ConnectivityService.java revision 49f63fbed4cd84f5da182c85e8b999037dc64f3b
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_MOBILE; 26import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 28import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 29import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 31import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 33import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_WIFI; 36import static android.net.ConnectivityManager.TYPE_WIMAX; 37import static android.net.ConnectivityManager.TYPE_PROXY; 38import static android.net.ConnectivityManager.getNetworkTypeName; 39import static android.net.ConnectivityManager.isNetworkTypeValid; 40import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 41import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 42 43import android.app.AlarmManager; 44import android.app.Notification; 45import android.app.NotificationManager; 46import android.app.PendingIntent; 47import android.content.ActivityNotFoundException; 48import android.content.BroadcastReceiver; 49import android.content.ContentResolver; 50import android.content.Context; 51import android.content.ContextWrapper; 52import android.content.Intent; 53import android.content.IntentFilter; 54import android.content.pm.PackageManager; 55import android.content.res.Configuration; 56import android.content.res.Resources; 57import android.database.ContentObserver; 58import android.net.ConnectivityManager; 59import android.net.IConnectivityManager; 60import android.net.INetworkManagementEventObserver; 61import android.net.INetworkPolicyListener; 62import android.net.INetworkPolicyManager; 63import android.net.INetworkStatsService; 64import android.net.LinkAddress; 65import android.net.LinkProperties; 66import android.net.LinkProperties.CompareResult; 67import android.net.LinkQualityInfo; 68import android.net.MobileDataStateTracker; 69import android.net.Network; 70import android.net.NetworkAgent; 71import android.net.NetworkCapabilities; 72import android.net.NetworkConfig; 73import android.net.NetworkInfo; 74import android.net.NetworkInfo.DetailedState; 75import android.net.NetworkFactory; 76import android.net.NetworkMisc; 77import android.net.NetworkQuotaInfo; 78import android.net.NetworkRequest; 79import android.net.NetworkState; 80import android.net.NetworkStateTracker; 81import android.net.NetworkUtils; 82import android.net.Proxy; 83import android.net.ProxyDataTracker; 84import android.net.ProxyInfo; 85import android.net.RouteInfo; 86import android.net.SamplingDataTracker; 87import android.net.UidRange; 88import android.net.Uri; 89import android.net.wimax.WimaxManagerConstants; 90import android.os.AsyncTask; 91import android.os.Binder; 92import android.os.Build; 93import android.os.FileUtils; 94import android.os.Handler; 95import android.os.HandlerThread; 96import android.os.IBinder; 97import android.os.INetworkManagementService; 98import android.os.Looper; 99import android.os.Message; 100import android.os.Messenger; 101import android.os.ParcelFileDescriptor; 102import android.os.PowerManager; 103import android.os.Process; 104import android.os.RemoteException; 105import android.os.ServiceManager; 106import android.os.SystemClock; 107import android.os.SystemProperties; 108import android.os.UserHandle; 109import android.os.UserManager; 110import android.provider.Settings; 111import android.security.Credentials; 112import android.security.KeyStore; 113import android.telephony.TelephonyManager; 114import android.text.TextUtils; 115import android.util.Slog; 116import android.util.SparseArray; 117import android.util.SparseIntArray; 118import android.util.Xml; 119 120import com.android.internal.R; 121import com.android.internal.annotations.GuardedBy; 122import com.android.internal.app.IBatteryStats; 123import com.android.internal.net.LegacyVpnInfo; 124import com.android.internal.net.NetworkStatsFactory; 125import com.android.internal.net.VpnConfig; 126import com.android.internal.net.VpnProfile; 127import com.android.internal.telephony.DctConstants; 128import com.android.internal.telephony.Phone; 129import com.android.internal.telephony.PhoneConstants; 130import com.android.internal.telephony.TelephonyIntents; 131import com.android.internal.util.AsyncChannel; 132import com.android.internal.util.IndentingPrintWriter; 133import com.android.internal.util.XmlUtils; 134import com.android.server.am.BatteryStatsService; 135import com.android.server.connectivity.DataConnectionStats; 136import com.android.server.connectivity.Nat464Xlat; 137import com.android.server.connectivity.NetworkAgentInfo; 138import com.android.server.connectivity.NetworkMonitor; 139import com.android.server.connectivity.PacManager; 140import com.android.server.connectivity.Tethering; 141import com.android.server.connectivity.Vpn; 142import com.android.server.net.BaseNetworkObserver; 143import com.android.server.net.LockdownVpnTracker; 144import com.google.android.collect.Lists; 145import com.google.android.collect.Sets; 146 147import dalvik.system.DexClassLoader; 148 149import org.xmlpull.v1.XmlPullParser; 150import org.xmlpull.v1.XmlPullParserException; 151 152import java.io.File; 153import java.io.FileDescriptor; 154import java.io.FileNotFoundException; 155import java.io.FileReader; 156import java.io.IOException; 157import java.io.PrintWriter; 158import java.lang.reflect.Constructor; 159import java.net.HttpURLConnection; 160import java.net.Inet4Address; 161import java.net.Inet6Address; 162import java.net.InetAddress; 163import java.net.URL; 164import java.net.UnknownHostException; 165import java.util.ArrayList; 166import java.util.Arrays; 167import java.util.Collection; 168import java.util.GregorianCalendar; 169import java.util.HashMap; 170import java.util.HashSet; 171import java.util.List; 172import java.util.Map; 173import java.util.Random; 174import java.util.concurrent.atomic.AtomicBoolean; 175import java.util.concurrent.atomic.AtomicInteger; 176 177import javax.net.ssl.HostnameVerifier; 178import javax.net.ssl.HttpsURLConnection; 179import javax.net.ssl.SSLSession; 180 181/** 182 * @hide 183 */ 184public class ConnectivityService extends IConnectivityManager.Stub { 185 private static final String TAG = "ConnectivityService"; 186 187 private static final boolean DBG = true; 188 private static final boolean VDBG = false; 189 190 // network sampling debugging 191 private static final boolean SAMPLE_DBG = false; 192 193 private static final boolean LOGD_RULES = false; 194 195 // TODO: create better separation between radio types and network types 196 197 // how long to wait before switching back to a radio's default network 198 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 199 // system property that can override the above value 200 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 201 "android.telephony.apn-restore"; 202 203 // Default value if FAIL_FAST_TIME_MS is not set 204 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 205 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 206 private static final String FAIL_FAST_TIME_MS = 207 "persist.radio.fail_fast_time_ms"; 208 209 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 210 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 211 212 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 213 214 private PendingIntent mSampleIntervalElapsedIntent; 215 216 // Set network sampling interval at 12 minutes, this way, even if the timers get 217 // aggregated, it will fire at around 15 minutes, which should allow us to 218 // aggregate this timer with other timers (specially the socket keep alive timers) 219 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 220 221 // start network sampling a minute after booting ... 222 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 223 224 AlarmManager mAlarmManager; 225 226 private Tethering mTethering; 227 228 private KeyStore mKeyStore; 229 230 @GuardedBy("mVpns") 231 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 232 233 private boolean mLockdownEnabled; 234 private LockdownVpnTracker mLockdownTracker; 235 236 private Nat464Xlat mClat; 237 238 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 239 private Object mRulesLock = new Object(); 240 /** Currently active network rules by UID. */ 241 private SparseIntArray mUidRules = new SparseIntArray(); 242 /** Set of ifaces that are costly. */ 243 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 244 245 /** 246 * Sometimes we want to refer to the individual network state 247 * trackers separately, and sometimes we just want to treat them 248 * abstractly. 249 */ 250 private NetworkStateTracker mNetTrackers[]; 251 252 private Context mContext; 253 private int mNetworkPreference; 254 private int mActiveDefaultNetwork = TYPE_NONE; 255 // 0 is full bad, 100 is full good 256 private int mDefaultInetConditionPublished = 0; 257 258 private Object mDnsLock = new Object(); 259 private int mNumDnsEntries; 260 261 private boolean mTestMode; 262 private static ConnectivityService sServiceInstance; 263 264 private INetworkManagementService mNetd; 265 private INetworkPolicyManager mPolicyManager; 266 267 private String mCurrentTcpBufferSizes; 268 269 private static final int ENABLED = 1; 270 private static final int DISABLED = 0; 271 272 /** 273 * used internally to change our mobile data enabled flag 274 */ 275 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 276 277 /** 278 * used internally to clear a wakelock when transitioning 279 * from one net to another. Clear happens when we get a new 280 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 281 * after a timeout if no network is found (typically 1 min). 282 */ 283 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 284 285 /** 286 * used internally to reload global proxy settings 287 */ 288 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 289 290 /** 291 * used internally to set external dependency met/unmet 292 * arg1 = ENABLED (met) or DISABLED (unmet) 293 * arg2 = NetworkType 294 */ 295 private static final int EVENT_SET_DEPENDENCY_MET = 10; 296 297 /** 298 * used internally to send a sticky broadcast delayed. 299 */ 300 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 301 302 /** 303 * Used internally to 304 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 305 */ 306 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 307 308 /** 309 * Used internally to disable fail fast of mobile data 310 */ 311 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 312 313 /** 314 * used internally to indicate that data sampling interval is up 315 */ 316 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 317 318 /** 319 * PAC manager has received new port. 320 */ 321 private static final int EVENT_PROXY_HAS_CHANGED = 16; 322 323 /** 324 * used internally when registering NetworkFactories 325 * obj = NetworkFactoryInfo 326 */ 327 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 328 329 /** 330 * used internally when registering NetworkAgents 331 * obj = Messenger 332 */ 333 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 334 335 /** 336 * used to add a network request 337 * includes a NetworkRequestInfo 338 */ 339 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 340 341 /** 342 * indicates a timeout period is over - check if we had a network yet or not 343 * and if not, call the timeout calback (but leave the request live until they 344 * cancel it. 345 * includes a NetworkRequestInfo 346 */ 347 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 348 349 /** 350 * used to add a network listener - no request 351 * includes a NetworkRequestInfo 352 */ 353 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 354 355 /** 356 * used to remove a network request, either a listener or a real request 357 * arg1 = UID of caller 358 * obj = NetworkRequest 359 */ 360 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 361 362 /** 363 * used internally when registering NetworkFactories 364 * obj = Messenger 365 */ 366 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 367 368 /** 369 * used internally to expire a wakelock when transitioning 370 * from one net to another. Expire happens when we fail to find 371 * a new network (typically after 1 minute) - 372 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 373 * a replacement network. 374 */ 375 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 376 377 /** 378 * Used internally to indicate the system is ready. 379 */ 380 private static final int EVENT_SYSTEM_READY = 25; 381 382 383 /** Handler used for internal events. */ 384 final private InternalHandler mHandler; 385 /** Handler used for incoming {@link NetworkStateTracker} events. */ 386 final private NetworkStateTrackerHandler mTrackerHandler; 387 388 private boolean mSystemReady; 389 private Intent mInitialBroadcast; 390 391 private PowerManager.WakeLock mNetTransitionWakeLock; 392 private String mNetTransitionWakeLockCausedBy = ""; 393 private int mNetTransitionWakeLockSerialNumber; 394 private int mNetTransitionWakeLockTimeout; 395 396 private InetAddress mDefaultDns; 397 398 // used in DBG mode to track inet condition reports 399 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 400 private ArrayList mInetLog; 401 402 // track the current default http proxy - tell the world if we get a new one (real change) 403 private ProxyInfo mDefaultProxy = null; 404 private Object mProxyLock = new Object(); 405 private boolean mDefaultProxyDisabled = false; 406 407 // track the global proxy. 408 private ProxyInfo mGlobalProxy = null; 409 410 private PacManager mPacManager = null; 411 412 private SettingsObserver mSettingsObserver; 413 414 private UserManager mUserManager; 415 416 NetworkConfig[] mNetConfigs; 417 int mNetworksDefined; 418 419 // the set of network types that can only be enabled by system/sig apps 420 List mProtectedNetworks; 421 422 private DataConnectionStats mDataConnectionStats; 423 424 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 425 426 TelephonyManager mTelephonyManager; 427 428 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 429 private final static int MIN_NET_ID = 100; // some reserved marks 430 private final static int MAX_NET_ID = 65535; 431 private int mNextNetId = MIN_NET_ID; 432 433 // sequence number of NetworkRequests 434 private int mNextNetworkRequestId = 1; 435 436 /** 437 * Implements support for the legacy "one network per network type" model. 438 * 439 * We used to have a static array of NetworkStateTrackers, one for each 440 * network type, but that doesn't work any more now that we can have, 441 * for example, more that one wifi network. This class stores all the 442 * NetworkAgentInfo objects that support a given type, but the legacy 443 * API will only see the first one. 444 * 445 * It serves two main purposes: 446 * 447 * 1. Provide information about "the network for a given type" (since this 448 * API only supports one). 449 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 450 * the first network for a given type changes, or if the default network 451 * changes. 452 */ 453 private class LegacyTypeTracker { 454 455 private static final boolean DBG = true; 456 private static final boolean VDBG = false; 457 private static final String TAG = "CSLegacyTypeTracker"; 458 459 /** 460 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 461 * Each list holds references to all NetworkAgentInfos that are used to 462 * satisfy requests for that network type. 463 * 464 * This array is built out at startup such that an unsupported network 465 * doesn't get an ArrayList instance, making this a tristate: 466 * unsupported, supported but not active and active. 467 * 468 * The actual lists are populated when we scan the network types that 469 * are supported on this device. 470 */ 471 private ArrayList<NetworkAgentInfo> mTypeLists[]; 472 473 public LegacyTypeTracker() { 474 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 475 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 476 } 477 478 public void addSupportedType(int type) { 479 if (mTypeLists[type] != null) { 480 throw new IllegalStateException( 481 "legacy list for type " + type + "already initialized"); 482 } 483 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 484 } 485 486 public boolean isTypeSupported(int type) { 487 return isNetworkTypeValid(type) && mTypeLists[type] != null; 488 } 489 490 public NetworkAgentInfo getNetworkForType(int type) { 491 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 492 return mTypeLists[type].get(0); 493 } else { 494 return null; 495 } 496 } 497 498 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 499 if (DBG) { 500 log("Sending " + (connected ? "connected" : "disconnected") + 501 " broadcast for type " + type + " " + nai.name() + 502 " isDefaultNetwork=" + isDefaultNetwork(nai)); 503 } 504 } 505 506 /** Adds the given network to the specified legacy type list. */ 507 public void add(int type, NetworkAgentInfo nai) { 508 if (!isTypeSupported(type)) { 509 return; // Invalid network type. 510 } 511 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 512 513 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 514 if (list.contains(nai)) { 515 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 516 return; 517 } 518 519 if (list.isEmpty() || isDefaultNetwork(nai)) { 520 maybeLogBroadcast(nai, true, type); 521 sendLegacyNetworkBroadcast(nai, true, type); 522 } 523 list.add(nai); 524 } 525 526 /** Removes the given network from the specified legacy type list. */ 527 public void remove(int type, NetworkAgentInfo nai) { 528 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 529 if (list == null || list.isEmpty()) { 530 return; 531 } 532 533 boolean wasFirstNetwork = list.get(0).equals(nai); 534 535 if (!list.remove(nai)) { 536 return; 537 } 538 539 if (wasFirstNetwork || isDefaultNetwork(nai)) { 540 maybeLogBroadcast(nai, false, type); 541 sendLegacyNetworkBroadcast(nai, false, type); 542 } 543 544 if (!list.isEmpty() && wasFirstNetwork) { 545 if (DBG) log("Other network available for type " + type + 546 ", sending connected broadcast"); 547 maybeLogBroadcast(list.get(0), false, type); 548 sendLegacyNetworkBroadcast(list.get(0), false, type); 549 } 550 } 551 552 /** Removes the given network from all legacy type lists. */ 553 public void remove(NetworkAgentInfo nai) { 554 if (VDBG) log("Removing agent " + nai); 555 for (int type = 0; type < mTypeLists.length; type++) { 556 remove(type, nai); 557 } 558 } 559 560 private String naiToString(NetworkAgentInfo nai) { 561 String name = (nai != null) ? nai.name() : "null"; 562 String state = (nai.networkInfo != null) ? 563 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 564 "???/???"; 565 return name + " " + state; 566 } 567 568 public void dump(IndentingPrintWriter pw) { 569 for (int type = 0; type < mTypeLists.length; type++) { 570 if (mTypeLists[type] == null) continue; 571 pw.print(type + " "); 572 pw.increaseIndent(); 573 if (mTypeLists[type].size() == 0) pw.println("none"); 574 for (NetworkAgentInfo nai : mTypeLists[type]) { 575 pw.println(naiToString(nai)); 576 } 577 pw.decreaseIndent(); 578 } 579 } 580 581 // This class needs its own log method because it has a different TAG. 582 private void log(String s) { 583 Slog.d(TAG, s); 584 } 585 586 } 587 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 588 589 public ConnectivityService(Context context, INetworkManagementService netManager, 590 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 591 if (DBG) log("ConnectivityService starting up"); 592 593 NetworkCapabilities netCap = new NetworkCapabilities(); 594 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 595 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 596 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 597 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 598 NetworkRequestInfo.REQUEST); 599 mNetworkRequests.put(mDefaultRequest, nri); 600 601 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 602 handlerThread.start(); 603 mHandler = new InternalHandler(handlerThread.getLooper()); 604 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 605 606 // setup our unique device name 607 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 608 String id = Settings.Secure.getString(context.getContentResolver(), 609 Settings.Secure.ANDROID_ID); 610 if (id != null && id.length() > 0) { 611 String name = new String("android-").concat(id); 612 SystemProperties.set("net.hostname", name); 613 } 614 } 615 616 // read our default dns server ip 617 String dns = Settings.Global.getString(context.getContentResolver(), 618 Settings.Global.DEFAULT_DNS_SERVER); 619 if (dns == null || dns.length() == 0) { 620 dns = context.getResources().getString( 621 com.android.internal.R.string.config_default_dns_server); 622 } 623 try { 624 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 625 } catch (IllegalArgumentException e) { 626 loge("Error setting defaultDns using " + dns); 627 } 628 629 mContext = checkNotNull(context, "missing Context"); 630 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 631 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 632 mKeyStore = KeyStore.getInstance(); 633 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 634 635 try { 636 mPolicyManager.registerListener(mPolicyListener); 637 } catch (RemoteException e) { 638 // ouch, no rules updates means some processes may never get network 639 loge("unable to register INetworkPolicyListener" + e.toString()); 640 } 641 642 final PowerManager powerManager = (PowerManager) context.getSystemService( 643 Context.POWER_SERVICE); 644 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 645 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 646 com.android.internal.R.integer.config_networkTransitionTimeout); 647 648 mNetTrackers = new NetworkStateTracker[ 649 ConnectivityManager.MAX_NETWORK_TYPE+1]; 650 651 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 652 653 // TODO: What is the "correct" way to do determine if this is a wifi only device? 