ConnectivityService.java revision 2161a8ea123134ee3f9a10c0f8f56aabd8289f69
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 final NetworkAgentInfo officialNai; 1789 synchronized (mNetworkForNetId) { 1790 officialNai = mNetworkForNetId.get(nai.network.netId); 1791 } 1792 if (officialNai != null && officialNai.equals(nai)) return true; 1793 if (officialNai != null || VDBG) { 1794 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1795 " - " + nai); 1796 } 1797 return false; 1798 } 1799 1800 // must be stateless - things change under us. 1801 private class NetworkStateTrackerHandler extends Handler { 1802 public NetworkStateTrackerHandler(Looper looper) { 1803 super(looper); 1804 } 1805 1806 @Override 1807 public void handleMessage(Message msg) { 1808 NetworkInfo info; 1809 switch (msg.what) { 1810 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1811 handleAsyncChannelHalfConnect(msg); 1812 break; 1813 } 1814 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1815 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1816 if (nai != null) nai.asyncChannel.disconnect(); 1817 break; 1818 } 1819 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1820 handleAsyncChannelDisconnected(msg); 1821 break; 1822 } 1823 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1824 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1825 if (nai == null) { 1826 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1827 } else { 1828 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1829 } 1830 break; 1831 } 1832 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1833 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1834 if (nai == null) { 1835 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1836 } else { 1837 if (VDBG) { 1838 log("Update of LinkProperties for " + nai.name() + 1839 "; created=" + nai.created); 1840 } 1841 LinkProperties oldLp = nai.linkProperties; 1842 synchronized (nai) { 1843 nai.linkProperties = (LinkProperties)msg.obj; 1844 } 1845 if (nai.created) updateLinkProperties(nai, oldLp); 1846 } 1847 break; 1848 } 1849 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1850 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1851 if (nai == null) { 1852 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1853 break; 1854 } 1855 info = (NetworkInfo) msg.obj; 1856 updateNetworkInfo(nai, info); 1857 break; 1858 } 1859 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1860 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1861 if (nai == null) { 1862 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1863 break; 1864 } 1865 Integer score = (Integer) msg.obj; 1866 if (score != null) updateNetworkScore(nai, score.intValue()); 1867 break; 1868 } 1869 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1870 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1871 if (nai == null) { 1872 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1873 break; 1874 } 1875 try { 1876 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1877 } catch (Exception e) { 1878 // Never crash! 1879 loge("Exception in addVpnUidRanges: " + e); 1880 } 1881 break; 1882 } 1883 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1884 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1885 if (nai == null) { 1886 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1887 break; 1888 } 1889 try { 1890 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1891 } catch (Exception e) { 1892 // Never crash! 1893 loge("Exception in removeVpnUidRanges: " + e); 1894 } 1895 break; 1896 } 1897 case NetworkAgent.EVENT_BLOCK_ADDRESS_FAMILY: { 1898 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1899 if (nai == null) { 1900 loge("EVENT_BLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1901 break; 1902 } 1903 try { 1904 mNetd.blockAddressFamily((Integer) msg.obj, nai.network.netId, 1905 nai.linkProperties.getInterfaceName()); 1906 } catch (Exception e) { 1907 // Never crash! 1908 loge("Exception in blockAddressFamily: " + e); 1909 } 1910 break; 1911 } 1912 case NetworkAgent.EVENT_UNBLOCK_ADDRESS_FAMILY: { 1913 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1914 if (nai == null) { 1915 loge("EVENT_UNBLOCK_ADDRESS_FAMILY from unknown NetworkAgent"); 1916 break; 1917 } 1918 try { 1919 mNetd.unblockAddressFamily((Integer) msg.obj, nai.network.netId, 1920 nai.linkProperties.getInterfaceName()); 1921 } catch (Exception e) { 1922 // Never crash! 1923 loge("Exception in blockAddressFamily: " + e); 1924 } 1925 break; 1926 } 1927 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 1928 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1929 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1930 if (DBG) log("Validated " + nai.name()); 1931 nai.validated = true; 1932 rematchNetworkAndRequests(nai); 1933 } 1934 break; 1935 } 1936 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1937 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1938 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1939 handleLingerComplete(nai); 1940 } 1941 break; 1942 } 1943 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1944 if (msg.arg1 == 0) { 1945 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1946 } else { 1947 NetworkAgentInfo nai = null; 1948 synchronized (mNetworkForNetId) { 1949 nai = mNetworkForNetId.get(msg.arg2); 1950 } 1951 if (nai == null) { 1952 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1953 break; 1954 } 1955 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1956 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1957 } 1958 break; 1959 } 1960 case NetworkStateTracker.EVENT_STATE_CHANGED: { 1961 info = (NetworkInfo) msg.obj; 1962 NetworkInfo.State state = info.getState(); 1963 1964 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 1965 (state == NetworkInfo.State.DISCONNECTED) || 1966 (state == NetworkInfo.State.SUSPENDED)) { 1967 log("ConnectivityChange for " + 1968 info.getTypeName() + ": " + 1969 state + "/" + info.getDetailedState()); 1970 } 1971 1972 // Since mobile has the notion of a network/apn that can be used for 1973 // provisioning we need to check every time we're connected as 1974 // CaptiveProtalTracker won't detected it because DCT doesn't report it 1975 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 1976 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 1977 // is received by MDST and sent here as EVENT_STATE_CHANGED. 1978 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 1979 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 1980 Settings.Global.DEVICE_PROVISIONED, 0)) 1981 && (((state == NetworkInfo.State.CONNECTED) 1982 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 1983 || info.isConnectedToProvisioningNetwork())) { 1984 log("ConnectivityChange checkMobileProvisioning for" 1985 + " TYPE_MOBILE or ProvisioningNetwork"); 1986 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 1987 } 1988 1989 EventLogTags.writeConnectivityStateChanged( 1990 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 1991 1992 if (info.isConnectedToProvisioningNetwork()) { 1993 /** 1994 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 1995 * for now its an in between network, its a network that 1996 * is actually a default network but we don't want it to be 1997 * announced as such to keep background applications from 1998 * trying to use it. It turns out that some still try so we 1999 * take the additional step of clearing any default routes 2000 * to the link that may have incorrectly setup by the lower 2001 * levels. 2002 */ 2003 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 2004 if (DBG) { 2005 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2006 } 2007 2008 // Clear any default routes setup by the radio so 2009 // any activity by applications trying to use this 2010 // connection will fail until the provisioning network 2011 // is enabled. 2012 /* 2013 for (RouteInfo r : lp.getRoutes()) { 2014 removeRoute(lp, r, TO_DEFAULT_TABLE, 2015 mNetTrackers[info.getType()].getNetwork().netId); 2016 } 2017 */ 2018 } else if (state == NetworkInfo.State.DISCONNECTED) { 2019 } else if (state == NetworkInfo.State.SUSPENDED) { 2020 } else if (state == NetworkInfo.State.CONNECTED) { 2021 // handleConnect(info); 2022 } 2023 if (mLockdownTracker != null) { 2024 mLockdownTracker.onNetworkInfoChanged(info); 2025 } 2026 break; 2027 } 2028 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2029 info = (NetworkInfo) msg.obj; 2030 // TODO: Temporary allowing network configuration 2031 // change not resetting sockets. 2032 // @see bug/4455071 2033 /* 2034 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2035 false); 2036 */ 2037 break; 2038 } 2039 } 2040 } 2041 } 2042 2043 private void handleAsyncChannelHalfConnect(Message msg) { 2044 AsyncChannel ac = (AsyncChannel) msg.obj; 2045 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2046 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2047 if (VDBG) log("NetworkFactory connected"); 2048 // A network factory has connected. Send it all current NetworkRequests. 2049 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2050 if (nri.isRequest == false) continue; 2051 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2052 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2053 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2054 } 2055 } else { 2056 loge("Error connecting NetworkFactory"); 2057 mNetworkFactoryInfos.remove(msg.obj); 2058 } 2059 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2060 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2061 if (VDBG) log("NetworkAgent connected"); 2062 // A network agent has requested a connection. Establish the connection. 2063 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2064 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2065 } else { 2066 loge("Error connecting NetworkAgent"); 2067 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2068 if (nai != null) { 2069 synchronized (mNetworkForNetId) { 2070 mNetworkForNetId.remove(nai.network.netId); 2071 } 2072 // Just in case. 2073 mLegacyTypeTracker.remove(nai); 2074 } 2075 } 2076 } 2077 } 2078 private void handleAsyncChannelDisconnected(Message msg) { 2079 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2080 if (nai != null) { 2081 if (DBG) { 2082 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2083 } 2084 // A network agent has disconnected. 2085 if (nai.created) { 2086 // Tell netd to clean up the configuration for this network 2087 // (routing rules, DNS, etc). 2088 try { 2089 mNetd.removeNetwork(nai.network.netId); 2090 } catch (Exception e) { 2091 loge("Exception removing network: " + e); 2092 } 2093 } 2094 // TODO - if we move the logic to the network agent (have them disconnect 2095 // because they lost all their requests or because their score isn't good) 2096 // then they would disconnect organically, report their new state and then 2097 // disconnect the channel. 2098 if (nai.networkInfo.isConnected()) { 2099 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2100 null, null); 2101 } 2102 if (isDefaultNetwork(nai)) { 2103 mDefaultInetConditionPublished = 0; 2104 } 2105 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2106 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2107 mNetworkAgentInfos.remove(msg.replyTo); 2108 updateClat(null, nai.linkProperties, nai); 2109 mLegacyTypeTracker.remove(nai); 2110 synchronized (mNetworkForNetId) { 2111 mNetworkForNetId.remove(nai.network.netId); 2112 } 2113 // Since we've lost the network, go through all the requests that 2114 // it was satisfying and see if any other factory can satisfy them. 2115 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2116 for (int i = 0; i < nai.networkRequests.size(); i++) { 2117 NetworkRequest request = nai.networkRequests.valueAt(i); 2118 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2119 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2120 if (DBG) { 2121 log("Checking for replacement network to handle request " + request ); 2122 } 2123 mNetworkForRequestId.remove(request.requestId); 2124 sendUpdatedScoreToFactories(request, 0); 2125 NetworkAgentInfo alternative = null; 2126 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 2127 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 2128 if (existing.networkInfo.isConnected() && 2129 request.networkCapabilities.satisfiedByNetworkCapabilities( 2130 existing.networkCapabilities) && 2131 (alternative == null || 2132 alternative.getCurrentScore() < existing.getCurrentScore())) { 2133 alternative = existing; 2134 } 2135 } 2136 if (alternative != null) { 2137 if (DBG) log(" found replacement in " + alternative.name()); 2138 if (!toActivate.contains(alternative)) { 2139 toActivate.add(alternative); 2140 } 2141 } 2142 } 2143 } 2144 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2145 removeDataActivityTracking(nai); 2146 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 2147 requestNetworkTransitionWakelock(nai.name()); 2148 } 2149 for (NetworkAgentInfo networkToActivate : toActivate) { 2150 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2151 } 2152 } 2153 } 2154 2155 private void handleRegisterNetworkRequest(Message msg) { 2156 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2157 final NetworkCapabilities newCap = nri.request.networkCapabilities; 2158 int score = 0; 2159 2160 // Check for the best currently alive network that satisfies this request 2161 NetworkAgentInfo bestNetwork = null; 2162 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2163 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2164 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 2165 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2166 if ((bestNetwork == null) || 2167 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2168 if (!nri.isRequest) { 2169 // Not setting bestNetwork here as a listening NetworkRequest may be 2170 // satisfied by multiple Networks. Instead the request is added to 2171 // each satisfying Network and notified about each. 2172 network.addRequest(nri.request); 2173 notifyNetworkCallback(network, nri); 2174 } else { 2175 bestNetwork = network; 2176 } 2177 } 2178 } 2179 } 2180 if (bestNetwork != null) { 2181 if (DBG) log("using " + bestNetwork.name()); 2182 if (bestNetwork.networkInfo.isConnected()) { 2183 // Cancel any lingering so the linger timeout doesn't teardown this network 2184 // even though we have a request for it. 2185 bestNetwork.networkLingered.clear(); 2186 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2187 } 2188 bestNetwork.addRequest(nri.request); 2189 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2190 notifyNetworkCallback(bestNetwork, nri); 2191 score = bestNetwork.getCurrentScore(); 2192 if (nri.request.legacyType != TYPE_NONE) { 2193 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2194 } 2195 } 2196 mNetworkRequests.put(nri.request, nri); 2197 if (nri.isRequest) { 2198 if (DBG) log("sending new NetworkRequest to factories"); 2199 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2200 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2201 0, nri.request); 2202 } 2203 } 2204 } 2205 2206 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2207 NetworkRequestInfo nri = mNetworkRequests.get(request); 2208 if (nri != null) { 2209 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2210 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2211 return; 2212 } 2213 if (DBG) log("releasing NetworkRequest " + request); 2214 nri.unlinkDeathRecipient(); 2215 mNetworkRequests.remove(request); 2216 if (nri.isRequest) { 2217 // Find all networks that are satisfying this request and remove the request 2218 // from their request lists. 