 /** 1515 * Setup data activity tracking for the given network. 1516 * 1517 * Every {@code setupDataActivityTracking} should be paired with a 1518 * {@link #removeDataActivityTracking} for cleanup. 1519 */ 1520 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1521 final String iface = networkAgent.linkProperties.getInterfaceName(); 1522 1523 final int timeout; 1524 int type = ConnectivityManager.TYPE_NONE; 1525 1526 if (networkAgent.networkCapabilities.hasTransport( 1527 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1528 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1529 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1530 5); 1531 type = ConnectivityManager.TYPE_MOBILE; 1532 } else if (networkAgent.networkCapabilities.hasTransport( 1533 NetworkCapabilities.TRANSPORT_WIFI)) { 1534 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1535 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1536 0); 1537 type = ConnectivityManager.TYPE_WIFI; 1538 } else { 1539 // do not track any other networks 1540 timeout = 0; 1541 } 1542 1543 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1544 try { 1545 mNetd.addIdleTimer(iface, timeout, type); 1546 } catch (Exception e) { 1547 // You shall not crash! 1548 loge("Exception in setupDataActivityTracking " + e); 1549 } 1550 } 1551 } 1552 1553 /** 1554 * Remove data activity tracking when network disconnects. 1555 */ 1556 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1557 final String iface = networkAgent.linkProperties.getInterfaceName(); 1558 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1559 1560 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1561 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1562 try { 1563 // the call fails silently if no idletimer setup for this interface 1564 mNetd.removeIdleTimer(iface); 1565 } catch (Exception e) { 1566 loge("Exception in removeDataActivityTracking " + e); 1567 } 1568 } 1569 } 1570 1571 /** 1572 * Reads the network specific MTU size from reources. 1573 * and set it on it's iface. 1574 */ 1575 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1576 final String iface = newLp.getInterfaceName(); 1577 final int mtu = newLp.getMtu(); 1578 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1579 if (VDBG) log("identical MTU - not setting"); 1580 return; 1581 } 1582 1583 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1584 loge("Unexpected mtu value: " + mtu + ", " + iface); 1585 return; 1586 } 1587 1588 // Cannot set MTU without interface name 1589 if (TextUtils.isEmpty(iface)) { 1590 loge("Setting MTU size with null iface."); 1591 return; 1592 } 1593 1594 try { 1595 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1596 mNetd.setMtu(iface, mtu); 1597 } catch (Exception e) { 1598 Slog.e(TAG, "exception in setMtu()" + e); 1599 } 1600 } 1601 1602 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1603 1604 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1605 if (isDefaultNetwork(nai) == false) { 1606 return; 1607 } 1608 1609 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1610 String[] values = null; 1611 if (tcpBufferSizes != null) { 1612 values = tcpBufferSizes.split(","); 1613 } 1614 1615 if (values == null || values.length != 6) { 1616 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1617 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1618 values = tcpBufferSizes.split(","); 1619 } 1620 1621 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1622 1623 try { 1624 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1625 1626 final String prefix = "/sys/kernel/ipv4/tcp_"; 1627 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1628 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1629 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1630 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1631 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1632 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1633 mCurrentTcpBufferSizes = tcpBufferSizes; 1634 } catch (IOException e) { 1635 loge("Can't set TCP buffer sizes:" + e); 1636 } 1637 1638 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1639 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1640 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1641 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1642 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1643 if (rwndValue != 0) { 1644 SystemProperties.set(sysctlKey, rwndValue.toString()); 1645 } 1646 } 1647 1648 private void flushVmDnsCache() { 1649 /* 1650 * Tell the VMs to toss their DNS caches 1651 */ 1652 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1653 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1654 /* 1655 * Connectivity events can happen before boot has completed ... 1656 */ 1657 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1658 final long ident = Binder.clearCallingIdentity(); 1659 try { 1660 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1661 } finally { 1662 Binder.restoreCallingIdentity(ident); 1663 } 1664 } 1665 1666 @Override 1667 public int getRestoreDefaultNetworkDelay(int networkType) { 1668 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1669 NETWORK_RESTORE_DELAY_PROP_NAME); 1670 if(restoreDefaultNetworkDelayStr != null && 1671 restoreDefaultNetworkDelayStr.length() != 0) { 1672 try { 1673 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1674 } catch (NumberFormatException e) { 1675 } 1676 } 1677 // if the system property isn't set, use the value for the apn type 1678 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1679 1680 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1681 (mNetConfigs[networkType] != null)) { 1682 ret = mNetConfigs[networkType].restoreTime; 1683 } 1684 return ret; 1685 } 1686 1687 @Override 1688 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1689 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1690 if (mContext.checkCallingOrSelfPermission( 1691 android.Manifest.permission.DUMP) 1692 != PackageManager.PERMISSION_GRANTED) { 1693 pw.println("Permission Denial: can't dump ConnectivityService " + 1694 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1695 Binder.getCallingUid()); 1696 return; 1697 } 1698 1699 pw.println("NetworkFactories for:"); 1700 pw.increaseIndent(); 1701 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1702 pw.println(nfi.name); 1703 } 1704 pw.decreaseIndent(); 1705 pw.println(); 1706 1707 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1708 pw.print("Active default network: "); 1709 if (defaultNai == null) { 1710 pw.println("none"); 1711 } else { 1712 pw.println(defaultNai.network.netId); 1713 } 1714 pw.println(); 1715 1716 pw.println("Current Networks:"); 1717 pw.increaseIndent(); 1718 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1719 pw.println(nai.toString()); 1720 pw.increaseIndent(); 1721 pw.println("Requests:"); 1722 pw.increaseIndent(); 1723 for (int i = 0; i < nai.networkRequests.size(); i++) { 1724 pw.println(nai.networkRequests.valueAt(i).toString()); 1725 } 1726 pw.decreaseIndent(); 1727 pw.println("Lingered:"); 1728 pw.increaseIndent(); 1729 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1730 pw.decreaseIndent(); 1731 pw.decreaseIndent(); 1732 } 1733 pw.decreaseIndent(); 1734 pw.println(); 1735 1736 pw.println("Network Requests:"); 1737 pw.increaseIndent(); 1738 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1739 pw.println(nri.toString()); 1740 } 1741 pw.println(); 1742 pw.decreaseIndent(); 1743 1744 pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork); 1745 if (mActiveDefaultNetwork != TYPE_NONE) { 1746 NetworkInfo activeNetworkInfo = getActiveNetworkInfo(); 1747 if (activeNetworkInfo != null) { 1748 pw.print(" " + activeNetworkInfo.getState() + 1749 "/" + activeNetworkInfo.getDetailedState()); 1750 } 1751 } 1752 pw.println(); 1753 1754 pw.println("mLegacyTypeTracker:"); 1755 pw.increaseIndent(); 1756 mLegacyTypeTracker.dump(pw); 1757 pw.decreaseIndent(); 1758 pw.println(); 1759 1760 synchronized (this) { 1761 pw.println("NetworkTransitionWakeLock is currently " + 1762 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1763 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1764 } 1765 pw.println(); 1766 1767 mTethering.dump(fd, pw, args); 1768 1769 if (mInetLog != null) { 1770 pw.println(); 1771 pw.println("Inet condition reports:"); 1772 pw.increaseIndent(); 1773 for(int i = 0; i < mInetLog.size(); i++) { 1774 pw.println(mInetLog.get(i)); 1775 } 1776 pw.decreaseIndent(); 1777 } 1778 } 1779 1780 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1781 if (nai.network == null) return false; 1782 final NetworkAgentInfo officialNai; 1783 synchronized (mNetworkForNetId) { 1784 officialNai = mNetworkForNetId.get(nai.network.netId); 1785 } 1786 if (officialNai != null && officialNai.equals(nai)) return true; 1787 if (officialNai != null || VDBG) { 1788 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1789 " - " + nai); 1790 } 1791 return false; 1792 } 1793 1794 // must be stateless - things change under us. 1795 private class NetworkStateTrackerHandler extends Handler { 1796 public NetworkStateTrackerHandler(Looper looper) { 1797 super(looper); 1798 } 1799 1800 @Override 1801 public void handleMessage(Message msg) { 1802 NetworkInfo info; 1803 switch (msg.what) { 1804 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1805 handleAsyncChannelHalfConnect(msg); 1806 break; 1807 } 1808 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1809 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1810 if (nai != null) nai.asyncChannel.disconnect(); 1811 break; 1812 } 1813 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1814 handleAsyncChannelDisconnected(msg); 1815 break; 1816 } 1817 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1818 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1819 if (nai == null) { 1820 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1821 } else { 1822 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1823 } 1824 break; 1825 } 1826 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1827 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1828 if (nai == null) { 1829 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1830 } else { 1831 if (VDBG) { 1832 log("Update of LinkProperties for " + nai.name() + 1833 "; created=" + nai.created); 1834 } 1835 LinkProperties oldLp = nai.linkProperties; 1836 synchronized (nai) { 1837 nai.linkProperties = (LinkProperties)msg.obj; 1838 } 1839 if (nai.created) updateLinkProperties(nai, oldLp); 1840 } 1841 break; 1842 } 1843 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1844 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1845 if (nai == null) { 1846 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1847 break; 1848 } 1849 info = (NetworkInfo) msg.obj; 1850 updateNetworkInfo(nai, info); 1851 break; 1852 } 1853 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1854 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1855 if (nai == null) { 1856 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1857 break; 1858 } 1859 Integer score = (Integer) msg.obj; 1860 if (score != null) updateNetworkScore(nai, score.intValue()); 1861 break; 1862 } 1863 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1864 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1865 if (nai == null) { 1866 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1867 break; 1868 } 1869 try { 1870 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1871 } catch (Exception e) { 1872 // Never crash! 1873 loge("Exception in addVpnUidRanges: " + e); 1874 } 1875 break; 1876 } 1877 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1878 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1879 if (nai == null) { 1880 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1881 break; 1882 } 1883 try { 1884 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1885 } catch (Exception e) { 1886 // Never crash! 1887 loge("Exception in removeVpnUidRanges: " + e); 1888 } 1889 break; 1890 } 1891 case NetworkAgent.EVENT_BLOCK_ADDRESS_FAMILY: { 1892 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1893 if (nai == null) { 1894 loge("EVENT_BLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1895 break; 1896 } 1897 try { 1898 mNetd.blockAddressFamily((Integer) msg.obj, nai.network.netId, 1899 nai.linkProperties.getInterfaceName()); 1900 } catch (Exception e) { 1901 // Never crash! 1902 loge("Exception in blockAddressFamily: " + e); 1903 } 1904 break; 1905 } 1906 case NetworkAgent.EVENT_UNBLOCK_ADDRESS_FAMILY: { 1907 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1908 if (nai == null) { 1909 loge("EVENT_UNBLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1910 break; 1911 } 1912 try { 1913 mNetd.unblockAddressFamily((Integer) msg.obj, nai.network.netId, 1914 nai.linkProperties.getInterfaceName()); 1915 } catch (Exception e) { 1916 // Never crash! 1917 loge("Exception in blockAddressFamily: " + e); 1918 } 1919 break; 1920 } 1921 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1922 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1923 if (nai == null) { 1924 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1925 break; 1926 } 1927 nai.networkMisc.explicitlySelected = true; 1928 break; 1929 } 1930 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1931 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1932 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1933 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1934 if (valid) { 1935 if (DBG) log("Validated " + nai.name()); 1936 nai.validated = true; 1937 rematchNetworkAndRequests(nai); 1938 } 1939 updateInetCondition(nai, valid); 1940 // Let the NetworkAgent know the state of its network 1941 nai.asyncChannel.sendMessage( 1942 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1943 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1944 0, null); 1945 } 1946 break; 1947 } 1948 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1949 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1950 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1951 handleLingerComplete(nai); 1952 } 1953 break; 1954 } 1955 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1956 if (msg.arg1 == 0) { 1957 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1958 } else { 1959 NetworkAgentInfo nai = null; 1960 synchronized (mNetworkForNetId) { 1961 nai = mNetworkForNetId.get(msg.arg2); 1962 } 1963 if (nai == null) { 1964 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1965 break; 1966 } 1967 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1968 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1969 } 1970 break; 1971 } 1972 case NetworkStateTracker.EVENT_STATE_CHANGED: { 1973 info = (NetworkInfo) msg.obj; 1974 NetworkInfo.State state = info.getState(); 1975 1976 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 1977 (state == NetworkInfo.State.DISCONNECTED) || 1978 (state == NetworkInfo.State.SUSPENDED)) { 1979 log("ConnectivityChange for " + 1980 info.getTypeName() + ": " + 1981 state + "/" + info.getDetailedState()); 1982 } 1983 1984 // Since mobile has the notion of a network/apn that can be used for 1985 // provisioning we need to check every time we're connected as 1986 // CaptiveProtalTracker won't detected it because DCT doesn't report it 1987 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 1988 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 1989 // is received by MDST and sent here as EVENT_STATE_CHANGED. 