654 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 655 log("wifiOnly=" + wifiOnly); 656 String[] naStrings = context.getResources().getStringArray( 657 com.android.internal.R.array.networkAttributes); 658 for (String naString : naStrings) { 659 try { 660 NetworkConfig n = new NetworkConfig(naString); 661 if (VDBG) log("naString=" + naString + " config=" + n); 662 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 663 loge("Error in networkAttributes - ignoring attempt to define type " + 664 n.type); 665 continue; 666 } 667 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 668 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 669 n.type); 670 continue; 671 } 672 if (mNetConfigs[n.type] != null) { 673 loge("Error in networkAttributes - ignoring attempt to redefine type " + 674 n.type); 675 continue; 676 } 677 mLegacyTypeTracker.addSupportedType(n.type); 678 679 mNetConfigs[n.type] = n; 680 mNetworksDefined++; 681 } catch(Exception e) { 682 // ignore it - leave the entry null 683 } 684 } 685 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 686 687 mProtectedNetworks = new ArrayList<Integer>(); 688 int[] protectedNetworks = context.getResources().getIntArray( 689 com.android.internal.R.array.config_protectedNetworks); 690 for (int p : protectedNetworks) { 691 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 692 mProtectedNetworks.add(p); 693 } else { 694 if (DBG) loge("Ignoring protectedNetwork " + p); 695 } 696 } 697 698 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 699 && SystemProperties.get("ro.build.type").equals("eng"); 700 701 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 702 703 //set up the listener for user state for creating user VPNs 704 IntentFilter intentFilter = new IntentFilter(); 705 intentFilter.addAction(Intent.ACTION_USER_STARTING); 706 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 707 mContext.registerReceiverAsUser( 708 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 709 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 710 711 try { 712 mNetd.registerObserver(mTethering); 713 mNetd.registerObserver(mDataActivityObserver); 714 mNetd.registerObserver(mClat); 715 } catch (RemoteException e) { 716 loge("Error registering observer :" + e); 717 } 718 719 if (DBG) { 720 mInetLog = new ArrayList(); 721 } 722 723 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 724 mSettingsObserver.observe(mContext); 725 726 mDataConnectionStats = new DataConnectionStats(mContext); 727 mDataConnectionStats.startMonitoring(); 728 729 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 730 731 IntentFilter filter = new IntentFilter(); 732 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 733 mContext.registerReceiver( 734 new BroadcastReceiver() { 735 @Override 736 public void onReceive(Context context, Intent intent) { 737 String action = intent.getAction(); 738 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 739 mHandler.sendMessage(mHandler.obtainMessage 740 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 741 } 742 } 743 }, 744 new IntentFilter(filter)); 745 746 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 747 748 filter = new IntentFilter(); 749 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 750 mContext.registerReceiver(mProvisioningReceiver, filter); 751 752 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 753 } 754 755 private synchronized int nextNetworkRequestId() { 756 return mNextNetworkRequestId++; 757 } 758 759 private void assignNextNetId(NetworkAgentInfo nai) { 760 synchronized (mNetworkForNetId) { 761 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 762 int netId = mNextNetId; 763 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 764 // Make sure NetID unused. http://b/16815182 765 if (mNetworkForNetId.get(netId) == null) { 766 nai.network = new Network(netId); 767 mNetworkForNetId.put(netId, nai); 768 return; 769 } 770 } 771 } 772 throw new IllegalStateException("No free netIds"); 773 } 774 775 private int getConnectivityChangeDelay() { 776 final ContentResolver cr = mContext.getContentResolver(); 777 778 /** Check system properties for the default value then use secure settings value, if any. */ 779 int defaultDelay = SystemProperties.getInt( 780 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 781 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 782 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 783 defaultDelay); 784 } 785 786 private boolean teardown(NetworkStateTracker netTracker) { 787 if (netTracker.teardown()) { 788 netTracker.setTeardownRequested(true); 789 return true; 790 } else { 791 return false; 792 } 793 } 794 795 /** 796 * Check if UID should be blocked from using the network represented by the given networkType. 797 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 798 */ 799 private boolean isNetworkBlocked(int networkType, int uid) { 800 return isNetworkWithLinkPropertiesBlocked(getLinkPropertiesForType(networkType), uid); 801 } 802 803 /** 804 * Check if UID should be blocked from using the network represented by the given 805 * NetworkAgentInfo. 806 */ 807 private boolean isNetworkBlocked(NetworkAgentInfo nai, int uid) { 808 return isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid); 809 } 810 811 /** 812 * Check if UID should be blocked from using the network with the given LinkProperties. 813 */ 814 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 815 final boolean networkCostly; 816 final int uidRules; 817 818 final String iface = (lp == null ? "" : lp.getInterfaceName()); 819 synchronized (mRulesLock) { 820 networkCostly = mMeteredIfaces.contains(iface); 821 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 822 } 823 824 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 825 return true; 826 } 827 828 // no restrictive rules; network is visible 829 return false; 830 } 831 832 /** 833 * Return a filtered {@link NetworkInfo}, potentially marked 834 * {@link DetailedState#BLOCKED} based on 835 * {@link #isNetworkBlocked}. 836 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 837 */ 838 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 839 NetworkInfo info = getNetworkInfoForType(networkType); 840 return getFilteredNetworkInfo(info, networkType, uid); 841 } 842 843 /* 844 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 845 */ 846 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) { 847 if (isNetworkBlocked(networkType, uid)) { 848 // network is blocked; clone and override state 849 info = new NetworkInfo(info); 850 info.setDetailedState(DetailedState.BLOCKED, null, null); 851 if (VDBG) log("returning Blocked NetworkInfo"); 852 } 853 if (mLockdownTracker != null) { 854 info = mLockdownTracker.augmentNetworkInfo(info); 855 if (VDBG) log("returning Locked NetworkInfo"); 856 } 857 return info; 858 } 859 860 private NetworkInfo getFilteredNetworkInfo(NetworkAgentInfo nai, int uid) { 861 NetworkInfo info = nai.networkInfo; 862 if (isNetworkBlocked(nai, uid)) { 863 // network is blocked; clone and override state 864 info = new NetworkInfo(info); 865 info.setDetailedState(DetailedState.BLOCKED, null, null); 866 if (DBG) log("returning Blocked NetworkInfo"); 867 } 868 if (mLockdownTracker != null) { 869 info = mLockdownTracker.augmentNetworkInfo(info); 870 if (DBG) log("returning Locked NetworkInfo"); 871 } 872 return info; 873 } 874 875 /** 876 * Return NetworkInfo for the active (i.e., connected) network interface. 877 * It is assumed that at most one network is active at a time. If more 878 * than one is active, it is indeterminate which will be returned. 879 * @return the info for the active network, or {@code null} if none is 880 * active 881 */ 882 @Override 883 public NetworkInfo getActiveNetworkInfo() { 884 enforceAccessPermission(); 885 final int uid = Binder.getCallingUid(); 886 return getNetworkInfo(mActiveDefaultNetwork, uid); 887 } 888 889 /** 890 * Find the first Provisioning network. 891 * 892 * @return NetworkInfo or null if none. 893 */ 894 private NetworkInfo getProvisioningNetworkInfo() { 895 enforceAccessPermission(); 896 897 // Find the first Provisioning Network 898 NetworkInfo provNi = null; 899 for (NetworkInfo ni : getAllNetworkInfo()) { 900 if (ni.isConnectedToProvisioningNetwork()) { 901 provNi = ni; 902 break; 903 } 904 } 905 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 906 return provNi; 907 } 908 909 /** 910 * Find the first Provisioning network or the ActiveDefaultNetwork 911 * if there is no Provisioning network 912 * 913 * @return NetworkInfo or null if none. 914 */ 915 @Override 916 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 917 enforceAccessPermission(); 918 919 NetworkInfo provNi = getProvisioningNetworkInfo(); 920 if (provNi == null) { 921 final int uid = Binder.getCallingUid(); 922 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 923 } 924 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 925 return provNi; 926 } 927 928 public NetworkInfo getActiveNetworkInfoUnfiltered() { 929 enforceAccessPermission(); 930 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 931 return getNetworkInfoForType(mActiveDefaultNetwork); 932 } 933 return null; 934 } 935 936 @Override 937 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 938 enforceConnectivityInternalPermission(); 939 return getNetworkInfo(mActiveDefaultNetwork, uid); 940 } 941 942 @Override 943 public NetworkInfo getNetworkInfo(int networkType) { 944 enforceAccessPermission(); 945 final int uid = Binder.getCallingUid(); 946 return getNetworkInfo(networkType, uid); 947 } 948 949 private NetworkInfo getNetworkInfo(int networkType, int uid) { 950 NetworkInfo info = null; 951 if (isNetworkTypeValid(networkType)) { 952 if (getNetworkInfoForType(networkType) != null) { 953 info = getFilteredNetworkInfo(networkType, uid); 954 } 955 } 956 return info; 957 } 958 959 @Override 960 public NetworkInfo getNetworkInfoForNetwork(Network network) { 961 enforceAccessPermission(); 962 if (network == null) return null; 963 964 final int uid = Binder.getCallingUid(); 965 NetworkAgentInfo nai = null; 966 synchronized (mNetworkForNetId) { 967 nai = mNetworkForNetId.get(network.netId); 968 } 969 if (nai == null) return null; 970 synchronized (nai) { 971 if (nai.networkInfo == null) return null; 972 973 return getFilteredNetworkInfo(nai, uid); 974 } 975 } 976 977 @Override 978 public NetworkInfo[] getAllNetworkInfo() { 979 enforceAccessPermission(); 980 final int uid = Binder.getCallingUid(); 981 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 982 synchronized (mRulesLock) { 983 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 984 networkType++) { 985 if (getNetworkInfoForType(networkType) != null) { 986 result.add(getFilteredNetworkInfo(networkType, uid)); 987 } 988 } 989 } 990 return result.toArray(new NetworkInfo[result.size()]); 991 } 992 993 @Override 994 public Network getNetworkForType(int networkType) { 995 enforceAccessPermission(); 996 final int uid = Binder.getCallingUid(); 997 if (isNetworkBlocked(networkType, uid)) { 998 return null; 999 } 1000 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1001 return (nai == null) ? null : nai.network; 1002 } 1003 1004 @Override 1005 public Network[] getAllNetworks() { 1006 enforceAccessPermission(); 1007 final ArrayList<Network> result = new ArrayList(); 1008 synchronized (mNetworkForNetId) { 1009 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1010 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1011 } 1012 } 1013 return result.toArray(new Network[result.size()]); 1014 } 1015 1016 @Override 1017 public boolean isNetworkSupported(int networkType) { 1018 enforceAccessPermission(); 1019 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1020 } 1021 1022 /** 1023 * Return LinkProperties for the active (i.e., connected) default 1024 * network interface. It is assumed that at most one default network 1025 * is active at a time. If more than one is active, it is indeterminate 1026 * which will be returned. 1027 * @return the ip properties for the active network, or {@code null} if 1028 * none is active 1029 */ 1030 @Override 1031 public LinkProperties getActiveLinkProperties() { 1032 return getLinkPropertiesForType(mActiveDefaultNetwork); 1033 } 1034 1035 @Override 1036 public LinkProperties getLinkPropertiesForType(int networkType) { 1037 enforceAccessPermission(); 1038 if (isNetworkTypeValid(networkType)) { 1039 return getLinkPropertiesForTypeInternal(networkType); 1040 } 1041 return null; 1042 } 1043 1044 // TODO - this should be ALL networks 1045 @Override 1046 public LinkProperties getLinkProperties(Network network) { 1047 enforceAccessPermission(); 1048 NetworkAgentInfo nai = null; 1049 synchronized (mNetworkForNetId) { 1050 nai = mNetworkForNetId.get(network.netId); 1051 } 1052 1053 if (nai != null) { 1054 synchronized (nai) { 1055 return new LinkProperties(nai.linkProperties); 1056 } 1057 } 1058 return null; 1059 } 1060 1061 @Override 1062 public NetworkCapabilities getNetworkCapabilities(Network network) { 1063 enforceAccessPermission(); 1064 NetworkAgentInfo nai = null; 1065 synchronized (mNetworkForNetId) { 1066 nai = mNetworkForNetId.get(network.netId); 1067 } 1068 if (nai != null) { 1069 synchronized (nai) { 1070 return new NetworkCapabilities(nai.networkCapabilities); 1071 } 1072 } 1073 return null; 1074 } 1075 1076 @Override 1077 public NetworkState[] getAllNetworkState() { 1078 enforceAccessPermission(); 1079 final int uid = Binder.getCallingUid(); 1080 final ArrayList<NetworkState> result = Lists.newArrayList(); 1081 synchronized (mRulesLock) { 1082 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1083 networkType++) { 1084 if (getNetworkInfoForType(networkType) != null) { 1085 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1086 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1087 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1088 result.add(new NetworkState(info, lp, netcap)); 1089 } 1090 } 1091 } 1092 return result.toArray(new NetworkState[result.size()]); 1093 } 1094 1095 private NetworkState getNetworkStateUnchecked(int networkType) { 1096 if (isNetworkTypeValid(networkType)) { 1097 NetworkInfo info = getNetworkInfoForType(networkType); 1098 if (info != null) { 1099 return new NetworkState(info, 1100 getLinkPropertiesForTypeInternal(networkType), 1101 getNetworkCapabilitiesForType(networkType)); 1102 } 1103 } 1104 return null; 1105 } 1106 1107 @Override 1108 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1109 enforceAccessPermission(); 1110 1111 final long token = Binder.clearCallingIdentity(); 1112 try { 1113 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1114 if (state != null) { 1115 try { 1116 return mPolicyManager.getNetworkQuotaInfo(state); 1117 } catch (RemoteException e) { 1118 } 1119 } 1120 return null; 1121 } finally { 1122 Binder.restoreCallingIdentity(token); 1123 } 1124 } 1125 1126 @Override 1127 public boolean isActiveNetworkMetered() { 1128 enforceAccessPermission(); 1129 final long token = Binder.clearCallingIdentity(); 1130 try { 1131 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1132 } finally { 1133 Binder.restoreCallingIdentity(token); 1134 } 1135 } 1136 1137 private boolean isNetworkMeteredUnchecked(int networkType) { 1138 final NetworkState state = getNetworkStateUnchecked(networkType); 1139 if (state != null) { 1140 try { 1141 return mPolicyManager.isNetworkMetered(state); 1142 } catch (RemoteException e) { 1143 } 1144 } 1145 return false; 1146 } 1147 1148 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1149 @Override 1150 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1151 int deviceType = Integer.parseInt(label); 1152 sendDataActivityBroadcast(deviceType, active, tsNanos); 1153 } 1154 }; 1155 1156 /** 1157 * Ensure that a network route exists to deliver traffic to the specified 1158 * host via the specified network interface. 1159 * @param networkType the type of the network over which traffic to the 1160 * specified host is to be routed 1161 * @param hostAddress the IP address of the host to which the route is 1162 * desired 1163 * @return {@code true} on success, {@code false} on failure 1164 */ 1165 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1166 enforceChangePermission(); 1167 if (mProtectedNetworks.contains(networkType)) { 1168 enforceConnectivityInternalPermission(); 1169 } 1170 1171 InetAddress addr; 1172 try { 1173 addr = InetAddress.getByAddress(hostAddress); 1174 } catch (UnknownHostException e) { 1175 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1176 return false; 1177 } 1178 1179 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1180 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1181 return false; 1182 } 1183 1184 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1185 if (nai == null) { 1186 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1187 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1188 } else { 1189 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1190 } 1191 return false; 1192 } 1193 1194 DetailedState netState; 1195 synchronized (nai) { 1196 netState = nai.networkInfo.getDetailedState(); 1197 } 1198 1199 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1200 if (VDBG) { 1201 log("requestRouteToHostAddress on down network " 1202 + "(" + networkType + ") - dropped" 1203 + " netState=" + netState); 1204 } 1205 return false; 1206 } 1207 1208 final int uid = Binder.getCallingUid(); 1209 final long token = Binder.clearCallingIdentity(); 1210 try { 1211 LinkProperties lp; 1212 int netId; 1213 synchronized (nai) { 1214 lp = nai.linkProperties; 1215 netId = nai.network.netId; 1216 } 1217 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1218 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1219 return ok; 1220 } finally { 1221 Binder.restoreCallingIdentity(token); 1222 } 1223 } 1224 1225 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1226 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1227 if (bestRoute == null) { 1228 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1229 } else { 1230 String iface = bestRoute.getInterface(); 1231 if (bestRoute.getGateway().equals(addr)) { 1232 // if there is no better route, add the implied hostroute for our gateway 1233 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1234 } else { 1235 // if we will connect to this through another route, add a direct route 1236 // to it's gateway 1237 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1238 } 1239 } 1240 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1241 try { 1242 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1243 } catch (Exception e) { 1244 // never crash - catch them all 1245 if (DBG) loge("Exception trying to add a route: " + e); 1246 return false; 1247 } 1248 return true; 1249 } 1250 1251 public void setDataDependency(int networkType, boolean met) { 1252 enforceConnectivityInternalPermission(); 1253 1254 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1255 (met ? ENABLED : DISABLED), networkType)); 1256 } 1257 1258 private void handleSetDependencyMet(int networkType, boolean met) { 1259 if (mNetTrackers[networkType] != null) { 1260 if (DBG) { 1261 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1262 } 1263 mNetTrackers[networkType].setDependencyMet(met); 1264 } 1265 } 1266 1267 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1268 @Override 1269 public void onUidRulesChanged(int uid, int uidRules) { 1270 // caller is NPMS, since we only register with them 1271 if (LOGD_RULES) { 1272 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1273 } 1274 1275 synchronized (mRulesLock) { 1276 // skip update when we've already applied rules 1277 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1278 if (oldRules == uidRules) return; 1279 1280 mUidRules.put(uid, uidRules); 1281 } 1282 1283 // TODO: notify UID when it has requested targeted updates 1284 } 1285 1286 @Override 1287 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1288 // caller is NPMS, since we only register with them 1289 if (LOGD_RULES) { 1290 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1291 } 1292 1293 synchronized (mRulesLock) { 1294 mMeteredIfaces.clear(); 1295 for (String iface : meteredIfaces) { 1296 mMeteredIfaces.add(iface); 1297 } 1298 } 1299 } 1300 1301 @Override 1302 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1303 // caller is NPMS, since we only register with them 1304 if (LOGD_RULES) { 1305 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1306 } 1307 1308 // kick off connectivity change broadcast for active network, since 1309 // global background policy change is radical. 