2219 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2220 if (nai.networkRequests.get(nri.request.requestId) != null) { 2221 nai.networkRequests.remove(nri.request.requestId); 2222 if (DBG) { 2223 log(" Removing from current network " + nai.name() + 2224 ", leaving " + nai.networkRequests.size() + 2225 " requests."); 2226 } 2227 // check if has any requests remaining and if not, 2228 // disconnect (unless it's a VPN). 2229 boolean keep = nai.isVPN(); 2230 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2231 NetworkRequest r = nai.networkRequests.valueAt(i); 2232 if (mNetworkRequests.get(r).isRequest) keep = true; 2233 } 2234 if (!keep) { 2235 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2236 nai.asyncChannel.disconnect(); 2237 } 2238 } 2239 } 2240 2241 // Maintain the illusion. When this request arrived, we might have preteneded 2242 // that a network connected to serve it, even though the network was already 2243 // connected. Now that this request has gone away, we might have to pretend 2244 // that the network disconnected. LegacyTypeTracker will generate that 2245 // phatom disconnect for this type. 2246 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2247 if (nai != null) { 2248 mNetworkForRequestId.remove(nri.request.requestId); 2249 if (nri.request.legacyType != TYPE_NONE) { 2250 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2251 } 2252 } 2253 2254 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2255 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2256 nri.request); 2257 } 2258 } else { 2259 // listens don't have a singular affectedNetwork. Check all networks to see 2260 // if this listen request applies and remove it. 2261 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2262 nai.networkRequests.remove(nri.request.requestId); 2263 } 2264 } 2265 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2266 } 2267 } 2268 2269 private class InternalHandler extends Handler { 2270 public InternalHandler(Looper looper) { 2271 super(looper); 2272 } 2273 2274 @Override 2275 public void handleMessage(Message msg) { 2276 NetworkInfo info; 2277 switch (msg.what) { 2278 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2279 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2280 String causedBy = null; 2281 synchronized (ConnectivityService.this) { 2282 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2283 mNetTransitionWakeLock.isHeld()) { 2284 mNetTransitionWakeLock.release(); 2285 causedBy = mNetTransitionWakeLockCausedBy; 2286 } else { 2287 break; 2288 } 2289 } 2290 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2291 log("Failed to find a new network - expiring NetTransition Wakelock"); 2292 } else { 2293 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2294 " cleared because we found a replacement network"); 2295 } 2296 break; 2297 } 2298 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2299 handleDeprecatedGlobalHttpProxy(); 2300 break; 2301 } 2302 case EVENT_SET_DEPENDENCY_MET: { 2303 boolean met = (msg.arg1 == ENABLED); 2304 handleSetDependencyMet(msg.arg2, met); 2305 break; 2306 } 2307 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2308 Intent intent = (Intent)msg.obj; 2309 sendStickyBroadcast(intent); 2310 break; 2311 } 2312 case EVENT_SET_POLICY_DATA_ENABLE: { 2313 final int networkType = msg.arg1; 2314 final boolean enabled = msg.arg2 == ENABLED; 2315 handleSetPolicyDataEnable(networkType, enabled); 2316 break; 2317 } 2318 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2319 int tag = mEnableFailFastMobileDataTag.get(); 2320 if (msg.arg1 == tag) { 2321 MobileDataStateTracker mobileDst = 2322 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2323 if (mobileDst != null) { 2324 mobileDst.setEnableFailFastMobileData(msg.arg2); 2325 } 2326 } else { 2327 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2328 + " != tag:" + tag); 2329 } 2330 break; 2331 } 2332 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2333 handleNetworkSamplingTimeout(); 2334 break; 2335 } 2336 case EVENT_PROXY_HAS_CHANGED: { 2337 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2338 break; 2339 } 2340 case EVENT_REGISTER_NETWORK_FACTORY: { 2341 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2342 break; 2343 } 2344 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2345 handleUnregisterNetworkFactory((Messenger)msg.obj); 2346 break; 2347 } 2348 case EVENT_REGISTER_NETWORK_AGENT: { 2349 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2350 break; 2351 } 2352 case EVENT_REGISTER_NETWORK_REQUEST: 2353 case EVENT_REGISTER_NETWORK_LISTENER: { 2354 handleRegisterNetworkRequest(msg); 2355 break; 2356 } 2357 case EVENT_RELEASE_NETWORK_REQUEST: { 2358 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2359 break; 2360 } 2361 case EVENT_SYSTEM_READY: { 2362 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2363 nai.networkMonitor.systemReady = true; 2364 } 2365 break; 2366 } 2367 } 2368 } 2369 } 2370 2371 // javadoc from interface 2372 public int tether(String iface) { 2373 enforceTetherChangePermission(); 2374 2375 if (isTetheringSupported()) { 2376 return mTethering.tether(iface); 2377 } else { 2378 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2379 } 2380 } 2381 2382 // javadoc from interface 2383 public int untether(String iface) { 2384 enforceTetherChangePermission(); 2385 2386 if (isTetheringSupported()) { 2387 return mTethering.untether(iface); 2388 } else { 2389 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2390 } 2391 } 2392 2393 // javadoc from interface 2394 public int getLastTetherError(String iface) { 2395 enforceTetherAccessPermission(); 2396 2397 if (isTetheringSupported()) { 2398 return mTethering.getLastTetherError(iface); 2399 } else { 2400 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2401 } 2402 } 2403 2404 // TODO - proper iface API for selection by property, inspection, etc 2405 public String[] getTetherableUsbRegexs() { 2406 enforceTetherAccessPermission(); 2407 if (isTetheringSupported()) { 2408 return mTethering.getTetherableUsbRegexs(); 2409 } else { 2410 return new String[0]; 2411 } 2412 } 2413 2414 public String[] getTetherableWifiRegexs() { 2415 enforceTetherAccessPermission(); 2416 if (isTetheringSupported()) { 2417 return mTethering.getTetherableWifiRegexs(); 2418 } else { 2419 return new String[0]; 2420 } 2421 } 2422 2423 public String[] getTetherableBluetoothRegexs() { 2424 enforceTetherAccessPermission(); 2425 if (isTetheringSupported()) { 2426 return mTethering.getTetherableBluetoothRegexs(); 2427 } else { 2428 return new String[0]; 2429 } 2430 } 2431 2432 public int setUsbTethering(boolean enable) { 2433 enforceTetherChangePermission(); 2434 if (isTetheringSupported()) { 2435 return mTethering.setUsbTethering(enable); 2436 } else { 2437 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2438 } 2439 } 2440 2441 // TODO - move iface listing, queries, etc to new module 2442 // javadoc from interface 2443 public String[] getTetherableIfaces() { 2444 enforceTetherAccessPermission(); 2445 return mTethering.getTetherableIfaces(); 2446 } 2447 2448 public String[] getTetheredIfaces() { 2449 enforceTetherAccessPermission(); 2450 return mTethering.getTetheredIfaces(); 2451 } 2452 2453 public String[] getTetheringErroredIfaces() { 2454 enforceTetherAccessPermission(); 2455 return mTethering.getErroredIfaces(); 2456 } 2457 2458 public String[] getTetheredDhcpRanges() { 2459 enforceConnectivityInternalPermission(); 2460 return mTethering.getTetheredDhcpRanges(); 2461 } 2462 2463 // if ro.tether.denied = true we default to no tethering 2464 // gservices could set the secure setting to 1 though to enable it on a build where it 2465 // had previously been turned off. 2466 public boolean isTetheringSupported() { 2467 enforceTetherAccessPermission(); 2468 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2469 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2470 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2471 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2472 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2473 mTethering.getTetherableWifiRegexs().length != 0 || 2474 mTethering.getTetherableBluetoothRegexs().length != 0) && 2475 mTethering.getUpstreamIfaceTypes().length != 0); 2476 } 2477 2478 // Called when we lose the default network and have no replacement yet. 2479 // This will automatically be cleared after X seconds or a new default network 2480 // becomes CONNECTED, whichever happens first. The timer is started by the 2481 // first caller and not restarted by subsequent callers. 2482 private void requestNetworkTransitionWakelock(String forWhom) { 2483 int serialNum = 0; 2484 synchronized (this) { 2485 if (mNetTransitionWakeLock.isHeld()) return; 2486 serialNum = ++mNetTransitionWakeLockSerialNumber; 2487 mNetTransitionWakeLock.acquire(); 2488 mNetTransitionWakeLockCausedBy = forWhom; 2489 } 2490 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2491 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2492 mNetTransitionWakeLockTimeout); 2493 return; 2494 } 2495 2496 // 100 percent is full good, 0 is full bad. 2497 public void reportInetCondition(int networkType, int percentage) { 2498 if (percentage > 50) return; // don't handle good network reports 2499 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2500 if (nai != null) reportBadNetwork(nai.network); 2501 } 2502 2503 public void reportBadNetwork(Network network) { 2504 enforceAccessPermission(); 2505 enforceInternetPermission(); 2506 2507 if (network == null) return; 2508 2509 final int uid = Binder.getCallingUid(); 2510 NetworkAgentInfo nai = null; 2511 synchronized (mNetworkForNetId) { 2512 nai = mNetworkForNetId.get(network.netId); 2513 } 2514 if (nai == null) return; 2515 synchronized (nai) { 2516 if (isNetworkBlocked(nai, uid)) return; 2517 2518 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2519 } 2520 } 2521 2522 public ProxyInfo getProxy() { 2523 // this information is already available as a world read/writable jvm property 2524 // so this API change wouldn't have a benifit. It also breaks the passing 2525 // of proxy info to all the JVMs. 2526 // enforceAccessPermission(); 2527 synchronized (mProxyLock) { 2528 ProxyInfo ret = mGlobalProxy; 2529 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2530 return ret; 2531 } 2532 } 2533 2534 public void setGlobalProxy(ProxyInfo proxyProperties) { 2535 enforceConnectivityInternalPermission(); 2536 2537 synchronized (mProxyLock) { 2538 if (proxyProperties == mGlobalProxy) return; 2539 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2540 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2541 2542 String host = ""; 2543 int port = 0; 2544 String exclList = ""; 2545 String pacFileUrl = ""; 2546 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2547 (proxyProperties.getPacFileUrl() != null))) { 2548 if (!proxyProperties.isValid()) { 2549 if (DBG) 2550 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2551 return; 2552 } 2553 mGlobalProxy = new ProxyInfo(proxyProperties); 2554 host = mGlobalProxy.getHost(); 2555 port = mGlobalProxy.getPort(); 2556 exclList = mGlobalProxy.getExclusionListAsString(); 2557 if (proxyProperties.getPacFileUrl() != null) { 2558 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2559 } 2560 } else { 2561 mGlobalProxy = null; 2562 } 2563 ContentResolver res = mContext.getContentResolver(); 2564 final long token = Binder.clearCallingIdentity(); 2565 try { 2566 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2567 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2568 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2569 exclList); 2570 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2571 } finally { 2572 Binder.restoreCallingIdentity(token); 2573 } 2574 } 2575 2576 if (mGlobalProxy == null) { 2577 proxyProperties = mDefaultProxy; 2578 } 2579 sendProxyBroadcast(proxyProperties); 2580 } 2581 2582 private void loadGlobalProxy() { 2583 ContentResolver res = mContext.getContentResolver(); 2584 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2585 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2586 String exclList = Settings.Global.getString(res, 2587 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2588 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2589 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2590 ProxyInfo proxyProperties; 2591 if (!TextUtils.isEmpty(pacFileUrl)) { 2592 proxyProperties = new ProxyInfo(pacFileUrl); 2593 } else { 2594 proxyProperties = new ProxyInfo(host, port, exclList); 2595 } 2596 if (!proxyProperties.isValid()) { 2597 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2598 return; 2599 } 2600 2601 synchronized (mProxyLock) { 2602 mGlobalProxy = proxyProperties; 2603 } 2604 } 2605 } 2606 2607 public ProxyInfo getGlobalProxy() { 2608 // this information is already available as a world read/writable jvm property 2609 // so this API change wouldn't have a benifit. It also breaks the passing 2610 // of proxy info to all the JVMs. 2611 // enforceAccessPermission(); 2612 synchronized (mProxyLock) { 2613 return mGlobalProxy; 2614 } 2615 } 2616 2617 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2618 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2619 && (proxy.getPacFileUrl() == null)) { 2620 proxy = null; 2621 } 2622 synchronized (mProxyLock) { 2623 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2624 if (mDefaultProxy == proxy) return; // catches repeated nulls 2625 if (proxy != null && !proxy.isValid()) { 2626 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2627 return; 2628 } 2629 2630 // This call could be coming from the PacManager, containing the port of the local 2631 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2632 // global (to get the correct local port), and send a broadcast. 