1990 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 1991 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 1992 Settings.Global.DEVICE_PROVISIONED, 0)) 1993 && (((state == NetworkInfo.State.CONNECTED) 1994 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 1995 || info.isConnectedToProvisioningNetwork())) { 1996 log("ConnectivityChange checkMobileProvisioning for" 1997 + " TYPE_MOBILE or ProvisioningNetwork"); 1998 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 1999 } 2000 2001 EventLogTags.writeConnectivityStateChanged( 2002 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2003 2004 if (info.isConnectedToProvisioningNetwork()) { 2005 /** 2006 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2007 * for now its an in between network, its a network that 2008 * is actually a default network but we don't want it to be 2009 * announced as such to keep background applications from 2010 * trying to use it. It turns out that some still try so we 2011 * take the additional step of clearing any default routes 2012 * to the link that may have incorrectly setup by the lower 2013 * levels. 2014 */ 2015 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 2016 if (DBG) { 2017 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2018 } 2019 2020 // Clear any default routes setup by the radio so 2021 // any activity by applications trying to use this 2022 // connection will fail until the provisioning network 2023 // is enabled. 2024 /* 2025 for (RouteInfo r : lp.getRoutes()) { 2026 removeRoute(lp, r, TO_DEFAULT_TABLE, 2027 mNetTrackers[info.getType()].getNetwork().netId); 2028 } 2029 */ 2030 } else if (state == NetworkInfo.State.DISCONNECTED) { 2031 } else if (state == NetworkInfo.State.SUSPENDED) { 2032 } else if (state == NetworkInfo.State.CONNECTED) { 2033 // handleConnect(info); 2034 } 2035 if (mLockdownTracker != null) { 2036 mLockdownTracker.onNetworkInfoChanged(info); 2037 } 2038 break; 2039 } 2040 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2041 info = (NetworkInfo) msg.obj; 2042 // TODO: Temporary allowing network configuration 2043 // change not resetting sockets. 2044 // @see bug/4455071 2045 /* 2046 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2047 false); 2048 */ 2049 break; 2050 } 2051 } 2052 } 2053 } 2054 2055 private void handleAsyncChannelHalfConnect(Message msg) { 2056 AsyncChannel ac = (AsyncChannel) msg.obj; 2057 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2058 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2059 if (VDBG) log("NetworkFactory connected"); 2060 // A network factory has connected. Send it all current NetworkRequests. 2061 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2062 if (nri.isRequest == false) continue; 2063 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2064 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2065 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2066 } 2067 } else { 2068 loge("Error connecting NetworkFactory"); 2069 mNetworkFactoryInfos.remove(msg.obj); 2070 } 2071 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2072 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2073 if (VDBG) log("NetworkAgent connected"); 2074 // A network agent has requested a connection. Establish the connection. 2075 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2076 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2077 } else { 2078 loge("Error connecting NetworkAgent"); 2079 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2080 if (nai != null) { 2081 synchronized (mNetworkForNetId) { 2082 mNetworkForNetId.remove(nai.network.netId); 2083 } 2084 // Just in case. 2085 mLegacyTypeTracker.remove(nai); 2086 } 2087 } 2088 } 2089 } 2090 private void handleAsyncChannelDisconnected(Message msg) { 2091 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2092 if (nai != null) { 2093 if (DBG) { 2094 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2095 } 2096 // A network agent has disconnected. 2097 if (nai.created) { 2098 // Tell netd to clean up the configuration for this network 2099 // (routing rules, DNS, etc). 2100 try { 2101 mNetd.removeNetwork(nai.network.netId); 2102 } catch (Exception e) { 2103 loge("Exception removing network: " + e); 2104 } 2105 } 2106 // TODO - if we move the logic to the network agent (have them disconnect 2107 // because they lost all their requests or because their score isn't good) 2108 // then they would disconnect organically, report their new state and then 2109 // disconnect the channel. 2110 if (nai.networkInfo.isConnected()) { 2111 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2112 null, null); 2113 } 2114 if (isDefaultNetwork(nai)) { 2115 mDefaultInetConditionPublished = 0; 2116 } 2117 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2118 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2119 mNetworkAgentInfos.remove(msg.replyTo); 2120 updateClat(null, nai.linkProperties, nai); 2121 mLegacyTypeTracker.remove(nai); 2122 synchronized (mNetworkForNetId) { 2123 mNetworkForNetId.remove(nai.network.netId); 2124 } 2125 // Since we've lost the network, go through all the requests that 2126 // it was satisfying and see if any other factory can satisfy them. 2127 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2128 for (int i = 0; i < nai.networkRequests.size(); i++) { 2129 NetworkRequest request = nai.networkRequests.valueAt(i); 2130 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2131 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2132 if (DBG) { 2133 log("Checking for replacement network to handle request " + request ); 2134 } 2135 mNetworkForRequestId.remove(request.requestId); 2136 sendUpdatedScoreToFactories(request, 0); 2137 NetworkAgentInfo alternative = null; 2138 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 2139 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 2140 if (existing.networkInfo.isConnected() && 2141 request.networkCapabilities.satisfiedByNetworkCapabilities( 2142 existing.networkCapabilities) && 2143 (alternative == null || 2144 alternative.getCurrentScore() < existing.getCurrentScore())) { 2145 alternative = existing; 2146 } 2147 } 2148 if (alternative != null) { 2149 if (DBG) log(" found replacement in " + alternative.name()); 2150 if (!toActivate.contains(alternative)) { 2151 toActivate.add(alternative); 2152 } 2153 } 2154 } 2155 } 2156 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2157 removeDataActivityTracking(nai); 2158 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 2159 requestNetworkTransitionWakelock(nai.name()); 2160 } 2161 for (NetworkAgentInfo networkToActivate : toActivate) { 2162 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2163 } 2164 } 2165 } 2166 2167 private void handleRegisterNetworkRequest(Message msg) { 2168 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2169 final NetworkCapabilities newCap = nri.request.networkCapabilities; 2170 int score = 0; 2171 2172 // Check for the best currently alive network that satisfies this request 2173 NetworkAgentInfo bestNetwork = null; 2174 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2175 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2176 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 2177 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2178 if ((bestNetwork == null) || 2179 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2180 if (!nri.isRequest) { 2181 // Not setting bestNetwork here as a listening NetworkRequest may be 2182 // satisfied by multiple Networks. Instead the request is added to 2183 // each satisfying Network and notified about each. 2184 network.addRequest(nri.request); 2185 notifyNetworkCallback(network, nri); 2186 } else { 2187 bestNetwork = network; 2188 } 2189 } 2190 } 2191 } 2192 if (bestNetwork != null) { 2193 if (DBG) log("using " + bestNetwork.name()); 2194 if (bestNetwork.networkInfo.isConnected()) { 2195 // Cancel any lingering so the linger timeout doesn't teardown this network 2196 // even though we have a request for it. 2197 bestNetwork.networkLingered.clear(); 2198 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2199 } 2200 bestNetwork.addRequest(nri.request); 2201 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2202 notifyNetworkCallback(bestNetwork, nri); 2203 score = bestNetwork.getCurrentScore(); 2204 if (nri.request.legacyType != TYPE_NONE) { 2205 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2206 } 2207 } 2208 mNetworkRequests.put(nri.request, nri); 2209 if (nri.isRequest) { 2210 if (DBG) log("sending new NetworkRequest to factories"); 2211 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2212 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2213 0, nri.request); 2214 } 2215 } 2216 } 2217 2218 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2219 NetworkRequestInfo nri = mNetworkRequests.get(request); 2220 if (nri != null) { 2221 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2222 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2223 return; 2224 } 2225 if (DBG) log("releasing NetworkRequest " + request); 2226 nri.unlinkDeathRecipient(); 2227 mNetworkRequests.remove(request); 2228 if (nri.isRequest) { 2229 // Find all networks that are satisfying this request and remove the request 2230 // from their request lists. 2231 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2232 if (nai.networkRequests.get(nri.request.requestId) != null) { 2233 nai.networkRequests.remove(nri.request.requestId); 2234 if (DBG) { 2235 log(" Removing from current network " + nai.name() + 2236 ", leaving " + nai.networkRequests.size() + 2237 " requests."); 2238 } 2239 // check if has any requests remaining and if not, 2240 // disconnect (unless it's a VPN). 2241 boolean keep = nai.isVPN(); 2242 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2243 NetworkRequest r = nai.networkRequests.valueAt(i); 2244 if (mNetworkRequests.get(r).isRequest) keep = true; 2245 } 2246 if (!keep) { 2247 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2248 nai.asyncChannel.disconnect(); 2249 } 2250 } 2251 } 2252 2253 // Maintain the illusion. When this request arrived, we might have preteneded 2254 // that a network connected to serve it, even though the network was already 2255 // connected. Now that this request has gone away, we might have to pretend 2256 // that the network disconnected. LegacyTypeTracker will generate that 2257 // phatom disconnect for this type. 2258 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2259 if (nai != null) { 2260 mNetworkForRequestId.remove(nri.request.requestId); 2261 if (nri.request.legacyType != TYPE_NONE) { 2262 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2263 } 2264 } 2265 2266 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2267 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2268 nri.request); 2269 } 2270 } else { 2271 // listens don't have a singular affectedNetwork. Check all networks to see 2272 // if this listen request applies and remove it. 2273 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2274 nai.networkRequests.remove(nri.request.requestId); 2275 } 2276 } 2277 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2278 } 2279 } 2280 2281 private class InternalHandler extends Handler { 2282 public InternalHandler(Looper looper) { 2283 super(looper); 2284 } 2285 2286 @Override 2287 public void handleMessage(Message msg) { 2288 NetworkInfo info; 2289 switch (msg.what) { 2290 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2291 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2292 String causedBy = null; 2293 synchronized (ConnectivityService.this) { 2294 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2295 mNetTransitionWakeLock.isHeld()) { 2296 mNetTransitionWakeLock.release(); 2297 causedBy = mNetTransitionWakeLockCausedBy; 2298 } else { 2299 break; 2300 } 2301 } 2302 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2303 log("Failed to find a new network - expiring NetTransition Wakelock"); 2304 } else { 2305 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2306 " cleared because we found a replacement network"); 2307 } 2308 break; 2309 } 2310 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2311 handleDeprecatedGlobalHttpProxy(); 2312 break; 2313 } 2314 case EVENT_SET_DEPENDENCY_MET: { 2315 boolean met = (msg.arg1 == ENABLED); 2316 handleSetDependencyMet(msg.arg2, met); 2317 break; 2318 } 2319 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2320 Intent intent = (Intent)msg.obj; 2321 sendStickyBroadcast(intent); 2322 break; 2323 } 2324 case EVENT_SET_POLICY_DATA_ENABLE: { 2325 final int networkType = msg.arg1; 2326 final boolean enabled = msg.arg2 == ENABLED; 2327 handleSetPolicyDataEnable(networkType, enabled); 2328 break; 2329 } 2330 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2331 int tag = mEnableFailFastMobileDataTag.get(); 2332 if (msg.arg1 == tag) { 2333 MobileDataStateTracker mobileDst = 2334 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2335 if (mobileDst != null) { 2336 mobileDst.setEnableFailFastMobileData(msg.arg2); 2337 } 2338 } else { 2339 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2340 + " != tag:" + tag); 2341 } 2342 break; 2343 } 2344 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2345 handleNetworkSamplingTimeout(); 2346 break; 2347 } 2348 case EVENT_PROXY_HAS_CHANGED: { 2349 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2350 break; 2351 } 2352 case EVENT_REGISTER_NETWORK_FACTORY: { 2353 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2354 break; 2355 } 2356 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2357 handleUnregisterNetworkFactory((Messenger)msg.obj); 2358 break; 2359 } 2360 case EVENT_REGISTER_NETWORK_AGENT: { 2361 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2362 break; 2363 } 2364 case EVENT_REGISTER_NETWORK_REQUEST: 2365 case EVENT_REGISTER_NETWORK_LISTENER: { 2366 handleRegisterNetworkRequest(msg); 2367 break; 2368 } 2369 case EVENT_RELEASE_NETWORK_REQUEST: { 2370 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2371 break; 2372 } 2373 case EVENT_SYSTEM_READY: { 2374 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2375 nai.networkMonitor.systemReady = true; 2376 } 2377 break; 2378 } 2379 } 2380 } 2381 } 2382 2383 // javadoc from interface 2384 public int tether(String iface) { 2385 ConnectivityManager.enforceTetherChangePermission(mContext); 2386 if (isTetheringSupported()) { 2387 return mTethering.tether(iface); 2388 } else { 2389 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2390 } 2391 } 2392 2393 // javadoc from interface 2394 public int untether(String iface) { 2395 