1310 final int networkType = mActiveDefaultNetwork; 1311 if (isNetworkTypeValid(networkType)) { 1312 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1313 if (tracker != null) { 1314 final NetworkInfo info = tracker.getNetworkInfo(); 1315 if (info != null && info.isConnected()) { 1316 sendConnectedBroadcast(info); 1317 } 1318 } 1319 } 1320 } 1321 }; 1322 1323 @Override 1324 public void setPolicyDataEnable(int networkType, boolean enabled) { 1325 // only someone like NPMS should only be calling us 1326 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1327 1328 mHandler.sendMessage(mHandler.obtainMessage( 1329 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1330 } 1331 1332 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1333 // TODO - handle this passing to factories 1334// if (isNetworkTypeValid(networkType)) { 1335// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1336// if (tracker != null) { 1337// tracker.setPolicyDataEnable(enabled); 1338// } 1339// } 1340 } 1341 1342 private void enforceInternetPermission() { 1343 mContext.enforceCallingOrSelfPermission( 1344 android.Manifest.permission.INTERNET, 1345 "ConnectivityService"); 1346 } 1347 1348 private void enforceAccessPermission() { 1349 mContext.enforceCallingOrSelfPermission( 1350 android.Manifest.permission.ACCESS_NETWORK_STATE, 1351 "ConnectivityService"); 1352 } 1353 1354 private void enforceChangePermission() { 1355 mContext.enforceCallingOrSelfPermission( 1356 android.Manifest.permission.CHANGE_NETWORK_STATE, 1357 "ConnectivityService"); 1358 } 1359 1360 // TODO Make this a special check when it goes public 1361 private void enforceTetherChangePermission() { 1362 mContext.enforceCallingOrSelfPermission( 1363 android.Manifest.permission.CHANGE_NETWORK_STATE, 1364 "ConnectivityService"); 1365 } 1366 1367 private void enforceTetherAccessPermission() { 1368 mContext.enforceCallingOrSelfPermission( 1369 android.Manifest.permission.ACCESS_NETWORK_STATE, 1370 "ConnectivityService"); 1371 } 1372 1373 private void enforceConnectivityInternalPermission() { 1374 mContext.enforceCallingOrSelfPermission( 1375 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1376 "ConnectivityService"); 1377 } 1378 1379 public void sendConnectedBroadcast(NetworkInfo info) { 1380 enforceConnectivityInternalPermission(); 1381 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1382 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1383 } 1384 1385 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1386 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1387 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1388 } 1389 1390 private void sendInetConditionBroadcast(NetworkInfo info) { 1391 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1392 } 1393 1394 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1395 if (mLockdownTracker != null) { 1396 info = mLockdownTracker.augmentNetworkInfo(info); 1397 } 1398 1399 Intent intent = new Intent(bcastType); 1400 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1401 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1402 if (info.isFailover()) { 1403 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1404 info.setFailover(false); 1405 } 1406 if (info.getReason() != null) { 1407 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1408 } 1409 if (info.getExtraInfo() != null) { 1410 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1411 info.getExtraInfo()); 1412 } 1413 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1414 return intent; 1415 } 1416 1417 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1418 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1419 } 1420 1421 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1422 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1423 } 1424 1425 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1426 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1427 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1428 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1429 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1430 final long ident = Binder.clearCallingIdentity(); 1431 try { 1432 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1433 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1434 } finally { 1435 Binder.restoreCallingIdentity(ident); 1436 } 1437 } 1438 1439 private void sendStickyBroadcast(Intent intent) { 1440 synchronized(this) { 1441 if (!mSystemReady) { 1442 mInitialBroadcast = new Intent(intent); 1443 } 1444 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1445 if (DBG) { 1446 log("sendStickyBroadcast: action=" + intent.getAction()); 1447 } 1448 1449 final long ident = Binder.clearCallingIdentity(); 1450 try { 1451 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1452 } finally { 1453 Binder.restoreCallingIdentity(ident); 1454 } 1455 } 1456 } 1457 1458 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1459 if (delayMs <= 0) { 1460 sendStickyBroadcast(intent); 1461 } else { 1462 if (VDBG) { 1463 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1464 + intent.getAction()); 1465 } 1466 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1467 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1468 } 1469 } 1470 1471 void systemReady() { 1472 // start network sampling .. 1473 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1474 intent.setPackage(mContext.getPackageName()); 1475 1476 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1477 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1478 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1479 1480 loadGlobalProxy(); 1481 1482 synchronized(this) { 1483 mSystemReady = true; 1484 if (mInitialBroadcast != null) { 1485 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1486 mInitialBroadcast = null; 1487 } 1488 } 1489 // load the global proxy at startup 1490 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1491 1492 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1493 // for user to unlock device. 1494 if (!updateLockdownVpn()) { 1495 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1496 mContext.registerReceiver(mUserPresentReceiver, filter); 1497 } 1498 1499 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1500 } 1501 1502 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1503 @Override 1504 public void onReceive(Context context, Intent intent) { 1505 // Try creating lockdown tracker, since user present usually means 1506 // unlocked keystore. 1507 if (updateLockdownVpn()) { 1508 mContext.unregisterReceiver(this); 1509 } 1510 } 1511 }; 1512 1513 /** @hide */ 1514 @Override 1515 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1516 enforceConnectivityInternalPermission(); 1517 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1518// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1519 } 1520 1521 /** 1522 * Setup data activity tracking for the given network. 1523 * 1524 * Every {@code setupDataActivityTracking} should be paired with a 1525 * {@link #removeDataActivityTracking} for cleanup. 1526 */ 1527 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1528 final String iface = networkAgent.linkProperties.getInterfaceName(); 1529 1530 final int timeout; 1531 int type = ConnectivityManager.TYPE_NONE; 1532 1533 if (networkAgent.networkCapabilities.hasTransport( 1534 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1535 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1536 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1537 5); 1538 type = ConnectivityManager.TYPE_MOBILE; 1539 } else if (networkAgent.networkCapabilities.hasTransport( 1540 NetworkCapabilities.TRANSPORT_WIFI)) { 1541 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1542 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1543 0); 1544 type = ConnectivityManager.TYPE_WIFI; 1545 } else { 1546 // do not track any other networks 1547 timeout = 0; 1548 } 1549 1550 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1551 try { 1552 mNetd.addIdleTimer(iface, timeout, type); 1553 } catch (Exception e) { 1554 // You shall not crash! 1555 loge("Exception in setupDataActivityTracking " + e); 1556 } 1557 } 1558 } 1559 1560 /** 1561 * Remove data activity tracking when network disconnects. 1562 */ 1563 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1564 final String iface = networkAgent.linkProperties.getInterfaceName(); 1565 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1566 1567 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1568 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1569 try { 1570 // the call fails silently if no idletimer setup for this interface 1571 mNetd.removeIdleTimer(iface); 1572 } catch (Exception e) { 1573 loge("Exception in removeDataActivityTracking " + e); 1574 } 1575 } 1576 } 1577 1578 /** 1579 * Reads the network specific MTU size from reources. 1580 * and set it on it's iface. 1581 */ 1582 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1583 final String iface = newLp.getInterfaceName(); 1584 final int mtu = newLp.getMtu(); 1585 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1586 if (VDBG) log("identical MTU - not setting"); 1587 return; 1588 } 1589 1590 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1591 loge("Unexpected mtu value: " + mtu + ", " + iface); 1592 return; 1593 } 1594 1595 // Cannot set MTU without interface name 1596 if (TextUtils.isEmpty(iface)) { 1597 loge("Setting MTU size with null iface."); 1598 return; 1599 } 1600 1601 try { 1602 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1603 mNetd.setMtu(iface, mtu); 1604 } catch (Exception e) { 1605 Slog.e(TAG, "exception in setMtu()" + e); 1606 } 1607 } 1608 1609 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1610 1611 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1612 if (isDefaultNetwork(nai) == false) { 1613 return; 1614 } 1615 1616 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1617 String[] values = null; 1618 if (tcpBufferSizes != null) { 1619 values = tcpBufferSizes.split(","); 1620 } 1621 1622 if (values == null || values.length != 6) { 1623 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1624 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1625 values = tcpBufferSizes.split(","); 1626 } 1627 1628 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1629 1630 try { 1631 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1632 1633 final String prefix = "/sys/kernel/ipv4/tcp_"; 1634 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1635 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1636 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1637 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1638 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1639 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1640 mCurrentTcpBufferSizes = tcpBufferSizes; 1641 } catch (IOException e) { 1642 loge("Can't set TCP buffer sizes:" + e); 1643 } 1644 1645 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1646 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1647 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1648 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1649 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1650 if (rwndValue != 0) { 1651 SystemProperties.set(sysctlKey, rwndValue.toString()); 1652 } 1653 } 1654 1655 private void flushVmDnsCache() { 1656 /* 1657 * Tell the VMs to toss their DNS caches 1658 */ 1659 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1660 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1661 /* 1662 * Connectivity events can happen before boot has completed ... 1663 */ 1664 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1665 final long ident = Binder.clearCallingIdentity(); 1666 try { 1667 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1668 } finally { 1669 Binder.restoreCallingIdentity(ident); 1670 } 1671 } 1672 1673 @Override 1674 public int getRestoreDefaultNetworkDelay(int networkType) { 1675 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1676 NETWORK_RESTORE_DELAY_PROP_NAME); 1677 if(restoreDefaultNetworkDelayStr != null && 1678 restoreDefaultNetworkDelayStr.length() != 0) { 1679 try { 1680 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1681 } catch (NumberFormatException e) { 1682 } 1683 } 1684 // if the system property isn't set, use the value for the apn type 1685 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1686 1687 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1688 (mNetConfigs[networkType] != null)) { 1689 ret = mNetConfigs[networkType].restoreTime; 1690 } 1691 return ret; 1692 } 1693 1694 @Override 1695 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1696 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1697 if (mContext.checkCallingOrSelfPermission( 1698 android.Manifest.permission.DUMP) 1699 != PackageManager.PERMISSION_GRANTED) { 1700 pw.println("Permission Denial: can't dump ConnectivityService " + 1701 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1702 Binder.getCallingUid()); 1703 return; 1704 } 1705 1706 pw.println("NetworkFactories for:"); 1707 pw.increaseIndent(); 1708 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1709 pw.println(nfi.name); 1710 } 1711 pw.decreaseIndent(); 1712 pw.println(); 1713 1714 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1715 pw.print("Active default network: "); 1716 if (defaultNai == null) { 1717 pw.println("none"); 1718 } else { 1719 pw.println(defaultNai.network.netId); 1720 } 1721 pw.println(); 1722 1723 pw.println("Current Networks:"); 1724 pw.increaseIndent(); 1725 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1726 pw.println(nai.toString()); 1727 pw.increaseIndent(); 1728 pw.println("Requests:"); 1729 pw.increaseIndent(); 1730 for (int i = 0; i < nai.networkRequests.size(); i++) { 1731 pw.println(nai.networkRequests.valueAt(i).toString()); 1732 } 1733 pw.decreaseIndent(); 1734 pw.println("Lingered:"); 1735 pw.increaseIndent(); 1736 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1737 pw.decreaseIndent(); 1738 pw.decreaseIndent(); 1739 } 1740 pw.decreaseIndent(); 1741 pw.println(); 1742 1743 pw.println("Network Requests:"); 1744 pw.increaseIndent(); 1745 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1746 pw.println(nri.toString()); 1747 } 1748 pw.println(); 1749 pw.decreaseIndent(); 1750 1751 pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork); 1752 if (mActiveDefaultNetwork != TYPE_NONE) { 1753 NetworkInfo activeNetworkInfo = getActiveNetworkInfo(); 1754 if (activeNetworkInfo != null) { 1755 pw.print(" " + activeNetworkInfo.getState() + 1756 "/" + activeNetworkInfo.getDetailedState()); 1757 } 1758 } 1759 pw.println(); 1760 1761 pw.println("mLegacyTypeTracker:"); 1762 pw.increaseIndent(); 1763 mLegacyTypeTracker.dump(pw); 1764 pw.decreaseIndent(); 1765 pw.println(); 1766 1767 synchronized (this) { 1768 pw.println("NetworkTransitionWakeLock is currently " + 1769 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1770 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1771 } 1772 pw.println(); 1773 1774 mTethering.dump(fd, pw, args); 1775 1776 if (mInetLog != null) { 1777 pw.println(); 1778 pw.println("Inet condition reports:"); 1779 pw.increaseIndent(); 1780 for(int i = 0; i < mInetLog.size(); i++) { 1781 pw.println(mInetLog.get(i)); 1782 } 1783 pw.decreaseIndent(); 1784 } 1785 } 1786 1787 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1788 if (nai.network == null) return false; 1789 final NetworkAgentInfo officialNai; 1790 synchronized (mNetworkForNetId) { 1791 officialNai = mNetworkForNetId.get(nai.network.netId); 1792 } 1793 if (officialNai != null && officialNai.equals(nai)) return true; 1794 if (officialNai != null || VDBG) { 1795 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1796 " - " + nai); 1797 } 1798 return false; 1799 } 1800 1801 // must be stateless - things change under us. 1802 private class NetworkStateTrackerHandler extends Handler { 1803 public NetworkStateTrackerHandler(Looper looper) { 1804 super(looper); 1805 } 1806 1807 @Override 1808 public void handleMessage(Message msg) { 1809 NetworkInfo info; 1810 switch (msg.what) { 1811 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1812 handleAsyncChannelHalfConnect(msg); 1813 break; 1814 } 1815 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1816 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1817 if (nai != null) nai.asyncChannel.disconnect(); 1818 break; 1819 } 1820 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1821 handleAsyncChannelDisconnected(msg); 1822 break; 1823 } 1824 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1825 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1826 if (nai == null) { 1827 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1828 } else { 1829 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1830 } 1831 break; 1832 } 1833 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1834 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1835 if (nai == null) { 1836 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1837 } else { 1838 if (VDBG) { 1839 log("Update of LinkProperties for " + nai.name() + 1840 "; created=" + nai.created); 1841 } 1842 LinkProperties oldLp = nai.linkProperties; 1843 synchronized (nai) { 1844 nai.linkProperties = (LinkProperties)msg.obj; 1845 } 1846 if (nai.created) updateLinkProperties(nai, oldLp); 1847 } 1848 break; 1849 } 1850 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1851 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1852 if (nai == null) { 1853 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1854 break; 1855 } 1856 info = (NetworkInfo) msg.obj; 1857 updateNetworkInfo(nai, info); 1858 break; 1859 } 1860 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1861 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1862 if (nai == null) { 1863 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1864 break; 1865 } 1866 Integer score = (Integer) msg.obj; 1867 if (score != null) updateNetworkScore(nai, score.intValue()); 1868 break; 1869 } 1870 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1871 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1872 if (nai == null) { 1873 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1874 break; 1875 } 1876 try { 1877 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1878 } catch (Exception e) { 1879 // Never crash! 1880 loge("Exception in addVpnUidRanges: " + e); 1881 } 1882 break; 1883 } 1884 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1885 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1886 if (nai == null) { 1887 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1888 break; 1889 } 1890 try { 1891 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1892 } catch (Exception e) { 1893 // Never crash! 1894 loge("Exception in removeVpnUidRanges: " + e); 1895 } 1896 break; 1897 } 1898 case NetworkAgent.EVENT_BLOCK_ADDRESS_FAMILY: { 1899 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1900 if (nai == null) { 1901 loge("EVENT_BLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1902 break; 1903 } 1904 try { 1905 mNetd.blockAddressFamily((Integer) msg.obj, nai.network.netId, 1906 nai.linkProperties.getInterfaceName()); 1907 } catch (Exception e) { 1908 // Never crash! 1909 loge("Exception in blockAddressFamily: " + e); 1910 } 1911 break; 1912 } 1913 case NetworkAgent.EVENT_UNBLOCK_ADDRESS_FAMILY: { 1914 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1915 if (nai == null) { 1916 loge("EVENT_UNBLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1917 break; 1918 } 1919 try { 1920 mNetd.unblockAddressFamily((Integer) msg.obj, nai.network.netId, 1921 nai.linkProperties.getInterfaceName()); 1922 } catch (Exception e) { 1923 // Never crash! 1924 loge("Exception in blockAddressFamily: " + e); 1925 } 1926 break; 1927 } 1928 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1929 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1930 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1931 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1932 if (valid) { 1933 if (DBG) log("Validated " + nai.name()); 1934 nai.validated = true; 1935 rematchNetworkAndRequests(nai); 1936 } 1937 updateInetCondition(nai, valid); 1938 // Let the NetworkAgent know the state of its network 1939 nai.asyncChannel.sendMessage( 1940 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1941 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1942 0, null); 1943 } 1944 break; 1945 } 1946 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1947 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1948 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1949 handleLingerComplete(nai); 1950 } 1951 break; 1952 } 1953 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1954 if (msg.arg1 == 0) { 1955 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1956 } else { 1957 NetworkAgentInfo nai = null; 1958 synchronized (mNetworkForNetId) { 1959 nai = mNetworkForNetId.get(msg.arg2); 1960 } 1961 if (nai == null) { 1962 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1963 break; 1964 } 1965 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1966 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1967 } 1968 break; 1969 } 1970 case NetworkStateTracker.EVENT_STATE_CHANGED: { 1971 info = (NetworkInfo) msg.obj; 1972 NetworkInfo.State state = info.getState(); 1973 1974 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 1975 (state == NetworkInfo.State.DISCONNECTED) || 1976 (state == NetworkInfo.State.SUSPENDED)) { 1977 log("ConnectivityChange for " + 1978 info.getTypeName() + ": " + 1979 state + "/" + info.getDetailedState()); 1980 } 1981 1982 // Since mobile has the notion of a network/apn that can be used for 1983 // provisioning we need to check every time we're connected as 1984 // CaptiveProtalTracker won't detected it because DCT doesn't report it 1985 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 1986 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 1987 // is received by MDST and sent here as EVENT_STATE_CHANGED. 