ConnectivityService.java revision f4ffaa4f57a8af4452f27e47ca65ee85fa0a60dc
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_NONE; 24import static android.net.ConnectivityManager.TYPE_VPN; 25import static android.net.ConnectivityManager.getNetworkTypeName; 26import static android.net.ConnectivityManager.isNetworkTypeValid; 27import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 28import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 29 30import android.app.AlarmManager; 31import android.app.Notification; 32import android.app.NotificationManager; 33import android.app.PendingIntent; 34import android.content.BroadcastReceiver; 35import android.content.ContentResolver; 36import android.content.Context; 37import android.content.Intent; 38import android.content.IntentFilter; 39import android.content.pm.PackageManager; 40import android.content.res.Configuration; 41import android.content.res.Resources; 42import android.database.ContentObserver; 43import android.net.ConnectivityManager; 44import android.net.IConnectivityManager; 45import android.net.INetworkManagementEventObserver; 46import android.net.INetworkPolicyListener; 47import android.net.INetworkPolicyManager; 48import android.net.INetworkStatsService; 49import android.net.LinkProperties; 50import android.net.LinkProperties.CompareResult; 51import android.net.MobileDataStateTracker; 52import android.net.Network; 53import android.net.NetworkAgent; 54import android.net.NetworkCapabilities; 55import android.net.NetworkConfig; 56import android.net.NetworkInfo; 57import android.net.NetworkInfo.DetailedState; 58import android.net.NetworkMisc; 59import android.net.NetworkQuotaInfo; 60import android.net.NetworkRequest; 61import android.net.NetworkState; 62import android.net.NetworkStateTracker; 63import android.net.NetworkUtils; 64import android.net.Proxy; 65import android.net.ProxyInfo; 66import android.net.RouteInfo; 67import android.net.SamplingDataTracker; 68import android.net.UidRange; 69import android.net.Uri; 70import android.os.Binder; 71import android.os.Bundle; 72import android.os.FileUtils; 73import android.os.Handler; 74import android.os.HandlerThread; 75import android.os.IBinder; 76import android.os.INetworkManagementService; 77import android.os.Looper; 78import android.os.Message; 79import android.os.Messenger; 80import android.os.ParcelFileDescriptor; 81import android.os.PowerManager; 82import android.os.Process; 83import android.os.RemoteException; 84import android.os.SystemClock; 85import android.os.SystemProperties; 86import android.os.UserHandle; 87import android.os.UserManager; 88import android.provider.Settings; 89import android.security.Credentials; 90import android.security.KeyStore; 91import android.telephony.TelephonyManager; 92import android.text.TextUtils; 93import android.util.Slog; 94import android.util.SparseArray; 95import android.util.SparseIntArray; 96import android.util.Xml; 97 98import com.android.internal.R; 99import com.android.internal.annotations.GuardedBy; 100import com.android.internal.app.IBatteryStats; 101import com.android.internal.net.LegacyVpnInfo; 102import com.android.internal.net.NetworkStatsFactory; 103import com.android.internal.net.VpnConfig; 104import com.android.internal.net.VpnProfile; 105import com.android.internal.telephony.DctConstants; 106import com.android.internal.util.AsyncChannel; 107import com.android.internal.util.IndentingPrintWriter; 108import com.android.internal.util.XmlUtils; 109import com.android.server.am.BatteryStatsService; 110import com.android.server.connectivity.DataConnectionStats; 111import com.android.server.connectivity.Nat464Xlat; 112import com.android.server.connectivity.NetworkAgentInfo; 113import com.android.server.connectivity.NetworkMonitor; 114import com.android.server.connectivity.PacManager; 115import com.android.server.connectivity.PermissionMonitor; 116import com.android.server.connectivity.Tethering; 117import com.android.server.connectivity.Vpn; 118import com.android.server.net.BaseNetworkObserver; 119import com.android.server.net.LockdownVpnTracker; 120import com.google.android.collect.Lists; 121import com.google.android.collect.Sets; 122 123import org.xmlpull.v1.XmlPullParser; 124import org.xmlpull.v1.XmlPullParserException; 125 126import java.io.File; 127import java.io.FileDescriptor; 128import java.io.FileNotFoundException; 129import java.io.FileReader; 130import java.io.IOException; 131import java.io.PrintWriter; 132import java.net.Inet4Address; 133import java.net.InetAddress; 134import java.net.UnknownHostException; 135import java.util.ArrayList; 136import java.util.Arrays; 137import java.util.Collection; 138import java.util.HashMap; 139import java.util.HashSet; 140import java.util.Iterator; 141import java.util.List; 142import java.util.Map; 143import java.util.Objects; 144import java.util.concurrent.atomic.AtomicInteger; 145 146/** 147 * @hide 148 */ 149public class ConnectivityService extends IConnectivityManager.Stub 150 implements PendingIntent.OnFinished { 151 private static final String TAG = "ConnectivityService"; 152 153 private static final boolean DBG = true; 154 private static final boolean VDBG = false; 155 156 // network sampling debugging 157 private static final boolean SAMPLE_DBG = false; 158 159 private static final boolean LOGD_RULES = false; 160 161 // TODO: create better separation between radio types and network types 162 163 // how long to wait before switching back to a radio's default network 164 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 165 // system property that can override the above value 166 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 167 "android.telephony.apn-restore"; 168 169 // Default value if FAIL_FAST_TIME_MS is not set 170 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 171 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 172 private static final String FAIL_FAST_TIME_MS = 173 "persist.radio.fail_fast_time_ms"; 174 175 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 176 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 177 178 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 179 180 // How long to delay to removal of a pending intent based request. 181 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 182 private final int mReleasePendingIntentDelayMs; 183 184 private PendingIntent mSampleIntervalElapsedIntent; 185 186 // Set network sampling interval at 12 minutes, this way, even if the timers get 187 // aggregated, it will fire at around 15 minutes, which should allow us to 188 // aggregate this timer with other timers (specially the socket keep alive timers) 189 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 190 191 // start network sampling a minute after booting ... 192 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 193 194 AlarmManager mAlarmManager; 195 196 private Tethering mTethering; 197 198 private final PermissionMonitor mPermissionMonitor; 199 200 private KeyStore mKeyStore; 201 202 @GuardedBy("mVpns") 203 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 204 205 private boolean mLockdownEnabled; 206 private LockdownVpnTracker mLockdownTracker; 207 208 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 209 private Object mRulesLock = new Object(); 210 /** Currently active network rules by UID. */ 211 private SparseIntArray mUidRules = new SparseIntArray(); 212 /** Set of ifaces that are costly. */ 213 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 214 215 /** 216 * Sometimes we want to refer to the individual network state 217 * trackers separately, and sometimes we just want to treat them 218 * abstractly. 219 */ 220 private NetworkStateTracker mNetTrackers[]; 221 222 private Context mContext; 223 private int mNetworkPreference; 224 // 0 is full bad, 100 is full good 225 private int mDefaultInetConditionPublished = 0; 226 227 private Object mDnsLock = new Object(); 228 private int mNumDnsEntries; 229 230 private boolean mTestMode; 231 private static ConnectivityService sServiceInstance; 232 233 private INetworkManagementService mNetd; 234 private INetworkStatsService mStatsService; 235 private INetworkPolicyManager mPolicyManager; 236 237 private String mCurrentTcpBufferSizes; 238 239 private static final int ENABLED = 1; 240 private static final int DISABLED = 0; 241 242 // Arguments to rematchNetworkAndRequests() 243 private enum NascentState { 244 // Indicates a network was just validated for the first time. If the network is found to 245 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 246 JUST_VALIDATED, 247 // Indicates a network was not validated for the first time immediately prior to this call. 248 NOT_JUST_VALIDATED 249 }; 250 private enum ReapUnvalidatedNetworks { 251 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 252 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 253 // known that there may be unvalidated networks that could potentially be reaped, and when 254 // all networks have been rematched against all NetworkRequests. 255 REAP, 256 // Don't reap unvalidated networks. This should be passed when it's known that there are 257 // no unvalidated networks that could potentially be reaped, and when some networks have 258 // not yet been rematched against all NetworkRequests. 259 DONT_REAP 260 }; 261 262 /** 263 * used internally to change our mobile data enabled flag 264 */ 265 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 266 267 /** 268 * used internally to clear a wakelock when transitioning 269 * from one net to another. Clear happens when we get a new 270 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 271 * after a timeout if no network is found (typically 1 min). 272 */ 273 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 274 275 /** 276 * used internally to reload global proxy settings 277 */ 278 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 279 280 /** 281 * used internally to set external dependency met/unmet 282 * arg1 = ENABLED (met) or DISABLED (unmet) 283 * arg2 = NetworkType 284 */ 285 private static final int EVENT_SET_DEPENDENCY_MET = 10; 286 287 /** 288 * used internally to send a sticky broadcast delayed. 289 */ 290 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 291 292 /** 293 * Used internally to disable fail fast of mobile data 294 */ 295 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 296 297 /** 298 * used internally to indicate that data sampling interval is up 299 */ 300 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 301 302 /** 303 * PAC manager has received new port. 304 */ 305 private static final int EVENT_PROXY_HAS_CHANGED = 16; 306 307 /** 308 * used internally when registering NetworkFactories 309 * obj = NetworkFactoryInfo 310 */ 311 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 312 313 /** 314 * used internally when registering NetworkAgents 315 * obj = Messenger 316 */ 317 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 318 319 /** 320 * used to add a network request 321 * includes a NetworkRequestInfo 322 */ 323 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 324 325 /** 326 * indicates a timeout period is over - check if we had a network yet or not 327 * and if not, call the timeout calback (but leave the request live until they 328 * cancel it. 329 * includes a NetworkRequestInfo 330 */ 331 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 332 333 /** 334 * used to add a network listener - no request 335 * includes a NetworkRequestInfo 336 */ 337 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 338 339 /** 340 * used to remove a network request, either a listener or a real request 341 * arg1 = UID of caller 342 * obj = NetworkRequest 343 */ 344 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 345 346 /** 347 * used internally when registering NetworkFactories 348 * obj = Messenger 349 */ 350 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 351 352 /** 353 * used internally to expire a wakelock when transitioning 354 * from one net to another. Expire happens when we fail to find 355 * a new network (typically after 1 minute) - 356 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 357 * a replacement network. 358 */ 359 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 360 361 /** 362 * Used internally to indicate the system is ready. 363 */ 364 private static final int EVENT_SYSTEM_READY = 25; 365 366 /** 367 * used to add a network request with a pending intent 368 * includes a NetworkRequestInfo 369 */ 370 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 371 372 /** 373 * used to remove a pending intent and its associated network request. 374 * arg1 = UID of caller 375 * obj = PendingIntent 376 */ 377 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 378 379 380 /** Handler used for internal events. */ 381 final private InternalHandler mHandler; 382 /** Handler used for incoming {@link NetworkStateTracker} events. */ 383 final private NetworkStateTrackerHandler mTrackerHandler; 384 385 private boolean mSystemReady; 386 private Intent mInitialBroadcast; 387 388 private PowerManager.WakeLock mNetTransitionWakeLock; 389 private String mNetTransitionWakeLockCausedBy = ""; 390 private int mNetTransitionWakeLockSerialNumber; 391 private int mNetTransitionWakeLockTimeout; 392 private final PowerManager.WakeLock mPendingIntentWakeLock; 393 394 private InetAddress mDefaultDns; 395 396 // used in DBG mode to track inet condition reports 397 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 398 private ArrayList mInetLog; 399 400 // track the current default http proxy - tell the world if we get a new one (real change) 401 private volatile ProxyInfo mDefaultProxy = null; 402 private Object mProxyLock = new Object(); 403 private boolean mDefaultProxyDisabled = false; 404 405 // track the global proxy. 406 private ProxyInfo mGlobalProxy = null; 407 408 private PacManager mPacManager = null; 409 410 private SettingsObserver mSettingsObserver; 411 412 private UserManager mUserManager; 413 414 NetworkConfig[] mNetConfigs; 415 int mNetworksDefined; 416 417 // the set of network types that can only be enabled by system/sig apps 418 List mProtectedNetworks; 419 420 private DataConnectionStats mDataConnectionStats; 421 422 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 423 424 TelephonyManager mTelephonyManager; 425 426 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 427 private final static int MIN_NET_ID = 100; // some reserved marks 428 private final static int MAX_NET_ID = 65535; 429 private int mNextNetId = MIN_NET_ID; 430 431 // sequence number of NetworkRequests 432 private int mNextNetworkRequestId = 1; 433 434 /** 435 * Implements support for the legacy "one network per network type" model. 436 * 437 * We used to have a static array of NetworkStateTrackers, one for each 438 * network type, but that doesn't work any more now that we can have, 439 * for example, more that one wifi network. This class stores all the 440 * NetworkAgentInfo objects that support a given type, but the legacy 441 * API will only see the first one. 442 * 443 * It serves two main purposes: 444 * 445 * 1. Provide information about "the network for a given type" (since this 446 * API only supports one). 447 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 448 * the first network for a given type changes, or if the default network 449 * changes. 450 */ 451 private class LegacyTypeTracker { 452 453 private static final boolean DBG = true; 454 private static final boolean VDBG = false; 455 private static final String TAG = "CSLegacyTypeTracker"; 456 457 /** 458 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 459 * Each list holds references to all NetworkAgentInfos that are used to 460 * satisfy requests for that network type. 461 * 462 * This array is built out at startup such that an unsupported network 463 * doesn't get an ArrayList instance, making this a tristate: 464 * unsupported, supported but not active and active. 465 * 466 * The actual lists are populated when we scan the network types that 467 * are supported on this device. 