2633 // TODO: Switch PacManager to have its own message to send back rather than 2634 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2635 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 2636 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2637 mGlobalProxy = proxy; 2638 sendProxyBroadcast(mGlobalProxy); 2639 return; 2640 } 2641 mDefaultProxy = proxy; 2642 2643 if (mGlobalProxy != null) return; 2644 if (!mDefaultProxyDisabled) { 2645 sendProxyBroadcast(proxy); 2646 } 2647 } 2648 } 2649 2650 private void handleDeprecatedGlobalHttpProxy() { 2651 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2652 Settings.Global.HTTP_PROXY); 2653 if (!TextUtils.isEmpty(proxy)) { 2654 String data[] = proxy.split(":"); 2655 if (data.length == 0) { 2656 return; 2657 } 2658 2659 String proxyHost = data[0]; 2660 int proxyPort = 8080; 2661 if (data.length > 1) { 2662 try { 2663 proxyPort = Integer.parseInt(data[1]); 2664 } catch (NumberFormatException e) { 2665 return; 2666 } 2667 } 2668 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2669 setGlobalProxy(p); 2670 } 2671 } 2672 2673 private void sendProxyBroadcast(ProxyInfo proxy) { 2674 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2675 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2676 if (DBG) log("sending Proxy Broadcast for " + proxy); 2677 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2678 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2679 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2680 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2681 final long ident = Binder.clearCallingIdentity(); 2682 try { 2683 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2684 } finally { 2685 Binder.restoreCallingIdentity(ident); 2686 } 2687 } 2688 2689 private static class SettingsObserver extends ContentObserver { 2690 private int mWhat; 2691 private Handler mHandler; 2692 SettingsObserver(Handler handler, int what) { 2693 super(handler); 2694 mHandler = handler; 2695 mWhat = what; 2696 } 2697 2698 void observe(Context context) { 2699 ContentResolver resolver = context.getContentResolver(); 2700 resolver.registerContentObserver(Settings.Global.getUriFor( 2701 Settings.Global.HTTP_PROXY), false, this); 2702 } 2703 2704 @Override 2705 public void onChange(boolean selfChange) { 2706 mHandler.obtainMessage(mWhat).sendToTarget(); 2707 } 2708 } 2709 2710 private static void log(String s) { 2711 Slog.d(TAG, s); 2712 } 2713 2714 private static void loge(String s) { 2715 Slog.e(TAG, s); 2716 } 2717 2718 int convertFeatureToNetworkType(int networkType, String feature) { 2719 int usedNetworkType = networkType; 2720 2721 if(networkType == ConnectivityManager.TYPE_MOBILE) { 2722 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 2723 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 2724 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 2725 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 2726 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 2727 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 2728 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 2729 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 2730 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 2731 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 2732 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 2733 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 2734 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 2735 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 2736 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 2737 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 2738 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 2739 } else { 2740 Slog.e(TAG, "Can't match any mobile netTracker!"); 2741 } 2742 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 2743 if (TextUtils.equals(feature, "p2p")) { 2744 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 2745 } else { 2746 Slog.e(TAG, "Can't match any wifi netTracker!"); 2747 } 2748 } else { 2749 Slog.e(TAG, "Unexpected network type"); 2750 } 2751 return usedNetworkType; 2752 } 2753 2754 private static <T> T checkNotNull(T value, String message) { 2755 if (value == null) { 2756 throw new NullPointerException(message); 2757 } 2758 return value; 2759 } 2760 2761 /** 2762 * Prepare for a VPN application. This method is used by VpnDialogs 2763 * and not available in ConnectivityManager. Permissions are checked 2764 * in Vpn class. 2765 * @hide 2766 */ 2767 @Override 2768 public boolean prepareVpn(String oldPackage, String newPackage) { 2769 throwIfLockdownEnabled(); 2770 int user = UserHandle.getUserId(Binder.getCallingUid()); 2771 synchronized(mVpns) { 2772 return mVpns.get(user).prepare(oldPackage, newPackage); 2773 } 2774 } 2775 2776 /** 2777 * Set whether the current VPN package has the ability to launch VPNs without 2778 * user intervention. This method is used by system UIs and not available 2779 * in ConnectivityManager. Permissions are checked in Vpn class. 2780 * @hide 2781 */ 2782 @Override 2783 public void setVpnPackageAuthorization(boolean authorized) { 2784 int user = UserHandle.getUserId(Binder.getCallingUid()); 2785 synchronized(mVpns) { 2786 mVpns.get(user).setPackageAuthorization(authorized); 2787 } 2788 } 2789 2790 /** 2791 * Configure a TUN interface and return its file descriptor. Parameters 2792 * are encoded and opaque to this class. This method is used by VpnBuilder 2793 * and not available in ConnectivityManager. Permissions are checked in 2794 * Vpn class. 2795 * @hide 2796 */ 2797 @Override 2798 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2799 throwIfLockdownEnabled(); 2800 int user = UserHandle.getUserId(Binder.getCallingUid()); 2801 synchronized(mVpns) { 2802 return mVpns.get(user).establish(config); 2803 } 2804 } 2805 2806 /** 2807 * Start legacy VPN, controlling native daemons as needed. Creates a 2808 * secondary thread to perform connection work, returning quickly. 2809 */ 2810 @Override 2811 public void startLegacyVpn(VpnProfile profile) { 2812 throwIfLockdownEnabled(); 2813 final LinkProperties egress = getActiveLinkProperties(); 2814 if (egress == null) { 2815 throw new IllegalStateException("Missing active network connection"); 2816 } 2817 int user = UserHandle.getUserId(Binder.getCallingUid()); 2818 synchronized(mVpns) { 2819 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2820 } 2821 } 2822 2823 /** 2824 * Return the information of the ongoing legacy VPN. This method is used 2825 * by VpnSettings and not available in ConnectivityManager. Permissions 2826 * are checked in Vpn class. 2827 * @hide 2828 */ 2829 @Override 2830 public LegacyVpnInfo getLegacyVpnInfo() { 2831 throwIfLockdownEnabled(); 2832 int user = UserHandle.getUserId(Binder.getCallingUid()); 2833 synchronized(mVpns) { 2834 return mVpns.get(user).getLegacyVpnInfo(); 2835 } 2836 } 2837 2838 /** 2839 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2840 * not available in ConnectivityManager. 2841 * Permissions are checked in Vpn class. 2842 * @hide 2843 */ 2844 @Override 2845 public VpnConfig getVpnConfig() { 2846 int user = UserHandle.getUserId(Binder.getCallingUid()); 2847 synchronized(mVpns) { 2848 return mVpns.get(user).getVpnConfig(); 2849 } 2850 } 2851 2852 @Override 2853 public boolean updateLockdownVpn() { 2854 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2855 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2856 return false; 2857 } 2858 2859 // Tear down existing lockdown if profile was removed 2860 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2861 if (mLockdownEnabled) { 2862 if (!mKeyStore.isUnlocked()) { 2863 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2864 return false; 2865 } 2866 2867 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2868 final VpnProfile profile = VpnProfile.decode( 2869 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2870 int user = UserHandle.getUserId(Binder.getCallingUid()); 2871 synchronized(mVpns) { 2872 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2873 profile)); 2874 } 2875 } else { 2876 setLockdownTracker(null); 2877 } 2878 2879 return true; 2880 } 2881 2882 /** 2883 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2884 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2885 */ 2886 private void setLockdownTracker(LockdownVpnTracker tracker) { 2887 // Shutdown any existing tracker 2888 final LockdownVpnTracker existing = mLockdownTracker; 2889 mLockdownTracker = null; 2890 if (existing != null) { 2891 existing.shutdown(); 2892 } 2893 2894 try { 2895 if (tracker != null) { 2896 mNetd.setFirewallEnabled(true); 2897 mNetd.setFirewallInterfaceRule("lo", true); 2898 mLockdownTracker = tracker; 2899 mLockdownTracker.init(); 2900 } else { 2901 mNetd.setFirewallEnabled(false); 2902 } 2903 } catch (RemoteException e) { 2904 // ignored; NMS lives inside system_server 2905 } 2906 } 2907 2908 private void throwIfLockdownEnabled() { 2909 if (mLockdownEnabled) { 2910 throw new IllegalStateException("Unavailable in lockdown mode"); 2911 } 2912 } 2913 2914 public void supplyMessenger(int networkType, Messenger messenger) { 2915 enforceConnectivityInternalPermission(); 2916 2917 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2918 mNetTrackers[networkType].supplyMessenger(messenger); 2919 } 2920 } 2921 2922 public int findConnectionTypeForIface(String iface) { 2923 enforceConnectivityInternalPermission(); 2924 2925 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2926 2927 synchronized(mNetworkForNetId) { 2928 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2929 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2930 LinkProperties lp = nai.linkProperties; 2931 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2932 return nai.networkInfo.getType(); 2933 } 2934 } 2935 } 2936 return ConnectivityManager.TYPE_NONE; 2937 } 2938 2939 /** 2940 * Have mobile data fail fast if enabled. 2941 * 2942 * @param enabled DctConstants.ENABLED/DISABLED 2943 */ 2944 private void setEnableFailFastMobileData(int enabled) { 2945 int tag; 2946 2947 if (enabled == DctConstants.ENABLED) { 2948 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 2949 } else { 2950 tag = mEnableFailFastMobileDataTag.get(); 2951 } 2952 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 2953 enabled)); 2954 } 2955 2956 private boolean isMobileDataStateTrackerReady() { 2957 MobileDataStateTracker mdst = 2958 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 2959 return (mdst != null) && (mdst.isReady()); 2960 } 2961 2962 /** 2963 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 2964 */ 2965 2966 /** 2967 * No connection was possible to the network. 2968 * This is NOT a warm sim. 2969 */ 2970 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 2971 2972 /** 2973 * A connection was made to the internet, all is well. 2974 * This is NOT a warm sim. 2975 */ 2976 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 2977 2978 /** 2979 * A connection was made but no dns server was available to resolve a name to address. 2980 * This is NOT a warm sim since provisioning network is supported. 2981 */ 2982 private static final int CMP_RESULT_CODE_NO_DNS = 2; 2983 2984 /** 2985 * A connection was made but could not open a TCP connection. 2986 * This is NOT a warm sim since provisioning network is supported. 2987 */ 2988 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 2989 2990 /** 2991 * A connection was made but there was a redirection, we appear to be in walled garden. 2992 * This is an indication of a warm sim on a mobile network such as T-Mobile. 2993 */ 2994 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 2995 2996 /** 2997 * The mobile network is a provisioning network. 