1988 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 1989 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 1990 Settings.Global.DEVICE_PROVISIONED, 0)) 1991 && (((state == NetworkInfo.State.CONNECTED) 1992 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 1993 || info.isConnectedToProvisioningNetwork())) { 1994 log("ConnectivityChange checkMobileProvisioning for" 1995 + " TYPE_MOBILE or ProvisioningNetwork"); 1996 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 1997 } 1998 1999 EventLogTags.writeConnectivityStateChanged( 2000 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2001 2002 if (info.isConnectedToProvisioningNetwork()) { 2003 /** 2004 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2005 * for now its an in between network, its a network that 2006 * is actually a default network but we don't want it to be 2007 * announced as such to keep background applications from 2008 * trying to use it. It turns out that some still try so we 2009 * take the additional step of clearing any default routes 2010 * to the link that may have incorrectly setup by the lower 2011 * levels. 2012 */ 2013 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 2014 if (DBG) { 2015 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2016 } 2017 2018 // Clear any default routes setup by the radio so 2019 // any activity by applications trying to use this 2020 // connection will fail until the provisioning network 2021 // is enabled. 2022 /* 2023 for (RouteInfo r : lp.getRoutes()) { 2024 removeRoute(lp, r, TO_DEFAULT_TABLE, 2025 mNetTrackers[info.getType()].getNetwork().netId); 2026 } 2027 */ 2028 } else if (state == NetworkInfo.State.DISCONNECTED) { 2029 } else if (state == NetworkInfo.State.SUSPENDED) { 2030 } else if (state == NetworkInfo.State.CONNECTED) { 2031 // handleConnect(info); 2032 } 2033 if (mLockdownTracker != null) { 2034 mLockdownTracker.onNetworkInfoChanged(info); 2035 } 2036 break; 2037 } 2038 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2039 info = (NetworkInfo) msg.obj; 2040 // TODO: Temporary allowing network configuration 2041 // change not resetting sockets. 2042 // @see bug/4455071 2043 /* 2044 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2045 false); 2046 */ 2047 break; 2048 } 2049 } 2050 } 2051 } 2052 2053 private void handleAsyncChannelHalfConnect(Message msg) { 2054 AsyncChannel ac = (AsyncChannel) msg.obj; 2055 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2056 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2057 if (VDBG) log("NetworkFactory connected"); 2058 // A network factory has connected. Send it all current NetworkRequests. 2059 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2060 if (nri.isRequest == false) continue; 2061 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2062 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2063 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2064 } 2065 } else { 2066 loge("Error connecting NetworkFactory"); 2067 mNetworkFactoryInfos.remove(msg.obj); 2068 } 2069 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2070 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2071 if (VDBG) log("NetworkAgent connected"); 2072 // A network agent has requested a connection. Establish the connection. 2073 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2074 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2075 } else { 2076 loge("Error connecting NetworkAgent"); 2077 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2078 if (nai != null) { 2079 synchronized (mNetworkForNetId) { 2080 mNetworkForNetId.remove(nai.network.netId); 2081 } 2082 // Just in case. 2083 mLegacyTypeTracker.remove(nai); 2084 } 2085 } 2086 } 2087 } 2088 private void handleAsyncChannelDisconnected(Message msg) { 2089 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2090 if (nai != null) { 2091 if (DBG) { 2092 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2093 } 2094 // A network agent has disconnected. 2095 if (nai.created) { 2096 // Tell netd to clean up the configuration for this network 2097 // (routing rules, DNS, etc). 2098 try { 2099 mNetd.removeNetwork(nai.network.netId); 2100 } catch (Exception e) { 2101 loge("Exception removing network: " + e); 2102 } 2103 } 2104 // TODO - if we move the logic to the network agent (have them disconnect 2105 // because they lost all their requests or because their score isn't good) 2106 // then they would disconnect organically, report their new state and then 2107 // disconnect the channel. 2108 if (nai.networkInfo.isConnected()) { 2109 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2110 null, null); 2111 } 2112 if (isDefaultNetwork(nai)) { 2113 mDefaultInetConditionPublished = 0; 2114 } 2115 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2116 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2117 mNetworkAgentInfos.remove(msg.replyTo); 2118 updateClat(null, nai.linkProperties, nai); 2119 mLegacyTypeTracker.remove(nai); 2120 synchronized (mNetworkForNetId) { 2121 mNetworkForNetId.remove(nai.network.netId); 2122 } 2123 // Since we've lost the network, go through all the requests that 2124 // it was satisfying and see if any other factory can satisfy them. 2125 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2126 for (int i = 0; i < nai.networkRequests.size(); i++) { 2127 NetworkRequest request = nai.networkRequests.valueAt(i); 2128 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2129 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2130 if (DBG) { 2131 log("Checking for replacement network to handle request " + request ); 2132 } 2133 mNetworkForRequestId.remove(request.requestId); 2134 sendUpdatedScoreToFactories(request, 0); 2135 NetworkAgentInfo alternative = null; 2136 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 2137 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 2138 if (existing.networkInfo.isConnected() && 2139 request.networkCapabilities.satisfiedByNetworkCapabilities( 2140 existing.networkCapabilities) && 2141 (alternative == null || 2142 alternative.getCurrentScore() < existing.getCurrentScore())) { 2143 alternative = existing; 2144 } 2145 } 2146 if (alternative != null) { 2147 if (DBG) log(" found replacement in " + alternative.name()); 2148 if (!toActivate.contains(alternative)) { 2149 toActivate.add(alternative); 2150 } 2151 } 2152 } 2153 } 2154 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2155 removeDataActivityTracking(nai); 2156 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 2157 requestNetworkTransitionWakelock(nai.name()); 2158 } 2159 for (NetworkAgentInfo networkToActivate : toActivate) { 2160 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2161 } 2162 } 2163 } 2164 2165 private void handleRegisterNetworkRequest(Message msg) { 2166 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2167 final NetworkCapabilities newCap = nri.request.networkCapabilities; 2168 int score = 0; 2169 2170 // Check for the best currently alive network that satisfies this request 2171 NetworkAgentInfo bestNetwork = null; 2172 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2173 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2174 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 2175 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2176 if ((bestNetwork == null) || 2177 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2178 if (!nri.isRequest) { 2179 // Not setting bestNetwork here as a listening NetworkRequest may be 2180 // satisfied by multiple Networks. Instead the request is added to 2181 // each satisfying Network and notified about each. 2182 network.addRequest(nri.request); 2183 notifyNetworkCallback(network, nri); 2184 } else { 2185 bestNetwork = network; 2186 } 2187 } 2188 } 2189 } 2190 if (bestNetwork != null) { 2191 if (DBG) log("using " + bestNetwork.name()); 2192 if (bestNetwork.networkInfo.isConnected()) { 2193 // Cancel any lingering so the linger timeout doesn't teardown this network 2194 // even though we have a request for it. 2195 bestNetwork.networkLingered.clear(); 2196 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2197 } 2198 bestNetwork.addRequest(nri.request); 2199 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2200 notifyNetworkCallback(bestNetwork, nri); 2201 score = bestNetwork.getCurrentScore(); 2202 if (nri.request.legacyType != TYPE_NONE) { 2203 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2204 } 2205 } 2206 mNetworkRequests.put(nri.request, nri); 2207 if (nri.isRequest) { 2208 if (DBG) log("sending new NetworkRequest to factories"); 2209 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2210 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2211 0, nri.request); 2212 } 2213 } 2214 } 2215 2216 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2217 NetworkRequestInfo nri = mNetworkRequests.get(request); 2218 if (nri != null) { 2219 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2220 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2221 return; 2222 } 2223 if (DBG) log("releasing NetworkRequest " + request); 2224 nri.unlinkDeathRecipient(); 2225 mNetworkRequests.remove(request); 2226 if (nri.isRequest) { 2227 // Find all networks that are satisfying this request and remove the request 2228 // from their request lists. 2229 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2230 if (nai.networkRequests.get(nri.request.requestId) != null) { 2231 nai.networkRequests.remove(nri.request.requestId); 2232 if (DBG) { 2233 log(" Removing from current network " + nai.name() + 2234 ", leaving " + nai.networkRequests.size() + 2235 " requests."); 2236 } 2237 // check if has any requests remaining and if not, 2238 // disconnect (unless it's a VPN). 2239 boolean keep = nai.isVPN(); 2240 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2241 NetworkRequest r = nai.networkRequests.valueAt(i); 2242 if (mNetworkRequests.get(r).isRequest) keep = true; 2243 } 2244 if (!keep) { 2245 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2246 nai.asyncChannel.disconnect(); 2247 } 2248 } 2249 } 2250 2251 // Maintain the illusion. When this request arrived, we might have preteneded 2252 // that a network connected to serve it, even though the network was already 2253 // connected. Now that this request has gone away, we might have to pretend 2254 // that the network disconnected. LegacyTypeTracker will generate that 2255 // phatom disconnect for this type. 2256 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2257 if (nai != null) { 2258 mNetworkForRequestId.remove(nri.request.requestId); 2259 if (nri.request.legacyType != TYPE_NONE) { 2260 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2261 } 2262 } 2263 2264 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2265 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2266 nri.request); 2267 } 2268 } else { 2269 // listens don't have a singular affectedNetwork. Check all networks to see 2270 // if this listen request applies and remove it. 2271 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2272 nai.networkRequests.remove(nri.request.requestId); 2273 } 2274 } 2275 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2276 } 2277 } 2278 2279 private class InternalHandler extends Handler { 2280 public InternalHandler(Looper looper) { 2281 super(looper); 2282 } 2283 2284 @Override 2285 public void handleMessage(Message msg) { 2286 NetworkInfo info; 2287 switch (msg.what) { 2288 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2289 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2290 String causedBy = null; 2291 synchronized (ConnectivityService.this) { 2292 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2293 mNetTransitionWakeLock.isHeld()) { 2294 mNetTransitionWakeLock.release(); 2295 causedBy = mNetTransitionWakeLockCausedBy; 2296 } else { 2297 break; 2298 } 2299 } 2300 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2301 log("Failed to find a new network - expiring NetTransition Wakelock"); 2302 } else { 2303 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2304 " cleared because we found a replacement network"); 2305 } 2306 break; 2307 } 2308 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2309 handleDeprecatedGlobalHttpProxy(); 2310 break; 2311 } 2312 case EVENT_SET_DEPENDENCY_MET: { 2313 boolean met = (msg.arg1 == ENABLED); 2314 handleSetDependencyMet(msg.arg2, met); 2315 break; 2316 } 2317 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2318 Intent intent = (Intent)msg.obj; 2319 sendStickyBroadcast(intent); 2320 break; 2321 } 2322 case EVENT_SET_POLICY_DATA_ENABLE: { 2323 final int networkType = msg.arg1; 2324 final boolean enabled = msg.arg2 == ENABLED; 2325 handleSetPolicyDataEnable(networkType, enabled); 2326 break; 2327 } 2328 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2329 int tag = mEnableFailFastMobileDataTag.get(); 2330 if (msg.arg1 == tag) { 2331 MobileDataStateTracker mobileDst = 2332 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2333 if (mobileDst != null) { 2334 mobileDst.setEnableFailFastMobileData(msg.arg2); 2335 } 2336 } else { 2337 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2338 + " != tag:" + tag); 2339 } 2340 break; 2341 } 2342 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2343 handleNetworkSamplingTimeout(); 2344 break; 2345 } 2346 case EVENT_PROXY_HAS_CHANGED: { 2347 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2348 break; 2349 } 2350 case EVENT_REGISTER_NETWORK_FACTORY: { 2351 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2352 break; 2353 } 2354 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2355 handleUnregisterNetworkFactory((Messenger)msg.obj); 2356 break; 2357 } 2358 case EVENT_REGISTER_NETWORK_AGENT: { 2359 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2360 break; 2361 } 2362 case EVENT_REGISTER_NETWORK_REQUEST: 2363 case EVENT_REGISTER_NETWORK_LISTENER: { 2364 handleRegisterNetworkRequest(msg); 2365 break; 2366 } 2367 case EVENT_RELEASE_NETWORK_REQUEST: { 2368 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2369 break; 2370 } 2371 case EVENT_SYSTEM_READY: { 2372 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2373 nai.networkMonitor.systemReady = true; 2374 } 2375 break; 2376 } 2377 } 2378 } 2379 } 2380 2381 // javadoc from interface 2382 public int tether(String iface) { 2383 enforceTetherChangePermission(); 2384 2385 if (isTetheringSupported()) { 2386 return mTethering.tether(iface); 2387 } else { 2388 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2389 } 2390 } 2391 2392 // javadoc from interface 2393 public int untether(String iface) { 2394 enforceTetherChangePermission(); 2395 2396 if (isTetheringSupported()) { 2397 return mTethering.untether(iface); 2398 } else { 2399 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2400 } 2401 } 2402 2403 // javadoc from interface 2404 public int getLastTetherError(String iface) { 2405 enforceTetherAccessPermission(); 2406 2407 if (isTetheringSupported()) { 2408 return mTethering.getLastTetherError(iface); 2409 } else { 2410 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2411 } 2412 } 2413 2414 // TODO - proper iface API for selection by property, inspection, etc 2415 public String[] getTetherableUsbRegexs() { 2416 enforceTetherAccessPermission(); 2417 if (isTetheringSupported()) { 2418 return mTethering.getTetherableUsbRegexs(); 2419 } else { 2420 return new String[0]; 2421 } 2422 } 2423 2424 public String[] getTetherableWifiRegexs() { 2425 enforceTetherAccessPermission(); 2426 if (isTetheringSupported()) { 2427 return mTethering.getTetherableWifiRegexs(); 2428 } else { 2429 return new String[0]; 2430 } 2431 } 2432 2433 public String[] getTetherableBluetoothRegexs() { 2434 enforceTetherAccessPermission(); 2435 if (isTetheringSupported()) { 2436 return mTethering.getTetherableBluetoothRegexs(); 2437 } else { 2438 return new String[0]; 2439 } 2440 } 2441 2442 public int setUsbTethering(boolean enable) { 2443 enforceTetherChangePermission(); 2444 if (isTetheringSupported()) { 2445 return mTethering.setUsbTethering(enable); 2446 } else { 2447 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2448 } 2449 } 2450 2451 // TODO - move iface listing, queries, etc to new module 2452 // javadoc from interface 2453 public String[] getTetherableIfaces() { 2454 enforceTetherAccessPermission(); 2455 return mTethering.getTetherableIfaces(); 2456 } 2457 2458 public String[] getTetheredIfaces() { 2459 enforceTetherAccessPermission(); 2460 return mTethering.getTetheredIfaces(); 2461 } 2462 2463 public String[] getTetheringErroredIfaces() { 2464 enforceTetherAccessPermission(); 2465 return mTethering.getErroredIfaces(); 2466 } 2467 2468 public String[] getTetheredDhcpRanges() { 2469 enforceConnectivityInternalPermission(); 2470 return mTethering.getTetheredDhcpRanges(); 2471 } 2472 2473 // if ro.tether.denied = true we default to no tethering 2474 // gservices could set the secure setting to 1 though to enable it on a build where it 2475 // had previously been turned off. 2476 public boolean isTetheringSupported() { 2477 enforceTetherAccessPermission(); 2478 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2479 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2480 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2481 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2482 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2483 mTethering.getTetherableWifiRegexs().length != 0 || 2484 mTethering.getTetherableBluetoothRegexs().length != 0) && 2485 mTethering.getUpstreamIfaceTypes().length != 0); 2486 } 2487 2488 // Called when we lose the default network and have no replacement yet. 2489 // This will automatically be cleared after X seconds or a new default network 2490 // becomes CONNECTED, whichever happens first. The timer is started by the 2491 // first caller and not restarted by subsequent callers. 