468 */ 469 private ArrayList<NetworkAgentInfo> mTypeLists[]; 470 471 public LegacyTypeTracker() { 472 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 473 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 474 } 475 476 public void addSupportedType(int type) { 477 if (mTypeLists[type] != null) { 478 throw new IllegalStateException( 479 "legacy list for type " + type + "already initialized"); 480 } 481 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 482 } 483 484 public boolean isTypeSupported(int type) { 485 return isNetworkTypeValid(type) && mTypeLists[type] != null; 486 } 487 488 public NetworkAgentInfo getNetworkForType(int type) { 489 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 490 return mTypeLists[type].get(0); 491 } else { 492 return null; 493 } 494 } 495 496 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 497 if (DBG) { 498 log("Sending " + (connected ? "connected" : "disconnected") + 499 " broadcast for type " + type + " " + nai.name() + 500 " isDefaultNetwork=" + isDefaultNetwork(nai)); 501 } 502 } 503 504 /** Adds the given network to the specified legacy type list. */ 505 public void add(int type, NetworkAgentInfo nai) { 506 if (!isTypeSupported(type)) { 507 return; // Invalid network type. 508 } 509 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 510 511 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 512 if (list.contains(nai)) { 513 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 514 return; 515 } 516 517 list.add(nai); 518 519 // Send a broadcast if this is the first network of its type or if it's the default. 520 if (list.size() == 1 || isDefaultNetwork(nai)) { 521 maybeLogBroadcast(nai, true, type); 522 sendLegacyNetworkBroadcast(nai, true, type); 523 } 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 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 630 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 631 632 mContext = checkNotNull(context, "missing Context"); 633 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 634 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 635 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 636 mKeyStore = KeyStore.getInstance(); 637 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 638 639 try { 640 mPolicyManager.registerListener(mPolicyListener); 641 } catch (RemoteException e) { 642 // ouch, no rules updates means some processes may never get network 643 loge("unable to register INetworkPolicyListener" + e.toString()); 644 } 645 646 final PowerManager powerManager = (PowerManager) context.getSystemService( 647 Context.POWER_SERVICE); 648 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 649 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 650 com.android.internal.R.integer.config_networkTransitionTimeout); 651 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 652 653 mNetTrackers = new NetworkStateTracker[ 654 ConnectivityManager.MAX_NETWORK_TYPE+1]; 655 656 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 657 658 // TODO: What is the "correct" way to do determine if this is a wifi only device? 659 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 660 log("wifiOnly=" + wifiOnly); 661 String[] naStrings = context.getResources().getStringArray( 662 com.android.internal.R.array.networkAttributes); 663 for (String naString : naStrings) { 664 try { 665 NetworkConfig n = new NetworkConfig(naString); 666 if (VDBG) log("naString=" + naString + " config=" + n); 667 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 668 loge("Error in networkAttributes - ignoring attempt to define type " + 669 n.type); 670 continue; 671 } 672 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 673 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 674 n.type); 675 continue; 676 } 677 if (mNetConfigs[n.type] != null) { 678 loge("Error in networkAttributes - ignoring attempt to redefine type " + 679 n.type); 680 continue; 681 } 682 mLegacyTypeTracker.addSupportedType(n.type); 683 684 mNetConfigs[n.type] = n; 685 mNetworksDefined++; 686 } catch(Exception e) { 687 // ignore it - leave the entry null 688 } 689 } 690 691 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 692 if (mNetConfigs[TYPE_VPN] == null) { 693 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 694 // don't need to add TYPE_VPN to mNetConfigs. 695 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 696 mNetworksDefined++; // used only in the log() statement below. 697 } 698 699 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 700 701 mProtectedNetworks = new ArrayList<Integer>(); 702 int[] protectedNetworks = context.getResources().getIntArray( 703 com.android.internal.R.array.config_protectedNetworks); 704 for (int p : protectedNetworks) { 705 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 706 mProtectedNetworks.add(p); 707 } else { 708 if (DBG) loge("Ignoring protectedNetwork " + p); 709 } 710 } 711 712 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 713 && SystemProperties.get("ro.build.type").equals("eng"); 714 715 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 716 717 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 718 719 //set up the listener for user state for creating user VPNs 720 IntentFilter intentFilter = new IntentFilter(); 721 intentFilter.addAction(Intent.ACTION_USER_STARTING); 722 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 723 mContext.registerReceiverAsUser( 724 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 725 726 try { 727 mNetd.registerObserver(mTethering); 728 mNetd.registerObserver(mDataActivityObserver); 729 } catch (RemoteException e) { 730 loge("Error registering observer :" + e); 731 } 732 733 if (DBG) { 734 mInetLog = new ArrayList(); 735 } 736 737 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 738 mSettingsObserver.observe(mContext); 739 740 mDataConnectionStats = new DataConnectionStats(mContext); 741 mDataConnectionStats.startMonitoring(); 742 743 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 744 745 IntentFilter filter = new IntentFilter(); 746 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 747 mContext.registerReceiver( 748 new BroadcastReceiver() { 749 @Override 750 public void onReceive(Context context, Intent intent) { 751 String action = intent.getAction(); 752 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 753 mHandler.sendMessage(mHandler.obtainMessage 754 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 755 } 756 } 757 }, 758 new IntentFilter(filter)); 759 760 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 761 762 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 763 } 764 765 private synchronized int nextNetworkRequestId() { 766 return mNextNetworkRequestId++; 767 } 768 769 private void assignNextNetId(NetworkAgentInfo nai) { 770 synchronized (mNetworkForNetId) { 771 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 772 int netId = mNextNetId; 773 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 774 // Make sure NetID unused. http://b/16815182 775 if (mNetworkForNetId.get(netId) == null) { 776 nai.network = new Network(netId); 777 mNetworkForNetId.put(netId, nai); 778 return; 779 } 780 } 781 } 782 throw new IllegalStateException("No free netIds"); 783 } 784 785 private boolean teardown(NetworkStateTracker netTracker) { 786 if (netTracker.teardown()) { 787 netTracker.setTeardownRequested(true); 788 return true; 789 } else { 790 return false; 791 } 792 } 793 794 private NetworkState getFilteredNetworkState(int networkType, int uid) { 795 NetworkInfo info = null; 796 LinkProperties lp = null; 797 NetworkCapabilities nc = null; 798 Network network = null; 799 String subscriberId = null; 800 801 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 802 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 803 if (nai != null) { 804 synchronized (nai) { 805 info = new NetworkInfo(nai.networkInfo); 806 lp = new LinkProperties(nai.linkProperties); 807 nc = new NetworkCapabilities(nai.networkCapabilities); 808 network = new Network(nai.network); 809 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 810 } 811 info.setType(networkType); 812 } else { 813 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 814 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 815 info.setIsAvailable(true); 816 lp = new LinkProperties(); 817 nc = new NetworkCapabilities(); 818 network = null; 819 } 820 info = getFilteredNetworkInfo(info, lp, uid); 821 } 822 823 return new NetworkState(info, lp, nc, network, subscriberId, null); 824 } 825 826 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 827 if (network == null) { 828 return null; 829 } 830 synchronized (mNetworkForNetId) { 831 return mNetworkForNetId.get(network.netId); 832 } 833 }; 834 835 private NetworkState getUnfilteredActiveNetworkState(int uid) { 836 NetworkInfo info = null; 837 LinkProperties lp = null; 838 NetworkCapabilities nc = null; 839 Network network = null; 840 String subscriberId = null; 841 842 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 843 844 if (!mLockdownEnabled) { 845 int user = UserHandle.getUserId(uid); 846 synchronized (mVpns) { 847 Vpn vpn = mVpns.get(user); 848 if (vpn != null && vpn.appliesToUid(uid)) { 849 // getUnderlyingNetworks() returns: 850 // null => the VPN didn't specify anything, so we use the default. 851 // empty array => the VPN explicitly said "no default network". 852 // non-empty array => the VPN specified one or more default networks; we use the 853 // first one. 854 Network[] networks = vpn.getUnderlyingNetworks(); 855 if (networks != null) { 856 if (networks.length > 0) { 857 nai = getNetworkAgentInfoForNetwork(networks[0]); 858 } else { 859 nai = null; 860 } 861 } 862 } 863 } 864 } 865 866 if (nai != null) { 867 synchronized (nai) { 868 info = new NetworkInfo(nai.networkInfo); 869 lp = new LinkProperties(nai.linkProperties); 870 nc = new NetworkCapabilities(nai.networkCapabilities); 871 network = new Network(nai.network); 872 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 873 } 874 } 875 876 return new NetworkState(info, lp, nc, network, subscriberId, null); 877 } 878 879 /** 880 * Check if UID should be blocked from using the network with the given LinkProperties. 881 */ 882 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 883 final boolean networkCostly; 884 final int uidRules; 885 886 final String iface = (lp == null ? "" : lp.getInterfaceName()); 887 synchronized (mRulesLock) { 888 networkCostly = mMeteredIfaces.contains(iface); 889 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 890 } 891 892 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 893 return true; 894 } 895 896 // no restrictive rules; network is visible 897 return false; 898 } 899 900 /** 901 * Return a filtered {@link NetworkInfo}, potentially marked 902 * {@link DetailedState#BLOCKED} based on 903 * {@link #isNetworkWithLinkPropertiesBlocked}. 904 */ 905 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 906 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 907 // network is blocked; clone and override state 908 info = new NetworkInfo(info); 909 info.setDetailedState(DetailedState.BLOCKED, null, null); 910 if (DBG) log("returning Blocked NetworkInfo"); 911 } 912 if (info != null && mLockdownTracker != null) { 913 info = mLockdownTracker.augmentNetworkInfo(info); 914 if (DBG) log("returning Locked NetworkInfo"); 915 } 916 return info; 917 } 918 919 /** 920 * Return NetworkInfo for the active (i.e., connected) network interface. 921 * It is assumed that at most one network is active at a time. If more 922 * than one is active, it is indeterminate which will be returned. 923 * @return the info for the active network, or {@code null} if none is 924 * active 925 */ 926 @Override 927 public NetworkInfo getActiveNetworkInfo() { 928 enforceAccessPermission(); 929 final int uid = Binder.getCallingUid(); 930 NetworkState state = getUnfilteredActiveNetworkState(uid); 931 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 932 } 933 934 /** 935 * Find the first Provisioning network. 936 * 937 * @return NetworkInfo or null if none. 938 */ 939 private NetworkInfo getProvisioningNetworkInfo() { 940 enforceAccessPermission(); 941 942 // Find the first Provisioning Network 943 NetworkInfo provNi = null; 944 for (NetworkInfo ni : getAllNetworkInfo()) { 945 if (ni.isConnectedToProvisioningNetwork()) { 946 provNi = ni; 947 break; 948 } 949 } 950 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 951 return provNi; 952 } 953 954 /** 955 * Find the first Provisioning network or the ActiveDefaultNetwork 956 * if there is no Provisioning network 957 * 958 * @return NetworkInfo or null if none. 959 */ 960 @Override 961 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 962 enforceAccessPermission(); 963 964 NetworkInfo provNi = getProvisioningNetworkInfo(); 965 if (provNi == null) { 966 provNi = getActiveNetworkInfo(); 967 } 968 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 969 return provNi; 970 } 971 972 public NetworkInfo getActiveNetworkInfoUnfiltered() { 973 enforceAccessPermission(); 974 final int uid = Binder.getCallingUid(); 975 NetworkState state = getUnfilteredActiveNetworkState(uid); 976 return state.networkInfo; 977 } 978 979 @Override 980 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 981 enforceConnectivityInternalPermission(); 982 NetworkState state = getUnfilteredActiveNetworkState(uid); 983 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 984 } 985 986 @Override 987 public NetworkInfo getNetworkInfo(int networkType) { 988 enforceAccessPermission(); 989 final int uid = Binder.getCallingUid(); 990 NetworkState state = getFilteredNetworkState(networkType, uid); 991 return state.networkInfo; 992 } 993 994 @Override 995 public NetworkInfo getNetworkInfoForNetwork(Network network) { 996 enforceAccessPermission(); 997 final int uid = Binder.getCallingUid(); 998 NetworkInfo info = null; 999 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1000 if (nai != null) { 1001 synchronized (nai) { 1002 info = new NetworkInfo(nai.networkInfo); 1003 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1004 } 1005 } 1006 return info; 1007 } 1008 1009 @Override 1010 public NetworkInfo[] getAllNetworkInfo() { 1011 enforceAccessPermission(); 1012 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1013 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1014 networkType++) { 1015 NetworkInfo info = getNetworkInfo(networkType); 1016 if (info != null) { 1017 result.add(info); 1018 } 1019 } 1020 return result.toArray(new NetworkInfo[result.size()]); 1021 } 1022 1023 @Override 1024 public Network getNetworkForType(int networkType) { 1025 enforceAccessPermission(); 1026 final int uid = Binder.getCallingUid(); 1027 NetworkState state = getFilteredNetworkState(networkType, uid); 1028 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1029 return state.network; 1030 } 1031 return null; 1032 } 1033 1034 @Override 1035 public Network[] getAllNetworks() { 1036 enforceAccessPermission(); 1037 final ArrayList<Network> result = new ArrayList(); 1038 synchronized (mNetworkForNetId) { 1039 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1040 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1041 } 1042 } 1043 return result.toArray(new Network[result.size()]); 1044 } 1045 1046 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 1047 if (nai != null) { 1048 synchronized (nai) { 1049 if (nai.created) { 1050 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1051 if (nai.validated) { 1052 nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1053 } else { 1054 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1055 } 1056 return nc; 1057 } 1058 } 1059 } 1060 return null; 1061 } 1062 1063 @Override 1064 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1065 // The basic principle is: if an app's traffic could possibly go over a 1066 // network, without the app doing anything multinetwork-specific, 1067 // (hence, by "default"), then include that network's capabilities in 1068 // the array. 1069 // 1070 // In the normal case, app traffic only goes over the system's default 1071 // network connection, so that's the only network returned. 1072 // 1073 // With a VPN in force, some app traffic may go into the VPN, and thus 1074 // over whatever underlying networks the VPN specifies, while other app 1075 // traffic may go over the system default network (e.g.: a split-tunnel 1076 // VPN, or an app disallowed by the VPN), so the set of networks 1077 // returned includes the VPN's underlying networks and the system 1078 // default. 