ConnectivityManager.enforceTetherChangePermission(mContext); 2396 2397 if (isTetheringSupported()) { 2398 return mTethering.untether(iface); 2399 } else { 2400 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2401 } 2402 } 2403 2404 // javadoc from interface 2405 public int getLastTetherError(String iface) { 2406 enforceTetherAccessPermission(); 2407 2408 if (isTetheringSupported()) { 2409 return mTethering.getLastTetherError(iface); 2410 } else { 2411 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2412 } 2413 } 2414 2415 // TODO - proper iface API for selection by property, inspection, etc 2416 public String[] getTetherableUsbRegexs() { 2417 enforceTetherAccessPermission(); 2418 if (isTetheringSupported()) { 2419 return mTethering.getTetherableUsbRegexs(); 2420 } else { 2421 return new String[0]; 2422 } 2423 } 2424 2425 public String[] getTetherableWifiRegexs() { 2426 enforceTetherAccessPermission(); 2427 if (isTetheringSupported()) { 2428 return mTethering.getTetherableWifiRegexs(); 2429 } else { 2430 return new String[0]; 2431 } 2432 } 2433 2434 public String[] getTetherableBluetoothRegexs() { 2435 enforceTetherAccessPermission(); 2436 if (isTetheringSupported()) { 2437 return mTethering.getTetherableBluetoothRegexs(); 2438 } else { 2439 return new String[0]; 2440 } 2441 } 2442 2443 public int setUsbTethering(boolean enable) { 2444 ConnectivityManager.enforceTetherChangePermission(mContext); 2445 if (isTetheringSupported()) { 2446 return mTethering.setUsbTethering(enable); 2447 } else { 2448 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2449 } 2450 } 2451 2452 // TODO - move iface listing, queries, etc to new module 2453 // javadoc from interface 2454 public String[] getTetherableIfaces() { 2455 enforceTetherAccessPermission(); 2456 return mTethering.getTetherableIfaces(); 2457 } 2458 2459 public String[] getTetheredIfaces() { 2460 enforceTetherAccessPermission(); 2461 return mTethering.getTetheredIfaces(); 2462 } 2463 2464 public String[] getTetheringErroredIfaces() { 2465 enforceTetherAccessPermission(); 2466 return mTethering.getErroredIfaces(); 2467 } 2468 2469 public String[] getTetheredDhcpRanges() { 2470 enforceConnectivityInternalPermission(); 2471 return mTethering.getTetheredDhcpRanges(); 2472 } 2473 2474 // if ro.tether.denied = true we default to no tethering 2475 // gservices could set the secure setting to 1 though to enable it on a build where it 2476 // had previously been turned off. 2477 public boolean isTetheringSupported() { 2478 enforceTetherAccessPermission(); 2479 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2480 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2481 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2482 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2483 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2484 mTethering.getTetherableWifiRegexs().length != 0 || 2485 mTethering.getTetherableBluetoothRegexs().length != 0) && 2486 mTethering.getUpstreamIfaceTypes().length != 0); 2487 } 2488 2489 // Called when we lose the default network and have no replacement yet. 2490 // This will automatically be cleared after X seconds or a new default network 2491 // becomes CONNECTED, whichever happens first. The timer is started by the 2492 // first caller and not restarted by subsequent callers. 2493 private void requestNetworkTransitionWakelock(String forWhom) { 2494 int serialNum = 0; 2495 synchronized (this) { 2496 if (mNetTransitionWakeLock.isHeld()) return; 2497 serialNum = ++mNetTransitionWakeLockSerialNumber; 2498 mNetTransitionWakeLock.acquire(); 2499 mNetTransitionWakeLockCausedBy = forWhom; 2500 } 2501 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2502 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2503 mNetTransitionWakeLockTimeout); 2504 return; 2505 } 2506 2507 // 100 percent is full good, 0 is full bad. 2508 public void reportInetCondition(int networkType, int percentage) { 2509 if (percentage > 50) return; // don't handle good network reports 2510 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2511 if (nai != null) reportBadNetwork(nai.network); 2512 } 2513 2514 public void reportBadNetwork(Network network) { 2515 enforceAccessPermission(); 2516 enforceInternetPermission(); 2517 2518 if (network == null) return; 2519 2520 final int uid = Binder.getCallingUid(); 2521 NetworkAgentInfo nai = null; 2522 synchronized (mNetworkForNetId) { 2523 nai = mNetworkForNetId.get(network.netId); 2524 } 2525 if (nai == null) return; 2526 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2527 synchronized (nai) { 2528 if (isNetworkBlocked(nai, uid)) return; 2529 2530 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2531 } 2532 } 2533 2534 public ProxyInfo getProxy() { 2535 // this information is already available as a world read/writable jvm property 2536 // so this API change wouldn't have a benifit. It also breaks the passing 2537 // of proxy info to all the JVMs. 2538 // enforceAccessPermission(); 2539 synchronized (mProxyLock) { 2540 ProxyInfo ret = mGlobalProxy; 2541 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2542 return ret; 2543 } 2544 } 2545 2546 public void setGlobalProxy(ProxyInfo proxyProperties) { 2547 enforceConnectivityInternalPermission(); 2548 2549 synchronized (mProxyLock) { 2550 if (proxyProperties == mGlobalProxy) return; 2551 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2552 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2553 2554 String host = ""; 2555 int port = 0; 2556 String exclList = ""; 2557 String pacFileUrl = ""; 2558 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2559 (proxyProperties.getPacFileUrl() != null))) { 2560 if (!proxyProperties.isValid()) { 2561 if (DBG) 2562 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2563 return; 2564 } 2565 mGlobalProxy = new ProxyInfo(proxyProperties); 2566 host = mGlobalProxy.getHost(); 2567 port = mGlobalProxy.getPort(); 2568 exclList = mGlobalProxy.getExclusionListAsString(); 2569 if (proxyProperties.getPacFileUrl() != null) { 2570 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2571 } 2572 } else { 2573 mGlobalProxy = null; 2574 } 2575 ContentResolver res = mContext.getContentResolver(); 2576 final long token = Binder.clearCallingIdentity(); 2577 try { 2578 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2579 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2580 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2581 exclList); 2582 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2583 } finally { 2584 Binder.restoreCallingIdentity(token); 2585 } 2586 } 2587 2588 if (mGlobalProxy == null) { 2589 proxyProperties = mDefaultProxy; 2590 } 2591 sendProxyBroadcast(proxyProperties); 2592 } 2593 2594 private void loadGlobalProxy() { 2595 ContentResolver res = mContext.getContentResolver(); 2596 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2597 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2598 String exclList = Settings.Global.getString(res, 2599 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2600 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2601 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2602 ProxyInfo proxyProperties; 2603 if (!TextUtils.isEmpty(pacFileUrl)) { 2604 proxyProperties = new ProxyInfo(pacFileUrl); 2605 } else { 2606 proxyProperties = new ProxyInfo(host, port, exclList); 2607 } 2608 if (!proxyProperties.isValid()) { 2609 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2610 return; 2611 } 2612 2613 synchronized (mProxyLock) { 2614 mGlobalProxy = proxyProperties; 2615 } 2616 } 2617 } 2618 2619 public ProxyInfo getGlobalProxy() { 2620 // this information is already available as a world read/writable jvm property 2621 // so this API change wouldn't have a benifit. It also breaks the passing 2622 // of proxy info to all the JVMs. 2623 // enforceAccessPermission(); 2624 synchronized (mProxyLock) { 2625 return mGlobalProxy; 2626 } 2627 } 2628 2629 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2630 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2631 && (proxy.getPacFileUrl() == null)) { 2632 proxy = null; 2633 } 2634 synchronized (mProxyLock) { 2635 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2636 if (mDefaultProxy == proxy) return; // catches repeated nulls 2637 if (proxy != null && !proxy.isValid()) { 2638 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2639 return; 2640 } 2641 2642 // This call could be coming from the PacManager, containing the port of the local 2643 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2644 // global (to get the correct local port), and send a broadcast. 2645 // TODO: Switch PacManager to have its own message to send back rather than 2646 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2647 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 2648 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2649 mGlobalProxy = proxy; 2650 sendProxyBroadcast(mGlobalProxy); 2651 return; 2652 } 2653 mDefaultProxy = proxy; 2654 2655 if (mGlobalProxy != null) return; 2656 if (!mDefaultProxyDisabled) { 2657 sendProxyBroadcast(proxy); 2658 } 2659 } 2660 } 2661 2662 private void handleDeprecatedGlobalHttpProxy() { 2663 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2664 Settings.Global.HTTP_PROXY); 2665 if (!TextUtils.isEmpty(proxy)) { 2666 String data[] = proxy.split(":"); 2667 if (data.length == 0) { 2668 return; 2669 } 2670 2671 String proxyHost = data[0]; 2672 int proxyPort = 8080; 2673 if (data.length > 1) { 2674 try { 2675 proxyPort = Integer.parseInt(data[1]); 2676 } catch (NumberFormatException e) { 2677 return; 2678 } 2679 } 2680 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2681 setGlobalProxy(p); 2682 } 2683 } 2684 2685 private void sendProxyBroadcast(ProxyInfo proxy) { 2686 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2687 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2688 if (DBG) log("sending Proxy Broadcast for " + proxy); 2689 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2690 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2691 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2692 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2693 final long ident = Binder.clearCallingIdentity(); 2694 try { 2695 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2696 } finally { 2697 Binder.restoreCallingIdentity(ident); 2698 } 2699 } 2700 2701 private static class SettingsObserver extends ContentObserver { 2702 private int mWhat; 2703 private Handler mHandler; 2704 SettingsObserver(Handler handler, int what) { 2705 super(handler); 2706 mHandler = handler; 2707 mWhat = what; 2708 } 2709 2710 void observe(Context context) { 2711 ContentResolver resolver = context.getContentResolver(); 2712 resolver.registerContentObserver(Settings.Global.getUriFor( 2713 Settings.Global.HTTP_PROXY), false, this); 2714 } 2715 2716 @Override 2717 public void onChange(boolean selfChange) { 2718 mHandler.obtainMessage(mWhat).sendToTarget(); 2719 } 2720 } 2721 2722 private static void log(String s) { 2723 Slog.d(TAG, s); 2724 } 2725 2726 private static void loge(String s) { 2727 Slog.e(TAG, s); 2728 } 2729 2730 int convertFeatureToNetworkType(int networkType, String feature) { 2731 int usedNetworkType = networkType; 2732 2733 if(networkType == ConnectivityManager.TYPE_MOBILE) { 2734 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 2735 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 2736 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 2737 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 2738 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 2739 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 2740 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 2741 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 2742 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 2743 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 2744 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 2745 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 2746 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 2747 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 2748 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 2749 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 2750 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 2751 } else { 2752 Slog.e(TAG, "Can't match any mobile netTracker!"); 2753 } 2754 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 2755 if (TextUtils.equals(feature, "p2p")) { 2756 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 2757 } else { 2758 Slog.e(TAG, "Can't match any wifi netTracker!"); 2759 } 2760 } else { 2761 Slog.e(TAG, "Unexpected network type"); 2762 } 2763 return usedNetworkType; 2764 } 2765 2766 private static <T> T checkNotNull(T value, String message) { 2767 if (value == null) { 2768 throw new NullPointerException(message); 2769 } 2770 return value; 2771 } 2772 2773 /** 2774 * Prepare for a VPN application. This method is used by VpnDialogs 2775 * and not available in ConnectivityManager. Permissions are checked 2776 * in Vpn class. 2777 * @hide 2778 */ 2779 @Override 2780 public boolean prepareVpn(String oldPackage, String newPackage) { 2781 throwIfLockdownEnabled(); 2782 int user = UserHandle.getUserId(Binder.getCallingUid()); 2783 synchronized(mVpns) { 2784 return mVpns.get(user).prepare(oldPackage, newPackage); 2785 } 2786 } 2787 2788 /** 2789 * Set whether the current VPN package has the ability to launch VPNs without 2790 * user intervention. This method is used by system UIs and not available 2791 * in ConnectivityManager. Permissions are checked in Vpn class. 2792 * @hide 2793 */ 2794 @Override 2795 public void setVpnPackageAuthorization(boolean authorized) { 2796 int user = UserHandle.getUserId(Binder.getCallingUid()); 2797 synchronized(mVpns) { 2798 mVpns.get(user).setPackageAuthorization(authorized); 2799 } 2800 } 2801 2802 /** 2803 * Configure a TUN interface and return its file descriptor. Parameters 2804 * are encoded and opaque to this class. This method is used by VpnBuilder 2805 * and not available in ConnectivityManager. Permissions are checked in 2806 * Vpn class. 2807 * @hide 2808 */ 2809 @Override 2810 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2811 throwIfLockdownEnabled(); 2812 int user = UserHandle.getUserId(Binder.getCallingUid()); 2813 synchronized(mVpns) { 2814 return mVpns.get(user).establish(config); 2815 } 2816 } 2817 2818 /** 2819 * Start legacy VPN, controlling native daemons as needed. Creates a 2820 * secondary thread to perform connection work, returning quickly. 2821 */ 2822 @Override 2823 public void startLegacyVpn(VpnProfile profile) { 2824 throwIfLockdownEnabled(); 2825 final LinkProperties egress = getActiveLinkProperties(); 2826 if (egress == null) { 2827 throw new IllegalStateException("Missing active network connection"); 2828 } 2829 int user = UserHandle.getUserId(Binder.getCallingUid()); 2830 synchronized(mVpns) { 2831 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2832 } 2833 } 2834 2835 /** 2836 * Return the information of the ongoing legacy VPN. This method is used 2837 * by VpnSettings and not available in ConnectivityManager. Permissions 2838 * are checked in Vpn class. 