2998 * This is an indication of a warm sim on a mobile network such as AT&T. 2999 */ 3000 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 3001 3002 /** 3003 * The mobile network is provisioning 3004 */ 3005 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 3006 3007 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 3008 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 3009 3010 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 3011 3012 @Override 3013 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3014 int timeOutMs = -1; 3015 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 3016 enforceConnectivityInternalPermission(); 3017 3018 final long token = Binder.clearCallingIdentity(); 3019 try { 3020 timeOutMs = suggestedTimeOutMs; 3021 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 3022 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 3023 } 3024 3025 // Check that mobile networks are supported 3026 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 3027 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 3028 if (DBG) log("checkMobileProvisioning: X no mobile network"); 3029 return timeOutMs; 3030 } 3031 3032 // If we're already checking don't do it again 3033 // TODO: Add a queue of results... 3034 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 3035 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 3036 return timeOutMs; 3037 } 3038 3039 // Start off with mobile notification off 3040 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3041 3042 CheckMp checkMp = new CheckMp(mContext, this); 3043 CheckMp.CallBack cb = new CheckMp.CallBack() { 3044 @Override 3045 void onComplete(Integer result) { 3046 if (DBG) log("CheckMp.onComplete: result=" + result); 3047 NetworkInfo ni = 3048 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 3049 switch(result) { 3050 case CMP_RESULT_CODE_CONNECTABLE: 3051 case CMP_RESULT_CODE_NO_CONNECTION: 3052 case CMP_RESULT_CODE_NO_DNS: 3053 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 3054 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 3055 break; 3056 } 3057 case CMP_RESULT_CODE_REDIRECTED: { 3058 if (DBG) log("CheckMp.onComplete: warm sim"); 3059 String url = getMobileProvisioningUrl(); 3060 if (TextUtils.isEmpty(url)) { 3061 url = getMobileRedirectedProvisioningUrl(); 3062 } 3063 if (TextUtils.isEmpty(url) == false) { 3064 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 3065 setProvNotificationVisible(true, 3066 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3067 url); 3068 } else { 3069 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 3070 } 3071 break; 3072 } 3073 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 3074 String url = getMobileProvisioningUrl(); 3075 if (TextUtils.isEmpty(url) == false) { 3076 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 3077 setProvNotificationVisible(true, 3078 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 3079 url); 3080 // Mark that we've got a provisioning network and 3081 // Disable Mobile Data until user actually starts provisioning. 3082 mIsProvisioningNetwork.set(true); 3083 MobileDataStateTracker mdst = (MobileDataStateTracker) 3084 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3085 3086 // Disable radio until user starts provisioning 3087 mdst.setRadio(false); 3088 } else { 3089 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 3090 } 3091 break; 3092 } 3093 case CMP_RESULT_CODE_IS_PROVISIONING: { 3094 // FIXME: Need to know when provisioning is done. Probably we can 3095 // check the completion status if successful we're done if we 3096 // "timedout" or still connected to provisioning APN turn off data? 3097 if (DBG) log("CheckMp.onComplete: provisioning started"); 3098 mIsStartingProvisioning.set(false); 3099 break; 3100 } 3101 default: { 3102 loge("CheckMp.onComplete: ignore unexpected result=" + result); 3103 break; 3104 } 3105 } 3106 mIsCheckingMobileProvisioning.set(false); 3107 } 3108 }; 3109 CheckMp.Params params = 3110 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 3111 if (DBG) log("checkMobileProvisioning: params=" + params); 3112 // TODO: Reenable when calls to the now defunct 3113 // MobileDataStateTracker.isProvisioningNetwork() are removed. 3114 // This code should be moved to the Telephony code. 3115 // checkMp.execute(params); 3116 } finally { 3117 Binder.restoreCallingIdentity(token); 3118 if (DBG) log("checkMobileProvisioning: X"); 3119 } 3120 return timeOutMs; 3121 } 3122 3123 static class CheckMp extends 3124 AsyncTask<CheckMp.Params, Void, Integer> { 3125 private static final String CHECKMP_TAG = "CheckMp"; 3126 3127 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 3128 private static boolean mTestingFailures; 3129 3130 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 3131 private static final int MAX_LOOPS = 4; 3132 3133 // Number of milli-seconds to complete all of the retires 3134 public static final int MAX_TIMEOUT_MS = 60000; 3135 3136 // The socket should retry only 5 seconds, the default is longer 3137 private static final int SOCKET_TIMEOUT_MS = 5000; 3138 3139 // Sleep time for network errors 3140 private static final int NET_ERROR_SLEEP_SEC = 3; 3141 3142 // Sleep time for network route establishment 3143 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 3144 3145 // Short sleep time for polling :( 3146 private static final int POLLING_SLEEP_SEC = 1; 3147 3148 private Context mContext; 3149 private ConnectivityService mCs; 3150 private TelephonyManager mTm; 3151 private Params mParams; 3152 3153 /** 3154 * Parameters for AsyncTask.execute 3155 */ 3156 static class Params { 3157 private String mUrl; 3158 private long mTimeOutMs; 3159 private CallBack mCb; 3160 3161 Params(String url, long timeOutMs, CallBack cb) { 3162 mUrl = url; 3163 mTimeOutMs = timeOutMs; 3164 mCb = cb; 3165 } 3166 3167 @Override 3168 public String toString() { 3169 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 3170 } 3171 } 3172 3173 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 3174 // issued by name or ip address, for Google its by name so when we construct 3175 // this HostnameVerifier we'll pass the original Uri and use it to verify 3176 // the host. If the host name in the original uril fails we'll test the 3177 // hostname parameter just incase things change. 3178 static class CheckMpHostnameVerifier implements HostnameVerifier { 3179 Uri mOrgUri; 3180 3181 CheckMpHostnameVerifier(Uri orgUri) { 3182 mOrgUri = orgUri; 3183 } 3184 3185 @Override 3186 public boolean verify(String hostname, SSLSession session) { 3187 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 3188 String orgUriHost = mOrgUri.getHost(); 3189 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 3190 if (DBG) { 3191 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 3192 + " orgUriHost=" + orgUriHost); 3193 } 3194 return retVal; 3195 } 3196 } 3197 3198 /** 3199 * The call back object passed in Params. onComplete will be called 3200 * on the main thread. 3201 */ 3202 abstract static class CallBack { 3203 // Called on the main thread. 3204 abstract void onComplete(Integer result); 3205 } 3206 3207 public CheckMp(Context context, ConnectivityService cs) { 3208 if (Build.IS_DEBUGGABLE) { 3209 mTestingFailures = 3210 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 3211 } else { 3212 mTestingFailures = false; 3213 } 3214 3215 mContext = context; 3216 mCs = cs; 3217 3218 // Setup access to TelephonyService we'll be using. 3219 mTm = (TelephonyManager) mContext.getSystemService( 3220 Context.TELEPHONY_SERVICE); 3221 } 3222 3223 /** 3224 * Get the default url to use for the test. 3225 */ 3226 public String getDefaultUrl() { 3227 // See http://go/clientsdns for usage approval 3228 String server = Settings.Global.getString(mContext.getContentResolver(), 3229 Settings.Global.CAPTIVE_PORTAL_SERVER); 3230 if (server == null) { 3231 server = "clients3.google.com"; 3232 } 3233 return "http://" + server + "/generate_204"; 3234 } 3235 3236 /** 3237 * Detect if its possible to connect to the http url. DNS based detection techniques 3238 * do not work at all hotspots. The best way to check is to perform a request to 3239 * a known address that fetches the data we expect. 3240 */ 3241 private synchronized Integer isMobileOk(Params params) { 3242 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 3243 Uri orgUri = Uri.parse(params.mUrl); 3244 Random rand = new Random(); 3245 mParams = params; 3246 3247 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 3248 result = CMP_RESULT_CODE_NO_CONNECTION; 3249 log("isMobileOk: X not mobile capable result=" + result); 3250 return result; 3251 } 3252 3253 if (mCs.mIsStartingProvisioning.get()) { 3254 result = CMP_RESULT_CODE_IS_PROVISIONING; 3255 log("isMobileOk: X is provisioning result=" + result); 3256 return result; 3257 } 3258 3259 // See if we've already determined we've got a provisioning connection, 3260 // if so we don't need to do anything active. 3261 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 3262 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3263 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 3264 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 3265 3266 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 3267 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3268 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 3269 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 3270 3271 if (isDefaultProvisioning || isHipriProvisioning) { 3272 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3273 log("isMobileOk: X default || hipri is provisioning result=" + result); 3274 return result; 3275 } 3276 3277 try { 3278 // Continue trying to connect until time has run out 3279 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 3280 3281 if (!mCs.isMobileDataStateTrackerReady()) { 3282 // Wait for MobileDataStateTracker to be ready. 3283 if (DBG) log("isMobileOk: mdst is not ready"); 3284 while(SystemClock.elapsedRealtime() < endTime) { 3285 if (mCs.isMobileDataStateTrackerReady()) { 3286 // Enable fail fast as we'll do retries here and use a 3287 // hipri connection so the default connection stays active. 3288 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 3289 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 3290 break; 3291 } 3292 sleep(POLLING_SLEEP_SEC); 3293 } 3294 } 3295 3296 log("isMobileOk: start hipri url=" + params.mUrl); 3297 3298 // First wait until we can start using hipri 3299 Binder binder = new Binder(); 3300/* 3301 while(SystemClock.elapsedRealtime() < endTime) { 3302 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3303 Phone.FEATURE_ENABLE_HIPRI, binder); 3304 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 3305 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 3306 log("isMobileOk: hipri started"); 3307 break; 3308 } 3309 if (VDBG) log("isMobileOk: hipri not started yet"); 3310 result = CMP_RESULT_CODE_NO_CONNECTION; 3311 sleep(POLLING_SLEEP_SEC); 3312 } 3313*/ 3314 // Continue trying to connect until time has run out 3315 while(SystemClock.elapsedRealtime() < endTime) { 3316 try { 3317 // Wait for hipri to connect. 3318 // TODO: Don't poll and handle situation where hipri fails 3319 // because default is retrying. See b/9569540 3320 NetworkInfo.State state = mCs 3321 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3322 if (state != NetworkInfo.State.CONNECTED) { 3323 if (true/*VDBG*/) { 3324 log("isMobileOk: not connected ni=" + 3325 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3326 } 3327 sleep(POLLING_SLEEP_SEC); 3328 result = CMP_RESULT_CODE_NO_CONNECTION; 3329 continue; 3330 } 3331 3332 // Hipri has started check if this is a provisioning url 3333 MobileDataStateTracker mdst = (MobileDataStateTracker) 3334 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3335 if (mdst.isProvisioningNetwork()) { 3336 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 3337 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 3338 return result; 3339 } else { 3340 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 3341 } 3342 3343 // Get of the addresses associated with the url host. We need to use the 3344 // address otherwise HttpURLConnection object will use the name to get 3345 // the addresses and will try every address but that will bypass the 3346 // route to host we setup and the connection could succeed as the default 3347 // interface might be connected to the internet via wifi or other interface. 3348 InetAddress[] addresses; 3349 try { 3350 addresses = InetAddress.getAllByName(orgUri.getHost()); 3351 } catch (UnknownHostException e) { 3352 result = CMP_RESULT_CODE_NO_DNS; 3353 log("isMobileOk: X UnknownHostException result=" + result); 3354 return result; 3355 } 3356 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 3357 3358 // Get the type of addresses supported by this link 3359 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 3360 ConnectivityManager.TYPE_MOBILE_HIPRI); 3361 boolean linkHasIpv4 = lp.hasIPv4Address(); 3362 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 3363 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 3364 + " linkHasIpv6=" + linkHasIpv6); 3365 3366 final ArrayList<InetAddress> validAddresses = 3367 new ArrayList<InetAddress>(addresses.length); 3368 3369 for (InetAddress addr : addresses) { 3370 if (((addr instanceof Inet4Address) && linkHasIpv4) || 3371 ((addr instanceof Inet6Address) && linkHasIpv6)) { 3372 validAddresses.add(addr); 3373 } 3374 } 3375 3376 if (validAddresses.size() == 0) { 3377 return CMP_RESULT_CODE_NO_CONNECTION; 3378 } 3379 3380 int addrTried = 0; 3381 while (true) { 3382 // Loop through at most MAX_LOOPS valid addresses or until 3383 // we run out of time 3384 if (addrTried++ >= MAX_LOOPS) { 3385 log("isMobileOk: too many loops tried - giving up"); 3386 break; 3387 } 3388 if (SystemClock.elapsedRealtime() >= endTime) { 3389 log("isMobileOk: spend too much time - giving up"); 3390 break; 3391 } 3392 3393 InetAddress hostAddr = validAddresses.get(rand.nextInt( 3394 validAddresses.size())); 3395 3396 // Make a route to host so we check the specific interface. 