1079 enforceAccessPermission(); 1080 1081 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1082 1083 NetworkAgentInfo nai = getDefaultNetwork(); 1084 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1085 if (nc != null) { 1086 result.put(nai.network, nc); 1087 } 1088 1089 if (!mLockdownEnabled) { 1090 synchronized (mVpns) { 1091 Vpn vpn = mVpns.get(userId); 1092 if (vpn != null) { 1093 Network[] networks = vpn.getUnderlyingNetworks(); 1094 if (networks != null) { 1095 for (Network network : networks) { 1096 nai = getNetworkAgentInfoForNetwork(network); 1097 nc = getNetworkCapabilitiesAndValidation(nai); 1098 if (nc != null) { 1099 result.put(nai.network, nc); 1100 } 1101 } 1102 } 1103 } 1104 } 1105 } 1106 1107 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1108 out = result.values().toArray(out); 1109 return out; 1110 } 1111 1112 @Override 1113 public boolean isNetworkSupported(int networkType) { 1114 enforceAccessPermission(); 1115 return mLegacyTypeTracker.isTypeSupported(networkType); 1116 } 1117 1118 /** 1119 * Return LinkProperties for the active (i.e., connected) default 1120 * network interface. It is assumed that at most one default network 1121 * is active at a time. If more than one is active, it is indeterminate 1122 * which will be returned. 1123 * @return the ip properties for the active network, or {@code null} if 1124 * none is active 1125 */ 1126 @Override 1127 public LinkProperties getActiveLinkProperties() { 1128 enforceAccessPermission(); 1129 final int uid = Binder.getCallingUid(); 1130 NetworkState state = getUnfilteredActiveNetworkState(uid); 1131 return state.linkProperties; 1132 } 1133 1134 @Override 1135 public LinkProperties getLinkPropertiesForType(int networkType) { 1136 enforceAccessPermission(); 1137 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1138 if (nai != null) { 1139 synchronized (nai) { 1140 return new LinkProperties(nai.linkProperties); 1141 } 1142 } 1143 return null; 1144 } 1145 1146 // TODO - this should be ALL networks 1147 @Override 1148 public LinkProperties getLinkProperties(Network network) { 1149 enforceAccessPermission(); 1150 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1151 if (nai != null) { 1152 synchronized (nai) { 1153 return new LinkProperties(nai.linkProperties); 1154 } 1155 } 1156 return null; 1157 } 1158 1159 @Override 1160 public NetworkCapabilities getNetworkCapabilities(Network network) { 1161 enforceAccessPermission(); 1162 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1163 if (nai != null) { 1164 synchronized (nai) { 1165 return new NetworkCapabilities(nai.networkCapabilities); 1166 } 1167 } 1168 return null; 1169 } 1170 1171 @Override 1172 public NetworkState[] getAllNetworkState() { 1173 // Require internal since we're handing out IMSI details 1174 enforceConnectivityInternalPermission(); 1175 1176 final ArrayList<NetworkState> result = Lists.newArrayList(); 1177 for (Network network : getAllNetworks()) { 1178 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1179 if (nai != null) { 1180 synchronized (nai) { 1181 final String subscriberId = (nai.networkMisc != null) 1182 ? nai.networkMisc.subscriberId : null; 1183 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1184 nai.networkCapabilities, network, subscriberId, null)); 1185 } 1186 } 1187 } 1188 return result.toArray(new NetworkState[result.size()]); 1189 } 1190 1191 @Override 1192 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1193 enforceAccessPermission(); 1194 final int uid = Binder.getCallingUid(); 1195 final long token = Binder.clearCallingIdentity(); 1196 try { 1197 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1198 if (state.networkInfo != null) { 1199 try { 1200 return mPolicyManager.getNetworkQuotaInfo(state); 1201 } catch (RemoteException e) { 1202 } 1203 } 1204 return null; 1205 } finally { 1206 Binder.restoreCallingIdentity(token); 1207 } 1208 } 1209 1210 @Override 1211 public boolean isActiveNetworkMetered() { 1212 enforceAccessPermission(); 1213 final int uid = Binder.getCallingUid(); 1214 final long token = Binder.clearCallingIdentity(); 1215 try { 1216 return isActiveNetworkMeteredUnchecked(uid); 1217 } finally { 1218 Binder.restoreCallingIdentity(token); 1219 } 1220 } 1221 1222 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1223 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1224 if (state.networkInfo != null) { 1225 try { 1226 return mPolicyManager.isNetworkMetered(state); 1227 } catch (RemoteException e) { 1228 } 1229 } 1230 return false; 1231 } 1232 1233 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1234 @Override 1235 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1236 int deviceType = Integer.parseInt(label); 1237 sendDataActivityBroadcast(deviceType, active, tsNanos); 1238 } 1239 }; 1240 1241 /** 1242 * Ensure that a network route exists to deliver traffic to the specified 1243 * host via the specified network interface. 1244 * @param networkType the type of the network over which traffic to the 1245 * specified host is to be routed 1246 * @param hostAddress the IP address of the host to which the route is 1247 * desired 1248 * @return {@code true} on success, {@code false} on failure 1249 */ 1250 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1251 enforceChangePermission(); 1252 if (mProtectedNetworks.contains(networkType)) { 1253 enforceConnectivityInternalPermission(); 1254 } 1255 1256 InetAddress addr; 1257 try { 1258 addr = InetAddress.getByAddress(hostAddress); 1259 } catch (UnknownHostException e) { 1260 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1261 return false; 1262 } 1263 1264 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1265 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1266 return false; 1267 } 1268 1269 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1270 if (nai == null) { 1271 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1272 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1273 } else { 1274 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1275 } 1276 return false; 1277 } 1278 1279 DetailedState netState; 1280 synchronized (nai) { 1281 netState = nai.networkInfo.getDetailedState(); 1282 } 1283 1284 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1285 if (VDBG) { 1286 log("requestRouteToHostAddress on down network " 1287 + "(" + networkType + ") - dropped" 1288 + " netState=" + netState); 1289 } 1290 return false; 1291 } 1292 1293 final int uid = Binder.getCallingUid(); 1294 final long token = Binder.clearCallingIdentity(); 1295 try { 1296 LinkProperties lp; 1297 int netId; 1298 synchronized (nai) { 1299 lp = nai.linkProperties; 1300 netId = nai.network.netId; 1301 } 1302 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1303 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1304 return ok; 1305 } finally { 1306 Binder.restoreCallingIdentity(token); 1307 } 1308 } 1309 1310 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1311 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1312 if (bestRoute == null) { 1313 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1314 } else { 1315 String iface = bestRoute.getInterface(); 1316 if (bestRoute.getGateway().equals(addr)) { 1317 // if there is no better route, add the implied hostroute for our gateway 1318 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1319 } else { 1320 // if we will connect to this through another route, add a direct route 1321 // to it's gateway 1322 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1323 } 1324 } 1325 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1326 try { 1327 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1328 } catch (Exception e) { 1329 // never crash - catch them all 1330 if (DBG) loge("Exception trying to add a route: " + e); 1331 return false; 1332 } 1333 return true; 1334 } 1335 1336 public void setDataDependency(int networkType, boolean met) { 1337 enforceConnectivityInternalPermission(); 1338 1339 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1340 (met ? ENABLED : DISABLED), networkType)); 1341 } 1342 1343 private void handleSetDependencyMet(int networkType, boolean met) { 1344 if (mNetTrackers[networkType] != null) { 1345 if (DBG) { 1346 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1347 } 1348 mNetTrackers[networkType].setDependencyMet(met); 1349 } 1350 } 1351 1352 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1353 @Override 1354 public void onUidRulesChanged(int uid, int uidRules) { 1355 // caller is NPMS, since we only register with them 1356 if (LOGD_RULES) { 1357 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1358 } 1359 1360 synchronized (mRulesLock) { 1361 // skip update when we've already applied rules 1362 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1363 if (oldRules == uidRules) return; 1364 1365 mUidRules.put(uid, uidRules); 1366 } 1367 1368 // TODO: notify UID when it has requested targeted updates 1369 } 1370 1371 @Override 1372 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1373 // caller is NPMS, since we only register with them 1374 if (LOGD_RULES) { 1375 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1376 } 1377 1378 synchronized (mRulesLock) { 1379 mMeteredIfaces.clear(); 1380 for (String iface : meteredIfaces) { 1381 mMeteredIfaces.add(iface); 1382 } 1383 } 1384 } 1385 1386 @Override 1387 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1388 // caller is NPMS, since we only register with them 1389 if (LOGD_RULES) { 1390 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1391 } 1392 1393 // kick off connectivity change broadcast for active network, since 1394 // global background policy change is radical. 1395 // TODO: Dead code; remove. 1396 // 1397 // final int networkType = mActiveDefaultNetwork; 1398 // if (isNetworkTypeValid(networkType)) { 1399 // final NetworkStateTracker tracker = mNetTrackers[networkType]; 1400 // if (tracker != null) { 1401 // final NetworkInfo info = tracker.getNetworkInfo(); 1402 // if (info != null && info.isConnected()) { 1403 // sendConnectedBroadcast(info); 1404 // } 1405 // } 1406 // } 1407 } 1408 }; 1409 1410 private void enforceInternetPermission() { 1411 mContext.enforceCallingOrSelfPermission( 1412 android.Manifest.permission.INTERNET, 1413 "ConnectivityService"); 1414 } 1415 1416 private void enforceAccessPermission() { 1417 mContext.enforceCallingOrSelfPermission( 1418 android.Manifest.permission.ACCESS_NETWORK_STATE, 1419 "ConnectivityService"); 1420 } 1421 1422 private void enforceChangePermission() { 1423 mContext.enforceCallingOrSelfPermission( 1424 android.Manifest.permission.CHANGE_NETWORK_STATE, 1425 "ConnectivityService"); 1426 } 1427 1428 private void enforceTetherAccessPermission() { 1429 mContext.enforceCallingOrSelfPermission( 1430 android.Manifest.permission.ACCESS_NETWORK_STATE, 1431 "ConnectivityService"); 1432 } 1433 1434 private void enforceConnectivityInternalPermission() { 1435 mContext.enforceCallingOrSelfPermission( 1436 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1437 "ConnectivityService"); 1438 } 1439 1440 public void sendConnectedBroadcast(NetworkInfo info) { 1441 enforceConnectivityInternalPermission(); 1442 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1443 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1444 } 1445 1446 private void sendInetConditionBroadcast(NetworkInfo info) { 1447 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1448 } 1449 1450 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1451 if (mLockdownTracker != null) { 1452 info = mLockdownTracker.augmentNetworkInfo(info); 1453 } 1454 1455 Intent intent = new Intent(bcastType); 1456 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1457 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1458 if (info.isFailover()) { 1459 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1460 info.setFailover(false); 1461 } 1462 if (info.getReason() != null) { 1463 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1464 } 1465 if (info.getExtraInfo() != null) { 1466 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1467 info.getExtraInfo()); 1468 } 1469 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1470 return intent; 1471 } 1472 1473 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1474 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1475 } 1476 1477 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1478 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1479 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1480 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1481 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1482 final long ident = Binder.clearCallingIdentity(); 1483 try { 1484 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1485 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1486 } finally { 1487 Binder.restoreCallingIdentity(ident); 1488 } 1489 } 1490 1491 private void sendStickyBroadcast(Intent intent) { 1492 synchronized(this) { 1493 if (!mSystemReady) { 1494 mInitialBroadcast = new Intent(intent); 1495 } 1496 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1497 if (DBG) { 1498 log("sendStickyBroadcast: action=" + intent.getAction()); 1499 } 1500 1501 final long ident = Binder.clearCallingIdentity(); 1502 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1503 final IBatteryStats bs = BatteryStatsService.getService(); 1504 try { 1505 NetworkInfo ni = intent.getParcelableExtra( 1506 ConnectivityManager.EXTRA_NETWORK_INFO); 1507 bs.noteConnectivityChanged(intent.getIntExtra( 1508 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1509 ni != null ? ni.getState().toString() : "?"); 1510 } catch (RemoteException e) { 1511 } 1512 } 1513 try { 1514 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1515 } finally { 1516 Binder.restoreCallingIdentity(ident); 1517 } 1518 } 1519 } 1520 1521 void systemReady() { 1522 // start network sampling .. 1523 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1524 intent.setPackage(mContext.getPackageName()); 1525 1526 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1527 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1528 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1529 1530 loadGlobalProxy(); 1531 1532 synchronized(this) { 1533 mSystemReady = true; 1534 if (mInitialBroadcast != null) { 1535 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1536 mInitialBroadcast = null; 1537 } 1538 } 1539 // load the global proxy at startup 1540 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1541 1542 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1543 // for user to unlock device. 1544 if (!updateLockdownVpn()) { 1545 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1546 mContext.registerReceiver(mUserPresentReceiver, filter); 1547 } 1548 1549 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1550 1551 mPermissionMonitor.startMonitoring(); 1552 } 1553 1554 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1555 @Override 1556 public void onReceive(Context context, Intent intent) { 1557 // Try creating lockdown tracker, since user present usually means 1558 // unlocked keystore. 1559 if (updateLockdownVpn()) { 1560 mContext.unregisterReceiver(this); 1561 } 1562 } 1563 }; 1564 1565 /** @hide */ 1566 @Override 1567 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1568 enforceConnectivityInternalPermission(); 1569 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1570// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1571 } 1572 1573 /** 1574 * Setup data activity tracking for the given network. 1575 * 1576 * Every {@code setupDataActivityTracking} should be paired with a 1577 * {@link #removeDataActivityTracking} for cleanup. 