2839 * @hide 2840 */ 2841 @Override 2842 public LegacyVpnInfo getLegacyVpnInfo() { 2843 throwIfLockdownEnabled(); 2844 int user = UserHandle.getUserId(Binder.getCallingUid()); 2845 synchronized(mVpns) { 2846 return mVpns.get(user).getLegacyVpnInfo(); 2847 } 2848 } 2849 2850 /** 2851 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2852 * not available in ConnectivityManager. 2853 * Permissions are checked in Vpn class. 2854 * @hide 2855 */ 2856 @Override 2857 public VpnConfig getVpnConfig() { 2858 int user = UserHandle.getUserId(Binder.getCallingUid()); 2859 synchronized(mVpns) { 2860 return mVpns.get(user).getVpnConfig(); 2861 } 2862 } 2863 2864 @Override 2865 public boolean updateLockdownVpn() { 2866 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2867 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2868 return false; 2869 } 2870 2871 // Tear down existing lockdown if profile was removed 2872 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2873 if (mLockdownEnabled) { 2874 if (!mKeyStore.isUnlocked()) { 2875 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2876 return false; 2877 } 2878 2879 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2880 final VpnProfile profile = VpnProfile.decode( 2881 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2882 int user = UserHandle.getUserId(Binder.getCallingUid()); 2883 synchronized(mVpns) { 2884 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2885 profile)); 2886 } 2887 } else { 2888 setLockdownTracker(null); 2889 } 2890 2891 return true; 2892 } 2893 2894 /** 2895 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2896 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2897 */ 2898 private void setLockdownTracker(LockdownVpnTracker tracker) { 2899 // Shutdown any existing tracker 2900 final LockdownVpnTracker existing = mLockdownTracker; 2901 mLockdownTracker = null; 2902 if (existing != null) { 2903 existing.shutdown(); 2904 } 2905 2906 try { 2907 if (tracker != null) { 2908 mNetd.setFirewallEnabled(true); 2909 mNetd.setFirewallInterfaceRule("lo", true); 2910 mLockdownTracker = tracker; 2911 mLockdownTracker.init(); 2912 } else { 2913 mNetd.setFirewallEnabled(false); 2914 } 2915 } catch (RemoteException e) { 2916 // ignored; NMS lives inside system_server 2917 } 2918 } 2919 2920 private void throwIfLockdownEnabled() { 2921 if (mLockdownEnabled) { 2922 throw new IllegalStateException("Unavailable in lockdown mode"); 2923 } 2924 } 2925 2926 public void supplyMessenger(int networkType, Messenger messenger) { 2927 enforceConnectivityInternalPermission(); 2928 2929 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2930 mNetTrackers[networkType].supplyMessenger(messenger); 2931 } 2932 } 2933 2934 public int findConnectionTypeForIface(String iface) { 2935 enforceConnectivityInternalPermission(); 2936 2937 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2938 2939 synchronized(mNetworkForNetId) { 2940 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2941 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2942 LinkProperties lp = nai.linkProperties; 2943 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2944 return nai.networkInfo.getType(); 2945 } 2946 } 2947 } 2948 return ConnectivityManager.TYPE_NONE; 2949 } 2950 2951 /** 2952 * Have mobile data fail fast if enabled. 2953 * 2954 * @param enabled DctConstants.ENABLED/DISABLED 2955 */ 2956 private void setEnableFailFastMobileData(int enabled) { 2957 int tag; 2958 2959 if (enabled == DctConstants.ENABLED) { 2960 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 2961 } else { 2962 tag = mEnableFailFastMobileDataTag.get(); 2963 } 2964 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 2965 enabled)); 2966 } 2967 2968 private boolean isMobileDataStateTrackerReady() { 2969 MobileDataStateTracker mdst = 2970 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 2971 return (mdst != null) && (mdst.isReady()); 2972 } 2973 2974 /** 2975 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 2976 */ 2977 2978 /** 2979 * No connection was possible to the network. 2980 * This is NOT a warm sim. 2981 */ 2982 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 2983 2984 /** 2985 * A connection was made to the internet, all is well. 2986 * This is NOT a warm sim. 2987 */ 2988 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 2989 2990 /** 2991 * A connection was made but no dns server was available to resolve a name to address. 2992 * This is NOT a warm sim since provisioning network is supported. 2993 */ 2994 private static final int CMP_RESULT_CODE_NO_DNS = 2; 2995 2996 /** 2997 * A connection was made but could not open a TCP connection. 2998 * This is NOT a warm sim since provisioning network is supported. 2999 */ 3000 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 3001 3002 /** 3003 * A connection was made but there was a redirection, we appear to be in walled garden. 3004 * This is an indication of a warm sim on a mobile network such as T-Mobile. 3005 */ 3006 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 3007 3008 /** 3009 * The mobile network is a provisioning network. 3010 * This is an indication of a warm sim on a mobile network such as AT&T. 3011 */ 3012 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 3013 3014 /** 3015 * The mobile network is provisioning 3016 */ 3017 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 3018 3019 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 3020 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 3021 3022 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 3023 3024 @Override 3025 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3026 int timeOutMs = -1; 3027 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 3028 enforceConnectivityInternalPermission(); 3029 3030 final long token = Binder.clearCallingIdentity(); 3031 try { 3032 timeOutMs = suggestedTimeOutMs; 3033 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 3034 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 3035 } 3036 3037 // Check that mobile networks are supported 3038 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 3039 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 3040 if (DBG) log("checkMobileProvisioning: X no mobile network"); 3041 return timeOutMs; 3042 } 3043 3044 // If we're already checking don't do it again 3045 // TODO: Add a queue of results... 3046 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 3047 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 3048 return timeOutMs; 3049 } 3050 3051 // Start off with mobile notification off 3052 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3053 3054 CheckMp checkMp = new CheckMp(mContext, this); 3055 CheckMp.CallBack cb = new CheckMp.CallBack() { 3056 @Override 3057 void onComplete(Integer result) { 3058 if (DBG) log("CheckMp.onComplete: result=" + result); 3059 NetworkInfo ni = 3060 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 3061 switch(result) { 3062 case CMP_RESULT_CODE_CONNECTABLE: 3063 case CMP_RESULT_CODE_NO_CONNECTION: 3064 case CMP_RESULT_CODE_NO_DNS: 3065 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 3066 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 3067 break; 3068 } 3069 case CMP_RESULT_CODE_REDIRECTED: { 3070 if (DBG) log("CheckMp.onComplete: warm sim"); 3071 String url = getMobileProvisioningUrl(); 3072 if (TextUtils.isEmpty(url)) { 3073 url = getMobileRedirectedProvisioningUrl(); 3074 } 3075 if (TextUtils.isEmpty(url) == false) { 3076 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 3077 setProvNotificationVisible(true, 3078 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3079 url); 3080 } else { 3081 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 3082 } 3083 break; 3084 } 3085 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 3086 String url = getMobileProvisioningUrl(); 3087 if (TextUtils.isEmpty(url) == false) { 3088 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 3089 setProvNotificationVisible(true, 3090 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3091 url); 3092 // Mark that we've got a provisioning network and 3093 // Disable Mobile Data until user actually starts provisioning. 3094 mIsProvisioningNetwork.set(true); 3095 MobileDataStateTracker mdst = (MobileDataStateTracker) 3096 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3097 3098 // Disable radio until user starts provisioning 3099 mdst.setRadio(false); 3100 } else { 3101 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 3102 } 3103 break; 3104 } 3105 case CMP_RESULT_CODE_IS_PROVISIONING: { 3106 // FIXME: Need to know when provisioning is done. Probably we can 3107 // check the completion status if successful we're done if we 3108 // "timedout" or still connected to provisioning APN turn off data? 3109 if (DBG) log("CheckMp.onComplete: provisioning started"); 3110 mIsStartingProvisioning.set(false); 3111 break; 3112 } 3113 default: { 3114 loge("CheckMp.onComplete: ignore unexpected result=" + result); 3115 break; 3116 } 3117 } 3118 mIsCheckingMobileProvisioning.set(false); 3119 } 3120 }; 3121 CheckMp.Params params = 3122 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 3123 if (DBG) log("checkMobileProvisioning: params=" + params); 3124 // TODO: Reenable when calls to the now defunct 3125 // MobileDataStateTracker.isProvisioningNetwork() are removed. 3126 // This code should be moved to the Telephony code. 3127 // checkMp.execute(params); 3128 } finally { 3129 Binder.restoreCallingIdentity(token); 3130 if (DBG) log("checkMobileProvisioning: X"); 3131 } 3132 return timeOutMs; 3133 } 3134 3135 static class CheckMp extends 3136 AsyncTask<CheckMp.Params, Void, Integer> { 3137 private static final String CHECKMP_TAG = "CheckMp"; 3138 3139 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 3140 private static boolean mTestingFailures; 3141 3142 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 3143 private static final int MAX_LOOPS = 4; 3144 3145 // Number of milli-seconds to complete all of the retires 3146 public static final int MAX_TIMEOUT_MS = 60000; 3147 3148 // The socket should retry only 5 seconds, the default is longer 3149 private static final int SOCKET_TIMEOUT_MS = 5000; 3150 3151 // Sleep time for network errors 3152 private static final int NET_ERROR_SLEEP_SEC = 3; 3153 3154 // Sleep time for network route establishment 3155 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 3156 3157 // Short sleep time for polling :( 3158 private static final int POLLING_SLEEP_SEC = 1; 3159 3160 private Context mContext; 3161 private ConnectivityService mCs; 3162 private TelephonyManager mTm; 3163 private Params mParams; 3164 3165 /** 3166 * Parameters for AsyncTask.execute 3167 */ 3168 static class Params { 3169 private String mUrl; 3170 private long mTimeOutMs; 3171 private CallBack mCb; 3172 3173 Params(String url, long timeOutMs, CallBack cb) { 3174 mUrl = url; 3175 mTimeOutMs = timeOutMs; 3176 mCb = cb; 3177 } 3178 3179 @Override 3180 public String toString() { 3181 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 3182 } 3183 } 3184 3185 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 3186 // issued by name or ip address, for Google its by name so when we construct 3187 // this HostnameVerifier we'll pass the original Uri and use it to verify 3188 // the host. If the host name in the original uril fails we'll test the 3189 // hostname parameter just incase things change. 3190 static class CheckMpHostnameVerifier implements HostnameVerifier { 3191 Uri mOrgUri; 3192 3193 CheckMpHostnameVerifier(Uri orgUri) { 3194 mOrgUri = orgUri; 3195 } 3196 3197 @Override 3198 public boolean verify(String hostname, SSLSession session) { 3199 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 3200 String orgUriHost = mOrgUri.getHost(); 3201 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 3202 if (DBG) { 3203 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 3204 + " orgUriHost=" + orgUriHost); 3205 } 3206 return retVal; 3207 } 3208 } 3209 3210 /** 3211 * The call back object passed in Params. onComplete will be called 3212 * on the main thread. 3213 */ 3214 abstract static class CallBack { 3215 // Called on the main thread. 3216 abstract void onComplete(Integer result); 3217 } 3218 3219 public CheckMp(Context context, ConnectivityService cs) { 3220 if (Build.IS_DEBUGGABLE) { 3221 mTestingFailures = 3222 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 3223 } else { 3224 mTestingFailures = false; 3225 } 3226 3227 mContext = context; 3228 mCs = cs; 3229 3230 // Setup access to TelephonyService we'll be using. 3231 mTm = (TelephonyManager) mContext.getSystemService( 3232 Context.TELEPHONY_SERVICE); 3233 } 3234 3235 /** 3236 * Get the default url to use for the test. 3237 */ 3238 public String getDefaultUrl() { 3239 // See http://go/clientsdns for usage approval 3240 String server = Settings.Global.getString(mContext.getContentResolver(), 3241 Settings.Global.CAPTIVE_PORTAL_SERVER); 3242 if (server == null) { 3243 server = "clients3.google.com"; 3244 } 3245 return "http://" + server + "/generate_204"; 3246 } 3247 3248 /** 3249 * Detect if its possible to connect to the http url. DNS based detection techniques 3250 * do not work at all hotspots. The best way to check is to perform a request to 3251 * a known address that fetches the data we expect. 3252 */ 3253 private synchronized Integer isMobileOk(Params params) { 3254 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 3255 Uri orgUri = Uri.parse(params.mUrl); 3256 Random rand = new Random(); 3257 mParams = params; 3258 3259 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 3260 result = CMP_RESULT_CODE_NO_CONNECTION; 3261 log("isMobileOk: X not mobile capable result=" + result); 3262 return result; 3263 } 3264 3265 if (mCs.mIsStartingProvisioning.get()) { 3266 result = CMP_RESULT_CODE_IS_PROVISIONING; 3267 log("isMobileOk: X is provisioning result=" + result); 3268 return result; 3269 } 3270 3271 // See if we've already determined we've got a provisioning connection, 3272 // if so we don't need to do anything active. 3273 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 3274 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3275 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 3276 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 3277 3278 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 3279 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3280 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 3281 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 3282 3283 if (isDefaultProvisioning || isHipriProvisioning) { 3284 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3285 log("isMobileOk: X default || hipri is provisioning result=" + result); 3286 return result; 3287 } 3288 3289 try { 3290 // Continue trying to connect until time has run out 3291 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 3292 3293 if (!mCs.isMobileDataStateTrackerReady()) { 3294 // Wait for MobileDataStateTracker to be ready. 