2492 private void requestNetworkTransitionWakelock(String forWhom) { 2493 int serialNum = 0; 2494 synchronized (this) { 2495 if (mNetTransitionWakeLock.isHeld()) return; 2496 serialNum = ++mNetTransitionWakeLockSerialNumber; 2497 mNetTransitionWakeLock.acquire(); 2498 mNetTransitionWakeLockCausedBy = forWhom; 2499 } 2500 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2501 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2502 mNetTransitionWakeLockTimeout); 2503 return; 2504 } 2505 2506 // 100 percent is full good, 0 is full bad. 2507 public void reportInetCondition(int networkType, int percentage) { 2508 if (percentage > 50) return; // don't handle good network reports 2509 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2510 if (nai != null) reportBadNetwork(nai.network); 2511 } 2512 2513 public void reportBadNetwork(Network network) { 2514 enforceAccessPermission(); 2515 enforceInternetPermission(); 2516 2517 if (network == null) return; 2518 2519 final int uid = Binder.getCallingUid(); 2520 NetworkAgentInfo nai = null; 2521 synchronized (mNetworkForNetId) { 2522 nai = mNetworkForNetId.get(network.netId); 2523 } 2524 if (nai == null) return; 2525 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2526 synchronized (nai) { 2527 if (isNetworkBlocked(nai, uid)) return; 2528 2529 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2530 } 2531 } 2532 2533 public ProxyInfo getProxy() { 2534 // this information is already available as a world read/writable jvm property 2535 // so this API change wouldn't have a benifit. It also breaks the passing 2536 // of proxy info to all the JVMs. 2537 // enforceAccessPermission(); 2538 synchronized (mProxyLock) { 2539 ProxyInfo ret = mGlobalProxy; 2540 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2541 return ret; 2542 } 2543 } 2544 2545 public void setGlobalProxy(ProxyInfo proxyProperties) { 2546 enforceConnectivityInternalPermission(); 2547 2548 synchronized (mProxyLock) { 2549 if (proxyProperties == mGlobalProxy) return; 2550 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2551 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2552 2553 String host = ""; 2554 int port = 0; 2555 String exclList = ""; 2556 String pacFileUrl = ""; 2557 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2558 (proxyProperties.getPacFileUrl() != null))) { 2559 if (!proxyProperties.isValid()) { 2560 if (DBG) 2561 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2562 return; 2563 } 2564 mGlobalProxy = new ProxyInfo(proxyProperties); 2565 host = mGlobalProxy.getHost(); 2566 port = mGlobalProxy.getPort(); 2567 exclList = mGlobalProxy.getExclusionListAsString(); 2568 if (proxyProperties.getPacFileUrl() != null) { 2569 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2570 } 2571 } else { 2572 mGlobalProxy = null; 2573 } 2574 ContentResolver res = mContext.getContentResolver(); 2575 final long token = Binder.clearCallingIdentity(); 2576 try { 2577 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2578 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2579 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2580 exclList); 2581 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2582 } finally { 2583 Binder.restoreCallingIdentity(token); 2584 } 2585 } 2586 2587 if (mGlobalProxy == null) { 2588 proxyProperties = mDefaultProxy; 2589 } 2590 sendProxyBroadcast(proxyProperties); 2591 } 2592 2593 private void loadGlobalProxy() { 2594 ContentResolver res = mContext.getContentResolver(); 2595 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2596 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2597 String exclList = Settings.Global.getString(res, 2598 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2599 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2600 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2601 ProxyInfo proxyProperties; 2602 if (!TextUtils.isEmpty(pacFileUrl)) { 2603 proxyProperties = new ProxyInfo(pacFileUrl); 2604 } else { 2605 proxyProperties = new ProxyInfo(host, port, exclList); 2606 } 2607 if (!proxyProperties.isValid()) { 2608 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2609 return; 2610 } 2611 2612 synchronized (mProxyLock) { 2613 mGlobalProxy = proxyProperties; 2614 } 2615 } 2616 } 2617 2618 public ProxyInfo getGlobalProxy() { 2619 // this information is already available as a world read/writable jvm property 2620 // so this API change wouldn't have a benifit. It also breaks the passing 2621 // of proxy info to all the JVMs. 2622 // enforceAccessPermission(); 2623 synchronized (mProxyLock) { 2624 return mGlobalProxy; 2625 } 2626 } 2627 2628 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2629 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2630 && (proxy.getPacFileUrl() == null)) { 2631 proxy = null; 2632 } 2633 synchronized (mProxyLock) { 2634 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2635 if (mDefaultProxy == proxy) return; // catches repeated nulls 2636 if (proxy != null && !proxy.isValid()) { 2637 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2638 return; 2639 } 2640 2641 // This call could be coming from the PacManager, containing the port of the local 2642 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2643 // global (to get the correct local port), and send a broadcast. 2644 // TODO: Switch PacManager to have its own message to send back rather than 2645 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2646 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 2647 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2648 mGlobalProxy = proxy; 2649 sendProxyBroadcast(mGlobalProxy); 2650 return; 2651 } 2652 mDefaultProxy = proxy; 2653 2654 if (mGlobalProxy != null) return; 2655 if (!mDefaultProxyDisabled) { 2656 sendProxyBroadcast(proxy); 2657 } 2658 } 2659 } 2660 2661 private void handleDeprecatedGlobalHttpProxy() { 2662 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2663 Settings.Global.HTTP_PROXY); 2664 if (!TextUtils.isEmpty(proxy)) { 2665 String data[] = proxy.split(":"); 2666 if (data.length == 0) { 2667 return; 2668 } 2669 2670 String proxyHost = data[0]; 2671 int proxyPort = 8080; 2672 if (data.length > 1) { 2673 try { 2674 proxyPort = Integer.parseInt(data[1]); 2675 } catch (NumberFormatException e) { 2676 return; 2677 } 2678 } 2679 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2680 setGlobalProxy(p); 2681 } 2682 } 2683 2684 private void sendProxyBroadcast(ProxyInfo proxy) { 2685 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2686 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2687 if (DBG) log("sending Proxy Broadcast for " + proxy); 2688 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2689 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2690 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2691 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2692 final long ident = Binder.clearCallingIdentity(); 2693 try { 2694 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2695 } finally { 2696 Binder.restoreCallingIdentity(ident); 2697 } 2698 } 2699 2700 private static class SettingsObserver extends ContentObserver { 2701 private int mWhat; 2702 private Handler mHandler; 2703 SettingsObserver(Handler handler, int what) { 2704 super(handler); 2705 mHandler = handler; 2706 mWhat = what; 2707 } 2708 2709 void observe(Context context) { 2710 ContentResolver resolver = context.getContentResolver(); 2711 resolver.registerContentObserver(Settings.Global.getUriFor( 2712 Settings.Global.HTTP_PROXY), false, this); 2713 } 2714 2715 @Override 2716 public void onChange(boolean selfChange) { 2717 mHandler.obtainMessage(mWhat).sendToTarget(); 2718 } 2719 } 2720 2721 private static void log(String s) { 2722 Slog.d(TAG, s); 2723 } 2724 2725 private static void loge(String s) { 2726 Slog.e(TAG, s); 2727 } 2728 2729 int convertFeatureToNetworkType(int networkType, String feature) { 2730 int usedNetworkType = networkType; 2731 2732 if(networkType == ConnectivityManager.TYPE_MOBILE) { 2733 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 2734 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 2735 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 2736 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 2737 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 2738 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 2739 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 2740 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 2741 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 2742 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 2743 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 2744 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 2745 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 2746 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 2747 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 2748 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 2749 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 2750 } else { 2751 Slog.e(TAG, "Can't match any mobile netTracker!"); 2752 } 2753 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 2754 if (TextUtils.equals(feature, "p2p")) { 2755 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 2756 } else { 2757 Slog.e(TAG, "Can't match any wifi netTracker!"); 2758 } 2759 } else { 2760 Slog.e(TAG, "Unexpected network type"); 2761 } 2762 return usedNetworkType; 2763 } 2764 2765 private static <T> T checkNotNull(T value, String message) { 2766 if (value == null) { 2767 throw new NullPointerException(message); 2768 } 2769 return value; 2770 } 2771 2772 /** 2773 * Prepare for a VPN application. This method is used by VpnDialogs 2774 * and not available in ConnectivityManager. Permissions are checked 2775 * in Vpn class. 2776 * @hide 2777 */ 2778 @Override 2779 public boolean prepareVpn(String oldPackage, String newPackage) { 2780 throwIfLockdownEnabled(); 2781 int user = UserHandle.getUserId(Binder.getCallingUid()); 2782 synchronized(mVpns) { 2783 return mVpns.get(user).prepare(oldPackage, newPackage); 2784 } 2785 } 2786 2787 /** 2788 * Set whether the current VPN package has the ability to launch VPNs without 2789 * user intervention. This method is used by system UIs and not available 2790 * in ConnectivityManager. Permissions are checked in Vpn class. 2791 * @hide 2792 */ 2793 @Override 2794 public void setVpnPackageAuthorization(boolean authorized) { 2795 int user = UserHandle.getUserId(Binder.getCallingUid()); 2796 synchronized(mVpns) { 2797 mVpns.get(user).setPackageAuthorization(authorized); 2798 } 2799 } 2800 2801 /** 2802 * Configure a TUN interface and return its file descriptor. Parameters 2803 * are encoded and opaque to this class. This method is used by VpnBuilder 2804 * and not available in ConnectivityManager. Permissions are checked in 2805 * Vpn class. 2806 * @hide 2807 */ 2808 @Override 2809 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2810 throwIfLockdownEnabled(); 2811 int user = UserHandle.getUserId(Binder.getCallingUid()); 2812 synchronized(mVpns) { 2813 return mVpns.get(user).establish(config); 2814 } 2815 } 2816 2817 /** 2818 * Start legacy VPN, controlling native daemons as needed. Creates a 2819 * secondary thread to perform connection work, returning quickly. 2820 */ 2821 @Override 2822 public void startLegacyVpn(VpnProfile profile) { 2823 throwIfLockdownEnabled(); 2824 final LinkProperties egress = getActiveLinkProperties(); 2825 if (egress == null) { 2826 throw new IllegalStateException("Missing active network connection"); 2827 } 2828 int user = UserHandle.getUserId(Binder.getCallingUid()); 2829 synchronized(mVpns) { 2830 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2831 } 2832 } 2833 2834 /** 2835 * Return the information of the ongoing legacy VPN. This method is used 2836 * by VpnSettings and not available in ConnectivityManager. Permissions 2837 * are checked in Vpn class. 2838 * @hide 2839 */ 2840 @Override 2841 public LegacyVpnInfo getLegacyVpnInfo() { 2842 throwIfLockdownEnabled(); 2843 int user = UserHandle.getUserId(Binder.getCallingUid()); 2844 synchronized(mVpns) { 2845 return mVpns.get(user).getLegacyVpnInfo(); 2846 } 2847 } 2848 2849 /** 2850 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2851 * not available in ConnectivityManager. 2852 * Permissions are checked in Vpn class. 2853 * @hide 2854 */ 2855 @Override 2856 public VpnConfig getVpnConfig() { 2857 int user = UserHandle.getUserId(Binder.getCallingUid()); 2858 synchronized(mVpns) { 2859 return mVpns.get(user).getVpnConfig(); 2860 } 2861 } 2862 2863 @Override 2864 public boolean updateLockdownVpn() { 2865 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2866 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2867 return false; 2868 } 2869 2870 // Tear down existing lockdown if profile was removed 2871 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2872 if (mLockdownEnabled) { 2873 if (!mKeyStore.isUnlocked()) { 2874 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2875 return false; 2876 } 2877 2878 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2879 final VpnProfile profile = VpnProfile.decode( 2880 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2881 int user = UserHandle.getUserId(Binder.getCallingUid()); 2882 synchronized(mVpns) { 2883 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2884 profile)); 2885 } 2886 } else { 2887 setLockdownTracker(null); 2888 } 2889 2890 return true; 2891 } 2892 2893 /** 2894 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2895 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2896 */ 2897 private void setLockdownTracker(LockdownVpnTracker tracker) { 2898 // Shutdown any existing tracker 2899 final LockdownVpnTracker existing = mLockdownTracker; 2900 mLockdownTracker = null; 2901 if (existing != null) { 2902 existing.shutdown(); 2903 } 2904 2905 try { 2906 if (tracker != null) { 2907 mNetd.setFirewallEnabled(true); 2908 mNetd.setFirewallInterfaceRule("lo", true); 2909 mLockdownTracker = tracker; 2910 mLockdownTracker.init(); 2911 } else { 2912 mNetd.setFirewallEnabled(false); 2913 } 2914 } catch (RemoteException e) { 2915 // ignored; NMS lives inside system_server 2916 } 2917 } 2918 2919 private void throwIfLockdownEnabled() { 2920 if (mLockdownEnabled) { 2921 throw new IllegalStateException("Unavailable in lockdown mode"); 2922 } 2923 } 2924 2925 public void supplyMessenger(int networkType, Messenger messenger) { 2926 enforceConnectivityInternalPermission(); 2927 2928 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2929 mNetTrackers[networkType].supplyMessenger(messenger); 2930 } 2931 } 2932 2933 public int findConnectionTypeForIface(String iface) { 2934 enforceConnectivityInternalPermission(); 2935 2936 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2937 2938 synchronized(mNetworkForNetId) { 2939 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2940 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2941 LinkProperties lp = nai.linkProperties; 2942 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2943 return nai.networkInfo.getType(); 2944 } 2945 } 2946 } 2947 return ConnectivityManager.TYPE_NONE; 2948 } 2949 2950 /** 2951 * Have mobile data fail fast if enabled. 2952 * 2953 * @param enabled DctConstants.ENABLED/DISABLED 2954 */ 2955 private void setEnableFailFastMobileData(int enabled) { 2956 int tag; 2957 2958 if (enabled == DctConstants.ENABLED) { 2959 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 2960 } else { 2961 tag = mEnableFailFastMobileDataTag.get(); 2962 } 2963 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 2964 enabled)); 2965 } 2966 2967 private boolean isMobileDataStateTrackerReady() { 2968 MobileDataStateTracker mdst = 2969 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 2970 return (mdst != null) && (mdst.isReady()); 2971 } 2972 2973 /** 2974 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 2975 */ 2976 2977 /** 2978 * No connection was possible to the network. 2979 * This is NOT a warm sim. 2980 */ 2981 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 2982 2983 /** 2984 * A connection was made to the internet, all is well. 2985 * This is NOT a warm sim. 2986 */ 2987 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 2988 2989 /** 2990 * A connection was made but no dns server was available to resolve a name to address. 2991 * This is NOT a warm sim since provisioning network is supported. 2992 */ 2993 private static final int CMP_RESULT_CODE_NO_DNS = 2; 2994 2995 /** 2996 * A connection was made but could not open a TCP connection. 2997 * This is NOT a warm sim since provisioning network is supported. 2998 */ 2999 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 3000 3001 /** 3002 * A connection was made but there was a redirection, we appear to be in walled garden. 3003 * This is an indication of a warm sim on a mobile network such as T-Mobile. 3004 */ 3005 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 3006 3007 /** 3008 * The mobile network is a provisioning network. 3009 * This is an indication of a warm sim on a mobile network such as AT&T. 3010 */ 3011 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 3012 3013 /** 3014 * The mobile network is provisioning 3015 */ 3016 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 3017 3018 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 3019 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 3020 3021 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 3022 3023 @Override 3024 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3025 int timeOutMs = -1; 3026 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 3027 enforceConnectivityInternalPermission(); 3028 3029 final long token = Binder.clearCallingIdentity(); 3030 try { 3031 timeOutMs = suggestedTimeOutMs; 3032 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 3033 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 3034 } 3035 3036 // Check that mobile networks are supported 3037 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 3038 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 3039 if (DBG) log("checkMobileProvisioning: X no mobile network"); 3040 return timeOutMs; 3041 } 3042 3043 // If we're already checking don't do it again 3044 // TODO: Add a queue of results... 3045 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 3046 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 3047 return timeOutMs; 3048 } 3049 3050 // Start off with mobile notification off 3051 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3052 3053 CheckMp checkMp = new CheckMp(mContext, this); 3054 CheckMp.CallBack cb = new CheckMp.CallBack() { 3055 @Override 3056 void onComplete(Integer result) { 3057 if (DBG) log("CheckMp.onComplete: result=" + result); 3058 NetworkInfo ni = 3059 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 3060 switch(result) { 3061 case CMP_RESULT_CODE_CONNECTABLE: 3062 case CMP_RESULT_CODE_NO_CONNECTION: 3063 case CMP_RESULT_CODE_NO_DNS: 3064 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 3065 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 3066 break; 3067 } 3068 case CMP_RESULT_CODE_REDIRECTED: { 3069 if (DBG) log("CheckMp.onComplete: warm sim"); 3070 String url = getMobileProvisioningUrl(); 3071 if (TextUtils.isEmpty(url)) { 3072 url = getMobileRedirectedProvisioningUrl(); 3073 } 3074 if (TextUtils.isEmpty(url) == false) { 3075 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 3076 setProvNotificationVisible(true, 3077 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3078 url); 3079 } else { 3080 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 3081 } 3082 break; 3083 } 3084 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 3085 String url = getMobileProvisioningUrl(); 3086 if (TextUtils.isEmpty(url) == false) { 3087 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 3088 setProvNotificationVisible(true, 3089 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3090 url); 3091 // Mark that we've got a provisioning network and 3092 // Disable Mobile Data until user actually starts provisioning. 3093 mIsProvisioningNetwork.set(true); 3094 MobileDataStateTracker mdst = (MobileDataStateTracker) 3095 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3096 3097 // Disable radio until user starts provisioning 3098 mdst.setRadio(false); 3099 } else { 3100 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 3101 } 3102 break; 3103 } 3104 case CMP_RESULT_CODE_IS_PROVISIONING: { 3105 // FIXME: Need to know when provisioning is done. Probably we can 3106 // check the completion status if successful we're done if we 3107 // "timedout" or still connected to provisioning APN turn off data? 3108 if (DBG) log("CheckMp.onComplete: provisioning started"); 3109 mIsStartingProvisioning.set(false); 3110 break; 3111 } 3112 default: { 3113 loge("CheckMp.onComplete: ignore unexpected result=" + result); 3114 break; 3115 } 3116 } 3117 mIsCheckingMobileProvisioning.set(false); 3118 } 3119 }; 3120 CheckMp.Params params = 3121 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 3122 if (DBG) log("checkMobileProvisioning: params=" + params); 3123 // TODO: Reenable when calls to the now defunct 3124 // MobileDataStateTracker.isProvisioningNetwork() are removed. 3125 // This code should be moved to the Telephony code. 3126 // checkMp.execute(params); 3127 } finally { 3128 Binder.restoreCallingIdentity(token); 3129 if (DBG) log("checkMobileProvisioning: X"); 3130 } 3131 return timeOutMs; 3132 } 3133 3134 static class CheckMp extends 3135 AsyncTask<CheckMp.Params, Void, Integer> { 3136 private static final String CHECKMP_TAG = "CheckMp"; 3137 3138 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 3139 private static boolean mTestingFailures; 3140 3141 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 3142 private static final int MAX_LOOPS = 4; 3143 3144 // Number of milli-seconds to complete all of the retires 3145 public static final int MAX_TIMEOUT_MS = 60000; 3146 3147 // The socket should retry only 5 seconds, the default is longer 3148 private static final int SOCKET_TIMEOUT_MS = 5000; 3149 3150 // Sleep time for network errors 3151 private static final int NET_ERROR_SLEEP_SEC = 3; 3152 3153 // Sleep time for network route establishment 3154 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 3155 3156 // Short sleep time for polling :( 3157 private static final int POLLING_SLEEP_SEC = 1; 3158 3159 private Context mContext; 3160 private ConnectivityService mCs; 3161 private TelephonyManager mTm; 3162 private Params mParams; 3163 3164 /** 3165 * Parameters for AsyncTask.execute 3166 */ 3167 static class Params { 3168 private String mUrl; 3169 private long mTimeOutMs; 3170 private CallBack mCb; 3171 3172 Params(String url, long timeOutMs, CallBack cb) { 3173 mUrl = url; 3174 mTimeOutMs = timeOutMs; 3175 mCb = cb; 3176 } 3177 3178 @Override 3179 public String toString() { 3180 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 3181 } 3182 } 3183 3184 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 3185 // issued by name or ip address, for Google its by name so when we construct 3186 // this HostnameVerifier we'll pass the original Uri and use it to verify 3187 // the host. If the host name in the original uril fails we'll test the 3188 // hostname parameter just incase things change. 