1578 */ 1579 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1580 final String iface = networkAgent.linkProperties.getInterfaceName(); 1581 1582 final int timeout; 1583 int type = ConnectivityManager.TYPE_NONE; 1584 1585 if (networkAgent.networkCapabilities.hasTransport( 1586 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1587 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1588 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1589 5); 1590 type = ConnectivityManager.TYPE_MOBILE; 1591 } else if (networkAgent.networkCapabilities.hasTransport( 1592 NetworkCapabilities.TRANSPORT_WIFI)) { 1593 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1594 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1595 0); 1596 type = ConnectivityManager.TYPE_WIFI; 1597 } else { 1598 // do not track any other networks 1599 timeout = 0; 1600 } 1601 1602 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1603 try { 1604 mNetd.addIdleTimer(iface, timeout, type); 1605 } catch (Exception e) { 1606 // You shall not crash! 1607 loge("Exception in setupDataActivityTracking " + e); 1608 } 1609 } 1610 } 1611 1612 /** 1613 * Remove data activity tracking when network disconnects. 1614 */ 1615 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1616 final String iface = networkAgent.linkProperties.getInterfaceName(); 1617 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1618 1619 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1620 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1621 try { 1622 // the call fails silently if no idletimer setup for this interface 1623 mNetd.removeIdleTimer(iface); 1624 } catch (Exception e) { 1625 loge("Exception in removeDataActivityTracking " + e); 1626 } 1627 } 1628 } 1629 1630 /** 1631 * Reads the network specific MTU size from reources. 1632 * and set it on it's iface. 1633 */ 1634 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1635 final String iface = newLp.getInterfaceName(); 1636 final int mtu = newLp.getMtu(); 1637 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1638 if (VDBG) log("identical MTU - not setting"); 1639 return; 1640 } 1641 1642 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1643 loge("Unexpected mtu value: " + mtu + ", " + iface); 1644 return; 1645 } 1646 1647 // Cannot set MTU without interface name 1648 if (TextUtils.isEmpty(iface)) { 1649 loge("Setting MTU size with null iface."); 1650 return; 1651 } 1652 1653 try { 1654 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1655 mNetd.setMtu(iface, mtu); 1656 } catch (Exception e) { 1657 Slog.e(TAG, "exception in setMtu()" + e); 1658 } 1659 } 1660 1661 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1662 1663 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1664 if (isDefaultNetwork(nai) == false) { 1665 return; 1666 } 1667 1668 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1669 String[] values = null; 1670 if (tcpBufferSizes != null) { 1671 values = tcpBufferSizes.split(","); 1672 } 1673 1674 if (values == null || values.length != 6) { 1675 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1676 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1677 values = tcpBufferSizes.split(","); 1678 } 1679 1680 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1681 1682 try { 1683 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1684 1685 final String prefix = "/sys/kernel/ipv4/tcp_"; 1686 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1687 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1688 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1689 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1690 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1691 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1692 mCurrentTcpBufferSizes = tcpBufferSizes; 1693 } catch (IOException e) { 1694 loge("Can't set TCP buffer sizes:" + e); 1695 } 1696 1697 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1698 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1699 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1700 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1701 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1702 if (rwndValue != 0) { 1703 SystemProperties.set(sysctlKey, rwndValue.toString()); 1704 } 1705 } 1706 1707 private void flushVmDnsCache() { 1708 /* 1709 * Tell the VMs to toss their DNS caches 1710 */ 1711 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1712 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1713 /* 1714 * Connectivity events can happen before boot has completed ... 1715 */ 1716 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1717 final long ident = Binder.clearCallingIdentity(); 1718 try { 1719 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1720 } finally { 1721 Binder.restoreCallingIdentity(ident); 1722 } 1723 } 1724 1725 @Override 1726 public int getRestoreDefaultNetworkDelay(int networkType) { 1727 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1728 NETWORK_RESTORE_DELAY_PROP_NAME); 1729 if(restoreDefaultNetworkDelayStr != null && 1730 restoreDefaultNetworkDelayStr.length() != 0) { 1731 try { 1732 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1733 } catch (NumberFormatException e) { 1734 } 1735 } 1736 // if the system property isn't set, use the value for the apn type 1737 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1738 1739 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1740 (mNetConfigs[networkType] != null)) { 1741 ret = mNetConfigs[networkType].restoreTime; 1742 } 1743 return ret; 1744 } 1745 1746 @Override 1747 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1748 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1749 if (mContext.checkCallingOrSelfPermission( 1750 android.Manifest.permission.DUMP) 1751 != PackageManager.PERMISSION_GRANTED) { 1752 pw.println("Permission Denial: can't dump ConnectivityService " + 1753 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1754 Binder.getCallingUid()); 1755 return; 1756 } 1757 1758 pw.println("NetworkFactories for:"); 1759 pw.increaseIndent(); 1760 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1761 pw.println(nfi.name); 1762 } 1763 pw.decreaseIndent(); 1764 pw.println(); 1765 1766 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1767 pw.print("Active default network: "); 1768 if (defaultNai == null) { 1769 pw.println("none"); 1770 } else { 1771 pw.println(defaultNai.network.netId); 1772 } 1773 pw.println(); 1774 1775 pw.println("Current Networks:"); 1776 pw.increaseIndent(); 1777 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1778 pw.println(nai.toString()); 1779 pw.increaseIndent(); 1780 pw.println("Requests:"); 1781 pw.increaseIndent(); 1782 for (int i = 0; i < nai.networkRequests.size(); i++) { 1783 pw.println(nai.networkRequests.valueAt(i).toString()); 1784 } 1785 pw.decreaseIndent(); 1786 pw.println("Lingered:"); 1787 pw.increaseIndent(); 1788 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1789 pw.decreaseIndent(); 1790 pw.decreaseIndent(); 1791 } 1792 pw.decreaseIndent(); 1793 pw.println(); 1794 1795 pw.println("Network Requests:"); 1796 pw.increaseIndent(); 1797 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1798 pw.println(nri.toString()); 1799 } 1800 pw.println(); 1801 pw.decreaseIndent(); 1802 1803 pw.println("mLegacyTypeTracker:"); 1804 pw.increaseIndent(); 1805 mLegacyTypeTracker.dump(pw); 1806 pw.decreaseIndent(); 1807 pw.println(); 1808 1809 synchronized (this) { 1810 pw.println("NetworkTransitionWakeLock is currently " + 1811 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1812 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1813 } 1814 pw.println(); 1815 1816 mTethering.dump(fd, pw, args); 1817 1818 if (mInetLog != null) { 1819 pw.println(); 1820 pw.println("Inet condition reports:"); 1821 pw.increaseIndent(); 1822 for(int i = 0; i < mInetLog.size(); i++) { 1823 pw.println(mInetLog.get(i)); 1824 } 1825 pw.decreaseIndent(); 1826 } 1827 } 1828 1829 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1830 if (nai.network == null) return false; 1831 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1832 if (officialNai != null && officialNai.equals(nai)) return true; 1833 if (officialNai != null || VDBG) { 1834 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1835 " - " + nai); 1836 } 1837 return false; 1838 } 1839 1840 private boolean isRequest(NetworkRequest request) { 1841 return mNetworkRequests.get(request).isRequest; 1842 } 1843 1844 // must be stateless - things change under us. 1845 private class NetworkStateTrackerHandler extends Handler { 1846 public NetworkStateTrackerHandler(Looper looper) { 1847 super(looper); 1848 } 1849 1850 @Override 1851 public void handleMessage(Message msg) { 1852 NetworkInfo info; 1853 switch (msg.what) { 1854 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1855 handleAsyncChannelHalfConnect(msg); 1856 break; 1857 } 1858 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1859 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1860 if (nai != null) nai.asyncChannel.disconnect(); 1861 break; 1862 } 1863 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1864 handleAsyncChannelDisconnected(msg); 1865 break; 1866 } 1867 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1868 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1869 if (nai == null) { 1870 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1871 } else { 1872 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1873 } 1874 break; 1875 } 1876 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1877 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1878 if (nai == null) { 1879 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1880 } else { 1881 if (VDBG) { 1882 log("Update of LinkProperties for " + nai.name() + 1883 "; created=" + nai.created); 1884 } 1885 LinkProperties oldLp = nai.linkProperties; 1886 synchronized (nai) { 1887 nai.linkProperties = (LinkProperties)msg.obj; 1888 } 1889 if (nai.created) updateLinkProperties(nai, oldLp); 1890 } 1891 break; 1892 } 1893 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1894 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1895 if (nai == null) { 1896 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1897 break; 1898 } 1899 info = (NetworkInfo) msg.obj; 1900 updateNetworkInfo(nai, info); 1901 break; 1902 } 1903 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1904 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1905 if (nai == null) { 1906 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1907 break; 1908 } 1909 Integer score = (Integer) msg.obj; 1910 if (score != null) updateNetworkScore(nai, score.intValue()); 1911 break; 1912 } 1913 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1914 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1915 if (nai == null) { 1916 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1917 break; 1918 } 1919 try { 1920 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1921 } catch (Exception e) { 1922 // Never crash! 1923 loge("Exception in addVpnUidRanges: " + e); 1924 } 1925 break; 1926 } 1927 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1928 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1929 if (nai == null) { 1930 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1931 break; 1932 } 1933 try { 1934 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1935 } catch (Exception e) { 1936 // Never crash! 1937 loge("Exception in removeVpnUidRanges: " + e); 1938 } 1939 break; 1940 } 1941 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1942 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1943 if (nai == null) { 1944 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1945 break; 1946 } 1947 if (nai.created && !nai.networkMisc.explicitlySelected) { 1948 loge("ERROR: created network explicitly selected."); 1949 } 1950 nai.networkMisc.explicitlySelected = true; 1951 break; 1952 } 1953 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1954 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1955 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1956 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1957 if (valid) { 1958 if (DBG) log("Validated " + nai.name()); 1959 if (!nai.validated) { 1960 nai.validated = true; 1961 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1962 ReapUnvalidatedNetworks.REAP); 1963 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1964 sendUpdatedScoreToFactories(nai); 1965 } 1966 } 1967 updateInetCondition(nai, valid); 1968 // Let the NetworkAgent know the state of its network 1969 nai.asyncChannel.sendMessage( 1970 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1971 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1972 0, null); 1973 } 1974 break; 1975 } 1976 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1977 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1978 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1979 handleLingerComplete(nai); 1980 } 1981 break; 1982 } 1983 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1984 if (msg.arg1 == 0) { 1985 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1986 } else { 1987 NetworkAgentInfo nai = null; 1988 synchronized (mNetworkForNetId) { 1989 nai = mNetworkForNetId.get(msg.arg2); 1990 } 1991 if (nai == null) { 1992 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1993 break; 1994 } 1995 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1996 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1997 } 1998 break; 1999 } 2000 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2001 info = (NetworkInfo) msg.obj; 2002 NetworkInfo.State state = info.getState(); 2003 2004 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2005 (state == NetworkInfo.State.DISCONNECTED) || 2006 (state == NetworkInfo.State.SUSPENDED)) { 2007 log("ConnectivityChange for " + 2008 info.getTypeName() + ": " + 2009 state + "/" + info.getDetailedState()); 2010 } 2011 2012 EventLogTags.writeConnectivityStateChanged( 2013 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2014 2015 if (info.isConnectedToProvisioningNetwork()) { 2016 /** 2017 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2018 * for now its an in between network, its a network that 2019 * is actually a default network but we don't want it to be 2020 * announced as such to keep background applications from 2021 * trying to use it. It turns out that some still try so we 2022 * take the additional step of clearing any default routes 2023 * to the link that may have incorrectly setup by the lower 2024 * levels. 2025 */ 2026 LinkProperties lp = getLinkPropertiesForType(info.getType()); 2027 if (DBG) { 2028 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2029 } 2030 2031 // Clear any default routes setup by the radio so 2032 // any activity by applications trying to use this 2033 // connection will fail until the provisioning network 2034 // is enabled. 2035 /* 2036 for (RouteInfo r : lp.getRoutes()) { 2037 removeRoute(lp, r, TO_DEFAULT_TABLE, 2038 mNetTrackers[info.getType()].getNetwork().netId); 2039 } 2040 */ 2041 } else if (state == NetworkInfo.State.DISCONNECTED) { 2042 } else if (state == NetworkInfo.State.SUSPENDED) { 2043 } else if (state == NetworkInfo.State.CONNECTED) { 2044 // handleConnect(info); 2045 } 2046 notifyLockdownVpn(null); 2047 break; 2048 } 2049 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2050 info = (NetworkInfo) msg.obj; 2051 // TODO: Temporary allowing network configuration 2052 // change not resetting sockets. 2053 // @see bug/4455071 2054 /* 2055 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2056 false); 2057 */ 2058 break; 2059 } 2060 } 2061 } 2062 } 2063 2064 // Cancel any lingering so the linger timeout doesn't teardown a network. 2065 // This should be called when a network begins satisfying a NetworkRequest. 2066 // Note: depending on what state the NetworkMonitor is in (e.g., 2067 // if it's awaiting captive portal login, or if validation failed), this 2068 // may trigger a re-evaluation of the network. 2069 private void unlinger(NetworkAgentInfo nai) { 2070 if (VDBG) log("Canceling linger of " + nai.name()); 2071 nai.networkLingered.clear(); 2072 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2073 } 2074 2075 private void handleAsyncChannelHalfConnect(Message msg) { 2076 AsyncChannel ac = (AsyncChannel) msg.obj; 2077 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2078 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2079 if (VDBG) log("NetworkFactory connected"); 2080 // A network factory has connected. Send it all current NetworkRequests. 