3397 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 3398 hostAddr.getAddress())) { 3399 // Wait a short time to be sure the route is established ?? 3400 log("isMobileOk:" 3401 + " wait to establish route to hostAddr=" + hostAddr); 3402 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 3403 } else { 3404 log("isMobileOk:" 3405 + " could not establish route to hostAddr=" + hostAddr); 3406 // Wait a short time before the next attempt 3407 sleep(NET_ERROR_SLEEP_SEC); 3408 continue; 3409 } 3410 3411 // Rewrite the url to have numeric address to use the specific route 3412 // using http for half the attempts and https for the other half. 3413 // Doing https first and http second as on a redirected walled garden 3414 // such as t-mobile uses we get a SocketTimeoutException: "SSL 3415 // handshake timed out" which we declare as 3416 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 3417 // having http second we will be using logic used for some time. 3418 URL newUrl; 3419 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 3420 newUrl = new URL(scheme, hostAddr.getHostAddress(), 3421 orgUri.getPath()); 3422 log("isMobileOk: newUrl=" + newUrl); 3423 3424 HttpURLConnection urlConn = null; 3425 try { 3426 // Open the connection set the request headers and get the response 3427 urlConn = (HttpURLConnection)newUrl.openConnection( 3428 java.net.Proxy.NO_PROXY); 3429 if (scheme.equals("https")) { 3430 ((HttpsURLConnection)urlConn).setHostnameVerifier( 3431 new CheckMpHostnameVerifier(orgUri)); 3432 } 3433 urlConn.setInstanceFollowRedirects(false); 3434 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 3435 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 3436 urlConn.setUseCaches(false); 3437 urlConn.setAllowUserInteraction(false); 3438 // Set the "Connection" to "Close" as by default "Keep-Alive" 3439 // is used which is useless in this case. 3440 urlConn.setRequestProperty("Connection", "close"); 3441 int responseCode = urlConn.getResponseCode(); 3442 3443 // For debug display the headers 3444 Map<String, List<String>> headers = urlConn.getHeaderFields(); 3445 log("isMobileOk: headers=" + headers); 3446 3447 // Close the connection 3448 urlConn.disconnect(); 3449 urlConn = null; 3450 3451 if (mTestingFailures) { 3452 // Pretend no connection, this tests using http and https 3453 result = CMP_RESULT_CODE_NO_CONNECTION; 3454 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 3455 continue; 3456 } 3457 3458 if (responseCode == 204) { 3459 // Return 3460 result = CMP_RESULT_CODE_CONNECTABLE; 3461 log("isMobileOk: X got expected responseCode=" + responseCode 3462 + " result=" + result); 3463 return result; 3464 } else { 3465 // Retry to be sure this was redirected, we've gotten 3466 // occasions where a server returned 200 even though 3467 // the device didn't have a "warm" sim. 3468 log("isMobileOk: not expected responseCode=" + responseCode); 3469 // TODO - it would be nice in the single-address case to do 3470 // another DNS resolve here, but flushing the cache is a bit 3471 // heavy-handed. 3472 result = CMP_RESULT_CODE_REDIRECTED; 3473 } 3474 } catch (Exception e) { 3475 log("isMobileOk: HttpURLConnection Exception" + e); 3476 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 3477 if (urlConn != null) { 3478 urlConn.disconnect(); 3479 urlConn = null; 3480 } 3481 sleep(NET_ERROR_SLEEP_SEC); 3482 continue; 3483 } 3484 } 3485 log("isMobileOk: X loops|timed out result=" + result); 3486 return result; 3487 } catch (Exception e) { 3488 log("isMobileOk: Exception e=" + e); 3489 continue; 3490 } 3491 } 3492 log("isMobileOk: timed out"); 3493 } finally { 3494 log("isMobileOk: F stop hipri"); 3495 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 3496// mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 3497// Phone.FEATURE_ENABLE_HIPRI); 3498 3499 // Wait for hipri to disconnect. 3500 long endTime = SystemClock.elapsedRealtime() + 5000; 3501 3502 while(SystemClock.elapsedRealtime() < endTime) { 3503 NetworkInfo.State state = mCs 3504 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 3505 if (state != NetworkInfo.State.DISCONNECTED) { 3506 if (VDBG) { 3507 log("isMobileOk: connected ni=" + 3508 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 3509 } 3510 sleep(POLLING_SLEEP_SEC); 3511 continue; 3512 } 3513 } 3514 3515 log("isMobileOk: X result=" + result); 3516 } 3517 return result; 3518 } 3519 3520 @Override 3521 protected Integer doInBackground(Params... params) { 3522 return isMobileOk(params[0]); 3523 } 3524 3525 @Override 3526 protected void onPostExecute(Integer result) { 3527 log("onPostExecute: result=" + result); 3528 if ((mParams != null) && (mParams.mCb != null)) { 3529 mParams.mCb.onComplete(result); 3530 } 3531 } 3532 3533 private String inetAddressesToString(InetAddress[] addresses) { 3534 StringBuffer sb = new StringBuffer(); 3535 boolean firstTime = true; 3536 for(InetAddress addr : addresses) { 3537 if (firstTime) { 3538 firstTime = false; 3539 } else { 3540 sb.append(","); 3541 } 3542 sb.append(addr); 3543 } 3544 return sb.toString(); 3545 } 3546 3547 private void printNetworkInfo() { 3548 boolean hasIccCard = mTm.hasIccCard(); 3549 int simState = mTm.getSimState(); 3550 log("hasIccCard=" + hasIccCard 3551 + " simState=" + simState); 3552 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 3553 if (ni != null) { 3554 log("ni.length=" + ni.length); 3555 for (NetworkInfo netInfo: ni) { 3556 log("netInfo=" + netInfo.toString()); 3557 } 3558 } else { 3559 log("no network info ni=null"); 3560 } 3561 } 3562 3563 /** 3564 * Sleep for a few seconds then return. 3565 * @param seconds 3566 */ 3567 private static void sleep(int seconds) { 3568 long stopTime = System.nanoTime() + (seconds * 1000000000); 3569 long sleepTime; 3570 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 3571 try { 3572 Thread.sleep(sleepTime / 1000000); 3573 } catch (InterruptedException ignored) { 3574 } 3575 } 3576 } 3577 3578 private static void log(String s) { 3579 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 3580 } 3581 } 3582 3583 // TODO: Move to ConnectivityManager and make public? 3584 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 3585 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 3586 3587 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 3588 @Override 3589 public void onReceive(Context context, Intent intent) { 3590 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 3591 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 3592 } 3593 } 3594 }; 3595 3596 private void handleMobileProvisioningAction(String url) { 3597 // Mark notification as not visible 3598 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 3599 3600 // Check airplane mode 3601 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 3602 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 3603 // If provisioning network and not in airplane mode handle as a special case, 3604 // otherwise launch browser with the intent directly. 3605 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 3606 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 3607 mIsProvisioningNetwork.set(false); 3608// mIsStartingProvisioning.set(true); 3609// MobileDataStateTracker mdst = (MobileDataStateTracker) 3610// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3611 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 3612// mdst.setRadio(true); 3613// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 3614// mdst.enableMobileProvisioning(url); 3615 } else { 3616 if (DBG) log("handleMobileProvisioningAction: not prov network"); 3617 mIsProvisioningNetwork.set(false); 3618 // Check for apps that can handle provisioning first 3619 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 3620 List<String> carrierPackages = 3621 mTelephonyManager.getCarrierPackageNamesForIntent(provisioningIntent); 3622 if (carrierPackages != null && !carrierPackages.isEmpty()) { 3623 if (carrierPackages.size() != 1) { 3624 if (DBG) log("Multiple matching carrier apps found, launching the first."); 3625 } 3626 provisioningIntent.setPackage(carrierPackages.get(0)); 3627 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3628 Intent.FLAG_ACTIVITY_NEW_TASK); 3629 mContext.startActivity(provisioningIntent); 3630 } else { 3631 // If no apps exist, use standard URL ACTION_VIEW method 3632 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 3633 Intent.CATEGORY_APP_BROWSER); 3634 newIntent.setData(Uri.parse(url)); 3635 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3636 Intent.FLAG_ACTIVITY_NEW_TASK); 3637 try { 3638 mContext.startActivity(newIntent); 3639 } catch (ActivityNotFoundException e) { 3640 loge("handleMobileProvisioningAction: startActivity failed" + e); 3641 } 3642 } 3643 } 3644 } 3645 3646 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3647 private volatile boolean mIsNotificationVisible = false; 3648 3649 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 3650 String url) { 3651 if (DBG) { 3652 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3653 + " extraInfo=" + extraInfo + " url=" + url); 3654 } 3655 Intent intent = null; 3656 PendingIntent pendingIntent = null; 3657 if (visible) { 3658 switch (networkType) { 3659 case ConnectivityManager.TYPE_WIFI: 3660 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3661 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3662 Intent.FLAG_ACTIVITY_NEW_TASK); 3663 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3664 break; 3665 case ConnectivityManager.TYPE_MOBILE: 3666 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3667 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 3668 intent.putExtra("EXTRA_URL", url); 3669 intent.setFlags(0); 3670 pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3671 break; 3672 default: 3673 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 3674 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 3675 Intent.FLAG_ACTIVITY_NEW_TASK); 3676 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 3677 break; 3678 } 3679 } 3680 // Concatenate the range of types onto the range of NetIDs. 3681 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3682 setProvNotificationVisibleIntent(visible, id, networkType, extraInfo, pendingIntent); 3683 } 3684 3685 /** 3686 * Show or hide network provisioning notificaitons. 3687 * 3688 * @param id an identifier that uniquely identifies this notification. This must match 3689 * between show and hide calls. We use the NetID value but for legacy callers 3690 * we concatenate the range of types with the range of NetIDs. 3691 */ 3692 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3693 String extraInfo, PendingIntent intent) { 3694 if (DBG) { 3695 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3696 networkType + " extraInfo=" + extraInfo); 3697 } 3698 3699 Resources r = Resources.getSystem(); 3700 NotificationManager notificationManager = (NotificationManager) mContext 3701 .getSystemService(Context.NOTIFICATION_SERVICE); 3702 3703 if (visible) { 3704 CharSequence title; 3705 CharSequence details; 3706 int icon; 3707 Notification notification = new Notification(); 3708 switch (networkType) { 3709 case ConnectivityManager.TYPE_WIFI: 3710 title = r.getString(R.string.wifi_available_sign_in, 0); 3711 details = r.getString(R.string.network_available_sign_in_detailed, 3712 extraInfo); 3713 icon = R.drawable.stat_notify_wifi_in_range; 3714 break; 3715 case ConnectivityManager.TYPE_MOBILE: 3716 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3717 title = r.getString(R.string.network_available_sign_in, 0); 3718 // TODO: Change this to pull from NetworkInfo once a printable 3719 // name has been added to it 3720 details = mTelephonyManager.getNetworkOperatorName(); 3721 icon = R.drawable.stat_notify_rssi_in_range; 3722 break; 3723 default: 3724 title = r.getString(R.string.network_available_sign_in, 0); 3725 details = r.getString(R.string.network_available_sign_in_detailed, 3726 extraInfo); 3727 icon = R.drawable.stat_notify_rssi_in_range; 3728 break; 3729 } 3730 3731 notification.when = 0; 3732 notification.icon = icon; 3733 notification.flags = Notification.FLAG_AUTO_CANCEL; 3734 notification.tickerText = title; 3735 notification.color = mContext.getResources().getColor( 3736 com.android.internal.R.color.system_notification_accent_color); 3737 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3738 notification.contentIntent = intent; 3739 3740 try { 3741 notificationManager.notify(NOTIFICATION_ID, id, notification); 3742 } catch (NullPointerException npe) { 3743 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3744 npe.printStackTrace(); 3745 } 3746 } else { 3747 try { 3748 notificationManager.cancel(NOTIFICATION_ID, id); 3749 } catch (NullPointerException npe) { 3750 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3751 npe.printStackTrace(); 3752 } 3753 } 3754 mIsNotificationVisible = visible; 3755 } 3756 3757 /** Location to an updatable file listing carrier provisioning urls. 3758 * An example: 3759 * 3760 * <?xml version="1.0" encoding="utf-8"?