3295 if (DBG) log("isMobileOk: mdst is not ready"); 3296 while(SystemClock.elapsedRealtime() < endTime) { 3297 if (mCs.isMobileDataStateTrackerReady()) { 3298 // Enable fail fast as we'll do retries here and use a 3299 // hipri connection so the default connection stays active. 3300 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 3301 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 3302 break; 3303 } 3304 sleep(POLLING_SLEEP_SEC); 3305 } 3306 } 3307 3308 log("isMobileOk: start hipri url=" + params.mUrl); 3309 3310 // First wait until we can start using hipri 3311 Binder binder = new Binder(); 3312/* 3313 while(SystemClock.elapsedRealtime() < endTime) { 3314 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3315 Phone.FEATURE_ENABLE_HIPRI, binder); 3316 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 3317 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 3318 log("isMobileOk: hipri started"); 3319 break; 3320 } 3321 if (VDBG) log("isMobileOk: hipri not started yet"); 3322 result = CMP_RESULT_CODE_NO_CONNECTION; 3323 sleep(POLLING_SLEEP_SEC); 3324 } 3325*/ 3326 // Continue trying to connect until time has run out 3327 while(SystemClock.elapsedRealtime() < endTime) { 3328 try { 3329 // Wait for hipri to connect. 3330 // TODO: Don't poll and handle situation where hipri fails 3331 // because default is retrying. See b/9569540 3332 NetworkInfo.State state = mCs 3333 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3334 if (state != NetworkInfo.State.CONNECTED) { 3335 if (true/*VDBG*/) { 3336 log("isMobileOk: not connected ni=" + 3337 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3338 } 3339 sleep(POLLING_SLEEP_SEC); 3340 result = CMP_RESULT_CODE_NO_CONNECTION; 3341 continue; 3342 } 3343 3344 // Hipri has started check if this is a provisioning url 3345 MobileDataStateTracker mdst = (MobileDataStateTracker) 3346 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3347 if (mdst.isProvisioningNetwork()) { 3348 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3349 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 3350 return result; 3351 } else { 3352 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 3353 } 3354 3355 // Get of the addresses associated with the url host. We need to use the 3356 // address otherwise HttpURLConnection object will use the name to get 3357 // the addresses and will try every address but that will bypass the 3358 // route to host we setup and the connection could succeed as the default 3359 // interface might be connected to the internet via wifi or other interface. 3360 InetAddress[] addresses; 3361 try { 3362 addresses = InetAddress.getAllByName(orgUri.getHost()); 3363 } catch (UnknownHostException e) { 3364 result = CMP_RESULT_CODE_NO_DNS; 3365 log("isMobileOk: X UnknownHostException result=" + result); 3366 return result; 3367 } 3368 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 3369 3370 // Get the type of addresses supported by this link 3371 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 3372 ConnectivityManager.TYPE_MOBILE_HIPRI); 3373 boolean linkHasIpv4 = lp.hasIPv4Address(); 3374 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 3375 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 3376 + " linkHasIpv6=" + linkHasIpv6); 3377 3378 final ArrayList<InetAddress> validAddresses = 3379 new ArrayList<InetAddress>(addresses.length); 3380 3381 for (InetAddress addr : addresses) { 3382 if (((addr instanceof Inet4Address) && linkHasIpv4) || 3383 ((addr instanceof Inet6Address) && linkHasIpv6)) { 3384 validAddresses.add(addr); 3385 } 3386 } 3387 3388 if (validAddresses.size() == 0) { 3389 return CMP_RESULT_CODE_NO_CONNECTION; 3390 } 3391 3392 int addrTried = 0; 3393 while (true) { 3394 // Loop through at most MAX_LOOPS valid addresses or until 3395 // we run out of time 3396 if (addrTried++ >= MAX_LOOPS) { 3397 log("isMobileOk: too many loops tried - giving up"); 3398 break; 3399 } 3400 if (SystemClock.elapsedRealtime() >= endTime) { 3401 log("isMobileOk: spend too much time - giving up"); 3402 break; 3403 } 3404 3405 InetAddress hostAddr = validAddresses.get(rand.nextInt( 3406 validAddresses.size())); 3407 3408 // Make a route to host so we check the specific interface. 3409 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 3410 hostAddr.getAddress())) { 3411 // Wait a short time to be sure the route is established ?? 3412 log("isMobileOk:" 3413 + " wait to establish route to hostAddr=" + hostAddr); 3414 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 3415 } else { 3416 log("isMobileOk:" 3417 + " could not establish route to hostAddr=" + hostAddr); 3418 // Wait a short time before the next attempt 3419 sleep(NET_ERROR_SLEEP_SEC); 3420 continue; 3421 } 3422 3423 // Rewrite the url to have numeric address to use the specific route 3424 // using http for half the attempts and https for the other half. 3425 // Doing https first and http second as on a redirected walled garden 3426 // such as t-mobile uses we get a SocketTimeoutException: "SSL 3427 // handshake timed out" which we declare as 3428 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 3429 // having http second we will be using logic used for some time. 3430 URL newUrl; 3431 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 3432 newUrl = new URL(scheme, hostAddr.getHostAddress(), 3433 orgUri.getPath()); 3434 log("isMobileOk: newUrl=" + newUrl); 3435 3436 HttpURLConnection urlConn = null; 3437 try { 3438 // Open the connection set the request headers and get the response 3439 urlConn = (HttpURLConnection)newUrl.openConnection( 3440 java.net.Proxy.NO_PROXY); 3441 if (scheme.equals("https")) { 3442 ((HttpsURLConnection)urlConn).setHostnameVerifier( 3443 new CheckMpHostnameVerifier(orgUri)); 3444 } 3445 urlConn.setInstanceFollowRedirects(false); 3446 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 3447 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 3448 urlConn.setUseCaches(false); 3449 urlConn.setAllowUserInteraction(false); 3450 // Set the "Connection" to "Close" as by default "Keep-Alive" 3451 // is used which is useless in this case. 3452 urlConn.setRequestProperty("Connection", "close"); 3453 int responseCode = urlConn.getResponseCode(); 3454 3455 // For debug display the headers 3456 Map<String, List<String>> headers = urlConn.getHeaderFields(); 3457 log("isMobileOk: headers=" + headers); 3458 3459 // Close the connection 3460 urlConn.disconnect(); 3461 urlConn = null; 3462 3463 if (mTestingFailures) { 3464 // Pretend no connection, this tests using http and https 3465 result = CMP_RESULT_CODE_NO_CONNECTION; 3466 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 3467 continue; 3468 } 3469 3470 if (responseCode == 204) { 3471 // Return 3472 result = CMP_RESULT_CODE_CONNECTABLE; 3473 log("isMobileOk: X got expected responseCode=" + responseCode 3474 + " result=" + result); 3475 return result; 3476 } else { 3477 // Retry to be sure this was redirected, we've gotten 3478 // occasions where a server returned 200 even though 3479 // the device didn't have a "warm" sim. 3480 log("isMobileOk: not expected responseCode=" + responseCode); 3481 // TODO - it would be nice in the single-address case to do 3482 // another DNS resolve here, but flushing the cache is a bit 3483 // heavy-handed. 3484 result = CMP_RESULT_CODE_REDIRECTED; 3485 } 3486 } catch (Exception e) { 3487 log("isMobileOk: HttpURLConnection Exception" + e); 3488 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 3489 if (urlConn != null) { 3490 urlConn.disconnect(); 3491 urlConn = null; 3492 } 3493 sleep(NET_ERROR_SLEEP_SEC); 3494 continue; 3495 } 3496 } 3497 log("isMobileOk: X loops|timed out result=" + result); 3498 return result; 3499 } catch (Exception e) { 3500 log("isMobileOk: Exception e=" + e); 3501 continue; 3502 } 3503 } 3504 log("isMobileOk: timed out"); 3505 } finally { 3506 log("isMobileOk: F stop hipri"); 3507 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 3508// mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3509// Phone.FEATURE_ENABLE_HIPRI); 3510 3511 // Wait for hipri to disconnect. 3512 long endTime = SystemClock.elapsedRealtime() + 5000; 3513 3514 while(SystemClock.elapsedRealtime() < endTime) { 3515 NetworkInfo.State state = mCs 3516 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3517 if (state != NetworkInfo.State.DISCONNECTED) { 3518 if (VDBG) { 3519 log("isMobileOk: connected ni=" + 3520 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3521 } 3522 sleep(POLLING_SLEEP_SEC); 3523 continue; 3524 } 3525 } 3526 3527 log("isMobileOk: X result=" + result); 3528 } 3529 return result; 3530 } 3531 3532 @Override 3533 protected Integer doInBackground(Params... params) { 3534 return isMobileOk(params[0]); 3535 } 3536 3537 @Override 3538 protected void onPostExecute(Integer result) { 3539 log("onPostExecute: result=" + result); 3540 if ((mParams != null) && (mParams.mCb != null)) { 3541 mParams.mCb.onComplete(result); 3542 } 3543 } 3544 3545 private String inetAddressesToString(InetAddress[] addresses) { 3546 StringBuffer sb = new StringBuffer(); 3547 boolean firstTime = true; 3548 for(InetAddress addr : addresses) { 3549 if (firstTime) { 3550 firstTime = false; 3551 } else { 3552 sb.append(","); 3553 } 3554 sb.append(addr); 3555 } 3556 return sb.toString(); 3557 } 3558 3559 private void printNetworkInfo() { 3560 boolean hasIccCard = mTm.hasIccCard(); 3561 int simState = mTm.getSimState(); 3562 log("hasIccCard=" + hasIccCard 3563 + " simState=" + simState); 3564 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 3565 if (ni != null) { 3566 log("ni.length=" + ni.length); 3567 for (NetworkInfo netInfo: ni) { 3568 log("netInfo=" + netInfo.toString()); 3569 } 3570 } else { 3571 log("no network info ni=null"); 3572 } 3573 } 3574 3575 /** 3576 * Sleep for a few seconds then return. 3577 * @param seconds 3578 */ 3579 private static void sleep(int seconds) { 3580 long stopTime = System.nanoTime() + (seconds * 1000000000); 3581 long sleepTime; 3582 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 3583 try { 3584 Thread.sleep(sleepTime / 1000000); 3585 } catch (InterruptedException ignored) { 3586 } 3587 } 3588 } 3589 3590 private static void log(String s) { 3591 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 3592 } 3593 } 3594 3595 // TODO: Move to ConnectivityManager and make public? 3596 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 3597 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 3598 3599 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 3600 @Override 3601 public void onReceive(Context context, Intent intent) { 3602 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 3603 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 3604 } 3605 } 3606 }; 3607 3608 private void handleMobileProvisioningAction(String url) { 3609 // Mark notification as not visible 3610 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3611 3612 // Check airplane mode 3613 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 3614 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 3615 // If provisioning network and not in airplane mode handle as a special case, 3616 // otherwise launch browser with the intent directly. 3617 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 3618 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 3619 mIsProvisioningNetwork.set(false); 3620// mIsStartingProvisioning.set(true); 3621// MobileDataStateTracker mdst = (MobileDataStateTracker) 3622// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3623 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 3624// mdst.setRadio(true); 3625// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 3626// mdst.enableMobileProvisioning(url); 3627 } else { 3628 if (DBG) log("handleMobileProvisioningAction: not prov network"); 3629 mIsProvisioningNetwork.set(false); 3630 // Check for apps that can handle provisioning first 3631 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 3632 List<String> carrierPackages = 3633 mTelephonyManager.getCarrierPackageNamesForIntent(provisioningIntent); 3634 if (carrierPackages != null && !carrierPackages.isEmpty()) { 3635 if (carrierPackages.size() != 1) { 3636 if (DBG) log("Multiple matching carrier apps found, launching the first."); 3637 } 3638 provisioningIntent.setPackage(carrierPackages.get(0)); 3639 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3640 Intent.FLAG_ACTIVITY_NEW_TASK); 3641 mContext.startActivity(provisioningIntent); 3642 } else { 3643 // If no apps exist, use standard URL ACTION_VIEW method 3644 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 3645 Intent.CATEGORY_APP_BROWSER); 3646 newIntent.setData(Uri.parse(url)); 3647 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3648 Intent.FLAG_ACTIVITY_NEW_TASK); 3649 try { 3650 mContext.startActivity(newIntent); 3651 } catch (ActivityNotFoundException e) { 3652 loge("handleMobileProvisioningAction: startActivity failed" + e); 3653 } 3654 } 3655 } 3656 } 3657 3658 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3659 private volatile boolean mIsNotificationVisible = false; 3660 3661 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 3662 String url) { 3663 if (DBG) { 3664 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3665 + " extraInfo=" + extraInfo + " url=" + url); 3666 } 3667 Intent intent = null; 3668 PendingIntent pendingIntent = null; 3669 if (visible) { 3670 switch (networkType) { 3671 case ConnectivityManager.TYPE_WIFI: 3672 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3673 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3674 Intent.FLAG_ACTIVITY_NEW_TASK); 3675 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3676 break; 3677 case ConnectivityManager.TYPE_MOBILE: 3678 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3679 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 3680 intent.putExtra("EXTRA_URL", url); 3681 intent.setFlags(0); 3682 pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3683 break; 3684 default: 3685 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3686 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3687 Intent.FLAG_ACTIVITY_NEW_TASK); 3688 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3689 break; 3690 } 3691 } 3692 // Concatenate the range of types onto the range of NetIDs. 3693 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3694 setProvNotificationVisibleIntent(visible, id, networkType, extraInfo, pendingIntent); 3695 } 3696 3697 /** 3698 * Show or hide network provisioning notificaitons. 3699 * 3700 * @param id an identifier that uniquely identifies this notification. This must match 3701 * between show and hide calls. We use the NetID value but for legacy callers 3702 * we concatenate the range of types with the range of NetIDs. 