2081 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2082 if (nri.isRequest == false) continue; 2083 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2084 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2085 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2086 } 2087 } else { 2088 loge("Error connecting NetworkFactory"); 2089 mNetworkFactoryInfos.remove(msg.obj); 2090 } 2091 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2092 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2093 if (VDBG) log("NetworkAgent connected"); 2094 // A network agent has requested a connection. Establish the connection. 2095 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2096 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2097 } else { 2098 loge("Error connecting NetworkAgent"); 2099 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2100 if (nai != null) { 2101 synchronized (mNetworkForNetId) { 2102 mNetworkForNetId.remove(nai.network.netId); 2103 } 2104 // Just in case. 2105 mLegacyTypeTracker.remove(nai); 2106 } 2107 } 2108 } 2109 } 2110 2111 private void handleAsyncChannelDisconnected(Message msg) { 2112 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2113 if (nai != null) { 2114 if (DBG) { 2115 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2116 } 2117 // A network agent has disconnected. 2118 if (nai.created) { 2119 // Tell netd to clean up the configuration for this network 2120 // (routing rules, DNS, etc). 2121 try { 2122 mNetd.removeNetwork(nai.network.netId); 2123 } catch (Exception e) { 2124 loge("Exception removing network: " + e); 2125 } 2126 } 2127 // TODO - if we move the logic to the network agent (have them disconnect 2128 // because they lost all their requests or because their score isn't good) 2129 // then they would disconnect organically, report their new state and then 2130 // disconnect the channel. 2131 if (nai.networkInfo.isConnected()) { 2132 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2133 null, null); 2134 } 2135 if (isDefaultNetwork(nai)) { 2136 mDefaultInetConditionPublished = 0; 2137 } 2138 notifyIfacesChanged(); 2139 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2140 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2141 mNetworkAgentInfos.remove(msg.replyTo); 2142 updateClat(null, nai.linkProperties, nai); 2143 mLegacyTypeTracker.remove(nai); 2144 synchronized (mNetworkForNetId) { 2145 mNetworkForNetId.remove(nai.network.netId); 2146 } 2147 // Since we've lost the network, go through all the requests that 2148 // it was satisfying and see if any other factory can satisfy them. 2149 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2150 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2151 for (int i = 0; i < nai.networkRequests.size(); i++) { 2152 NetworkRequest request = nai.networkRequests.valueAt(i); 2153 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2154 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2155 if (DBG) { 2156 log("Checking for replacement network to handle request " + request ); 2157 } 2158 mNetworkForRequestId.remove(request.requestId); 2159 sendUpdatedScoreToFactories(request, 0); 2160 NetworkAgentInfo alternative = null; 2161 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2162 if (existing.satisfies(request) && 2163 (alternative == null || 2164 alternative.getCurrentScore() < existing.getCurrentScore())) { 2165 alternative = existing; 2166 } 2167 } 2168 if (alternative != null) { 2169 if (DBG) log(" found replacement in " + alternative.name()); 2170 if (!toActivate.contains(alternative)) { 2171 toActivate.add(alternative); 2172 } 2173 } 2174 } 2175 } 2176 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2177 removeDataActivityTracking(nai); 2178 notifyLockdownVpn(nai); 2179 requestNetworkTransitionWakelock(nai.name()); 2180 } 2181 for (NetworkAgentInfo networkToActivate : toActivate) { 2182 unlinger(networkToActivate); 2183 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2184 ReapUnvalidatedNetworks.DONT_REAP); 2185 } 2186 } 2187 } 2188 2189 // If this method proves to be too slow then we can maintain a separate 2190 // pendingIntent => NetworkRequestInfo map. 2191 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2192 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2193 Intent intent = pendingIntent.getIntent(); 2194 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2195 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2196 if (existingPendingIntent != null && 2197 existingPendingIntent.getIntent().filterEquals(intent)) { 2198 return entry.getValue(); 2199 } 2200 } 2201 return null; 2202 } 2203 2204 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2205 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2206 2207 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2208 if (existingRequest != null) { // remove the existing request. 2209 if (DBG) log("Replacing " + existingRequest.request + " with " 2210 + nri.request + " because their intents matched."); 2211 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2212 } 2213 handleRegisterNetworkRequest(msg); 2214 } 2215 2216 private void handleRegisterNetworkRequest(Message msg) { 2217 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2218 2219 mNetworkRequests.put(nri.request, nri); 2220 2221 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2222 2223 // Check for the best currently alive network that satisfies this request 2224 NetworkAgentInfo bestNetwork = null; 2225 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2226 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2227 if (network.satisfies(nri.request)) { 2228 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2229 if (!nri.isRequest) { 2230 // Not setting bestNetwork here as a listening NetworkRequest may be 2231 // satisfied by multiple Networks. Instead the request is added to 2232 // each satisfying Network and notified about each. 2233 network.addRequest(nri.request); 2234 notifyNetworkCallback(network, nri); 2235 } else if (bestNetwork == null || 2236 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2237 bestNetwork = network; 2238 } 2239 } 2240 } 2241 if (bestNetwork != null) { 2242 if (DBG) log("using " + bestNetwork.name()); 2243 unlinger(bestNetwork); 2244 bestNetwork.addRequest(nri.request); 2245 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2246 notifyNetworkCallback(bestNetwork, nri); 2247 if (nri.request.legacyType != TYPE_NONE) { 2248 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2249 } 2250 } 2251 2252 if (nri.isRequest) { 2253 if (DBG) log("sending new NetworkRequest to factories"); 2254 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2255 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2256 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2257 0, nri.request); 2258 } 2259 } 2260 } 2261 2262 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2263 int callingUid) { 2264 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2265 if (nri != null) { 2266 handleReleaseNetworkRequest(nri.request, callingUid); 2267 } 2268 } 2269 2270 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2271 NetworkRequestInfo nri = mNetworkRequests.get(request); 2272 if (nri != null) { 2273 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2274 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2275 return; 2276 } 2277 if (DBG) log("releasing NetworkRequest " + request); 2278 nri.unlinkDeathRecipient(); 2279 mNetworkRequests.remove(request); 2280 if (nri.isRequest) { 2281 // Find all networks that are satisfying this request and remove the request 2282 // from their request lists. 2283 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2284 if (nai.networkRequests.get(nri.request.requestId) != null) { 2285 nai.networkRequests.remove(nri.request.requestId); 2286 if (DBG) { 2287 log(" Removing from current network " + nai.name() + 2288 ", leaving " + nai.networkRequests.size() + 2289 " requests."); 2290 } 2291 // check if has any requests remaining and if not, 2292 // disconnect (unless it's a VPN). 2293 boolean keep = nai.isVPN(); 2294 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2295 NetworkRequest r = nai.networkRequests.valueAt(i); 2296 if (isRequest(r)) keep = true; 2297 } 2298 if (!keep) { 2299 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2300 nai.asyncChannel.disconnect(); 2301 } 2302 } 2303 } 2304 2305 // Maintain the illusion. When this request arrived, we might have pretended 2306 // that a network connected to serve it, even though the network was already 2307 // connected. Now that this request has gone away, we might have to pretend 2308 // that the network disconnected. LegacyTypeTracker will generate that 2309 // phantom disconnect for this type. 2310 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2311 if (nai != null) { 2312 mNetworkForRequestId.remove(nri.request.requestId); 2313 if (nri.request.legacyType != TYPE_NONE) { 2314 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2315 } 2316 } 2317 2318 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2319 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2320 nri.request); 2321 } 2322 } else { 2323 // listens don't have a singular affectedNetwork. Check all networks to see 2324 // if this listen request applies and remove it. 2325 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2326 nai.networkRequests.remove(nri.request.requestId); 2327 } 2328 } 2329 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2330 } 2331 } 2332 2333 private class InternalHandler extends Handler { 2334 public InternalHandler(Looper looper) { 2335 super(looper); 2336 } 2337 2338 @Override 2339 public void handleMessage(Message msg) { 2340 switch (msg.what) { 2341 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2342 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2343 String causedBy = null; 2344 synchronized (ConnectivityService.this) { 2345 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2346 mNetTransitionWakeLock.isHeld()) { 2347 mNetTransitionWakeLock.release(); 2348 causedBy = mNetTransitionWakeLockCausedBy; 2349 } else { 2350 break; 2351 } 2352 } 2353 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2354 log("Failed to find a new network - expiring NetTransition Wakelock"); 2355 } else { 2356 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2357 " cleared because we found a replacement network"); 2358 } 2359 break; 2360 } 2361 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2362 handleDeprecatedGlobalHttpProxy(); 2363 break; 2364 } 2365 case EVENT_SET_DEPENDENCY_MET: { 2366 boolean met = (msg.arg1 == ENABLED); 2367 handleSetDependencyMet(msg.arg2, met); 2368 break; 2369 } 2370 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2371 Intent intent = (Intent)msg.obj; 2372 sendStickyBroadcast(intent); 2373 break; 2374 } 2375 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2376 int tag = mEnableFailFastMobileDataTag.get(); 2377 if (msg.arg1 == tag) { 2378 MobileDataStateTracker mobileDst = 2379 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2380 if (mobileDst != null) { 2381 mobileDst.setEnableFailFastMobileData(msg.arg2); 2382 } 2383 } else { 2384 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2385 + " != tag:" + tag); 2386 } 2387 break; 2388 } 2389 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2390 handleNetworkSamplingTimeout(); 2391 break; 2392 } 2393 case EVENT_PROXY_HAS_CHANGED: { 2394 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2395 break; 2396 } 2397 case EVENT_REGISTER_NETWORK_FACTORY: { 2398 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2399 break; 2400 } 2401 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2402 handleUnregisterNetworkFactory((Messenger)msg.obj); 2403 break; 2404 } 2405 case EVENT_REGISTER_NETWORK_AGENT: { 2406 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2407 break; 2408 } 2409 case EVENT_REGISTER_NETWORK_REQUEST: 2410 case EVENT_REGISTER_NETWORK_LISTENER: { 2411 handleRegisterNetworkRequest(msg); 2412 break; 2413 } 2414 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2415 handleRegisterNetworkRequestWithIntent(msg); 2416 break; 2417 } 2418 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2419 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2420 break; 2421 } 2422 case EVENT_RELEASE_NETWORK_REQUEST: { 2423 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2424 break; 2425 } 2426 case EVENT_SYSTEM_READY: { 2427 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2428 nai.networkMonitor.systemReady = true; 2429 } 2430 break; 2431 } 2432 } 2433 } 2434 } 2435 2436 // javadoc from interface 2437 public int tether(String iface) { 2438 ConnectivityManager.enforceTetherChangePermission(mContext); 2439 if (isTetheringSupported()) { 2440 return mTethering.tether(iface); 2441 } else { 2442 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2443 } 2444 } 2445 2446 // javadoc from interface 2447 public int untether(String iface) { 2448 ConnectivityManager.enforceTetherChangePermission(mContext); 2449 2450 if (isTetheringSupported()) { 2451 return mTethering.untether(iface); 2452 } else { 2453 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2454 } 2455 } 2456 2457 // javadoc from interface 2458 public int getLastTetherError(String iface) { 2459 enforceTetherAccessPermission(); 2460 2461 if (isTetheringSupported()) { 2462 return mTethering.getLastTetherError(iface); 2463 } else { 2464 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2465 } 2466 } 2467 2468 // TODO - proper iface API for selection by property, inspection, etc 2469 public String[] getTetherableUsbRegexs() { 2470 enforceTetherAccessPermission(); 2471 if (isTetheringSupported()) { 2472 return mTethering.getTetherableUsbRegexs(); 2473 } else { 2474 return new String[0]; 2475 } 2476 } 2477 2478 public String[] getTetherableWifiRegexs() { 2479 enforceTetherAccessPermission(); 2480 if (isTetheringSupported()) { 2481 return mTethering.getTetherableWifiRegexs(); 2482 } else { 2483 return new String[0]; 2484 } 2485 } 2486 2487 public String[] getTetherableBluetoothRegexs() { 2488 enforceTetherAccessPermission(); 2489 if (isTetheringSupported()) { 2490 return mTethering.getTetherableBluetoothRegexs(); 2491 } else { 2492 return new String[0]; 2493 } 2494 } 2495 2496 public int setUsbTethering(boolean enable) { 2497 ConnectivityManager.enforceTetherChangePermission(mContext); 2498 if (isTetheringSupported()) { 2499 return mTethering.setUsbTethering(enable); 2500 } else { 2501 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2502 } 2503 } 2504 2505 // TODO - move iface listing, queries, etc to new module 2506 // javadoc from interface 2507 public String[] getTetherableIfaces() { 2508 enforceTetherAccessPermission(); 2509 return mTethering.getTetherableIfaces(); 2510 } 2511 2512 public String[] getTetheredIfaces() { 2513 enforceTetherAccessPermission(); 2514 return mTethering.getTetheredIfaces(); 2515 } 2516 2517 public String[] getTetheringErroredIfaces() { 2518 enforceTetherAccessPermission(); 2519 return mTethering.getErroredIfaces(); 2520 } 2521 2522 public String[] getTetheredDhcpRanges() { 2523 enforceConnectivityInternalPermission(); 2524 return mTethering.getTetheredDhcpRanges(); 2525 } 2526 2527 // if ro.tether.denied = true we default to no tethering 2528 // gservices could set the secure setting to 1 though to enable it on a build where it 2529 // had previously been turned off. 2530 public boolean isTetheringSupported() { 2531 enforceTetherAccessPermission(); 2532 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2533 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2534 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2535 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2536 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2537 mTethering.getTetherableWifiRegexs().length != 0 || 2538 mTethering.getTetherableBluetoothRegexs().length != 0) && 2539 mTethering.getUpstreamIfaceTypes().length != 0); 2540 } 2541 2542 // Called when we lose the default network and have no replacement yet. 2543 // This will automatically be cleared after X seconds or a new default network 2544 // becomes CONNECTED, whichever happens first. The timer is started by the 2545 // first caller and not restarted by subsequent callers. 