> 3761 * <provisioningUrls> 3762 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3763 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3764 * </provisioningUrls> 3765 */ 3766 private static final String PROVISIONING_URL_PATH = 3767 "/data/misc/radio/provisioning_urls.xml"; 3768 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3769 3770 /** XML tag for root element. */ 3771 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3772 /** XML tag for individual url */ 3773 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3774 /** XML tag for redirected url */ 3775 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3776 /** XML attribute for mcc */ 3777 private static final String ATTR_MCC = "mcc"; 3778 /** XML attribute for mnc */ 3779 private static final String ATTR_MNC = "mnc"; 3780 3781 private static final int REDIRECTED_PROVISIONING = 1; 3782 private static final int PROVISIONING = 2; 3783 3784 private String getProvisioningUrlBaseFromFile(int type) { 3785 FileReader fileReader = null; 3786 XmlPullParser parser = null; 3787 Configuration config = mContext.getResources().getConfiguration(); 3788 String tagType; 3789 3790 switch (type) { 3791 case PROVISIONING: 3792 tagType = TAG_PROVISIONING_URL; 3793 break; 3794 case REDIRECTED_PROVISIONING: 3795 tagType = TAG_REDIRECTED_URL; 3796 break; 3797 default: 3798 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3799 type); 3800 } 3801 3802 try { 3803 fileReader = new FileReader(mProvisioningUrlFile); 3804 parser = Xml.newPullParser(); 3805 parser.setInput(fileReader); 3806 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3807 3808 while (true) { 3809 XmlUtils.nextElement(parser); 3810 3811 String element = parser.getName(); 3812 if (element == null) break; 3813 3814 if (element.equals(tagType)) { 3815 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3816 try { 3817 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3818 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3819 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3820 parser.next(); 3821 if (parser.getEventType() == XmlPullParser.TEXT) { 3822 return parser.getText(); 3823 } 3824 } 3825 } 3826 } catch (NumberFormatException e) { 3827 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3828 } 3829 } 3830 } 3831 return null; 3832 } catch (FileNotFoundException e) { 3833 loge("Carrier Provisioning Urls file not found"); 3834 } catch (XmlPullParserException e) { 3835 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3836 } catch (IOException e) { 3837 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3838 } finally { 3839 if (fileReader != null) { 3840 try { 3841 fileReader.close(); 3842 } catch (IOException e) {} 3843 } 3844 } 3845 return null; 3846 } 3847 3848 @Override 3849 public String getMobileRedirectedProvisioningUrl() { 3850 enforceConnectivityInternalPermission(); 3851 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3852 if (TextUtils.isEmpty(url)) { 3853 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3854 } 3855 return url; 3856 } 3857 3858 @Override 3859 public String getMobileProvisioningUrl() { 3860 enforceConnectivityInternalPermission(); 3861 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3862 if (TextUtils.isEmpty(url)) { 3863 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3864 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3865 } else { 3866 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3867 } 3868 // populate the iccid, imei and phone number in the provisioning url. 3869 if (!TextUtils.isEmpty(url)) { 3870 String phoneNumber = mTelephonyManager.getLine1Number(); 3871 if (TextUtils.isEmpty(phoneNumber)) { 3872 phoneNumber = "0000000000"; 3873 } 3874 url = String.format(url, 3875 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3876 mTelephonyManager.getDeviceId() /* IMEI */, 3877 phoneNumber /* Phone numer */); 3878 } 3879 3880 return url; 3881 } 3882 3883 @Override 3884 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3885 String extraInfo, String url) { 3886 enforceConnectivityInternalPermission(); 3887 setProvNotificationVisible(visible, networkType, extraInfo, url); 3888 } 3889 3890 @Override 3891 public void setAirplaneMode(boolean enable) { 3892 enforceConnectivityInternalPermission(); 3893 final long ident = Binder.clearCallingIdentity(); 3894 try { 3895 final ContentResolver cr = mContext.getContentResolver(); 3896 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3897 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3898 intent.putExtra("state", enable); 3899 mContext.sendBroadcast(intent); 3900 } finally { 3901 Binder.restoreCallingIdentity(ident); 3902 } 3903 } 3904 3905 private void onUserStart(int userId) { 3906 synchronized(mVpns) { 3907 Vpn userVpn = mVpns.get(userId); 3908 if (userVpn != null) { 3909 loge("Starting user already has a VPN"); 3910 return; 3911 } 3912 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3913 mVpns.put(userId, userVpn); 3914 } 3915 } 3916 3917 private void onUserStop(int userId) { 3918 synchronized(mVpns) { 3919 Vpn userVpn = mVpns.get(userId); 3920 if (userVpn == null) { 3921 loge("Stopping user has no VPN"); 3922 return; 3923 } 3924 mVpns.delete(userId); 3925 } 3926 } 3927 3928 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3929 @Override 3930 public void onReceive(Context context, Intent intent) { 3931 final String action = intent.getAction(); 3932 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3933 if (userId == UserHandle.USER_NULL) return; 3934 3935 if (Intent.ACTION_USER_STARTING.equals(action)) { 3936 onUserStart(userId); 3937 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3938 onUserStop(userId); 3939 } 3940 } 3941 }; 3942 3943 @Override 3944 public LinkQualityInfo getLinkQualityInfo(int networkType) { 3945 enforceAccessPermission(); 3946 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3947 return mNetTrackers[networkType].getLinkQualityInfo(); 3948 } else { 3949 return null; 3950 } 3951 } 3952 3953 @Override 3954 public LinkQualityInfo getActiveLinkQualityInfo() { 3955 enforceAccessPermission(); 3956 if (isNetworkTypeValid(mActiveDefaultNetwork) && 3957 mNetTrackers[mActiveDefaultNetwork] != null) { 3958 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 3959 } else { 3960 return null; 3961 } 3962 } 3963 3964 @Override 3965 public LinkQualityInfo[] getAllLinkQualityInfo() { 3966 enforceAccessPermission(); 3967 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 3968 for (NetworkStateTracker tracker : mNetTrackers) { 3969 if (tracker != null) { 3970 LinkQualityInfo li = tracker.getLinkQualityInfo(); 3971 if (li != null) { 3972 result.add(li); 3973 } 3974 } 3975 } 3976 3977 return result.toArray(new LinkQualityInfo[result.size()]); 3978 } 3979 3980 /* Infrastructure for network sampling */ 3981 3982 private void handleNetworkSamplingTimeout() { 3983 3984 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3985 3986 // initialize list of interfaces .. 3987 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3988 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3989 for (NetworkStateTracker tracker : mNetTrackers) { 3990 if (tracker != null) { 3991 String ifaceName = tracker.getNetworkInterfaceName(); 3992 if (ifaceName != null) { 3993 mapIfaceToSample.put(ifaceName, null); 3994 } 3995 } 3996 } 3997 3998 // Read samples for all interfaces 3999 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4000 4001 // process samples for all networks 4002 for (NetworkStateTracker tracker : mNetTrackers) { 4003 if (tracker != null) { 4004 String ifaceName = tracker.getNetworkInterfaceName(); 4005 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 4006 if (ss != null) { 4007 // end the previous sampling cycle 4008 tracker.stopSampling(ss); 4009 // start a new sampling cycle .. 4010 tracker.startSampling(ss); 4011 } 4012 } 4013 } 4014 4015 if (SAMPLE_DBG) log("Done."); 4016 4017 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 4018 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 4019 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 4020 4021 if (SAMPLE_DBG) { 4022 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 4023 } 4024 4025 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 4026 } 4027 4028 /** 4029 * Sets a network sampling alarm. 4030 */ 4031 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 4032 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 4033 int alarmType; 4034 if (Resources.getSystem().getBoolean( 4035 R.bool.config_networkSamplingWakesDevice)) { 4036 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 4037 } else { 4038 alarmType = AlarmManager.ELAPSED_REALTIME; 4039 } 4040 mAlarmManager.set(alarmType, wakeupTime, intent); 4041 } 4042 4043 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 4044 new HashMap<Messenger, NetworkFactoryInfo>(); 4045 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 4046 new HashMap<NetworkRequest, NetworkRequestInfo>(); 4047 4048 private static class NetworkFactoryInfo { 4049 public final String name; 4050 public final Messenger messenger; 4051 public final AsyncChannel asyncChannel; 4052 4053 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 4054 this.name = name; 4055 this.messenger = messenger; 4056 this.asyncChannel = asyncChannel; 4057 } 4058 } 4059 4060 /** 4061 * Tracks info about the requester. 4062 * Also used to notice when the calling process dies so we can self-expire 4063 */ 4064 private class NetworkRequestInfo implements IBinder.DeathRecipient { 4065 static final boolean REQUEST = true; 4066 static final boolean LISTEN = false; 4067 4068 final NetworkRequest request; 4069 IBinder mBinder; 4070 final int mPid; 4071 final int mUid; 4072 final Messenger messenger; 4073 final boolean isRequest; 4074 4075 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 4076 super(); 4077 messenger = m; 4078 request = r; 4079 mBinder = binder; 4080 mPid = getCallingPid(); 4081 mUid = getCallingUid(); 4082 this.isRequest = isRequest; 4083 4084 try { 4085 mBinder.linkToDeath(this, 0); 4086 } catch (RemoteException e) { 4087 binderDied(); 4088 } 4089 } 4090 4091 void unlinkDeathRecipient() { 4092 mBinder.unlinkToDeath(this, 0); 4093 } 4094 4095 public void binderDied() { 4096 log("ConnectivityService NetworkRequestInfo binderDied(" + 4097 request + ", " + mBinder + ")"); 4098 releaseNetworkRequest(request); 4099 } 4100 4101 public String toString() { 4102 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 4103 mPid + " for " + request; 4104 } 4105 } 4106 4107 @Override 4108 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 4109 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 4110 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 4111 == false) { 4112 enforceConnectivityInternalPermission(); 4113 } else { 4114 enforceChangePermission(); 4115 } 4116 4117 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4118 4119 // if UID is restricted, don't allow them to bring up metered APNs 4120 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 4121 == false) { 4122 final int uidRules; 4123 synchronized(mRulesLock) { 4124 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 4125 } 4126 if ((uidRules & RULE_REJECT_METERED) != 0) { 4127 // we could silently fail or we can filter the available nets to only give 4128 // them those they have access to. Chose the more useful 4129 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 4130 } 4131 } 4132 4133 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 4134 throw new IllegalArgumentException("Bad timeout specified"); 4135 } 4136 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 4137 nextNetworkRequestId()); 4138 if (DBG) log("requestNetwork for " + networkRequest); 4139 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4140 NetworkRequestInfo.REQUEST); 4141 4142 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 4143 if (timeoutMs > 0) { 4144 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 4145 nri), timeoutMs); 4146 } 4147 return networkRequest; 4148 } 4149 4150 @Override 4151 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4152 PendingIntent operation) { 4153 // TODO 4154 return null; 4155 } 4156 4157 @Override 4158 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4159 Messenger messenger, IBinder binder) { 4160 enforceAccessPermission(); 4161 4162 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 4163 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4164 if (DBG) log("listenForNetwork for " + networkRequest); 4165 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4166 NetworkRequestInfo.LISTEN); 4167 4168 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4169 return networkRequest; 4170 } 4171 4172 @Override 4173 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4174 PendingIntent operation) { 4175 } 4176 4177 @Override 4178 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4179 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4180 0, networkRequest)); 4181 } 4182 4183 @Override 4184 public void registerNetworkFactory(Messenger messenger, String name) { 4185 enforceConnectivityInternalPermission(); 4186 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4187 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4188 } 4189 4190 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4191 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4192 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4193 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4194 } 4195 4196 @Override 4197 public void unregisterNetworkFactory(Messenger messenger) { 4198 enforceConnectivityInternalPermission(); 4199 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4200 } 4201 4202 private void handleUnregisterNetworkFactory(Messenger messenger) { 4203 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4204 if (nfi == null) { 4205 loge("Failed to find Messenger in unregisterNetworkFactory"); 4206 return; 4207 } 4208 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4209 } 4210 4211 /** 4212 * NetworkAgentInfo supporting a request by requestId. 4213 * These have already been vetted (their Capabilities satisfy the request) 4214 * and the are the highest scored network available. 4215 * the are keyed off the Requests requestId. 