3189 static class CheckMpHostnameVerifier implements HostnameVerifier { 3190 Uri mOrgUri; 3191 3192 CheckMpHostnameVerifier(Uri orgUri) { 3193 mOrgUri = orgUri; 3194 } 3195 3196 @Override 3197 public boolean verify(String hostname, SSLSession session) { 3198 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 3199 String orgUriHost = mOrgUri.getHost(); 3200 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 3201 if (DBG) { 3202 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 3203 + " orgUriHost=" + orgUriHost); 3204 } 3205 return retVal; 3206 } 3207 } 3208 3209 /** 3210 * The call back object passed in Params. onComplete will be called 3211 * on the main thread. 3212 */ 3213 abstract static class CallBack { 3214 // Called on the main thread. 3215 abstract void onComplete(Integer result); 3216 } 3217 3218 public CheckMp(Context context, ConnectivityService cs) { 3219 if (Build.IS_DEBUGGABLE) { 3220 mTestingFailures = 3221 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 3222 } else { 3223 mTestingFailures = false; 3224 } 3225 3226 mContext = context; 3227 mCs = cs; 3228 3229 // Setup access to TelephonyService we'll be using. 3230 mTm = (TelephonyManager) mContext.getSystemService( 3231 Context.TELEPHONY_SERVICE); 3232 } 3233 3234 /** 3235 * Get the default url to use for the test. 3236 */ 3237 public String getDefaultUrl() { 3238 // See http://go/clientsdns for usage approval 3239 String server = Settings.Global.getString(mContext.getContentResolver(), 3240 Settings.Global.CAPTIVE_PORTAL_SERVER); 3241 if (server == null) { 3242 server = "clients3.google.com"; 3243 } 3244 return "http://" + server + "/generate_204"; 3245 } 3246 3247 /** 3248 * Detect if its possible to connect to the http url. DNS based detection techniques 3249 * do not work at all hotspots. The best way to check is to perform a request to 3250 * a known address that fetches the data we expect. 3251 */ 3252 private synchronized Integer isMobileOk(Params params) { 3253 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 3254 Uri orgUri = Uri.parse(params.mUrl); 3255 Random rand = new Random(); 3256 mParams = params; 3257 3258 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 3259 result = CMP_RESULT_CODE_NO_CONNECTION; 3260 log("isMobileOk: X not mobile capable result=" + result); 3261 return result; 3262 } 3263 3264 if (mCs.mIsStartingProvisioning.get()) { 3265 result = CMP_RESULT_CODE_IS_PROVISIONING; 3266 log("isMobileOk: X is provisioning result=" + result); 3267 return result; 3268 } 3269 3270 // See if we've already determined we've got a provisioning connection, 3271 // if so we don't need to do anything active. 3272 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 3273 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3274 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 3275 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 3276 3277 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 3278 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3279 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 3280 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 3281 3282 if (isDefaultProvisioning || isHipriProvisioning) { 3283 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3284 log("isMobileOk: X default || hipri is provisioning result=" + result); 3285 return result; 3286 } 3287 3288 try { 3289 // Continue trying to connect until time has run out 3290 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 3291 3292 if (!mCs.isMobileDataStateTrackerReady()) { 3293 // Wait for MobileDataStateTracker to be ready. 3294 if (DBG) log("isMobileOk: mdst is not ready"); 3295 while(SystemClock.elapsedRealtime() < endTime) { 3296 if (mCs.isMobileDataStateTrackerReady()) { 3297 // Enable fail fast as we'll do retries here and use a 3298 // hipri connection so the default connection stays active. 3299 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 3300 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 3301 break; 3302 } 3303 sleep(POLLING_SLEEP_SEC); 3304 } 3305 } 3306 3307 log("isMobileOk: start hipri url=" + params.mUrl); 3308 3309 // First wait until we can start using hipri 3310 Binder binder = new Binder(); 3311/* 3312 while(SystemClock.elapsedRealtime() < endTime) { 3313 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3314 Phone.FEATURE_ENABLE_HIPRI, binder); 3315 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 3316 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 3317 log("isMobileOk: hipri started"); 3318 break; 3319 } 3320 if (VDBG) log("isMobileOk: hipri not started yet"); 3321 result = CMP_RESULT_CODE_NO_CONNECTION; 3322 sleep(POLLING_SLEEP_SEC); 3323 } 3324*/ 3325 // Continue trying to connect until time has run out 3326 while(SystemClock.elapsedRealtime() < endTime) { 3327 try { 3328 // Wait for hipri to connect. 3329 // TODO: Don't poll and handle situation where hipri fails 3330 // because default is retrying. See b/9569540 3331 NetworkInfo.State state = mCs 3332 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3333 if (state != NetworkInfo.State.CONNECTED) { 3334 if (true/*VDBG*/) { 3335 log("isMobileOk: not connected ni=" + 3336 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3337 } 3338 sleep(POLLING_SLEEP_SEC); 3339 result = CMP_RESULT_CODE_NO_CONNECTION; 3340 continue; 3341 } 3342 3343 // Hipri has started check if this is a provisioning url 3344 MobileDataStateTracker mdst = (MobileDataStateTracker) 3345 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3346 if (mdst.isProvisioningNetwork()) { 3347 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3348 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 3349 return result; 3350 } else { 3351 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 3352 } 3353 3354 // Get of the addresses associated with the url host. We need to use the 3355 // address otherwise HttpURLConnection object will use the name to get 3356 // the addresses and will try every address but that will bypass the 3357 // route to host we setup and the connection could succeed as the default 3358 // interface might be connected to the internet via wifi or other interface. 3359 InetAddress[] addresses; 3360 try { 3361 addresses = InetAddress.getAllByName(orgUri.getHost()); 3362 } catch (UnknownHostException e) { 3363 result = CMP_RESULT_CODE_NO_DNS; 3364 log("isMobileOk: X UnknownHostException result=" + result); 3365 return result; 3366 } 3367 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 3368 3369 // Get the type of addresses supported by this link 3370 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 3371 ConnectivityManager.TYPE_MOBILE_HIPRI); 3372 boolean linkHasIpv4 = lp.hasIPv4Address(); 3373 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 3374 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 3375 + " linkHasIpv6=" + linkHasIpv6); 3376 3377 final ArrayList<InetAddress> validAddresses = 3378 new ArrayList<InetAddress>(addresses.length); 3379 3380 for (InetAddress addr : addresses) { 3381 if (((addr instanceof Inet4Address) && linkHasIpv4) || 3382 ((addr instanceof Inet6Address) && linkHasIpv6)) { 3383 validAddresses.add(addr); 3384 } 3385 } 3386 3387 if (validAddresses.size() == 0) { 3388 return CMP_RESULT_CODE_NO_CONNECTION; 3389 } 3390 3391 int addrTried = 0; 3392 while (true) { 3393 // Loop through at most MAX_LOOPS valid addresses or until 3394 // we run out of time 3395 if (addrTried++ >= MAX_LOOPS) { 3396 log("isMobileOk: too many loops tried - giving up"); 3397 break; 3398 } 3399 if (SystemClock.elapsedRealtime() >= endTime) { 3400 log("isMobileOk: spend too much time - giving up"); 3401 break; 3402 } 3403 3404 InetAddress hostAddr = validAddresses.get(rand.nextInt( 3405 validAddresses.size())); 3406 3407 // Make a route to host so we check the specific interface. 3408 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 3409 hostAddr.getAddress())) { 3410 // Wait a short time to be sure the route is established ?? 3411 log("isMobileOk:" 3412 + " wait to establish route to hostAddr=" + hostAddr); 3413 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 3414 } else { 3415 log("isMobileOk:" 3416 + " could not establish route to hostAddr=" + hostAddr); 3417 // Wait a short time before the next attempt 3418 sleep(NET_ERROR_SLEEP_SEC); 3419 continue; 3420 } 3421 3422 // Rewrite the url to have numeric address to use the specific route 3423 // using http for half the attempts and https for the other half. 3424 // Doing https first and http second as on a redirected walled garden 3425 // such as t-mobile uses we get a SocketTimeoutException: "SSL 3426 // handshake timed out" which we declare as 3427 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 3428 // having http second we will be using logic used for some time. 3429 URL newUrl; 3430 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 3431 newUrl = new URL(scheme, hostAddr.getHostAddress(), 3432 orgUri.getPath()); 3433 log("isMobileOk: newUrl=" + newUrl); 3434 3435 HttpURLConnection urlConn = null; 3436 try { 3437 // Open the connection set the request headers and get the response 3438 urlConn = (HttpURLConnection)newUrl.openConnection( 3439 java.net.Proxy.NO_PROXY); 3440 if (scheme.equals("https")) { 3441 ((HttpsURLConnection)urlConn).setHostnameVerifier( 3442 new CheckMpHostnameVerifier(orgUri)); 3443 } 3444 urlConn.setInstanceFollowRedirects(false); 3445 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 3446 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 3447 urlConn.setUseCaches(false); 3448 urlConn.setAllowUserInteraction(false); 3449 // Set the "Connection" to "Close" as by default "Keep-Alive" 3450 // is used which is useless in this case. 3451 urlConn.setRequestProperty("Connection", "close"); 3452 int responseCode = urlConn.getResponseCode(); 3453 3454 // For debug display the headers 3455 Map<String, List<String>> headers = urlConn.getHeaderFields(); 3456 log("isMobileOk: headers=" + headers); 3457 3458 // Close the connection 3459 urlConn.disconnect(); 3460 urlConn = null; 3461 3462 if (mTestingFailures) { 3463 // Pretend no connection, this tests using http and https 3464 result = CMP_RESULT_CODE_NO_CONNECTION; 3465 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 3466 continue; 3467 } 3468 3469 if (responseCode == 204) { 3470 // Return 3471 result = CMP_RESULT_CODE_CONNECTABLE; 3472 log("isMobileOk: X got expected responseCode=" + responseCode 3473 + " result=" + result); 3474 return result; 3475 } else { 3476 // Retry to be sure this was redirected, we've gotten 3477 // occasions where a server returned 200 even though 3478 // the device didn't have a "warm" sim. 3479 log("isMobileOk: not expected responseCode=" + responseCode); 3480 // TODO - it would be nice in the single-address case to do 3481 // another DNS resolve here, but flushing the cache is a bit 3482 // heavy-handed. 3483 result = CMP_RESULT_CODE_REDIRECTED; 3484 } 3485 } catch (Exception e) { 3486 log("isMobileOk: HttpURLConnection Exception" + e); 3487 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 3488 if (urlConn != null) { 3489 urlConn.disconnect(); 3490 urlConn = null; 3491 } 3492 sleep(NET_ERROR_SLEEP_SEC); 3493 continue; 3494 } 3495 } 3496 log("isMobileOk: X loops|timed out result=" + result); 3497 return result; 3498 } catch (Exception e) { 3499 log("isMobileOk: Exception e=" + e); 3500 continue; 3501 } 3502 } 3503 log("isMobileOk: timed out"); 3504 } finally { 3505 log("isMobileOk: F stop hipri"); 3506 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 3507// mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3508// Phone.FEATURE_ENABLE_HIPRI); 3509 3510 // Wait for hipri to disconnect. 3511 long endTime = SystemClock.elapsedRealtime() + 5000; 3512 3513 while(SystemClock.elapsedRealtime() < endTime) { 3514 NetworkInfo.State state = mCs 3515 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3516 if (state != NetworkInfo.State.DISCONNECTED) { 3517 if (VDBG) { 3518 log("isMobileOk: connected ni=" + 3519 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3520 } 3521 sleep(POLLING_SLEEP_SEC); 3522 continue; 3523 } 3524 } 3525 3526 log("isMobileOk: X result=" + result); 3527 } 3528 return result; 3529 } 3530 3531 @Override 3532 protected Integer doInBackground(Params... params) { 3533 return isMobileOk(params[0]); 3534 } 3535 3536 @Override 3537 protected void onPostExecute(Integer result) { 3538 log("onPostExecute: result=" + result); 3539 if ((mParams != null) && (mParams.mCb != null)) { 3540 mParams.mCb.onComplete(result); 3541 } 3542 } 3543 3544 private String inetAddressesToString(InetAddress[] addresses) { 3545 StringBuffer sb = new StringBuffer(); 3546 boolean firstTime = true; 3547 for(InetAddress addr : addresses) { 3548 if (firstTime) { 3549 firstTime = false; 3550 } else { 3551 sb.append(","); 3552 } 3553 sb.append(addr); 3554 } 3555 return sb.toString(); 3556 } 3557 3558 private void printNetworkInfo() { 3559 boolean hasIccCard = mTm.hasIccCard(); 3560 int simState = mTm.getSimState(); 3561 log("hasIccCard=" + hasIccCard 3562 + " simState=" + simState); 3563 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 3564 if (ni != null) { 3565 log("ni.length=" + ni.length); 3566 for (NetworkInfo netInfo: ni) { 3567 log("netInfo=" + netInfo.toString()); 3568 } 3569 } else { 3570 log("no network info ni=null"); 3571 } 3572 } 3573 3574 /** 3575 * Sleep for a few seconds then return. 3576 * @param seconds 3577 */ 3578 private static void sleep(int seconds) { 3579 long stopTime = System.nanoTime() + (seconds * 1000000000); 3580 long sleepTime; 3581 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 3582 try { 3583 Thread.sleep(sleepTime / 1000000); 3584 } catch (InterruptedException ignored) { 3585 } 3586 } 3587 } 3588 3589 private static void log(String s) { 3590 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 3591 } 3592 } 3593 3594 // TODO: Move to ConnectivityManager and make public? 3595 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 3596 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 3597 3598 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 3599 @Override 3600 public void onReceive(Context context, Intent intent) { 3601 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 3602 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 3603 } 3604 } 3605 }; 3606 3607 private void handleMobileProvisioningAction(String url) { 3608 // Mark notification as not visible 3609 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3610 3611 // Check airplane mode 3612 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 3613 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 3614 // If provisioning network and not in airplane mode handle as a special case, 3615 // otherwise launch browser with the intent directly. 3616 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 3617 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 3618 mIsProvisioningNetwork.set(false); 3619// mIsStartingProvisioning.set(true); 3620// MobileDataStateTracker mdst = (MobileDataStateTracker) 3621// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3622 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 3623// mdst.setRadio(true); 3624// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 3625// mdst.enableMobileProvisioning(url); 3626 } else { 3627 if (DBG) log("handleMobileProvisioningAction: not prov network"); 3628 mIsProvisioningNetwork.set(false); 3629 // Check for apps that can handle provisioning first 3630 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 3631 List<String> carrierPackages = 3632 mTelephonyManager.getCarrierPackageNamesForIntent(provisioningIntent); 3633 if (carrierPackages != null && !carrierPackages.isEmpty()) { 3634 if (carrierPackages.size() != 1) { 3635 if (DBG) log("Multiple matching carrier apps found, launching the first."); 3636 } 3637 provisioningIntent.setPackage(carrierPackages.get(0)); 3638 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3639 Intent.FLAG_ACTIVITY_NEW_TASK); 3640 mContext.startActivity(provisioningIntent); 3641 } else { 3642 // If no apps exist, use standard URL ACTION_VIEW method 3643 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 3644 Intent.CATEGORY_APP_BROWSER); 3645 newIntent.setData(Uri.parse(url)); 3646 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3647 Intent.FLAG_ACTIVITY_NEW_TASK); 3648 try { 3649 mContext.startActivity(newIntent); 3650 } catch (ActivityNotFoundException e) { 3651 loge("handleMobileProvisioningAction: startActivity failed" + e); 3652 } 3653 } 3654 } 3655 } 3656 3657 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3658 private volatile boolean mIsNotificationVisible = false; 3659 3660 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 3661 String url) { 3662 if (DBG) { 3663 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3664 + " extraInfo=" + extraInfo + " url=" + url); 3665 } 3666 Intent intent = null; 3667 PendingIntent pendingIntent = null; 3668 if (visible) { 3669 switch (networkType) { 3670 case ConnectivityManager.TYPE_WIFI: 3671 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3672 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3673 Intent.FLAG_ACTIVITY_NEW_TASK); 3674 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3675 break; 3676 case ConnectivityManager.TYPE_MOBILE: 3677 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3678 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 3679 intent.putExtra("EXTRA_URL", url); 3680 intent.setFlags(0); 3681 pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3682 break; 3683 default: 3684 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3685 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3686 Intent.FLAG_ACTIVITY_NEW_TASK); 3687 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3688 break; 3689 } 3690 } 3691 // Concatenate the range of types onto the range of NetIDs. 3692 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3693 setProvNotificationVisibleIntent(visible, id, networkType, extraInfo, pendingIntent); 3694 } 3695 3696 /** 3697 * Show or hide network provisioning notificaitons. 3698 * 3699 * @param id an identifier that uniquely identifies this notification. This must match 3700 * between show and hide calls. We use the NetID value but for legacy callers 3701 * we concatenate the range of types with the range of NetIDs. 3702 */ 3703 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3704 String extraInfo, PendingIntent intent) { 3705 if (DBG) { 3706 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3707 networkType + " extraInfo=" + extraInfo); 3708 } 3709 3710 Resources r = Resources.getSystem(); 3711 NotificationManager notificationManager = (NotificationManager) mContext 3712 .getSystemService(Context.NOTIFICATION_SERVICE); 3713 3714 if (visible) { 3715 CharSequence title; 3716 CharSequence details; 3717 int icon; 3718 Notification notification = new Notification(); 3719 switch (networkType) { 3720 case ConnectivityManager.TYPE_WIFI: 3721 title = r.getString(R.string.wifi_available_sign_in, 0); 3722 details = r.getString(R.string.network_available_sign_in_detailed, 3723 extraInfo); 3724 icon = R.drawable.stat_notify_wifi_in_range; 3725 break; 3726 case ConnectivityManager.TYPE_MOBILE: 3727 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3728 title = r.getString(R.string.network_available_sign_in, 0); 3729 // TODO: Change this to pull from NetworkInfo once a printable 3730 // name has been added to it 3731 details = mTelephonyManager.getNetworkOperatorName(); 3732 icon = R.drawable.stat_notify_rssi_in_range; 3733 break; 3734 default: 3735 title = r.getString(R.string.network_available_sign_in, 0); 3736 details = r.getString(R.string.network_available_sign_in_detailed, 3737 extraInfo); 3738 icon = R.drawable.stat_notify_rssi_in_range; 3739 break; 3740 } 3741 3742 notification.when = 0; 3743 notification.icon = icon; 3744 notification.flags = Notification.FLAG_AUTO_CANCEL; 3745 notification.tickerText = title; 3746 notification.color = mContext.getResources().getColor( 3747 com.android.internal.R.color.system_notification_accent_color); 3748 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3749 notification.contentIntent = intent; 3750 3751 try { 3752 notificationManager.notify(NOTIFICATION_ID, id, notification); 3753 } catch (NullPointerException npe) { 3754 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3755 npe.printStackTrace(); 3756 } 3757 } else { 3758 try { 3759 notificationManager.cancel(NOTIFICATION_ID, id); 3760 } catch (NullPointerException npe) { 3761 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3762 npe.printStackTrace(); 3763 } 3764 } 3765 mIsNotificationVisible = visible; 3766 } 3767 3768 /** Location to an updatable file listing carrier provisioning urls. 3769 * An example: 3770 * 3771 * <?xml version="1.0" encoding="utf-8"?