3703 */ 3704 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3705 String extraInfo, PendingIntent intent) { 3706 if (DBG) { 3707 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3708 networkType + " extraInfo=" + extraInfo); 3709 } 3710 3711 Resources r = Resources.getSystem(); 3712 NotificationManager notificationManager = (NotificationManager) mContext 3713 .getSystemService(Context.NOTIFICATION_SERVICE); 3714 3715 if (visible) { 3716 CharSequence title; 3717 CharSequence details; 3718 int icon; 3719 Notification notification = new Notification(); 3720 switch (networkType) { 3721 case ConnectivityManager.TYPE_WIFI: 3722 title = r.getString(R.string.wifi_available_sign_in, 0); 3723 details = r.getString(R.string.network_available_sign_in_detailed, 3724 extraInfo); 3725 icon = R.drawable.stat_notify_wifi_in_range; 3726 break; 3727 case ConnectivityManager.TYPE_MOBILE: 3728 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3729 title = r.getString(R.string.network_available_sign_in, 0); 3730 // TODO: Change this to pull from NetworkInfo once a printable 3731 // name has been added to it 3732 details = mTelephonyManager.getNetworkOperatorName(); 3733 icon = R.drawable.stat_notify_rssi_in_range; 3734 break; 3735 default: 3736 title = r.getString(R.string.network_available_sign_in, 0); 3737 details = r.getString(R.string.network_available_sign_in_detailed, 3738 extraInfo); 3739 icon = R.drawable.stat_notify_rssi_in_range; 3740 break; 3741 } 3742 3743 notification.when = 0; 3744 notification.icon = icon; 3745 notification.flags = Notification.FLAG_AUTO_CANCEL; 3746 notification.tickerText = title; 3747 notification.color = mContext.getResources().getColor( 3748 com.android.internal.R.color.system_notification_accent_color); 3749 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3750 notification.contentIntent = intent; 3751 3752 try { 3753 notificationManager.notify(NOTIFICATION_ID, id, notification); 3754 } catch (NullPointerException npe) { 3755 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3756 npe.printStackTrace(); 3757 } 3758 } else { 3759 try { 3760 notificationManager.cancel(NOTIFICATION_ID, id); 3761 } catch (NullPointerException npe) { 3762 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3763 npe.printStackTrace(); 3764 } 3765 } 3766 mIsNotificationVisible = visible; 3767 } 3768 3769 /** Location to an updatable file listing carrier provisioning urls. 3770 * An example: 3771 * 3772 * <?xml version="1.0" encoding="utf-8"?> 3773 * <provisioningUrls> 3774 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3775 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3776 * </provisioningUrls> 3777 */ 3778 private static final String PROVISIONING_URL_PATH = 3779 "/data/misc/radio/provisioning_urls.xml"; 3780 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3781 3782 /** XML tag for root element. */ 3783 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3784 /** XML tag for individual url */ 3785 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3786 /** XML tag for redirected url */ 3787 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3788 /** XML attribute for mcc */ 3789 private static final String ATTR_MCC = "mcc"; 3790 /** XML attribute for mnc */ 3791 private static final String ATTR_MNC = "mnc"; 3792 3793 private static final int REDIRECTED_PROVISIONING = 1; 3794 private static final int PROVISIONING = 2; 3795 3796 private String getProvisioningUrlBaseFromFile(int type) { 3797 FileReader fileReader = null; 3798 XmlPullParser parser = null; 3799 Configuration config = mContext.getResources().getConfiguration(); 3800 String tagType; 3801 3802 switch (type) { 3803 case PROVISIONING: 3804 tagType = TAG_PROVISIONING_URL; 3805 break; 3806 case REDIRECTED_PROVISIONING: 3807 tagType = TAG_REDIRECTED_URL; 3808 break; 3809 default: 3810 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3811 type); 3812 } 3813 3814 try { 3815 fileReader = new FileReader(mProvisioningUrlFile); 3816 parser = Xml.newPullParser(); 3817 parser.setInput(fileReader); 3818 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3819 3820 while (true) { 3821 XmlUtils.nextElement(parser); 3822 3823 String element = parser.getName(); 3824 if (element == null) break; 3825 3826 if (element.equals(tagType)) { 3827 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3828 try { 3829 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3830 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3831 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3832 parser.next(); 3833 if (parser.getEventType() == XmlPullParser.TEXT) { 3834 return parser.getText(); 3835 } 3836 } 3837 } 3838 } catch (NumberFormatException e) { 3839 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3840 } 3841 } 3842 } 3843 return null; 3844 } catch (FileNotFoundException e) { 3845 loge("Carrier Provisioning Urls file not found"); 3846 } catch (XmlPullParserException e) { 3847 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3848 } catch (IOException e) { 3849 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3850 } finally { 3851 if (fileReader != null) { 3852 try { 3853 fileReader.close(); 3854 } catch (IOException e) {} 3855 } 3856 } 3857 return null; 3858 } 3859 3860 @Override 3861 public String getMobileRedirectedProvisioningUrl() { 3862 enforceConnectivityInternalPermission(); 3863 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3864 if (TextUtils.isEmpty(url)) { 3865 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3866 } 3867 return url; 3868 } 3869 3870 @Override 3871 public String getMobileProvisioningUrl() { 3872 enforceConnectivityInternalPermission(); 3873 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3874 if (TextUtils.isEmpty(url)) { 3875 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3876 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3877 } else { 3878 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3879 } 3880 // populate the iccid, imei and phone number in the provisioning url. 3881 if (!TextUtils.isEmpty(url)) { 3882 String phoneNumber = mTelephonyManager.getLine1Number(); 3883 if (TextUtils.isEmpty(phoneNumber)) { 3884 phoneNumber = "0000000000"; 3885 } 3886 url = String.format(url, 3887 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3888 mTelephonyManager.getDeviceId() /* IMEI */, 3889 phoneNumber /* Phone numer */); 3890 } 3891 3892 return url; 3893 } 3894 3895 @Override 3896 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3897 String extraInfo, String url) { 3898 enforceConnectivityInternalPermission(); 3899 setProvNotificationVisible(visible, networkType, extraInfo, url); 3900 } 3901 3902 @Override 3903 public void setAirplaneMode(boolean enable) { 3904 enforceConnectivityInternalPermission(); 3905 final long ident = Binder.clearCallingIdentity(); 3906 try { 3907 final ContentResolver cr = mContext.getContentResolver(); 3908 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3909 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3910 intent.putExtra("state", enable); 3911 mContext.sendBroadcast(intent); 3912 } finally { 3913 Binder.restoreCallingIdentity(ident); 3914 } 3915 } 3916 3917 private void onUserStart(int userId) { 3918 synchronized(mVpns) { 3919 Vpn userVpn = mVpns.get(userId); 3920 if (userVpn != null) { 3921 loge("Starting user already has a VPN"); 3922 return; 3923 } 3924 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3925 mVpns.put(userId, userVpn); 3926 } 3927 } 3928 3929 private void onUserStop(int userId) { 3930 synchronized(mVpns) { 3931 Vpn userVpn = mVpns.get(userId); 3932 if (userVpn == null) { 3933 loge("Stopping user has no VPN"); 3934 return; 3935 } 3936 mVpns.delete(userId); 3937 } 3938 } 3939 3940 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3941 @Override 3942 public void onReceive(Context context, Intent intent) { 3943 final String action = intent.getAction(); 3944 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3945 if (userId == UserHandle.USER_NULL) return; 3946 3947 if (Intent.ACTION_USER_STARTING.equals(action)) { 3948 onUserStart(userId); 3949 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3950 onUserStop(userId); 3951 } 3952 } 3953 }; 3954 3955 @Override 3956 public LinkQualityInfo getLinkQualityInfo(int networkType) { 3957 enforceAccessPermission(); 3958 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3959 return mNetTrackers[networkType].getLinkQualityInfo(); 3960 } else { 3961 return null; 3962 } 3963 } 3964 3965 @Override 3966 public LinkQualityInfo getActiveLinkQualityInfo() { 3967 enforceAccessPermission(); 3968 if (isNetworkTypeValid(mActiveDefaultNetwork) && 3969 mNetTrackers[mActiveDefaultNetwork] != null) { 3970 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 3971 } else { 3972 return null; 3973 } 3974 } 3975 3976 @Override 3977 public LinkQualityInfo[] getAllLinkQualityInfo() { 3978 enforceAccessPermission(); 3979 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 3980 for (NetworkStateTracker tracker : mNetTrackers) { 3981 if (tracker != null) { 3982 LinkQualityInfo li = tracker.getLinkQualityInfo(); 3983 if (li != null) { 3984 result.add(li); 3985 } 3986 } 3987 } 3988 3989 return result.toArray(new LinkQualityInfo[result.size()]); 3990 } 3991 3992 /* Infrastructure for network sampling */ 3993 3994 private void handleNetworkSamplingTimeout() { 3995 3996 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3997 3998 // initialize list of interfaces .. 3999 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 4000 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 4001 for (NetworkStateTracker tracker : mNetTrackers) { 4002 if (tracker != null) { 4003 String ifaceName = tracker.getNetworkInterfaceName(); 4004 if (ifaceName != null) { 4005 mapIfaceToSample.put(ifaceName, null); 4006 } 4007 } 4008 } 4009 4010 // Read samples for all interfaces 4011 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4012 4013 // process samples for all networks 4014 for (NetworkStateTracker tracker : mNetTrackers) { 4015 if (tracker != null) { 4016 String ifaceName = tracker.getNetworkInterfaceName(); 4017 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 4018 if (ss != null) { 4019 // end the previous sampling cycle 4020 tracker.stopSampling(ss); 4021 // start a new sampling cycle .. 4022 tracker.startSampling(ss); 4023 } 4024 } 4025 } 4026 4027 if (SAMPLE_DBG) log("Done."); 4028 4029 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 4030 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 4031 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 4032 4033 if (SAMPLE_DBG) { 4034 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 4035 } 4036 4037 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 4038 } 4039 4040 /** 4041 * Sets a network sampling alarm. 4042 */ 4043 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 4044 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 4045 int alarmType; 4046 if (Resources.getSystem().getBoolean( 4047 R.bool.config_networkSamplingWakesDevice)) { 4048 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 4049 } else { 4050 alarmType = AlarmManager.ELAPSED_REALTIME; 4051 } 4052 mAlarmManager.set(alarmType, wakeupTime, intent); 4053 } 4054 4055 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 4056 new HashMap<Messenger, NetworkFactoryInfo>(); 4057 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 4058 new HashMap<NetworkRequest, NetworkRequestInfo>(); 4059 4060 private static class NetworkFactoryInfo { 4061 public final String name; 4062 public final Messenger messenger; 4063 public final AsyncChannel asyncChannel; 4064 4065 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 4066 this.name = name; 4067 this.messenger = messenger; 4068 this.asyncChannel = asyncChannel; 4069 } 4070 } 4071 4072 /** 4073 * Tracks info about the requester. 4074 * Also used to notice when the calling process dies so we can self-expire 4075 */ 4076 private class NetworkRequestInfo implements IBinder.DeathRecipient { 4077 static final boolean REQUEST = true; 4078 static final boolean LISTEN = false; 4079 4080 final NetworkRequest request; 4081 IBinder mBinder; 4082 final int mPid; 4083 final int mUid; 4084 final Messenger messenger; 4085 final boolean isRequest; 4086 4087 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 4088 super(); 4089 messenger = m; 4090 request = r; 4091 mBinder = binder; 4092 mPid = getCallingPid(); 4093 mUid = getCallingUid(); 4094 this.isRequest = isRequest; 4095 4096 try { 4097 mBinder.linkToDeath(this, 0); 4098 } catch (RemoteException e) { 4099 binderDied(); 4100 } 4101 } 4102 4103 void unlinkDeathRecipient() { 4104 mBinder.unlinkToDeath(this, 0); 4105 } 4106 4107 public void binderDied() { 4108 log("ConnectivityService NetworkRequestInfo binderDied(" + 4109 request + ", " + mBinder + ")"); 4110 releaseNetworkRequest(request); 4111 } 4112 4113 public String toString() { 4114 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 4115 mPid + " for " + request; 4116 } 4117 } 4118 4119 @Override 4120 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 4121 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 4122 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 4123 == false) { 4124 enforceConnectivityInternalPermission(); 4125 } else { 4126 enforceChangePermission(); 4127 } 4128 4129 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4130 4131 // if UID is restricted, don't allow them to bring up metered APNs 4132 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 4133 == false) { 4134 final int uidRules; 4135 synchronized(mRulesLock) { 4136 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 4137 } 4138 if ((uidRules & RULE_REJECT_METERED) != 0) { 4139 // we could silently fail or we can filter the available nets to only give 4140 // them those they have access to. Chose the more useful 4141 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 4142 } 4143 } 4144 4145 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 4146 throw new IllegalArgumentException("Bad timeout specified"); 4147 } 4148 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 4149 nextNetworkRequestId()); 4150 if (DBG) log("requestNetwork for " + networkRequest); 4151 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4152 NetworkRequestInfo.REQUEST); 4153 4154 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 4155 if (timeoutMs > 0) { 4156 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 4157 nri), timeoutMs); 4158 } 4159 return networkRequest; 4160 } 4161 4162 @Override 4163 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4164 PendingIntent operation) { 4165 // TODO 4166 return null; 4167 } 4168 4169 @Override 4170 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4171 Messenger messenger, IBinder binder) { 4172 enforceAccessPermission(); 4173 4174 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 4175 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4176 if (DBG) log("listenForNetwork for " + networkRequest); 4177 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4178 NetworkRequestInfo.LISTEN); 4179 4180 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4181 return networkRequest; 4182 } 4183 4184 @Override 4185 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4186 PendingIntent operation) { 4187 } 4188 4189 @Override 4190 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4191 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4192 0, networkRequest)); 4193 } 4194 4195 @Override 4196 public void registerNetworkFactory(Messenger messenger, String name) { 4197 enforceConnectivityInternalPermission(); 4198 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4199 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4200 } 4201 4202 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4203 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4204 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4205 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4206 } 4207 4208 @Override 4209 public void unregisterNetworkFactory(Messenger messenger) { 4210 enforceConnectivityInternalPermission(); 4211 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4212 } 4213 4214 private void handleUnregisterNetworkFactory(Messenger messenger) { 4215 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4216 if (nfi == null) { 4217 loge("Failed to find Messenger in unregisterNetworkFactory"); 4218 return; 4219 } 4220 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4221 } 4222 4223 /** 4224 * NetworkAgentInfo supporting a request by requestId. 