2546 private void requestNetworkTransitionWakelock(String forWhom) { 2547 int serialNum = 0; 2548 synchronized (this) { 2549 if (mNetTransitionWakeLock.isHeld()) return; 2550 serialNum = ++mNetTransitionWakeLockSerialNumber; 2551 mNetTransitionWakeLock.acquire(); 2552 mNetTransitionWakeLockCausedBy = forWhom; 2553 } 2554 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2555 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2556 mNetTransitionWakeLockTimeout); 2557 return; 2558 } 2559 2560 // 100 percent is full good, 0 is full bad. 2561 public void reportInetCondition(int networkType, int percentage) { 2562 if (percentage > 50) return; // don't handle good network reports 2563 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2564 if (nai != null) reportBadNetwork(nai.network); 2565 } 2566 2567 public void reportBadNetwork(Network network) { 2568 enforceAccessPermission(); 2569 enforceInternetPermission(); 2570 2571 if (network == null) return; 2572 2573 final int uid = Binder.getCallingUid(); 2574 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2575 if (nai == null) return; 2576 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2577 synchronized (nai) { 2578 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2579 // which isn't meant to work on uncreated networks. 2580 if (!nai.created) return; 2581 2582 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2583 2584 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2585 } 2586 } 2587 2588 public ProxyInfo getDefaultProxy() { 2589 // this information is already available as a world read/writable jvm property 2590 // so this API change wouldn't have a benifit. It also breaks the passing 2591 // of proxy info to all the JVMs. 2592 // enforceAccessPermission(); 2593 synchronized (mProxyLock) { 2594 ProxyInfo ret = mGlobalProxy; 2595 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2596 return ret; 2597 } 2598 } 2599 2600 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2601 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2602 // proxy is null then there is no proxy in place). 2603 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2604 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2605 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2606 proxy = null; 2607 } 2608 return proxy; 2609 } 2610 2611 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2612 // better for determining if a new proxy broadcast is necessary: 2613 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2614 // avoid unnecessary broadcasts. 2615 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2616 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2617 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2618 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2619 // all set. 2620 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2621 a = canonicalizeProxyInfo(a); 2622 b = canonicalizeProxyInfo(b); 2623 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2624 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2625 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2626 } 2627 2628 public void setGlobalProxy(ProxyInfo proxyProperties) { 2629 enforceConnectivityInternalPermission(); 2630 2631 synchronized (mProxyLock) { 2632 if (proxyProperties == mGlobalProxy) return; 2633 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2634 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2635 2636 String host = ""; 2637 int port = 0; 2638 String exclList = ""; 2639 String pacFileUrl = ""; 2640 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2641 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2642 if (!proxyProperties.isValid()) { 2643 if (DBG) 2644 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2645 return; 2646 } 2647 mGlobalProxy = new ProxyInfo(proxyProperties); 2648 host = mGlobalProxy.getHost(); 2649 port = mGlobalProxy.getPort(); 2650 exclList = mGlobalProxy.getExclusionListAsString(); 2651 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2652 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2653 } 2654 } else { 2655 mGlobalProxy = null; 2656 } 2657 ContentResolver res = mContext.getContentResolver(); 2658 final long token = Binder.clearCallingIdentity(); 2659 try { 2660 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2661 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2662 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2663 exclList); 2664 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2665 } finally { 2666 Binder.restoreCallingIdentity(token); 2667 } 2668 2669 if (mGlobalProxy == null) { 2670 proxyProperties = mDefaultProxy; 2671 } 2672 sendProxyBroadcast(proxyProperties); 2673 } 2674 } 2675 2676 private void loadGlobalProxy() { 2677 ContentResolver res = mContext.getContentResolver(); 2678 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2679 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2680 String exclList = Settings.Global.getString(res, 2681 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2682 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2683 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2684 ProxyInfo proxyProperties; 2685 if (!TextUtils.isEmpty(pacFileUrl)) { 2686 proxyProperties = new ProxyInfo(pacFileUrl); 2687 } else { 2688 proxyProperties = new ProxyInfo(host, port, exclList); 2689 } 2690 if (!proxyProperties.isValid()) { 2691 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2692 return; 2693 } 2694 2695 synchronized (mProxyLock) { 2696 mGlobalProxy = proxyProperties; 2697 } 2698 } 2699 } 2700 2701 public ProxyInfo getGlobalProxy() { 2702 // this information is already available as a world read/writable jvm property 2703 // so this API change wouldn't have a benifit. It also breaks the passing 2704 // of proxy info to all the JVMs. 2705 // enforceAccessPermission(); 2706 synchronized (mProxyLock) { 2707 return mGlobalProxy; 2708 } 2709 } 2710 2711 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2712 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2713 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2714 proxy = null; 2715 } 2716 synchronized (mProxyLock) { 2717 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2718 if (mDefaultProxy == proxy) return; // catches repeated nulls 2719 if (proxy != null && !proxy.isValid()) { 2720 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2721 return; 2722 } 2723 2724 // This call could be coming from the PacManager, containing the port of the local 2725 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2726 // global (to get the correct local port), and send a broadcast. 2727 // TODO: Switch PacManager to have its own message to send back rather than 2728 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2729 if ((mGlobalProxy != null) && (proxy != null) 2730 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2731 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2732 mGlobalProxy = proxy; 2733 sendProxyBroadcast(mGlobalProxy); 2734 return; 2735 } 2736 mDefaultProxy = proxy; 2737 2738 if (mGlobalProxy != null) return; 2739 if (!mDefaultProxyDisabled) { 2740 sendProxyBroadcast(proxy); 2741 } 2742 } 2743 } 2744 2745 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2746 // This method gets called when any network changes proxy, but the broadcast only ever contains 2747 // the default proxy (even if it hasn't changed). 2748 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2749 // world where an app might be bound to a non-default network. 2750 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2751 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2752 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2753 2754 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2755 sendProxyBroadcast(getDefaultProxy()); 2756 } 2757 } 2758 2759 private void handleDeprecatedGlobalHttpProxy() { 2760 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2761 Settings.Global.HTTP_PROXY); 2762 if (!TextUtils.isEmpty(proxy)) { 2763 String data[] = proxy.split(":"); 2764 if (data.length == 0) { 2765 return; 2766 } 2767 2768 String proxyHost = data[0]; 2769 int proxyPort = 8080; 2770 if (data.length > 1) { 2771 try { 2772 proxyPort = Integer.parseInt(data[1]); 2773 } catch (NumberFormatException e) { 2774 return; 2775 } 2776 } 2777 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2778 setGlobalProxy(p); 2779 } 2780 } 2781 2782 private void sendProxyBroadcast(ProxyInfo proxy) { 2783 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2784 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2785 if (DBG) log("sending Proxy Broadcast for " + proxy); 2786 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2787 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2788 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2789 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2790 final long ident = Binder.clearCallingIdentity(); 2791 try { 2792 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2793 } finally { 2794 Binder.restoreCallingIdentity(ident); 2795 } 2796 } 2797 2798 private static class SettingsObserver extends ContentObserver { 2799 private int mWhat; 2800 private Handler mHandler; 2801 SettingsObserver(Handler handler, int what) { 2802 super(handler); 2803 mHandler = handler; 2804 mWhat = what; 2805 } 2806 2807 void observe(Context context) { 2808 ContentResolver resolver = context.getContentResolver(); 2809 resolver.registerContentObserver(Settings.Global.getUriFor( 2810 Settings.Global.HTTP_PROXY), false, this); 2811 } 2812 2813 @Override 2814 public void onChange(boolean selfChange) { 2815 mHandler.obtainMessage(mWhat).sendToTarget(); 2816 } 2817 } 2818 2819 private static void log(String s) { 2820 Slog.d(TAG, s); 2821 } 2822 2823 private static void loge(String s) { 2824 Slog.e(TAG, s); 2825 } 2826 2827 private static <T> T checkNotNull(T value, String message) { 2828 if (value == null) { 2829 throw new NullPointerException(message); 2830 } 2831 return value; 2832 } 2833 2834 /** 2835 * Prepare for a VPN application. 2836 * Permissions are checked in Vpn class. 2837 * @hide 2838 */ 2839 @Override 2840 public boolean prepareVpn(String oldPackage, String newPackage) { 2841 throwIfLockdownEnabled(); 2842 int user = UserHandle.getUserId(Binder.getCallingUid()); 2843 synchronized(mVpns) { 2844 return mVpns.get(user).prepare(oldPackage, newPackage); 2845 } 2846 } 2847 2848 /** 2849 * Set whether the current VPN package has the ability to launch VPNs without 2850 * user intervention. This method is used by system-privileged apps. 2851 * Permissions are checked in Vpn class. 2852 * @hide 2853 */ 2854 @Override 2855 public void setVpnPackageAuthorization(boolean authorized) { 2856 int user = UserHandle.getUserId(Binder.getCallingUid()); 2857 synchronized(mVpns) { 2858 mVpns.get(user).setPackageAuthorization(authorized); 2859 } 2860 } 2861 2862 /** 2863 * Configure a TUN interface and return its file descriptor. Parameters 2864 * are encoded and opaque to this class. This method is used by VpnBuilder 2865 * and not available in ConnectivityManager. Permissions are checked in 2866 * Vpn class. 2867 * @hide 2868 */ 2869 @Override 2870 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2871 throwIfLockdownEnabled(); 2872 int user = UserHandle.getUserId(Binder.getCallingUid()); 2873 synchronized(mVpns) { 2874 return mVpns.get(user).establish(config); 2875 } 2876 } 2877 2878 /** 2879 * Start legacy VPN, controlling native daemons as needed. Creates a 2880 * secondary thread to perform connection work, returning quickly. 2881 */ 2882 @Override 2883 public void startLegacyVpn(VpnProfile profile) { 2884 throwIfLockdownEnabled(); 2885 final LinkProperties egress = getActiveLinkProperties(); 2886 if (egress == null) { 2887 throw new IllegalStateException("Missing active network connection"); 2888 } 2889 int user = UserHandle.getUserId(Binder.getCallingUid()); 2890 synchronized(mVpns) { 2891 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2892 } 2893 } 2894 2895 /** 2896 * Return the information of the ongoing legacy VPN. This method is used 2897 * by VpnSettings and not available in ConnectivityManager. Permissions 2898 * are checked in Vpn class. 2899 * @hide 2900 */ 2901 @Override 2902 public LegacyVpnInfo getLegacyVpnInfo() { 2903 throwIfLockdownEnabled(); 2904 int user = UserHandle.getUserId(Binder.getCallingUid()); 2905 synchronized(mVpns) { 2906 return mVpns.get(user).getLegacyVpnInfo(); 2907 } 2908 } 2909 2910 /** 2911 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2912 * not available in ConnectivityManager. 2913 * Permissions are checked in Vpn class. 2914 * @hide 2915 */ 2916 @Override 2917 public VpnConfig getVpnConfig() { 2918 int user = UserHandle.getUserId(Binder.getCallingUid()); 2919 synchronized(mVpns) { 2920 return mVpns.get(user).getVpnConfig(); 2921 } 2922 } 2923 2924 @Override 2925 public boolean updateLockdownVpn() { 2926 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2927 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2928 return false; 2929 } 2930 2931 // Tear down existing lockdown if profile was removed 2932 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2933 if (mLockdownEnabled) { 2934 if (!mKeyStore.isUnlocked()) { 2935 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2936 return false; 2937 } 2938 2939 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2940 final VpnProfile profile = VpnProfile.decode( 2941 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2942 int user = UserHandle.getUserId(Binder.getCallingUid()); 2943 synchronized(mVpns) { 2944 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2945 profile)); 2946 } 2947 } else { 2948 setLockdownTracker(null); 2949 } 2950 2951 return true; 2952 } 2953 2954 /** 2955 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2956 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2957 */ 2958 private void setLockdownTracker(LockdownVpnTracker tracker) { 2959 // Shutdown any existing tracker 2960 final LockdownVpnTracker existing = mLockdownTracker; 2961 mLockdownTracker = null; 2962 if (existing != null) { 2963 existing.shutdown(); 2964 } 2965 2966 try { 2967 if (tracker != null) { 2968 mNetd.setFirewallEnabled(true); 2969 mNetd.setFirewallInterfaceRule("lo", true); 2970 mLockdownTracker = tracker; 2971 mLockdownTracker.init(); 2972 } else { 2973 mNetd.setFirewallEnabled(false); 2974 } 2975 } catch (RemoteException e) { 2976 // ignored; NMS lives inside system_server 2977 } 2978 } 2979 2980 private void throwIfLockdownEnabled() { 2981 if (mLockdownEnabled) { 2982 throw new IllegalStateException("Unavailable in lockdown mode"); 2983 } 2984 } 2985 2986 public void supplyMessenger(int networkType, Messenger messenger) { 2987 enforceConnectivityInternalPermission(); 2988 2989 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2990 mNetTrackers[networkType].supplyMessenger(messenger); 2991 } 2992 } 2993 2994 public int findConnectionTypeForIface(String iface) { 2995 enforceConnectivityInternalPermission(); 2996 2997 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2998 2999 synchronized(mNetworkForNetId) { 3000 for (int i = 0; i < mNetworkForNetId.size(); i++) { 3001 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 3002 LinkProperties lp = nai.linkProperties; 3003 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 3004 return nai.networkInfo.getType(); 3005 } 3006 } 3007 } 3008 return ConnectivityManager.TYPE_NONE; 3009 } 3010 3011 /** 3012 * Have mobile data fail fast if enabled. 3013 * 3014 * @param enabled DctConstants.ENABLED/DISABLED 3015 */ 3016 private void setEnableFailFastMobileData(int enabled) { 3017 int tag; 3018 3019 if (enabled == DctConstants.ENABLED) { 3020 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3021 } else { 3022 tag = mEnableFailFastMobileDataTag.get(); 3023 } 3024 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3025 enabled)); 3026 } 3027 3028 @Override 3029 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3030 // TODO: Remove? Any reason to trigger a provisioning check? 3031 return -1; 3032 } 3033 3034 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3035 private volatile boolean mIsNotificationVisible = false; 3036 3037 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3038 if (DBG) { 3039 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3040 + " action=" + action); 3041 } 3042 Intent intent = new Intent(action); 3043 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3044 // Concatenate the range of types onto the range of NetIDs. 