> 3772 * <provisioningUrls> 3773 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3774 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3775 * </provisioningUrls> 3776 */ 3777 private static final String PROVISIONING_URL_PATH = 3778 "/data/misc/radio/provisioning_urls.xml"; 3779 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3780 3781 /** XML tag for root element. */ 3782 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3783 /** XML tag for individual url */ 3784 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3785 /** XML tag for redirected url */ 3786 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3787 /** XML attribute for mcc */ 3788 private static final String ATTR_MCC = "mcc"; 3789 /** XML attribute for mnc */ 3790 private static final String ATTR_MNC = "mnc"; 3791 3792 private static final int REDIRECTED_PROVISIONING = 1; 3793 private static final int PROVISIONING = 2; 3794 3795 private String getProvisioningUrlBaseFromFile(int type) { 3796 FileReader fileReader = null; 3797 XmlPullParser parser = null; 3798 Configuration config = mContext.getResources().getConfiguration(); 3799 String tagType; 3800 3801 switch (type) { 3802 case PROVISIONING: 3803 tagType = TAG_PROVISIONING_URL; 3804 break; 3805 case REDIRECTED_PROVISIONING: 3806 tagType = TAG_REDIRECTED_URL; 3807 break; 3808 default: 3809 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3810 type); 3811 } 3812 3813 try { 3814 fileReader = new FileReader(mProvisioningUrlFile); 3815 parser = Xml.newPullParser(); 3816 parser.setInput(fileReader); 3817 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3818 3819 while (true) { 3820 XmlUtils.nextElement(parser); 3821 3822 String element = parser.getName(); 3823 if (element == null) break; 3824 3825 if (element.equals(tagType)) { 3826 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3827 try { 3828 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3829 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3830 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3831 parser.next(); 3832 if (parser.getEventType() == XmlPullParser.TEXT) { 3833 return parser.getText(); 3834 } 3835 } 3836 } 3837 } catch (NumberFormatException e) { 3838 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3839 } 3840 } 3841 } 3842 return null; 3843 } catch (FileNotFoundException e) { 3844 loge("Carrier Provisioning Urls file not found"); 3845 } catch (XmlPullParserException e) { 3846 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3847 } catch (IOException e) { 3848 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3849 } finally { 3850 if (fileReader != null) { 3851 try { 3852 fileReader.close(); 3853 } catch (IOException e) {} 3854 } 3855 } 3856 return null; 3857 } 3858 3859 @Override 3860 public String getMobileRedirectedProvisioningUrl() { 3861 enforceConnectivityInternalPermission(); 3862 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3863 if (TextUtils.isEmpty(url)) { 3864 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3865 } 3866 return url; 3867 } 3868 3869 @Override 3870 public String getMobileProvisioningUrl() { 3871 enforceConnectivityInternalPermission(); 3872 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3873 if (TextUtils.isEmpty(url)) { 3874 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3875 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3876 } else { 3877 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3878 } 3879 // populate the iccid, imei and phone number in the provisioning url. 3880 if (!TextUtils.isEmpty(url)) { 3881 String phoneNumber = mTelephonyManager.getLine1Number(); 3882 if (TextUtils.isEmpty(phoneNumber)) { 3883 phoneNumber = "0000000000"; 3884 } 3885 url = String.format(url, 3886 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3887 mTelephonyManager.getDeviceId() /* IMEI */, 3888 phoneNumber /* Phone numer */); 3889 } 3890 3891 return url; 3892 } 3893 3894 @Override 3895 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3896 String extraInfo, String url) { 3897 enforceConnectivityInternalPermission(); 3898 setProvNotificationVisible(visible, networkType, extraInfo, url); 3899 } 3900 3901 @Override 3902 public void setAirplaneMode(boolean enable) { 3903 enforceConnectivityInternalPermission(); 3904 final long ident = Binder.clearCallingIdentity(); 3905 try { 3906 final ContentResolver cr = mContext.getContentResolver(); 3907 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3908 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3909 intent.putExtra("state", enable); 3910 mContext.sendBroadcast(intent); 3911 } finally { 3912 Binder.restoreCallingIdentity(ident); 3913 } 3914 } 3915 3916 private void onUserStart(int userId) { 3917 synchronized(mVpns) { 3918 Vpn userVpn = mVpns.get(userId); 3919 if (userVpn != null) { 3920 loge("Starting user already has a VPN"); 3921 return; 3922 } 3923 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3924 mVpns.put(userId, userVpn); 3925 } 3926 } 3927 3928 private void onUserStop(int userId) { 3929 synchronized(mVpns) { 3930 Vpn userVpn = mVpns.get(userId); 3931 if (userVpn == null) { 3932 loge("Stopping user has no VPN"); 3933 return; 3934 } 3935 mVpns.delete(userId); 3936 } 3937 } 3938 3939 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3940 @Override 3941 public void onReceive(Context context, Intent intent) { 3942 final String action = intent.getAction(); 3943 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3944 if (userId == UserHandle.USER_NULL) return; 3945 3946 if (Intent.ACTION_USER_STARTING.equals(action)) { 3947 onUserStart(userId); 3948 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3949 onUserStop(userId); 3950 } 3951 } 3952 }; 3953 3954 @Override 3955 public LinkQualityInfo getLinkQualityInfo(int networkType) { 3956 enforceAccessPermission(); 3957 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3958 return mNetTrackers[networkType].getLinkQualityInfo(); 3959 } else { 3960 return null; 3961 } 3962 } 3963 3964 @Override 3965 public LinkQualityInfo getActiveLinkQualityInfo() { 3966 enforceAccessPermission(); 3967 if (isNetworkTypeValid(mActiveDefaultNetwork) && 3968 mNetTrackers[mActiveDefaultNetwork] != null) { 3969 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 3970 } else { 3971 return null; 3972 } 3973 } 3974 3975 @Override 3976 public LinkQualityInfo[] getAllLinkQualityInfo() { 3977 enforceAccessPermission(); 3978 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 3979 for (NetworkStateTracker tracker : mNetTrackers) { 3980 if (tracker != null) { 3981 LinkQualityInfo li = tracker.getLinkQualityInfo(); 3982 if (li != null) { 3983 result.add(li); 3984 } 3985 } 3986 } 3987 3988 return result.toArray(new LinkQualityInfo[result.size()]); 3989 } 3990 3991 /* Infrastructure for network sampling */ 3992 3993 private void handleNetworkSamplingTimeout() { 3994 3995 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3996 3997 // initialize list of interfaces .. 3998 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3999 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 4000 for (NetworkStateTracker tracker : mNetTrackers) { 4001 if (tracker != null) { 4002 String ifaceName = tracker.getNetworkInterfaceName(); 4003 if (ifaceName != null) { 4004 mapIfaceToSample.put(ifaceName, null); 4005 } 4006 } 4007 } 4008 4009 // Read samples for all interfaces 4010 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4011 4012 // process samples for all networks 4013 for (NetworkStateTracker tracker : mNetTrackers) { 4014 if (tracker != null) { 4015 String ifaceName = tracker.getNetworkInterfaceName(); 4016 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 4017 if (ss != null) { 4018 // end the previous sampling cycle 4019 tracker.stopSampling(ss); 4020 // start a new sampling cycle .. 4021 tracker.startSampling(ss); 4022 } 4023 } 4024 } 4025 4026 if (SAMPLE_DBG) log("Done."); 4027 4028 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 4029 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 4030 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 4031 4032 if (SAMPLE_DBG) { 4033 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 4034 } 4035 4036 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 4037 } 4038 4039 /** 4040 * Sets a network sampling alarm. 4041 */ 4042 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 4043 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 4044 int alarmType; 4045 if (Resources.getSystem().getBoolean( 4046 R.bool.config_networkSamplingWakesDevice)) { 4047 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 4048 } else { 4049 alarmType = AlarmManager.ELAPSED_REALTIME; 4050 } 4051 mAlarmManager.set(alarmType, wakeupTime, intent); 4052 } 4053 4054 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 4055 new HashMap<Messenger, NetworkFactoryInfo>(); 4056 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 4057 new HashMap<NetworkRequest, NetworkRequestInfo>(); 4058 4059 private static class NetworkFactoryInfo { 4060 public final String name; 4061 public final Messenger messenger; 4062 public final AsyncChannel asyncChannel; 4063 4064 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 4065 this.name = name; 4066 this.messenger = messenger; 4067 this.asyncChannel = asyncChannel; 4068 } 4069 } 4070 4071 /** 4072 * Tracks info about the requester. 4073 * Also used to notice when the calling process dies so we can self-expire 4074 */ 4075 private class NetworkRequestInfo implements IBinder.DeathRecipient { 4076 static final boolean REQUEST = true; 4077 static final boolean LISTEN = false; 4078 4079 final NetworkRequest request; 4080 IBinder mBinder; 4081 final int mPid; 4082 final int mUid; 4083 final Messenger messenger; 4084 final boolean isRequest; 4085 4086 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 4087 super(); 4088 messenger = m; 4089 request = r; 4090 mBinder = binder; 4091 mPid = getCallingPid(); 4092 mUid = getCallingUid(); 4093 this.isRequest = isRequest; 4094 4095 try { 4096 mBinder.linkToDeath(this, 0); 4097 } catch (RemoteException e) { 4098 binderDied(); 4099 } 4100 } 4101 4102 void unlinkDeathRecipient() { 4103 mBinder.unlinkToDeath(this, 0); 4104 } 4105 4106 public void binderDied() { 4107 log("ConnectivityService NetworkRequestInfo binderDied(" + 4108 request + ", " + mBinder + ")"); 4109 releaseNetworkRequest(request); 4110 } 4111 4112 public String toString() { 4113 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 4114 mPid + " for " + request; 4115 } 4116 } 4117 4118 @Override 4119 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 4120 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 4121 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 4122 == false) { 4123 enforceConnectivityInternalPermission(); 4124 } else { 4125 enforceChangePermission(); 4126 } 4127 4128 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4129 4130 // if UID is restricted, don't allow them to bring up metered APNs 4131 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 4132 == false) { 4133 final int uidRules; 4134 synchronized(mRulesLock) { 4135 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 4136 } 4137 if ((uidRules & RULE_REJECT_METERED) != 0) { 4138 // we could silently fail or we can filter the available nets to only give 4139 // them those they have access to. Chose the more useful 4140 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 4141 } 4142 } 4143 4144 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 4145 throw new IllegalArgumentException("Bad timeout specified"); 4146 } 4147 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 4148 nextNetworkRequestId()); 4149 if (DBG) log("requestNetwork for " + networkRequest); 4150 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4151 NetworkRequestInfo.REQUEST); 4152 4153 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 4154 if (timeoutMs > 0) { 4155 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 4156 nri), timeoutMs); 4157 } 4158 return networkRequest; 4159 } 4160 4161 @Override 4162 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4163 PendingIntent operation) { 4164 // TODO 4165 return null; 4166 } 4167 4168 @Override 4169 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4170 Messenger messenger, IBinder binder) { 4171 enforceAccessPermission(); 4172 4173 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 4174 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4175 if (DBG) log("listenForNetwork for " + networkRequest); 4176 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4177 NetworkRequestInfo.LISTEN); 4178 4179 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4180 return networkRequest; 4181 } 4182 4183 @Override 4184 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4185 PendingIntent operation) { 4186 } 4187 4188 @Override 4189 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4190 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4191 0, networkRequest)); 4192 } 4193 4194 @Override 4195 public void registerNetworkFactory(Messenger messenger, String name) { 4196 enforceConnectivityInternalPermission(); 4197 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4198 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4199 } 4200 4201 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4202 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4203 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4204 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4205 } 4206 4207 @Override 4208 public void unregisterNetworkFactory(Messenger messenger) { 4209 enforceConnectivityInternalPermission(); 4210 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4211 } 4212 4213 private void handleUnregisterNetworkFactory(Messenger messenger) { 4214 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4215 if (nfi == null) { 4216 loge("Failed to find Messenger in unregisterNetworkFactory"); 4217 return; 4218 } 4219 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4220 } 4221 4222 /** 4223 * NetworkAgentInfo supporting a request by requestId. 4224 * These have already been vetted (their Capabilities satisfy the request) 4225 * and the are the highest scored network available. 4226 * the are keyed off the Requests requestId. 4227 */ 4228 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4229 new SparseArray<NetworkAgentInfo>(); 4230 4231 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4232 new SparseArray<NetworkAgentInfo>(); 4233 4234 // NetworkAgentInfo keyed off its connecting messenger 4235 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4236 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4237 new HashMap<Messenger, NetworkAgentInfo>(); 4238 4239 private final NetworkRequest mDefaultRequest; 4240 4241 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4242 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 4243 } 4244 4245 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4246 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4247 int currentScore, NetworkMisc networkMisc) { 4248 enforceConnectivityInternalPermission(); 4249 4250 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4251 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 4252 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 4253 networkMisc); 4254 synchronized (this) { 4255 nai.networkMonitor.systemReady = mSystemReady; 4256 } 4257 if (DBG) log("registerNetworkAgent " + nai); 4258 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4259 } 4260 4261 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4262 if (VDBG) log("Got NetworkAgent Messenger"); 4263 mNetworkAgentInfos.put(na.messenger, na); 4264 assignNextNetId(na); 4265 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4266 NetworkInfo networkInfo = na.networkInfo; 4267 na.networkInfo = null; 4268 updateNetworkInfo(na, networkInfo); 4269 } 4270 4271 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4272 LinkProperties newLp = networkAgent.linkProperties; 4273 int netId = networkAgent.network.netId; 4274 4275 updateInterfaces(newLp, oldLp, netId); 4276 updateMtu(newLp, oldLp); 4277 updateTcpBufferSizes(networkAgent); 4278 // TODO - figure out what to do for clat 4279// for (LinkProperties lp : newLp.getStackedLinks()) { 4280// updateMtu(lp, null); 4281// } 4282 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 4283 updateDnses(newLp, oldLp, netId, flushDns); 4284 updateClat(newLp, oldLp, networkAgent); 4285 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 4286 } 4287 4288 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 4289 // Update 464xlat state. 4290 if (mClat.requiresClat(na)) { 4291 4292 // If the connection was previously using clat, but is not using it now, stop the clat 4293 // daemon. Normally, this happens automatically when the connection disconnects, but if 4294 // the disconnect is not reported, or if the connection's LinkProperties changed for 4295 // some other reason (e.g., handoff changes the IP addresses on the link), it would 4296 // still be running. If it's not running, then stopping it is a no-op. 4297 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 4298 mClat.stopClat(); 4299 } 4300 // If the link requires clat to be running, then start the daemon now. 4301 if (na.networkInfo.isConnected()) { 4302 mClat.startClat(na); 4303 } else { 4304 mClat.stopClat(); 4305 } 4306 } 4307 } 4308 4309 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4310 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4311 if (oldLp != null) { 4312 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4313 } else if (newLp != null) { 4314 interfaceDiff.added = newLp.getAllInterfaceNames(); 4315 } 4316 for (String iface : interfaceDiff.added) { 4317 try { 4318 if (DBG) log("Adding iface " + iface + " to network " + netId); 4319 mNetd.addInterfaceToNetwork(iface, netId); 4320 } catch (Exception e) { 4321 loge("Exception adding interface: " + e); 4322 } 4323 } 4324 for (String iface : interfaceDiff.removed) { 4325 try { 4326 if (DBG) log("Removing iface " + iface + " from network " + netId); 4327 mNetd.removeInterfaceFromNetwork(iface, netId); 4328 } catch (Exception e) { 4329 loge("Exception removing interface: " + e); 4330 } 4331 } 4332 } 4333 4334 /** 4335 * Have netd update routes from oldLp to newLp. 4336 * @return true if routes changed between oldLp and newLp 4337 */ 4338 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4339 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4340 if (oldLp != null) { 4341 routeDiff = oldLp.compareAllRoutes(newLp); 4342 } else if (newLp != null) { 4343 routeDiff.added = newLp.getAllRoutes(); 4344 } 4345 4346 // add routes before removing old in case it helps with continuous connectivity 4347 4348 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4349 for (RouteInfo route : routeDiff.added) { 4350 if (route.hasGateway()) continue; 4351 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4352 try { 4353 mNetd.addRoute(netId, route); 4354 } catch (Exception e) { 4355 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4356 loge("Exception in addRoute for non-gateway: " + e); 4357 } 4358 } 4359 } 4360 for (RouteInfo route : routeDiff.added) { 4361 if (route.hasGateway() == false) continue; 4362 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4363 try { 4364 mNetd.addRoute(netId, route); 4365 } catch (Exception e) { 4366 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4367 loge("Exception in addRoute for gateway: " + e); 4368 } 4369 } 4370 } 4371 4372 for (RouteInfo route : routeDiff.removed) { 4373 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4374 try { 4375 mNetd.removeRoute(netId, route); 4376 } catch (Exception e) { 4377 loge("Exception in removeRoute: " + e); 4378 } 4379 } 4380 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4381 } 4382 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) { 4383 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4384 Collection<InetAddress> dnses = newLp.getDnsServers(); 4385 if (dnses.size() == 0 && mDefaultDns != null) { 4386 dnses = new ArrayList(); 4387 dnses.add(mDefaultDns); 4388 if (DBG) { 4389 loge("no dns provided for netId " + netId + ", so using defaults"); 4390 } 4391 } 4392 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4393 try { 4394 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4395 newLp.getDomains()); 4396 } catch (Exception e) { 4397 loge("Exception in setDnsServersForNetwork: " + e); 4398 } 4399 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4400 if (defaultNai != null && defaultNai.network.netId == netId) { 4401 setDefaultDnsSystemProperties(dnses); 4402 } 4403 flushVmDnsCache(); 4404 } else if (flush) { 4405 try { 4406 mNetd.flushNetworkDnsCache(netId); 4407 } catch (Exception e) { 4408 loge("Exception in flushNetworkDnsCache: " + e); 4409 } 4410 flushVmDnsCache(); 4411 } 4412 } 4413 4414 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4415 int last = 0; 4416 for (InetAddress dns : dnses) { 4417 ++last; 4418 String key = "net.dns" + last; 4419 String value = dns.getHostAddress(); 4420 SystemProperties.set(key, value); 4421 } 4422 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4423 String key = "net.dns" + i; 4424 SystemProperties.set(key, ""); 4425 } 4426 mNumDnsEntries = last; 4427 } 4428 4429 4430 private void updateCapabilities(NetworkAgentInfo networkAgent, 4431 NetworkCapabilities networkCapabilities) { 4432 // TODO - what else here? Verify still satisfies everybody? 4433 // Check if satisfies somebody new? call callbacks? 