4216 */ 4217 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4218 new SparseArray<NetworkAgentInfo>(); 4219 4220 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4221 new SparseArray<NetworkAgentInfo>(); 4222 4223 // NetworkAgentInfo keyed off its connecting messenger 4224 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4225 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4226 new HashMap<Messenger, NetworkAgentInfo>(); 4227 4228 private final NetworkRequest mDefaultRequest; 4229 4230 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4231 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 4232 } 4233 4234 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4235 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4236 int currentScore, NetworkMisc networkMisc) { 4237 enforceConnectivityInternalPermission(); 4238 4239 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4240 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 4241 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 4242 networkMisc); 4243 synchronized (this) { 4244 nai.networkMonitor.systemReady = mSystemReady; 4245 } 4246 if (DBG) log("registerNetworkAgent " + nai); 4247 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4248 } 4249 4250 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4251 if (VDBG) log("Got NetworkAgent Messenger"); 4252 mNetworkAgentInfos.put(na.messenger, na); 4253 assignNextNetId(na); 4254 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4255 NetworkInfo networkInfo = na.networkInfo; 4256 na.networkInfo = null; 4257 updateNetworkInfo(na, networkInfo); 4258 } 4259 4260 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4261 LinkProperties newLp = networkAgent.linkProperties; 4262 int netId = networkAgent.network.netId; 4263 4264 updateInterfaces(newLp, oldLp, netId); 4265 updateMtu(newLp, oldLp); 4266 updateTcpBufferSizes(networkAgent); 4267 // TODO - figure out what to do for clat 4268// for (LinkProperties lp : newLp.getStackedLinks()) { 4269// updateMtu(lp, null); 4270// } 4271 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 4272 updateDnses(newLp, oldLp, netId, flushDns); 4273 updateClat(newLp, oldLp, networkAgent); 4274 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 4275 } 4276 4277 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 4278 // Update 464xlat state. 4279 if (mClat.requiresClat(na)) { 4280 4281 // If the connection was previously using clat, but is not using it now, stop the clat 4282 // daemon. Normally, this happens automatically when the connection disconnects, but if 4283 // the disconnect is not reported, or if the connection's LinkProperties changed for 4284 // some other reason (e.g., handoff changes the IP addresses on the link), it would 4285 // still be running. If it's not running, then stopping it is a no-op. 4286 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 4287 mClat.stopClat(); 4288 } 4289 // If the link requires clat to be running, then start the daemon now. 4290 if (na.networkInfo.isConnected()) { 4291 mClat.startClat(na); 4292 } else { 4293 mClat.stopClat(); 4294 } 4295 } 4296 } 4297 4298 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4299 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4300 if (oldLp != null) { 4301 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4302 } else if (newLp != null) { 4303 interfaceDiff.added = newLp.getAllInterfaceNames(); 4304 } 4305 for (String iface : interfaceDiff.added) { 4306 try { 4307 if (DBG) log("Adding iface " + iface + " to network " + netId); 4308 mNetd.addInterfaceToNetwork(iface, netId); 4309 } catch (Exception e) { 4310 loge("Exception adding interface: " + e); 4311 } 4312 } 4313 for (String iface : interfaceDiff.removed) { 4314 try { 4315 if (DBG) log("Removing iface " + iface + " from network " + netId); 4316 mNetd.removeInterfaceFromNetwork(iface, netId); 4317 } catch (Exception e) { 4318 loge("Exception removing interface: " + e); 4319 } 4320 } 4321 } 4322 4323 /** 4324 * Have netd update routes from oldLp to newLp. 4325 * @return true if routes changed between oldLp and newLp 4326 */ 4327 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4328 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4329 if (oldLp != null) { 4330 routeDiff = oldLp.compareAllRoutes(newLp); 4331 } else if (newLp != null) { 4332 routeDiff.added = newLp.getAllRoutes(); 4333 } 4334 4335 // add routes before removing old in case it helps with continuous connectivity 4336 4337 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4338 for (RouteInfo route : routeDiff.added) { 4339 if (route.hasGateway()) continue; 4340 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4341 try { 4342 mNetd.addRoute(netId, route); 4343 } catch (Exception e) { 4344 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4345 loge("Exception in addRoute for non-gateway: " + e); 4346 } 4347 } 4348 } 4349 for (RouteInfo route : routeDiff.added) { 4350 if (route.hasGateway() == false) 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.getGateway() instanceof Inet4Address) || VDBG) { 4356 loge("Exception in addRoute for gateway: " + e); 4357 } 4358 } 4359 } 4360 4361 for (RouteInfo route : routeDiff.removed) { 4362 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4363 try { 4364 mNetd.removeRoute(netId, route); 4365 } catch (Exception e) { 4366 loge("Exception in removeRoute: " + e); 4367 } 4368 } 4369 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4370 } 4371 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) { 4372 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4373 Collection<InetAddress> dnses = newLp.getDnsServers(); 4374 if (dnses.size() == 0 && mDefaultDns != null) { 4375 dnses = new ArrayList(); 4376 dnses.add(mDefaultDns); 4377 if (DBG) { 4378 loge("no dns provided for netId " + netId + ", so using defaults"); 4379 } 4380 } 4381 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4382 try { 4383 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4384 newLp.getDomains()); 4385 } catch (Exception e) { 4386 loge("Exception in setDnsServersForNetwork: " + e); 4387 } 4388 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4389 if (defaultNai != null && defaultNai.network.netId == netId) { 4390 setDefaultDnsSystemProperties(dnses); 4391 } 4392 flushVmDnsCache(); 4393 } else if (flush) { 4394 try { 4395 mNetd.flushNetworkDnsCache(netId); 4396 } catch (Exception e) { 4397 loge("Exception in flushNetworkDnsCache: " + e); 4398 } 4399 flushVmDnsCache(); 4400 } 4401 } 4402 4403 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4404 int last = 0; 4405 for (InetAddress dns : dnses) { 4406 ++last; 4407 String key = "net.dns" + last; 4408 String value = dns.getHostAddress(); 4409 SystemProperties.set(key, value); 4410 } 4411 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4412 String key = "net.dns" + i; 4413 SystemProperties.set(key, ""); 4414 } 4415 mNumDnsEntries = last; 4416 } 4417 4418 4419 private void updateCapabilities(NetworkAgentInfo networkAgent, 4420 NetworkCapabilities networkCapabilities) { 4421 // TODO - what else here? Verify still satisfies everybody? 4422 // Check if satisfies somebody new? call callbacks? 4423 synchronized (networkAgent) { 4424 networkAgent.networkCapabilities = networkCapabilities; 4425 } 4426 } 4427 4428 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4429 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4430 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4431 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4432 networkRequest); 4433 } 4434 } 4435 4436 private void callCallbackForRequest(NetworkRequestInfo nri, 4437 NetworkAgentInfo networkAgent, int notificationType) { 4438 if (nri.messenger == null) return; // Default request has no msgr 4439 Object o; 4440 int a1 = 0; 4441 int a2 = 0; 4442 switch (notificationType) { 4443 case ConnectivityManager.CALLBACK_LOSING: 4444 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 4445 // fall through 4446 case ConnectivityManager.CALLBACK_PRECHECK: 4447 case ConnectivityManager.CALLBACK_AVAILABLE: 4448 case ConnectivityManager.CALLBACK_LOST: 4449 case ConnectivityManager.CALLBACK_CAP_CHANGED: 4450 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4451 o = new NetworkRequest(nri.request); 4452 a2 = networkAgent.network.netId; 4453 break; 4454 } 4455 case ConnectivityManager.CALLBACK_UNAVAIL: 4456 case ConnectivityManager.CALLBACK_RELEASED: { 4457 o = new NetworkRequest(nri.request); 4458 break; 4459 } 4460 default: { 4461 loge("Unknown notificationType " + notificationType); 4462 return; 4463 } 4464 } 4465 Message msg = Message.obtain(); 4466 msg.arg1 = a1; 4467 msg.arg2 = a2; 4468 msg.obj = o; 4469 msg.what = notificationType; 4470 try { 4471 if (VDBG) { 4472 log("sending notification " + notifyTypeToName(notificationType) + 4473 " for " + nri.request); 4474 } 4475 nri.messenger.send(msg); 4476 } catch (RemoteException e) { 4477 // may occur naturally in the race of binder death. 4478 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4479 } 4480 } 4481 4482 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4483 if (oldNetwork == null) { 4484 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4485 return; 4486 } 4487 if (DBG) { 4488 log("handleLingerComplete for " + oldNetwork.name()); 4489 for (int i = 0; i < oldNetwork.networkRequests.size(); i++) { 4490 NetworkRequest nr = oldNetwork.networkRequests.valueAt(i); 4491 // Ignore listening requests. 4492 if (mNetworkRequests.get(nr).isRequest == false) continue; 4493 loge("Dead network still had at least " + nr); 4494 break; 4495 } 4496 } 4497 oldNetwork.asyncChannel.disconnect(); 4498 } 4499 4500 private void makeDefault(NetworkAgentInfo newNetwork) { 4501 if (DBG) log("Switching to new default network: " + newNetwork); 4502 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4503 setupDataActivityTracking(newNetwork); 4504 try { 4505 mNetd.setDefaultNetId(newNetwork.network.netId); 4506 } catch (Exception e) { 4507 loge("Exception setting default network :" + e); 4508 } 4509 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4510 updateTcpBufferSizes(newNetwork); 4511 } 4512 4513 // Handles a network appearing or improving its score. 4514 // 4515 // - Evaluates all current NetworkRequests that can be 4516 // satisfied by newNetwork, and reassigns to newNetwork 4517 // any such requests for which newNetwork is the best. 4518 // 4519 // - Tears down any Networks that as a result are no longer 4520 // needed. A network is needed if it is the best network for 4521 // one or more NetworkRequests, or if it is a VPN. 4522 // 4523 // - Tears down newNetwork if it is validated but turns out to be 4524 // unneeded. Does not tear down newNetwork if it is 4525 // unvalidated, because future validation may improve 4526 // newNetwork's score enough that it is needed. 4527 // 4528 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4529 // it does not remove NetworkRequests that other Networks could better satisfy. 4530 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4531 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4532 // as it performs better by a factor of the number of Networks. 4533 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork) { 4534 boolean keep = newNetwork.isVPN(); 4535 boolean isNewDefault = false; 4536 if (DBG) log("rematching " + newNetwork.name()); 4537 // Find and migrate to this Network any NetworkRequests for 4538 // which this network is now the best. 4539 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4540 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4541 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4542 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4543 if (newNetwork == currentNetwork) { 4544 if (DBG) log("Network " + newNetwork.name() + " was already satisfying" + 4545 " request " + nri.request.requestId + ". No change."); 4546 keep = true; 4547 continue; 4548 } 4549 4550 // check if it satisfies the NetworkCapabilities 4551 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4552 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 4553 newNetwork.networkCapabilities)) { 4554 if (!nri.isRequest) { 4555 // This is not a request, it's a callback listener. 4556 // Add it to newNetwork regardless of score. 4557 newNetwork.addRequest(nri.request); 4558 continue; 4559 } 4560 4561 // next check if it's better than any current network we're using for 4562 // this request 4563 if (VDBG) { 4564 log("currentScore = " + 4565 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4566 ", newScore = " + newNetwork.getCurrentScore()); 4567 } 4568 if (currentNetwork == null || 4569 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4570 if (currentNetwork != null) { 4571 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4572 currentNetwork.networkRequests.remove(nri.request.requestId); 4573 currentNetwork.networkLingered.add(nri.request); 4574 affectedNetworks.add(currentNetwork); 4575 } else { 4576 if (DBG) log(" accepting network in place of null"); 4577 } 4578 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4579 newNetwork.addRequest(nri.request); 4580 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4581 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4582 } 4583 keep = true; 4584 // Tell NetworkFactories about the new score, so they can stop 4585 // trying to connect if they know they cannot match it. 4586 // TODO - this could get expensive if we have alot of requests for this 4587 // network. Think about if there is a way to reduce this. Push 4588 // netid->request mapping to each factory? 4589 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4590 if (mDefaultRequest.requestId == nri.request.requestId) { 4591 isNewDefault = true; 4592 // TODO: Remove following line. It's redundant with makeDefault call. 4593 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4594 if (newNetwork.linkProperties != null) { 4595 updateTcpBufferSizes(newNetwork); 4596 setDefaultDnsSystemProperties( 4597 newNetwork.linkProperties.getDnsServers()); 4598 } else { 4599 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4600 } 4601 // Maintain the illusion: since the legacy API only 4602 // understands one network at a time, we must pretend 4603 // that the current default network disconnected before 4604 // the new one connected. 