3045 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3046 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3047 } 3048 3049 /** 3050 * Show or hide network provisioning notificaitons. 3051 * 3052 * @param id an identifier that uniquely identifies this notification. This must match 3053 * between show and hide calls. We use the NetID value but for legacy callers 3054 * we concatenate the range of types with the range of NetIDs. 3055 */ 3056 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3057 String extraInfo, PendingIntent intent) { 3058 if (DBG) { 3059 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3060 networkType + " extraInfo=" + extraInfo); 3061 } 3062 3063 Resources r = Resources.getSystem(); 3064 NotificationManager notificationManager = (NotificationManager) mContext 3065 .getSystemService(Context.NOTIFICATION_SERVICE); 3066 3067 if (visible) { 3068 CharSequence title; 3069 CharSequence details; 3070 int icon; 3071 Notification notification = new Notification(); 3072 switch (networkType) { 3073 case ConnectivityManager.TYPE_WIFI: 3074 title = r.getString(R.string.wifi_available_sign_in, 0); 3075 details = r.getString(R.string.network_available_sign_in_detailed, 3076 extraInfo); 3077 icon = R.drawable.stat_notify_wifi_in_range; 3078 break; 3079 case ConnectivityManager.TYPE_MOBILE: 3080 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3081 title = r.getString(R.string.network_available_sign_in, 0); 3082 // TODO: Change this to pull from NetworkInfo once a printable 3083 // name has been added to it 3084 details = mTelephonyManager.getNetworkOperatorName(); 3085 icon = R.drawable.stat_notify_rssi_in_range; 3086 break; 3087 default: 3088 title = r.getString(R.string.network_available_sign_in, 0); 3089 details = r.getString(R.string.network_available_sign_in_detailed, 3090 extraInfo); 3091 icon = R.drawable.stat_notify_rssi_in_range; 3092 break; 3093 } 3094 3095 notification.when = 0; 3096 notification.icon = icon; 3097 notification.flags = Notification.FLAG_AUTO_CANCEL; 3098 notification.tickerText = title; 3099 notification.color = mContext.getResources().getColor( 3100 com.android.internal.R.color.system_notification_accent_color); 3101 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3102 notification.contentIntent = intent; 3103 3104 try { 3105 notificationManager.notify(NOTIFICATION_ID, id, notification); 3106 } catch (NullPointerException npe) { 3107 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3108 npe.printStackTrace(); 3109 } 3110 } else { 3111 try { 3112 notificationManager.cancel(NOTIFICATION_ID, id); 3113 } catch (NullPointerException npe) { 3114 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3115 npe.printStackTrace(); 3116 } 3117 } 3118 mIsNotificationVisible = visible; 3119 } 3120 3121 /** Location to an updatable file listing carrier provisioning urls. 3122 * An example: 3123 * 3124 * <?xml version="1.0" encoding="utf-8"?> 3125 * <provisioningUrls> 3126 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3127 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3128 * </provisioningUrls> 3129 */ 3130 private static final String PROVISIONING_URL_PATH = 3131 "/data/misc/radio/provisioning_urls.xml"; 3132 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3133 3134 /** XML tag for root element. */ 3135 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3136 /** XML tag for individual url */ 3137 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3138 /** XML tag for redirected url */ 3139 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3140 /** XML attribute for mcc */ 3141 private static final String ATTR_MCC = "mcc"; 3142 /** XML attribute for mnc */ 3143 private static final String ATTR_MNC = "mnc"; 3144 3145 private static final int REDIRECTED_PROVISIONING = 1; 3146 private static final int PROVISIONING = 2; 3147 3148 private String getProvisioningUrlBaseFromFile(int type) { 3149 FileReader fileReader = null; 3150 XmlPullParser parser = null; 3151 Configuration config = mContext.getResources().getConfiguration(); 3152 String tagType; 3153 3154 switch (type) { 3155 case PROVISIONING: 3156 tagType = TAG_PROVISIONING_URL; 3157 break; 3158 case REDIRECTED_PROVISIONING: 3159 tagType = TAG_REDIRECTED_URL; 3160 break; 3161 default: 3162 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3163 type); 3164 } 3165 3166 try { 3167 fileReader = new FileReader(mProvisioningUrlFile); 3168 parser = Xml.newPullParser(); 3169 parser.setInput(fileReader); 3170 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3171 3172 while (true) { 3173 XmlUtils.nextElement(parser); 3174 3175 String element = parser.getName(); 3176 if (element == null) break; 3177 3178 if (element.equals(tagType)) { 3179 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3180 try { 3181 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3182 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3183 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3184 parser.next(); 3185 if (parser.getEventType() == XmlPullParser.TEXT) { 3186 return parser.getText(); 3187 } 3188 } 3189 } 3190 } catch (NumberFormatException e) { 3191 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3192 } 3193 } 3194 } 3195 return null; 3196 } catch (FileNotFoundException e) { 3197 loge("Carrier Provisioning Urls file not found"); 3198 } catch (XmlPullParserException e) { 3199 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3200 } catch (IOException e) { 3201 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3202 } finally { 3203 if (fileReader != null) { 3204 try { 3205 fileReader.close(); 3206 } catch (IOException e) {} 3207 } 3208 } 3209 return null; 3210 } 3211 3212 @Override 3213 public String getMobileRedirectedProvisioningUrl() { 3214 enforceConnectivityInternalPermission(); 3215 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3216 if (TextUtils.isEmpty(url)) { 3217 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3218 } 3219 return url; 3220 } 3221 3222 @Override 3223 public String getMobileProvisioningUrl() { 3224 enforceConnectivityInternalPermission(); 3225 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3226 if (TextUtils.isEmpty(url)) { 3227 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3228 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3229 } else { 3230 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3231 } 3232 // populate the iccid, imei and phone number in the provisioning url. 3233 if (!TextUtils.isEmpty(url)) { 3234 String phoneNumber = mTelephonyManager.getLine1Number(); 3235 if (TextUtils.isEmpty(phoneNumber)) { 3236 phoneNumber = "0000000000"; 3237 } 3238 url = String.format(url, 3239 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3240 mTelephonyManager.getDeviceId() /* IMEI */, 3241 phoneNumber /* Phone numer */); 3242 } 3243 3244 return url; 3245 } 3246 3247 @Override 3248 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3249 String action) { 3250 enforceConnectivityInternalPermission(); 3251 final long ident = Binder.clearCallingIdentity(); 3252 try { 3253 setProvNotificationVisible(visible, networkType, action); 3254 } finally { 3255 Binder.restoreCallingIdentity(ident); 3256 } 3257 } 3258 3259 @Override 3260 public void setAirplaneMode(boolean enable) { 3261 enforceConnectivityInternalPermission(); 3262 final long ident = Binder.clearCallingIdentity(); 3263 try { 3264 final ContentResolver cr = mContext.getContentResolver(); 3265 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3266 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3267 intent.putExtra("state", enable); 3268 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3269 } finally { 3270 Binder.restoreCallingIdentity(ident); 3271 } 3272 } 3273 3274 private void onUserStart(int userId) { 3275 synchronized(mVpns) { 3276 Vpn userVpn = mVpns.get(userId); 3277 if (userVpn != null) { 3278 loge("Starting user already has a VPN"); 3279 return; 3280 } 3281 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3282 mVpns.put(userId, userVpn); 3283 } 3284 } 3285 3286 private void onUserStop(int userId) { 3287 synchronized(mVpns) { 3288 Vpn userVpn = mVpns.get(userId); 3289 if (userVpn == null) { 3290 loge("Stopping user has no VPN"); 3291 return; 3292 } 3293 mVpns.delete(userId); 3294 } 3295 } 3296 3297 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3298 @Override 3299 public void onReceive(Context context, Intent intent) { 3300 final String action = intent.getAction(); 3301 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3302 if (userId == UserHandle.USER_NULL) return; 3303 3304 if (Intent.ACTION_USER_STARTING.equals(action)) { 3305 onUserStart(userId); 3306 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3307 onUserStop(userId); 3308 } 3309 } 3310 }; 3311 3312 /* Infrastructure for network sampling */ 3313 3314 private void handleNetworkSamplingTimeout() { 3315 3316 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3317 3318 // initialize list of interfaces .. 3319 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3320 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3321 for (NetworkStateTracker tracker : mNetTrackers) { 3322 if (tracker != null) { 3323 String ifaceName = tracker.getNetworkInterfaceName(); 3324 if (ifaceName != null) { 3325 mapIfaceToSample.put(ifaceName, null); 3326 } 3327 } 3328 } 3329 3330 // Read samples for all interfaces 3331 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3332 3333 // process samples for all networks 3334 for (NetworkStateTracker tracker : mNetTrackers) { 3335 if (tracker != null) { 3336 String ifaceName = tracker.getNetworkInterfaceName(); 3337 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3338 if (ss != null) { 3339 // end the previous sampling cycle 3340 tracker.stopSampling(ss); 3341 // start a new sampling cycle .. 3342 tracker.startSampling(ss); 3343 } 3344 } 3345 } 3346 3347 if (SAMPLE_DBG) log("Done."); 3348 3349 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3350 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3351 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3352 3353 if (SAMPLE_DBG) { 3354 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3355 } 3356 3357 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3358 } 3359 3360 /** 3361 * Sets a network sampling alarm. 3362 */ 3363 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3364 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3365 int alarmType; 3366 if (Resources.getSystem().getBoolean( 3367 R.bool.config_networkSamplingWakesDevice)) { 3368 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3369 } else { 3370 alarmType = AlarmManager.ELAPSED_REALTIME; 3371 } 3372 mAlarmManager.set(alarmType, wakeupTime, intent); 3373 } 3374 3375 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3376 new HashMap<Messenger, NetworkFactoryInfo>(); 3377 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3378 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3379 3380 private static class NetworkFactoryInfo { 3381 public final String name; 3382 public final Messenger messenger; 3383 public final AsyncChannel asyncChannel; 3384 3385 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3386 this.name = name; 3387 this.messenger = messenger; 3388 this.asyncChannel = asyncChannel; 3389 } 3390 } 3391 3392 /** 3393 * Tracks info about the requester. 3394 * Also used to notice when the calling process dies so we can self-expire 3395 */ 3396 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3397 static final boolean REQUEST = true; 3398 static final boolean LISTEN = false; 3399 3400 final NetworkRequest request; 3401 final PendingIntent mPendingIntent; 3402 boolean mPendingIntentSent; 3403 private final IBinder mBinder; 3404 final int mPid; 3405 final int mUid; 3406 final Messenger messenger; 3407 final boolean isRequest; 3408 3409 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3410 request = r; 3411 mPendingIntent = pi; 3412 messenger = null; 3413 mBinder = null; 3414 mPid = getCallingPid(); 3415 mUid = getCallingUid(); 3416 this.isRequest = isRequest; 3417 } 3418 3419 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3420 super(); 3421 messenger = m; 3422 request = r; 3423 mBinder = binder; 3424 mPid = getCallingPid(); 3425 mUid = getCallingUid(); 3426 this.isRequest = isRequest; 3427 mPendingIntent = null; 3428 3429 try { 3430 mBinder.linkToDeath(this, 0); 3431 } catch (RemoteException e) { 3432 binderDied(); 3433 } 3434 } 3435 3436 void unlinkDeathRecipient() { 3437 if (mBinder != null) { 3438 mBinder.unlinkToDeath(this, 0); 3439 } 3440 } 3441 3442 public void binderDied() { 3443 log("ConnectivityService NetworkRequestInfo binderDied(" + 3444 request + ", " + mBinder + ")"); 3445 releaseNetworkRequest(request); 3446 } 3447 3448 public String toString() { 3449 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3450 mPid + " for " + request + 3451 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3452 } 3453 } 3454 3455 @Override 3456 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3457 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3458 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3459 enforceNetworkRequestPermissions(networkCapabilities); 3460 enforceMeteredApnPolicy(networkCapabilities); 3461 3462 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3463 throw new IllegalArgumentException("Bad timeout specified"); 3464 } 3465 3466 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3467 nextNetworkRequestId()); 3468 if (DBG) log("requestNetwork for " + networkRequest); 3469 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3470 NetworkRequestInfo.REQUEST); 3471 3472 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3473 if (timeoutMs > 0) { 3474 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3475 nri), timeoutMs); 3476 } 3477 return networkRequest; 3478 } 3479 3480 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3481 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3482 == false) { 3483 enforceConnectivityInternalPermission(); 3484 } else { 3485 enforceChangePermission(); 3486 } 3487 } 3488 3489 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3490 // if UID is restricted, don't allow them to bring up metered APNs 3491 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3492 == false) { 3493 final int uidRules; 3494 final int uid = Binder.getCallingUid(); 3495 synchronized(mRulesLock) { 3496 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3497 } 3498 if ((uidRules & RULE_REJECT_METERED) != 0) { 3499 // we could silently fail or we can filter the available nets to only give 3500 // them those they have access to. Chose the more useful 3501 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3502 } 3503 } 3504 } 3505 3506 @Override 3507 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3508 PendingIntent operation) { 3509 checkNotNull(operation, "PendingIntent cannot be null."); 3510 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3511 enforceNetworkRequestPermissions(networkCapabilities); 3512 enforceMeteredApnPolicy(networkCapabilities); 3513 3514 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3515 nextNetworkRequestId()); 3516 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3517 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3518 NetworkRequestInfo.REQUEST); 3519 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3520 nri)); 3521 return networkRequest; 3522 } 3523 3524 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3525 mHandler.sendMessageDelayed( 3526 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3527 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3528 } 3529 3530 @Override 3531 public void releasePendingNetworkRequest(PendingIntent operation) { 3532 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3533 getCallingUid(), 0, operation)); 3534 } 3535 3536 @Override 3537 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3538 Messenger messenger, IBinder binder) { 3539 enforceAccessPermission(); 3540 3541 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3542 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3543 if (DBG) log("listenForNetwork for " + networkRequest); 3544 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3545 NetworkRequestInfo.LISTEN); 3546 3547 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3548 return networkRequest; 3549 } 3550 3551 @Override 3552 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3553 PendingIntent operation) { 3554 } 3555 3556 @Override 3557 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3558 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3559 0, networkRequest)); 3560 } 3561 3562 @Override 3563 public void registerNetworkFactory(Messenger messenger, String name) { 3564 enforceConnectivityInternalPermission(); 3565 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3566 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3567 } 3568 3569 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3570 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3571 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3572 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3573 } 3574 3575 @Override 3576 public void unregisterNetworkFactory(Messenger messenger) { 3577 enforceConnectivityInternalPermission(); 3578 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3579 } 3580 3581 private void handleUnregisterNetworkFactory(Messenger messenger) { 3582 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3583 if (nfi == null) { 3584 loge("Failed to find Messenger in unregisterNetworkFactory"); 3585 return; 3586 } 3587 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3588 } 3589 3590 /** 3591 * NetworkAgentInfo supporting a request by requestId. 