4434 synchronized (networkAgent) { 4435 networkAgent.networkCapabilities = networkCapabilities; 4436 } 4437 } 4438 4439 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4440 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4441 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4442 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4443 networkRequest); 4444 } 4445 } 4446 4447 private void callCallbackForRequest(NetworkRequestInfo nri, 4448 NetworkAgentInfo networkAgent, int notificationType) { 4449 if (nri.messenger == null) return; // Default request has no msgr 4450 Object o; 4451 int a1 = 0; 4452 int a2 = 0; 4453 switch (notificationType) { 4454 case ConnectivityManager.CALLBACK_LOSING: 4455 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 4456 // fall through 4457 case ConnectivityManager.CALLBACK_PRECHECK: 4458 case ConnectivityManager.CALLBACK_AVAILABLE: 4459 case ConnectivityManager.CALLBACK_LOST: 4460 case ConnectivityManager.CALLBACK_CAP_CHANGED: 4461 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4462 o = new NetworkRequest(nri.request); 4463 a2 = networkAgent.network.netId; 4464 break; 4465 } 4466 case ConnectivityManager.CALLBACK_UNAVAIL: 4467 case ConnectivityManager.CALLBACK_RELEASED: { 4468 o = new NetworkRequest(nri.request); 4469 break; 4470 } 4471 default: { 4472 loge("Unknown notificationType " + notificationType); 4473 return; 4474 } 4475 } 4476 Message msg = Message.obtain(); 4477 msg.arg1 = a1; 4478 msg.arg2 = a2; 4479 msg.obj = o; 4480 msg.what = notificationType; 4481 try { 4482 if (VDBG) { 4483 log("sending notification " + notifyTypeToName(notificationType) + 4484 " for " + nri.request); 4485 } 4486 nri.messenger.send(msg); 4487 } catch (RemoteException e) { 4488 // may occur naturally in the race of binder death. 4489 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4490 } 4491 } 4492 4493 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4494 if (oldNetwork == null) { 4495 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4496 return; 4497 } 4498 if (DBG) { 4499 log("handleLingerComplete for " + oldNetwork.name()); 4500 for (int i = 0; i < oldNetwork.networkRequests.size(); i++) { 4501 NetworkRequest nr = oldNetwork.networkRequests.valueAt(i); 4502 // Ignore listening requests. 4503 if (mNetworkRequests.get(nr).isRequest == false) continue; 4504 loge("Dead network still had at least " + nr); 4505 break; 4506 } 4507 } 4508 oldNetwork.asyncChannel.disconnect(); 4509 } 4510 4511 private void makeDefault(NetworkAgentInfo newNetwork) { 4512 if (DBG) log("Switching to new default network: " + newNetwork); 4513 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4514 setupDataActivityTracking(newNetwork); 4515 try { 4516 mNetd.setDefaultNetId(newNetwork.network.netId); 4517 } catch (Exception e) { 4518 loge("Exception setting default network :" + e); 4519 } 4520 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4521 updateTcpBufferSizes(newNetwork); 4522 } 4523 4524 // Handles a network appearing or improving its score. 4525 // 4526 // - Evaluates all current NetworkRequests that can be 4527 // satisfied by newNetwork, and reassigns to newNetwork 4528 // any such requests for which newNetwork is the best. 4529 // 4530 // - Tears down any Networks that as a result are no longer 4531 // needed. A network is needed if it is the best network for 4532 // one or more NetworkRequests, or if it is a VPN. 4533 // 4534 // - Tears down newNetwork if it is validated but turns out to be 4535 // unneeded. Does not tear down newNetwork if it is 4536 // unvalidated, because future validation may improve 4537 // newNetwork's score enough that it is needed. 4538 // 4539 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4540 // it does not remove NetworkRequests that other Networks could better satisfy. 4541 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4542 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4543 // as it performs better by a factor of the number of Networks. 4544 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork) { 4545 boolean keep = newNetwork.isVPN(); 4546 boolean isNewDefault = false; 4547 if (DBG) log("rematching " + newNetwork.name()); 4548 // Find and migrate to this Network any NetworkRequests for 4549 // which this network is now the best. 4550 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4551 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4552 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4553 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4554 if (newNetwork == currentNetwork) { 4555 if (DBG) log("Network " + newNetwork.name() + " was already satisfying" + 4556 " request " + nri.request.requestId + ". No change."); 4557 keep = true; 4558 continue; 4559 } 4560 4561 // check if it satisfies the NetworkCapabilities 4562 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4563 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 4564 newNetwork.networkCapabilities)) { 4565 if (!nri.isRequest) { 4566 // This is not a request, it's a callback listener. 4567 // Add it to newNetwork regardless of score. 4568 newNetwork.addRequest(nri.request); 4569 continue; 4570 } 4571 4572 // next check if it's better than any current network we're using for 4573 // this request 4574 if (VDBG) { 4575 log("currentScore = " + 4576 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4577 ", newScore = " + newNetwork.getCurrentScore()); 4578 } 4579 if (currentNetwork == null || 4580 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4581 if (currentNetwork != null) { 4582 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4583 currentNetwork.networkRequests.remove(nri.request.requestId); 4584 currentNetwork.networkLingered.add(nri.request); 4585 affectedNetworks.add(currentNetwork); 4586 } else { 4587 if (DBG) log(" accepting network in place of null"); 4588 } 4589 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4590 newNetwork.addRequest(nri.request); 4591 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4592 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4593 } 4594 keep = true; 4595 // Tell NetworkFactories about the new score, so they can stop 4596 // trying to connect if they know they cannot match it. 4597 // TODO - this could get expensive if we have alot of requests for this 4598 // network. Think about if there is a way to reduce this. Push 4599 // netid->request mapping to each factory? 4600 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4601 if (mDefaultRequest.requestId == nri.request.requestId) { 4602 isNewDefault = true; 4603 // TODO: Remove following line. It's redundant with makeDefault call. 4604 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4605 if (newNetwork.linkProperties != null) { 4606 updateTcpBufferSizes(newNetwork); 4607 setDefaultDnsSystemProperties( 4608 newNetwork.linkProperties.getDnsServers()); 4609 } else { 4610 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4611 } 4612 // Maintain the illusion: since the legacy API only 4613 // understands one network at a time, we must pretend 4614 // that the current default network disconnected before 4615 // the new one connected. 4616 if (currentNetwork != null) { 4617 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4618 currentNetwork); 4619 } 4620 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4621 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4622 } 4623 } 4624 } 4625 } 4626 // Linger any networks that are no longer needed. 4627 for (NetworkAgentInfo nai : affectedNetworks) { 4628 boolean teardown = !nai.isVPN(); 4629 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4630 NetworkRequest nr = nai.networkRequests.valueAt(i); 4631 try { 4632 if (mNetworkRequests.get(nr).isRequest) { 4633 teardown = false; 4634 } 4635 } catch (Exception e) { 4636 loge("Request " + nr + " not found in mNetworkRequests."); 4637 loge(" it came from request list of " + nai.name()); 4638 } 4639 } 4640 if (teardown) { 4641 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4642 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4643 } else { 4644 // not going to linger, so kill the list of linger networks.. only 4645 // notify them of linger if it happens as the result of gaining another, 4646 // but if they transition and old network stays up, don't tell them of linger 4647 // or very delayed loss 4648 nai.networkLingered.clear(); 4649 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 4650 } 4651 } 4652 if (keep) { 4653 if (isNewDefault) { 4654 // Notify system services that this network is up. 4655 makeDefault(newNetwork); 4656 synchronized (ConnectivityService.this) { 4657 // have a new default network, release the transition wakelock in 4658 // a second if it's held. The second pause is to allow apps 4659 // to reconnect over the new network 4660 if (mNetTransitionWakeLock.isHeld()) { 4661 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4662 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4663 mNetTransitionWakeLockSerialNumber, 0), 4664 1000); 4665 } 4666 } 4667 } 4668 4669 // Notify battery stats service about this network, both the normal 4670 // interface and any stacked links. 4671 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4672 try { 4673 final IBatteryStats bs = BatteryStatsService.getService(); 4674 final int type = newNetwork.networkInfo.getType(); 4675 4676 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4677 bs.noteNetworkInterfaceType(baseIface, type); 4678 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4679 final String stackedIface = stacked.getInterfaceName(); 4680 bs.noteNetworkInterfaceType(stackedIface, type); 4681 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4682 } 4683 } catch (RemoteException ignored) { 4684 } 4685 4686 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4687 } else if (newNetwork.validated) { 4688 // Only tear down validated networks here. Leave unvalidated to either become 4689 // validated (and get evaluated against peers, one losing here) or 4690 // NetworkMonitor reports a bad network and we tear it down then. 4691 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 4692 // satisfy no NetworkRequests. 4693 if (DBG && newNetwork.networkRequests.size() != 0) { 4694 loge("tearing down network with live requests:"); 4695 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 4696 loge(" " + newNetwork.networkRequests.valueAt(i)); 4697 } 4698 } 4699 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4700 newNetwork.asyncChannel.disconnect(); 4701 } 4702 } 4703 4704 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4705 // being disconnected. 4706 // If only one Network's score or capabilities have been modified since the last time 4707 // this function was called, pass this Network in via the "changed" arugment, otherwise 4708 // pass null. 4709 // If only one Network has been changed but its NetworkCapabilities have not changed, 4710 // pass in the Network's score (from getCurrentScore()) prior to the change via 4711 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4712 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4713 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4714 // to avoid the slowness. It is not simply enough to process just "changed", for 4715 // example in the case where "changed"'s score decreases and another network should begin 4716 // satifying a NetworkRequest that "changed" currently satisfies. 4717 4718 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4719 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4720 // rematchNetworkAndRequests() handles. 4721 if (changed != null && oldScore < changed.getCurrentScore()) { 4722 rematchNetworkAndRequests(changed); 4723 } else { 4724 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4725 rematchNetworkAndRequests(nai); 4726 } 4727 } 4728 } 4729 4730 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4731 // Don't bother updating until we've graduated to validated at least once. 4732 if (!nai.validated) return; 4733 // For now only update icons for default connection. 4734 // TODO: Update WiFi and cellular icons separately. b/17237507 4735 if (!isDefaultNetwork(nai)) return; 4736 4737 int newInetCondition = valid ? 100 : 0; 4738 // Don't repeat publish. 4739 if (newInetCondition == mDefaultInetConditionPublished) return; 4740 4741 mDefaultInetConditionPublished = newInetCondition; 4742 sendInetConditionBroadcast(nai.networkInfo); 4743 } 4744 4745 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4746 NetworkInfo.State state = newInfo.getState(); 4747 NetworkInfo oldInfo = null; 4748 synchronized (networkAgent) { 4749 oldInfo = networkAgent.networkInfo; 4750 networkAgent.networkInfo = newInfo; 4751 } 4752 if (networkAgent.isVPN() && mLockdownTracker != null) { 4753 mLockdownTracker.onVpnStateChanged(newInfo); 4754 } 4755 4756 if (oldInfo != null && oldInfo.getState() == state) { 4757 if (VDBG) log("ignoring duplicate network state non-change"); 4758 return; 4759 } 4760 if (DBG) { 4761 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4762 (oldInfo == null ? "null" : oldInfo.getState()) + 4763 " to " + state); 4764 } 4765 4766 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4767 try { 4768 // This should never fail. Specifying an already in use NetID will cause failure. 4769 if (networkAgent.isVPN()) { 4770 mNetd.createVirtualNetwork(networkAgent.network.netId, 4771 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4772 (networkAgent.networkMisc == null || 4773 !networkAgent.networkMisc.allowBypass)); 4774 } else { 4775 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4776 } 4777 } catch (Exception e) { 4778 loge("Error creating network " + networkAgent.network.netId + ": " 4779 + e.getMessage()); 4780 return; 4781 } 4782 networkAgent.created = true; 4783 updateLinkProperties(networkAgent, null); 4784 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4785 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4786 if (networkAgent.isVPN()) { 4787 // Temporarily disable the default proxy (not global). 4788 synchronized (mProxyLock) { 4789 if (!mDefaultProxyDisabled) { 4790 mDefaultProxyDisabled = true; 4791 if (mGlobalProxy == null && mDefaultProxy != null) { 4792 sendProxyBroadcast(null); 4793 } 4794 } 4795 } 4796 // TODO: support proxy per network. 4797 } 4798 // Consider network even though it is not yet validated. 4799 // TODO: All the if-statement conditions can be removed now that validation only confers 4800 // a score increase. 4801 if (mNetworkForRequestId.get(mDefaultRequest.requestId) == null && 4802 networkAgent.isVPN() == false && 4803 mDefaultRequest.networkCapabilities.satisfiedByNetworkCapabilities( 4804 networkAgent.networkCapabilities)) { 4805 rematchNetworkAndRequests(networkAgent); 4806 } 4807 } else if (state == NetworkInfo.State.DISCONNECTED || 4808 state == NetworkInfo.State.SUSPENDED) { 4809 networkAgent.asyncChannel.disconnect(); 4810 if (networkAgent.isVPN()) { 4811 synchronized (mProxyLock) { 4812 if (mDefaultProxyDisabled) { 4813 mDefaultProxyDisabled = false; 4814 if (mGlobalProxy == null && mDefaultProxy != null) { 4815 sendProxyBroadcast(mDefaultProxy); 4816 } 4817 } 4818 } 4819 } 4820 } 4821 } 4822 4823 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4824 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4825 if (score < 0) { 4826 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4827 "). Bumping score to min of 0"); 4828 score = 0; 4829 } 4830 4831 final int oldScore = nai.getCurrentScore(); 4832 nai.setCurrentScore(score); 4833 4834 if (nai.created) rematchAllNetworksAndRequests(nai, oldScore); 4835 4836 for (int i = 0; i < nai.networkRequests.size(); i++) { 4837 NetworkRequest nr = nai.networkRequests.valueAt(i); 4838 // Don't send listening requests to factories. b/17393458 4839 if (mNetworkRequests.get(nr).isRequest == false) continue; 4840 sendUpdatedScoreToFactories(nr, score); 4841 } 4842 } 4843 4844 // notify only this one new request of the current state 4845 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4846 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4847 // TODO - read state from monitor to decide what to send. 4848// if (nai.networkMonitor.isLingering()) { 4849// notifyType = NetworkCallbacks.LOSING; 4850// } else if (nai.networkMonitor.isEvaluating()) { 4851// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4852// } 4853 callCallbackForRequest(nri, nai, notifyType); 4854 } 4855 4856 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4857 // The NetworkInfo we actually send out has no bearing on the real 4858 // state of affairs. For example, if the default connection is mobile, 4859 // and a request for HIPRI has just gone away, we need to pretend that 4860 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4861 // the state to DISCONNECTED, even though the network is of type MOBILE 4862 // and is still connected. 4863 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4864 info.setType(type); 4865 if (connected) { 4866 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4867 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4868 } else { 4869 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4870 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4871 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4872 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4873 if (info.isFailover()) { 4874 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4875 nai.networkInfo.setFailover(false); 4876 } 4877 if (info.getReason() != null) { 4878 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4879 } 4880 if (info.getExtraInfo() != null) { 4881 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4882 } 4883 NetworkAgentInfo newDefaultAgent = null; 4884 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4885 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4886 if (newDefaultAgent != null) { 4887 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4888 newDefaultAgent.networkInfo); 4889 } else { 4890 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4891 } 4892 } 4893 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4894 mDefaultInetConditionPublished); 4895 final Intent immediateIntent = new Intent(intent); 4896 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4897 sendStickyBroadcast(immediateIntent); 4898 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4899 if (newDefaultAgent != null) { 4900 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4901 getConnectivityChangeDelay()); 4902 } 4903 } 4904 } 4905 4906 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4907 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4908 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4909 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4910 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4911 if (VDBG) log(" sending notification for " + nr); 4912 callCallbackForRequest(nri, networkAgent, notifyType); 4913 } 4914 } 4915 4916 private String notifyTypeToName(int notifyType) { 4917 switch (notifyType) { 4918 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4919 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4920 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4921 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4922 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4923 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4924 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4925 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4926 } 4927 return "UNKNOWN"; 4928 } 4929 4930 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 4931 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4932 if (nai != null) { 4933 synchronized (nai) { 4934 return new LinkProperties(nai.linkProperties); 4935 } 4936 } 4937 return new LinkProperties(); 4938 } 4939 4940 private NetworkInfo getNetworkInfoForType(int networkType) { 4941 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 4942 return null; 4943 4944 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4945 if (nai != null) { 4946 NetworkInfo result = new NetworkInfo(nai.networkInfo); 4947 result.setType(networkType); 4948 return result; 4949 } else { 4950 NetworkInfo result = new NetworkInfo( 4951 networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), ""); 4952 result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 4953 return result; 4954 } 4955 } 4956 4957 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 4958 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4959 if (nai != null) { 4960 synchronized (nai) { 4961 return new NetworkCapabilities(nai.networkCapabilities); 4962 } 4963 } 4964 return new NetworkCapabilities(); 4965 } 4966 4967 @Override 4968 public boolean addVpnAddress(String address, int prefixLength) { 4969 throwIfLockdownEnabled(); 4970 int user = UserHandle.getUserId(Binder.getCallingUid()); 4971 synchronized (mVpns) { 4972 return mVpns.get(user).addAddress(address, prefixLength); 4973 } 4974 } 4975 4976 @Override 4977 public boolean removeVpnAddress(String address, int prefixLength) { 4978 throwIfLockdownEnabled(); 4979 int user = UserHandle.getUserId(Binder.getCallingUid()); 4980 synchronized (mVpns) { 4981 return mVpns.get(user).removeAddress(address, prefixLength); 4982 } 4983 } 4984} 4985