4225 * These have already been vetted (their Capabilities satisfy the request) 4226 * and the are the highest scored network available. 4227 * the are keyed off the Requests requestId. 4228 */ 4229 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4230 new SparseArray<NetworkAgentInfo>(); 4231 4232 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4233 new SparseArray<NetworkAgentInfo>(); 4234 4235 // NetworkAgentInfo keyed off its connecting messenger 4236 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4237 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4238 new HashMap<Messenger, NetworkAgentInfo>(); 4239 4240 private final NetworkRequest mDefaultRequest; 4241 4242 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4243 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 4244 } 4245 4246 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4247 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4248 int currentScore, NetworkMisc networkMisc) { 4249 enforceConnectivityInternalPermission(); 4250 4251 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4252 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 4253 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 4254 new NetworkMisc(networkMisc)); 4255 synchronized (this) { 4256 nai.networkMonitor.systemReady = mSystemReady; 4257 } 4258 if (DBG) log("registerNetworkAgent " + nai); 4259 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4260 } 4261 4262 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4263 if (VDBG) log("Got NetworkAgent Messenger"); 4264 mNetworkAgentInfos.put(na.messenger, na); 4265 assignNextNetId(na); 4266 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4267 NetworkInfo networkInfo = na.networkInfo; 4268 na.networkInfo = null; 4269 updateNetworkInfo(na, networkInfo); 4270 } 4271 4272 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4273 LinkProperties newLp = networkAgent.linkProperties; 4274 int netId = networkAgent.network.netId; 4275 4276 updateInterfaces(newLp, oldLp, netId); 4277 updateMtu(newLp, oldLp); 4278 updateTcpBufferSizes(networkAgent); 4279 // TODO - figure out what to do for clat 4280// for (LinkProperties lp : newLp.getStackedLinks()) { 4281// updateMtu(lp, null); 4282// } 4283 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 4284 updateDnses(newLp, oldLp, netId, flushDns); 4285 updateClat(newLp, oldLp, networkAgent); 4286 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 4287 } 4288 4289 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 4290 // Update 464xlat state. 4291 if (mClat.requiresClat(na)) { 4292 4293 // If the connection was previously using clat, but is not using it now, stop the clat 4294 // daemon. Normally, this happens automatically when the connection disconnects, but if 4295 // the disconnect is not reported, or if the connection's LinkProperties changed for 4296 // some other reason (e.g., handoff changes the IP addresses on the link), it would 4297 // still be running. If it's not running, then stopping it is a no-op. 4298 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 4299 mClat.stopClat(); 4300 } 4301 // If the link requires clat to be running, then start the daemon now. 4302 if (na.networkInfo.isConnected()) { 4303 mClat.startClat(na); 4304 } else { 4305 mClat.stopClat(); 4306 } 4307 } 4308 } 4309 4310 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4311 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4312 if (oldLp != null) { 4313 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4314 } else if (newLp != null) { 4315 interfaceDiff.added = newLp.getAllInterfaceNames(); 4316 } 4317 for (String iface : interfaceDiff.added) { 4318 try { 4319 if (DBG) log("Adding iface " + iface + " to network " + netId); 4320 mNetd.addInterfaceToNetwork(iface, netId); 4321 } catch (Exception e) { 4322 loge("Exception adding interface: " + e); 4323 } 4324 } 4325 for (String iface : interfaceDiff.removed) { 4326 try { 4327 if (DBG) log("Removing iface " + iface + " from network " + netId); 4328 mNetd.removeInterfaceFromNetwork(iface, netId); 4329 } catch (Exception e) { 4330 loge("Exception removing interface: " + e); 4331 } 4332 } 4333 } 4334 4335 /** 4336 * Have netd update routes from oldLp to newLp. 4337 * @return true if routes changed between oldLp and newLp 4338 */ 4339 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4340 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4341 if (oldLp != null) { 4342 routeDiff = oldLp.compareAllRoutes(newLp); 4343 } else if (newLp != null) { 4344 routeDiff.added = newLp.getAllRoutes(); 4345 } 4346 4347 // add routes before removing old in case it helps with continuous connectivity 4348 4349 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4350 for (RouteInfo route : routeDiff.added) { 4351 if (route.hasGateway()) continue; 4352 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4353 try { 4354 mNetd.addRoute(netId, route); 4355 } catch (Exception e) { 4356 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4357 loge("Exception in addRoute for non-gateway: " + e); 4358 } 4359 } 4360 } 4361 for (RouteInfo route : routeDiff.added) { 4362 if (route.hasGateway() == false) continue; 4363 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4364 try { 4365 mNetd.addRoute(netId, route); 4366 } catch (Exception e) { 4367 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4368 loge("Exception in addRoute for gateway: " + e); 4369 } 4370 } 4371 } 4372 4373 for (RouteInfo route : routeDiff.removed) { 4374 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4375 try { 4376 mNetd.removeRoute(netId, route); 4377 } catch (Exception e) { 4378 loge("Exception in removeRoute: " + e); 4379 } 4380 } 4381 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4382 } 4383 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) { 4384 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4385 Collection<InetAddress> dnses = newLp.getDnsServers(); 4386 if (dnses.size() == 0 && mDefaultDns != null) { 4387 dnses = new ArrayList(); 4388 dnses.add(mDefaultDns); 4389 if (DBG) { 4390 loge("no dns provided for netId " + netId + ", so using defaults"); 4391 } 4392 } 4393 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4394 try { 4395 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4396 newLp.getDomains()); 4397 } catch (Exception e) { 4398 loge("Exception in setDnsServersForNetwork: " + e); 4399 } 4400 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4401 if (defaultNai != null && defaultNai.network.netId == netId) { 4402 setDefaultDnsSystemProperties(dnses); 4403 } 4404 flushVmDnsCache(); 4405 } else if (flush) { 4406 try { 4407 mNetd.flushNetworkDnsCache(netId); 4408 } catch (Exception e) { 4409 loge("Exception in flushNetworkDnsCache: " + e); 4410 } 4411 flushVmDnsCache(); 4412 } 4413 } 4414 4415 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4416 int last = 0; 4417 for (InetAddress dns : dnses) { 4418 ++last; 4419 String key = "net.dns" + last; 4420 String value = dns.getHostAddress(); 4421 SystemProperties.set(key, value); 4422 } 4423 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4424 String key = "net.dns" + i; 4425 SystemProperties.set(key, ""); 4426 } 4427 mNumDnsEntries = last; 4428 } 4429 4430 4431 private void updateCapabilities(NetworkAgentInfo networkAgent, 4432 NetworkCapabilities networkCapabilities) { 4433 // TODO - what else here? Verify still satisfies everybody? 4434 // Check if satisfies somebody new? call callbacks? 4435 synchronized (networkAgent) { 4436 networkAgent.networkCapabilities = networkCapabilities; 4437 } 4438 } 4439 4440 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4441 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4442 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4443 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4444 networkRequest); 4445 } 4446 } 4447 4448 private void callCallbackForRequest(NetworkRequestInfo nri, 4449 NetworkAgentInfo networkAgent, int notificationType) { 4450 if (nri.messenger == null) return; // Default request has no msgr 4451 Object o; 4452 int a1 = 0; 4453 int a2 = 0; 4454 switch (notificationType) { 4455 case ConnectivityManager.CALLBACK_LOSING: 4456 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 4457 // fall through 4458 case ConnectivityManager.CALLBACK_PRECHECK: 4459 case ConnectivityManager.CALLBACK_AVAILABLE: 4460 case ConnectivityManager.CALLBACK_LOST: 4461 case ConnectivityManager.CALLBACK_CAP_CHANGED: 4462 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4463 o = new NetworkRequest(nri.request); 4464 a2 = networkAgent.network.netId; 4465 break; 4466 } 4467 case ConnectivityManager.CALLBACK_UNAVAIL: 4468 case ConnectivityManager.CALLBACK_RELEASED: { 4469 o = new NetworkRequest(nri.request); 4470 break; 4471 } 4472 default: { 4473 loge("Unknown notificationType " + notificationType); 4474 return; 4475 } 4476 } 4477 Message msg = Message.obtain(); 4478 msg.arg1 = a1; 4479 msg.arg2 = a2; 4480 msg.obj = o; 4481 msg.what = notificationType; 4482 try { 4483 if (VDBG) { 4484 log("sending notification " + notifyTypeToName(notificationType) + 4485 " for " + nri.request); 4486 } 4487 nri.messenger.send(msg); 4488 } catch (RemoteException e) { 4489 // may occur naturally in the race of binder death. 4490 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4491 } 4492 } 4493 4494 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4495 if (oldNetwork == null) { 4496 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4497 return; 4498 } 4499 if (DBG) { 4500 log("handleLingerComplete for " + oldNetwork.name()); 4501 for (int i = 0; i < oldNetwork.networkRequests.size(); i++) { 4502 NetworkRequest nr = oldNetwork.networkRequests.valueAt(i); 4503 // Ignore listening requests. 4504 if (mNetworkRequests.get(nr).isRequest == false) continue; 4505 loge("Dead network still had at least " + nr); 4506 break; 4507 } 4508 } 4509 oldNetwork.asyncChannel.disconnect(); 4510 } 4511 4512 private void makeDefault(NetworkAgentInfo newNetwork) { 4513 if (DBG) log("Switching to new default network: " + newNetwork); 4514 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4515 setupDataActivityTracking(newNetwork); 4516 try { 4517 mNetd.setDefaultNetId(newNetwork.network.netId); 4518 } catch (Exception e) { 4519 loge("Exception setting default network :" + e); 4520 } 4521 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4522 updateTcpBufferSizes(newNetwork); 4523 } 4524 4525 // Handles a network appearing or improving its score. 4526 // 4527 // - Evaluates all current NetworkRequests that can be 4528 // satisfied by newNetwork, and reassigns to newNetwork 4529 // any such requests for which newNetwork is the best. 4530 // 4531 // - Tears down any Networks that as a result are no longer 4532 // needed. A network is needed if it is the best network for 4533 // one or more NetworkRequests, or if it is a VPN. 4534 // 4535 // - Tears down newNetwork if it is validated but turns out to be 4536 // unneeded. Does not tear down newNetwork if it is 4537 // unvalidated, because future validation may improve 4538 // newNetwork's score enough that it is needed. 4539 // 4540 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4541 // it does not remove NetworkRequests that other Networks could better satisfy. 4542 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4543 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4544 // as it performs better by a factor of the number of Networks. 4545 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork) { 4546 boolean keep = newNetwork.isVPN(); 4547 boolean isNewDefault = false; 4548 if (DBG) log("rematching " + newNetwork.name()); 4549 // Find and migrate to this Network any NetworkRequests for 4550 // which this network is now the best. 4551 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4552 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4553 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4554 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4555 if (newNetwork == currentNetwork) { 4556 if (DBG) { 4557 log("Network " + newNetwork.name() + " was already satisfying" + 4558 " request " + nri.request.requestId + ". No change."); 4559 } 4560 keep = true; 4561 continue; 4562 } 4563 4564 // check if it satisfies the NetworkCapabilities 4565 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4566 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 4567 newNetwork.networkCapabilities)) { 4568 if (!nri.isRequest) { 4569 // This is not a request, it's a callback listener. 4570 // Add it to newNetwork regardless of score. 4571 newNetwork.addRequest(nri.request); 4572 continue; 4573 } 4574 4575 // next check if it's better than any current network we're using for 4576 // this request 4577 if (VDBG) { 4578 log("currentScore = " + 4579 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4580 ", newScore = " + newNetwork.getCurrentScore()); 4581 } 4582 if (currentNetwork == null || 4583 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4584 if (currentNetwork != null) { 4585 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4586 currentNetwork.networkRequests.remove(nri.request.requestId); 4587 currentNetwork.networkLingered.add(nri.request); 4588 affectedNetworks.add(currentNetwork); 4589 } else { 4590 if (DBG) log(" accepting network in place of null"); 4591 } 4592 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4593 newNetwork.addRequest(nri.request); 4594 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4595 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4596 } 4597 keep = true; 4598 // Tell NetworkFactories about the new score, so they can stop 4599 // trying to connect if they know they cannot match it. 4600 // TODO - this could get expensive if we have alot of requests for this 4601 // network. Think about if there is a way to reduce this. Push 4602 // netid->request mapping to each factory? 