4605 if (currentNetwork != null) { 4606 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4607 currentNetwork); 4608 } 4609 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4610 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4611 } 4612 } 4613 } 4614 } 4615 // Linger any networks that are no longer needed. 4616 for (NetworkAgentInfo nai : affectedNetworks) { 4617 boolean teardown = !nai.isVPN(); 4618 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4619 NetworkRequest nr = nai.networkRequests.valueAt(i); 4620 try { 4621 if (mNetworkRequests.get(nr).isRequest) { 4622 teardown = false; 4623 } 4624 } catch (Exception e) { 4625 loge("Request " + nr + " not found in mNetworkRequests."); 4626 loge(" it came from request list of " + nai.name()); 4627 } 4628 } 4629 if (teardown) { 4630 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4631 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4632 } else { 4633 // not going to linger, so kill the list of linger networks.. only 4634 // notify them of linger if it happens as the result of gaining another, 4635 // but if they transition and old network stays up, don't tell them of linger 4636 // or very delayed loss 4637 nai.networkLingered.clear(); 4638 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 4639 } 4640 } 4641 if (keep) { 4642 if (isNewDefault) { 4643 // Notify system services that this network is up. 4644 makeDefault(newNetwork); 4645 synchronized (ConnectivityService.this) { 4646 // have a new default network, release the transition wakelock in 4647 // a second if it's held. The second pause is to allow apps 4648 // to reconnect over the new network 4649 if (mNetTransitionWakeLock.isHeld()) { 4650 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4651 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4652 mNetTransitionWakeLockSerialNumber, 0), 4653 1000); 4654 } 4655 } 4656 } 4657 4658 // Notify battery stats service about this network, both the normal 4659 // interface and any stacked links. 4660 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4661 try { 4662 final IBatteryStats bs = BatteryStatsService.getService(); 4663 final int type = newNetwork.networkInfo.getType(); 4664 4665 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4666 bs.noteNetworkInterfaceType(baseIface, type); 4667 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4668 final String stackedIface = stacked.getInterfaceName(); 4669 bs.noteNetworkInterfaceType(stackedIface, type); 4670 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4671 } 4672 } catch (RemoteException ignored) { 4673 } 4674 4675 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4676 } else if (newNetwork.validated) { 4677 // Only tear down validated networks here. Leave unvalidated to either become 4678 // validated (and get evaluated against peers, one losing here) or 4679 // NetworkMonitor reports a bad network and we tear it down then. 4680 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 4681 // satisfy no NetworkRequests. 4682 if (DBG && newNetwork.networkRequests.size() != 0) { 4683 loge("tearing down network with live requests:"); 4684 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 4685 loge(" " + newNetwork.networkRequests.valueAt(i)); 4686 } 4687 } 4688 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4689 newNetwork.asyncChannel.disconnect(); 4690 } 4691 } 4692 4693 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4694 // being disconnected. 4695 // If only one Network's score or capabilities have been modified since the last time 4696 // this function was called, pass this Network in via the "changed" arugment, otherwise 4697 // pass null. 4698 // If only one Network has been changed but its NetworkCapabilities have not changed, 4699 // pass in the Network's score (from getCurrentScore()) prior to the change via 4700 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4701 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4702 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4703 // to avoid the slowness. It is not simply enough to process just "changed", for 4704 // example in the case where "changed"'s score decreases and another network should begin 4705 // satifying a NetworkRequest that "changed" currently satisfies. 4706 4707 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4708 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4709 // rematchNetworkAndRequests() handles. 4710 if (changed != null && oldScore < changed.getCurrentScore()) { 4711 rematchNetworkAndRequests(changed); 4712 } else { 4713 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4714 rematchNetworkAndRequests(nai); 4715 } 4716 } 4717 } 4718 4719 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4720 NetworkInfo.State state = newInfo.getState(); 4721 NetworkInfo oldInfo = null; 4722 synchronized (networkAgent) { 4723 oldInfo = networkAgent.networkInfo; 4724 networkAgent.networkInfo = newInfo; 4725 } 4726 if (networkAgent.isVPN() && mLockdownTracker != null) { 4727 mLockdownTracker.onVpnStateChanged(newInfo); 4728 } 4729 4730 if (oldInfo != null && oldInfo.getState() == state) { 4731 if (VDBG) log("ignoring duplicate network state non-change"); 4732 return; 4733 } 4734 if (DBG) { 4735 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4736 (oldInfo == null ? "null" : oldInfo.getState()) + 4737 " to " + state); 4738 } 4739 4740 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4741 try { 4742 // This should never fail. Specifying an already in use NetID will cause failure. 4743 if (networkAgent.isVPN()) { 4744 mNetd.createVirtualNetwork(networkAgent.network.netId, 4745 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4746 (networkAgent.networkMisc == null || 4747 !networkAgent.networkMisc.allowBypass)); 4748 } else { 4749 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4750 } 4751 } catch (Exception e) { 4752 loge("Error creating network " + networkAgent.network.netId + ": " 4753 + e.getMessage()); 4754 return; 4755 } 4756 networkAgent.created = true; 4757 updateLinkProperties(networkAgent, null); 4758 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4759 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4760 if (networkAgent.isVPN()) { 4761 // Temporarily disable the default proxy (not global). 4762 synchronized (mProxyLock) { 4763 if (!mDefaultProxyDisabled) { 4764 mDefaultProxyDisabled = true; 4765 if (mGlobalProxy == null && mDefaultProxy != null) { 4766 sendProxyBroadcast(null); 4767 } 4768 } 4769 } 4770 // TODO: support proxy per network. 4771 } 4772 // Consider network even though it is not yet validated. 4773 // TODO: All the if-statement conditions can be removed now that validation only confers 4774 // a score increase. 4775 if (mNetworkForRequestId.get(mDefaultRequest.requestId) == null && 4776 networkAgent.isVPN() == false && 4777 mDefaultRequest.networkCapabilities.satisfiedByNetworkCapabilities( 4778 networkAgent.networkCapabilities)) { 4779 rematchNetworkAndRequests(networkAgent); 4780 } 4781 } else if (state == NetworkInfo.State.DISCONNECTED || 4782 state == NetworkInfo.State.SUSPENDED) { 4783 networkAgent.asyncChannel.disconnect(); 4784 if (networkAgent.isVPN()) { 4785 synchronized (mProxyLock) { 4786 if (mDefaultProxyDisabled) { 4787 mDefaultProxyDisabled = false; 4788 if (mGlobalProxy == null && mDefaultProxy != null) { 4789 sendProxyBroadcast(mDefaultProxy); 4790 } 4791 } 4792 } 4793 } 4794 } 4795 } 4796 4797 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4798 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4799 if (score < 0) { 4800 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4801 "). Bumping score to min of 0"); 4802 score = 0; 4803 } 4804 4805 final int oldScore = nai.getCurrentScore(); 4806 nai.setCurrentScore(score); 4807 4808 if (nai.created) rematchAllNetworksAndRequests(nai, oldScore); 4809 4810 for (int i = 0; i < nai.networkRequests.size(); i++) { 4811 NetworkRequest nr = nai.networkRequests.valueAt(i); 4812 // Don't send listening requests to factories. b/17393458 4813 if (mNetworkRequests.get(nr).isRequest == false) continue; 4814 sendUpdatedScoreToFactories(nr, score); 4815 } 4816 } 4817 4818 // notify only this one new request of the current state 4819 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4820 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4821 // TODO - read state from monitor to decide what to send. 4822// if (nai.networkMonitor.isLingering()) { 4823// notifyType = NetworkCallbacks.LOSING; 4824// } else if (nai.networkMonitor.isEvaluating()) { 4825// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4826// } 4827 callCallbackForRequest(nri, nai, notifyType); 4828 } 4829 4830 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4831 // The NetworkInfo we actually send out has no bearing on the real 4832 // state of affairs. For example, if the default connection is mobile, 4833 // and a request for HIPRI has just gone away, we need to pretend that 4834 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4835 // the state to DISCONNECTED, even though the network is of type MOBILE 4836 // and is still connected. 4837 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4838 info.setType(type); 4839 if (connected) { 4840 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4841 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4842 } else { 4843 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4844 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4845 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4846 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4847 if (info.isFailover()) { 4848 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4849 nai.networkInfo.setFailover(false); 4850 } 4851 if (info.getReason() != null) { 4852 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4853 } 4854 if (info.getExtraInfo() != null) { 4855 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4856 } 4857 NetworkAgentInfo newDefaultAgent = null; 4858 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4859 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4860 if (newDefaultAgent != null) { 4861 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4862 newDefaultAgent.networkInfo); 4863 } else { 4864 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4865 } 4866 } 4867 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4868 mDefaultInetConditionPublished); 4869 final Intent immediateIntent = new Intent(intent); 4870 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4871 sendStickyBroadcast(immediateIntent); 4872 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4873 if (newDefaultAgent != null) { 4874 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4875 getConnectivityChangeDelay()); 4876 } 4877 } 4878 } 4879 4880 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4881 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4882 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4883 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4884 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4885 if (VDBG) log(" sending notification for " + nr); 4886 callCallbackForRequest(nri, networkAgent, notifyType); 4887 } 4888 } 4889 4890 private String notifyTypeToName(int notifyType) { 4891 switch (notifyType) { 4892 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4893 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4894 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4895 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4896 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4897 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4898 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4899 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4900 } 4901 return "UNKNOWN"; 4902 } 4903 4904 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 4905 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4906 if (nai != null) { 4907 synchronized (nai) { 4908 return new LinkProperties(nai.linkProperties); 4909 } 4910 } 4911 return new LinkProperties(); 4912 } 4913 4914 private NetworkInfo getNetworkInfoForType(int networkType) { 4915 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 4916 return null; 4917 4918 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4919 if (nai != null) { 4920 NetworkInfo result = new NetworkInfo(nai.networkInfo); 4921 result.setType(networkType); 4922 return result; 4923 } else { 4924 NetworkInfo result = new NetworkInfo( 4925 networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), ""); 4926 result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 4927 return result; 4928 } 4929 } 4930 4931 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 4932 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4933 if (nai != null) { 4934 synchronized (nai) { 4935 return new NetworkCapabilities(nai.networkCapabilities); 4936 } 4937 } 4938 return new NetworkCapabilities(); 4939 } 4940 4941 @Override 4942 public boolean addVpnAddress(String address, int prefixLength) { 4943 throwIfLockdownEnabled(); 4944 int user = UserHandle.getUserId(Binder.getCallingUid()); 4945 synchronized (mVpns) { 4946 return mVpns.get(user).addAddress(address, prefixLength); 4947 } 4948 } 4949 4950 @Override 4951 public boolean removeVpnAddress(String address, int prefixLength) { 4952 throwIfLockdownEnabled(); 4953 int user = UserHandle.getUserId(Binder.getCallingUid()); 4954 synchronized (mVpns) { 4955 return mVpns.get(user).removeAddress(address, prefixLength); 4956 } 4957 } 4958} 4959