4603 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4604 if (mDefaultRequest.requestId == nri.request.requestId) { 4605 isNewDefault = true; 4606 // TODO: Remove following line. It's redundant with makeDefault call. 4607 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4608 if (newNetwork.linkProperties != null) { 4609 updateTcpBufferSizes(newNetwork); 4610 setDefaultDnsSystemProperties( 4611 newNetwork.linkProperties.getDnsServers()); 4612 } else { 4613 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4614 } 4615 // Maintain the illusion: since the legacy API only 4616 // understands one network at a time, we must pretend 4617 // that the current default network disconnected before 4618 // the new one connected. 4619 if (currentNetwork != null) { 4620 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4621 currentNetwork); 4622 } 4623 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4624 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4625 } 4626 } 4627 } 4628 } 4629 // Linger any networks that are no longer needed. 4630 for (NetworkAgentInfo nai : affectedNetworks) { 4631 boolean teardown = !nai.isVPN(); 4632 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4633 NetworkRequest nr = nai.networkRequests.valueAt(i); 4634 try { 4635 if (mNetworkRequests.get(nr).isRequest) { 4636 teardown = false; 4637 } 4638 } catch (Exception e) { 4639 loge("Request " + nr + " not found in mNetworkRequests."); 4640 loge(" it came from request list of " + nai.name()); 4641 } 4642 } 4643 if (teardown) { 4644 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4645 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4646 } else { 4647 // not going to linger, so kill the list of linger networks.. only 4648 // notify them of linger if it happens as the result of gaining another, 4649 // but if they transition and old network stays up, don't tell them of linger 4650 // or very delayed loss 4651 nai.networkLingered.clear(); 4652 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 4653 } 4654 } 4655 if (keep) { 4656 if (isNewDefault) { 4657 // Notify system services that this network is up. 4658 makeDefault(newNetwork); 4659 synchronized (ConnectivityService.this) { 4660 // have a new default network, release the transition wakelock in 4661 // a second if it's held. The second pause is to allow apps 4662 // to reconnect over the new network 4663 if (mNetTransitionWakeLock.isHeld()) { 4664 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4665 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4666 mNetTransitionWakeLockSerialNumber, 0), 4667 1000); 4668 } 4669 } 4670 } 4671 4672 // Notify battery stats service about this network, both the normal 4673 // interface and any stacked links. 4674 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4675 try { 4676 final IBatteryStats bs = BatteryStatsService.getService(); 4677 final int type = newNetwork.networkInfo.getType(); 4678 4679 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4680 bs.noteNetworkInterfaceType(baseIface, type); 4681 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4682 final String stackedIface = stacked.getInterfaceName(); 4683 bs.noteNetworkInterfaceType(stackedIface, type); 4684 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4685 } 4686 } catch (RemoteException ignored) { 4687 } 4688 4689 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4690 } else if (newNetwork.validated) { 4691 // Only tear down validated networks here. Leave unvalidated to either become 4692 // validated (and get evaluated against peers, one losing here) or 4693 // NetworkMonitor reports a bad network and we tear it down then. 4694 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 4695 // satisfy no NetworkRequests. 4696 if (DBG && newNetwork.networkRequests.size() != 0) { 4697 loge("tearing down network with live requests:"); 4698 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 4699 loge(" " + newNetwork.networkRequests.valueAt(i)); 4700 } 4701 } 4702 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4703 newNetwork.asyncChannel.disconnect(); 4704 } 4705 } 4706 4707 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4708 // being disconnected. 4709 // If only one Network's score or capabilities have been modified since the last time 4710 // this function was called, pass this Network in via the "changed" arugment, otherwise 4711 // pass null. 4712 // If only one Network has been changed but its NetworkCapabilities have not changed, 4713 // pass in the Network's score (from getCurrentScore()) prior to the change via 4714 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4715 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4716 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4717 // to avoid the slowness. It is not simply enough to process just "changed", for 4718 // example in the case where "changed"'s score decreases and another network should begin 4719 // satifying a NetworkRequest that "changed" currently satisfies. 4720 4721 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4722 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4723 // rematchNetworkAndRequests() handles. 4724 if (changed != null && oldScore < changed.getCurrentScore()) { 4725 rematchNetworkAndRequests(changed); 4726 } else { 4727 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4728 rematchNetworkAndRequests(nai); 4729 } 4730 } 4731 } 4732 4733 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4734 // Don't bother updating until we've graduated to validated at least once. 4735 if (!nai.validated) return; 4736 // For now only update icons for default connection. 4737 // TODO: Update WiFi and cellular icons separately. b/17237507 4738 if (!isDefaultNetwork(nai)) return; 4739 4740 int newInetCondition = valid ? 100 : 0; 4741 // Don't repeat publish. 4742 if (newInetCondition == mDefaultInetConditionPublished) return; 4743 4744 mDefaultInetConditionPublished = newInetCondition; 4745 sendInetConditionBroadcast(nai.networkInfo); 4746 } 4747 4748 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4749 NetworkInfo.State state = newInfo.getState(); 4750 NetworkInfo oldInfo = null; 4751 synchronized (networkAgent) { 4752 oldInfo = networkAgent.networkInfo; 4753 networkAgent.networkInfo = newInfo; 4754 } 4755 if (networkAgent.isVPN() && mLockdownTracker != null) { 4756 mLockdownTracker.onVpnStateChanged(newInfo); 4757 } 4758 4759 if (oldInfo != null && oldInfo.getState() == state) { 4760 if (VDBG) log("ignoring duplicate network state non-change"); 4761 return; 4762 } 4763 if (DBG) { 4764 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4765 (oldInfo == null ? "null" : oldInfo.getState()) + 4766 " to " + state); 4767 } 4768 4769 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4770 try { 4771 // This should never fail. Specifying an already in use NetID will cause failure. 4772 if (networkAgent.isVPN()) { 4773 mNetd.createVirtualNetwork(networkAgent.network.netId, 4774 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4775 (networkAgent.networkMisc == null || 4776 !networkAgent.networkMisc.allowBypass)); 4777 } else { 4778 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4779 } 4780 } catch (Exception e) { 4781 loge("Error creating network " + networkAgent.network.netId + ": " 4782 + e.getMessage()); 4783 return; 4784 } 4785 networkAgent.created = true; 4786 updateLinkProperties(networkAgent, null); 4787 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4788 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4789 if (networkAgent.isVPN()) { 4790 // Temporarily disable the default proxy (not global). 4791 synchronized (mProxyLock) { 4792 if (!mDefaultProxyDisabled) { 4793 mDefaultProxyDisabled = true; 4794 if (mGlobalProxy == null && mDefaultProxy != null) { 4795 sendProxyBroadcast(null); 4796 } 4797 } 4798 } 4799 // TODO: support proxy per network. 4800 } 4801 // Consider network even though it is not yet validated. 4802 // TODO: All the if-statement conditions can be removed now that validation only confers 4803 // a score increase. 4804 if (mNetworkForRequestId.get(mDefaultRequest.requestId) == null && 4805 networkAgent.isVPN() == false && 4806 mDefaultRequest.networkCapabilities.satisfiedByNetworkCapabilities( 4807 networkAgent.networkCapabilities)) { 4808 rematchNetworkAndRequests(networkAgent); 4809 } 4810 } else if (state == NetworkInfo.State.DISCONNECTED || 4811 state == NetworkInfo.State.SUSPENDED) { 4812 networkAgent.asyncChannel.disconnect(); 4813 if (networkAgent.isVPN()) { 4814 synchronized (mProxyLock) { 4815 if (mDefaultProxyDisabled) { 4816 mDefaultProxyDisabled = false; 4817 if (mGlobalProxy == null && mDefaultProxy != null) { 4818 sendProxyBroadcast(mDefaultProxy); 4819 } 4820 } 4821 } 4822 } 4823 } 4824 } 4825 4826 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4827 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4828 if (score < 0) { 4829 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4830 "). Bumping score to min of 0"); 4831 score = 0; 4832 } 4833 4834 final int oldScore = nai.getCurrentScore(); 4835 nai.setCurrentScore(score); 4836 4837 if (nai.created) rematchAllNetworksAndRequests(nai, oldScore); 4838 4839 for (int i = 0; i < nai.networkRequests.size(); i++) { 4840 NetworkRequest nr = nai.networkRequests.valueAt(i); 4841 // Don't send listening requests to factories. b/17393458 4842 if (mNetworkRequests.get(nr).isRequest == false) continue; 4843 sendUpdatedScoreToFactories(nr, score); 4844 } 4845 } 4846 4847 // notify only this one new request of the current state 4848 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4849 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4850 // TODO - read state from monitor to decide what to send. 4851// if (nai.networkMonitor.isLingering()) { 4852// notifyType = NetworkCallbacks.LOSING; 4853// } else if (nai.networkMonitor.isEvaluating()) { 4854// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4855// } 4856 callCallbackForRequest(nri, nai, notifyType); 4857 } 4858 4859 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4860 // The NetworkInfo we actually send out has no bearing on the real 4861 // state of affairs. For example, if the default connection is mobile, 4862 // and a request for HIPRI has just gone away, we need to pretend that 4863 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4864 // the state to DISCONNECTED, even though the network is of type MOBILE 4865 // and is still connected. 4866 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4867 info.setType(type); 4868 if (connected) { 4869 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4870 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4871 } else { 4872 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4873 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4874 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4875 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4876 if (info.isFailover()) { 4877 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4878 nai.networkInfo.setFailover(false); 4879 } 4880 if (info.getReason() != null) { 4881 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4882 } 4883 if (info.getExtraInfo() != null) { 4884 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4885 } 4886 NetworkAgentInfo newDefaultAgent = null; 4887 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4888 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4889 if (newDefaultAgent != null) { 4890 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4891 newDefaultAgent.networkInfo); 4892 } else { 4893 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4894 } 4895 } 4896 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4897 mDefaultInetConditionPublished); 4898 final Intent immediateIntent = new Intent(intent); 4899 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4900 sendStickyBroadcast(immediateIntent); 4901 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4902 if (newDefaultAgent != null) { 4903 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4904 getConnectivityChangeDelay()); 4905 } 4906 } 4907 } 4908 4909 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4910 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4911 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4912 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4913 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4914 if (VDBG) log(" sending notification for " + nr); 4915 callCallbackForRequest(nri, networkAgent, notifyType); 4916 } 4917 } 4918 4919 private String notifyTypeToName(int notifyType) { 4920 switch (notifyType) { 4921 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4922 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4923 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4924 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4925 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4926 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4927 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4928 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4929 } 4930 return "UNKNOWN"; 4931 } 4932 4933 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 4934 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4935 if (nai != null) { 4936 synchronized (nai) { 4937 return new LinkProperties(nai.linkProperties); 4938 } 4939 } 4940 return new LinkProperties(); 4941 } 4942 4943 private NetworkInfo getNetworkInfoForType(int networkType) { 4944 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 4945 return null; 4946 4947 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4948 if (nai != null) { 4949 NetworkInfo result = new NetworkInfo(nai.networkInfo); 4950 result.setType(networkType); 4951 return result; 4952 } else { 4953 NetworkInfo result = new NetworkInfo( 4954 networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), ""); 4955 result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 4956 return result; 4957 } 4958 } 4959 4960 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 4961 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4962 if (nai != null) { 4963 synchronized (nai) { 4964 return new NetworkCapabilities(nai.networkCapabilities); 4965 } 4966 } 4967 return new NetworkCapabilities(); 4968 } 4969 4970 @Override 4971 public boolean addVpnAddress(String address, int prefixLength) { 4972 throwIfLockdownEnabled(); 4973 int user = UserHandle.getUserId(Binder.getCallingUid()); 4974 synchronized (mVpns) { 4975 return mVpns.get(user).addAddress(address, prefixLength); 4976 } 4977 } 4978 4979 @Override 4980 public boolean removeVpnAddress(String address, int prefixLength) { 4981 throwIfLockdownEnabled(); 4982 int user = UserHandle.getUserId(Binder.getCallingUid()); 4983 synchronized (mVpns) { 4984 return mVpns.get(user).removeAddress(address, prefixLength); 4985 } 4986 } 4987} 4988