3592 * These have already been vetted (their Capabilities satisfy the request) 3593 * and the are the highest scored network available. 3594 * the are keyed off the Requests requestId. 3595 */ 3596 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3597 new SparseArray<NetworkAgentInfo>(); 3598 3599 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3600 new SparseArray<NetworkAgentInfo>(); 3601 3602 // NetworkAgentInfo keyed off its connecting messenger 3603 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3604 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3605 new HashMap<Messenger, NetworkAgentInfo>(); 3606 3607 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3608 private final NetworkRequest mDefaultRequest; 3609 3610 private NetworkAgentInfo getDefaultNetwork() { 3611 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3612 } 3613 3614 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3615 return nai == getDefaultNetwork(); 3616 } 3617 3618 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3619 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3620 int currentScore, NetworkMisc networkMisc) { 3621 enforceConnectivityInternalPermission(); 3622 3623 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3624 // satisfies mDefaultRequest. 3625 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3626 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3627 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3628 new NetworkMisc(networkMisc), mDefaultRequest); 3629 synchronized (this) { 3630 nai.networkMonitor.systemReady = mSystemReady; 3631 } 3632 if (DBG) log("registerNetworkAgent " + nai); 3633 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3634 } 3635 3636 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3637 if (VDBG) log("Got NetworkAgent Messenger"); 3638 mNetworkAgentInfos.put(na.messenger, na); 3639 assignNextNetId(na); 3640 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3641 NetworkInfo networkInfo = na.networkInfo; 3642 na.networkInfo = null; 3643 updateNetworkInfo(na, networkInfo); 3644 } 3645 3646 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3647 LinkProperties newLp = networkAgent.linkProperties; 3648 int netId = networkAgent.network.netId; 3649 3650 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3651 // we do anything else, make sure its LinkProperties are accurate. 3652 if (networkAgent.clatd != null) { 3653 networkAgent.clatd.fixupLinkProperties(oldLp); 3654 } 3655 3656 updateInterfaces(newLp, oldLp, netId); 3657 updateMtu(newLp, oldLp); 3658 // TODO - figure out what to do for clat 3659// for (LinkProperties lp : newLp.getStackedLinks()) { 3660// updateMtu(lp, null); 3661// } 3662 updateTcpBufferSizes(networkAgent); 3663 3664 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3665 // For now, use it only when the network has Internet access. http://b/18327075 3666 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3667 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3668 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3669 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3670 3671 updateClat(newLp, oldLp, networkAgent); 3672 if (isDefaultNetwork(networkAgent)) { 3673 handleApplyDefaultProxy(newLp.getHttpProxy()); 3674 } else { 3675 updateProxy(newLp, oldLp, networkAgent); 3676 } 3677 // TODO - move this check to cover the whole function 3678 if (!Objects.equals(newLp, oldLp)) { 3679 notifyIfacesChanged(); 3680 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3681 } 3682 } 3683 3684 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3685 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3686 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3687 3688 if (!wasRunningClat && shouldRunClat) { 3689 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3690 nai.clatd.start(); 3691 } else if (wasRunningClat && !shouldRunClat) { 3692 nai.clatd.stop(); 3693 } 3694 } 3695 3696 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3697 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3698 if (oldLp != null) { 3699 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3700 } else if (newLp != null) { 3701 interfaceDiff.added = newLp.getAllInterfaceNames(); 3702 } 3703 for (String iface : interfaceDiff.added) { 3704 try { 3705 if (DBG) log("Adding iface " + iface + " to network " + netId); 3706 mNetd.addInterfaceToNetwork(iface, netId); 3707 } catch (Exception e) { 3708 loge("Exception adding interface: " + e); 3709 } 3710 } 3711 for (String iface : interfaceDiff.removed) { 3712 try { 3713 if (DBG) log("Removing iface " + iface + " from network " + netId); 3714 mNetd.removeInterfaceFromNetwork(iface, netId); 3715 } catch (Exception e) { 3716 loge("Exception removing interface: " + e); 3717 } 3718 } 3719 } 3720 3721 /** 3722 * Have netd update routes from oldLp to newLp. 3723 * @return true if routes changed between oldLp and newLp 3724 */ 3725 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3726 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3727 if (oldLp != null) { 3728 routeDiff = oldLp.compareAllRoutes(newLp); 3729 } else if (newLp != null) { 3730 routeDiff.added = newLp.getAllRoutes(); 3731 } 3732 3733 // add routes before removing old in case it helps with continuous connectivity 3734 3735 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3736 for (RouteInfo route : routeDiff.added) { 3737 if (route.hasGateway()) continue; 3738 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3739 try { 3740 mNetd.addRoute(netId, route); 3741 } catch (Exception e) { 3742 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3743 loge("Exception in addRoute for non-gateway: " + e); 3744 } 3745 } 3746 } 3747 for (RouteInfo route : routeDiff.added) { 3748 if (route.hasGateway() == false) continue; 3749 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3750 try { 3751 mNetd.addRoute(netId, route); 3752 } catch (Exception e) { 3753 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3754 loge("Exception in addRoute for gateway: " + e); 3755 } 3756 } 3757 } 3758 3759 for (RouteInfo route : routeDiff.removed) { 3760 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3761 try { 3762 mNetd.removeRoute(netId, route); 3763 } catch (Exception e) { 3764 loge("Exception in removeRoute: " + e); 3765 } 3766 } 3767 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3768 } 3769 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3770 boolean flush, boolean useDefaultDns) { 3771 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3772 Collection<InetAddress> dnses = newLp.getDnsServers(); 3773 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3774 dnses = new ArrayList(); 3775 dnses.add(mDefaultDns); 3776 if (DBG) { 3777 loge("no dns provided for netId " + netId + ", so using defaults"); 3778 } 3779 } 3780 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3781 try { 3782 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3783 newLp.getDomains()); 3784 } catch (Exception e) { 3785 loge("Exception in setDnsServersForNetwork: " + e); 3786 } 3787 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3788 if (defaultNai != null && defaultNai.network.netId == netId) { 3789 setDefaultDnsSystemProperties(dnses); 3790 } 3791 flushVmDnsCache(); 3792 } else if (flush) { 3793 try { 3794 mNetd.flushNetworkDnsCache(netId); 3795 } catch (Exception e) { 3796 loge("Exception in flushNetworkDnsCache: " + e); 3797 } 3798 flushVmDnsCache(); 3799 } 3800 } 3801 3802 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3803 int last = 0; 3804 for (InetAddress dns : dnses) { 3805 ++last; 3806 String key = "net.dns" + last; 3807 String value = dns.getHostAddress(); 3808 SystemProperties.set(key, value); 3809 } 3810 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3811 String key = "net.dns" + i; 3812 SystemProperties.set(key, ""); 3813 } 3814 mNumDnsEntries = last; 3815 } 3816 3817 private void updateCapabilities(NetworkAgentInfo networkAgent, 3818 NetworkCapabilities networkCapabilities) { 3819 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3820 synchronized (networkAgent) { 3821 networkAgent.networkCapabilities = networkCapabilities; 3822 } 3823 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3824 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3825 } 3826 } 3827 3828 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3829 for (int i = 0; i < nai.networkRequests.size(); i++) { 3830 NetworkRequest nr = nai.networkRequests.valueAt(i); 3831 // Don't send listening requests to factories. b/17393458 3832 if (!isRequest(nr)) continue; 3833 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3834 } 3835 } 3836 3837 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3838 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3839 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3840 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3841 networkRequest); 3842 } 3843 } 3844 3845 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3846 int notificationType) { 3847 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 3848 Intent intent = new Intent(); 3849 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3850 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3851 nri.mPendingIntentSent = true; 3852 sendIntent(nri.mPendingIntent, intent); 3853 } 3854 // else not handled 3855 } 3856 3857 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3858 mPendingIntentWakeLock.acquire(); 3859 try { 3860 if (DBG) log("Sending " + pendingIntent); 3861 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3862 } catch (PendingIntent.CanceledException e) { 3863 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3864 mPendingIntentWakeLock.release(); 3865 releasePendingNetworkRequest(pendingIntent); 3866 } 3867 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3868 } 3869 3870 @Override 3871 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3872 String resultData, Bundle resultExtras) { 3873 if (DBG) log("Finished sending " + pendingIntent); 3874 mPendingIntentWakeLock.release(); 3875 // Release with a delay so the receiving client has an opportunity to put in its 3876 // own request. 3877 releasePendingNetworkRequestWithDelay(pendingIntent); 3878 } 3879 3880 private void callCallbackForRequest(NetworkRequestInfo nri, 3881 NetworkAgentInfo networkAgent, int notificationType) { 3882 if (nri.messenger == null) return; // Default request has no msgr 3883 Bundle bundle = new Bundle(); 3884 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3885 new NetworkRequest(nri.request)); 3886 Message msg = Message.obtain(); 3887 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3888 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3889 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3890 } 3891 switch (notificationType) { 3892 case ConnectivityManager.CALLBACK_LOSING: { 3893 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3894 break; 3895 } 3896 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3897 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3898 new NetworkCapabilities(networkAgent.networkCapabilities)); 3899 break; 3900 } 3901 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3902 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3903 new LinkProperties(networkAgent.linkProperties)); 3904 break; 3905 } 3906 } 3907 msg.what = notificationType; 3908 msg.setData(bundle); 3909 try { 3910 if (VDBG) { 3911 log("sending notification " + notifyTypeToName(notificationType) + 3912 " for " + nri.request); 3913 } 3914 nri.messenger.send(msg); 3915 } catch (RemoteException e) { 3916 // may occur naturally in the race of binder death. 3917 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3918 } 3919 } 3920 3921 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3922 for (int i = 0; i < nai.networkRequests.size(); i++) { 3923 NetworkRequest nr = nai.networkRequests.valueAt(i); 3924 // Ignore listening requests. 3925 if (!isRequest(nr)) continue; 3926 loge("Dead network still had at least " + nr); 3927 break; 3928 } 3929 nai.asyncChannel.disconnect(); 3930 } 3931 3932 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3933 if (oldNetwork == null) { 3934 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3935 return; 3936 } 3937 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3938 teardownUnneededNetwork(oldNetwork); 3939 } 3940 3941 private void makeDefault(NetworkAgentInfo newNetwork) { 3942 if (DBG) log("Switching to new default network: " + newNetwork); 3943 setupDataActivityTracking(newNetwork); 3944 try { 3945 mNetd.setDefaultNetId(newNetwork.network.netId); 3946 } catch (Exception e) { 3947 loge("Exception setting default network :" + e); 3948 } 3949 notifyLockdownVpn(newNetwork); 3950 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3951 updateTcpBufferSizes(newNetwork); 3952 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 3953 } 3954 3955 // Handles a network appearing or improving its score. 3956 // 3957 // - Evaluates all current NetworkRequests that can be 3958 // satisfied by newNetwork, and reassigns to newNetwork 3959 // any such requests for which newNetwork is the best. 3960 // 3961 // - Lingers any validated Networks that as a result are no longer 3962 // needed. A network is needed if it is the best network for 3963 // one or more NetworkRequests, or if it is a VPN. 3964 // 3965 // - Tears down newNetwork if it just became validated 3966 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 3967 // 3968 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 3969 // networks that have no chance (i.e. even if validated) 3970 // of becoming the highest scoring network. 3971 // 3972 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3973 // it does not remove NetworkRequests that other Networks could better satisfy. 3974 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3975 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3976 // as it performs better by a factor of the number of Networks. 3977 // 3978 // @param newNetwork is the network to be matched against NetworkRequests. 3979 // @param nascent indicates if newNetwork just became validated, in which case it should be 3980 // torn down if unneeded. 3981 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 3982 // performed to tear down unvalidated networks that have no chance (i.e. even if 3983 // validated) of becoming the highest scoring network. 3984 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 3985 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 3986 if (!newNetwork.created) return; 3987 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.validated) { 3988 loge("ERROR: nascent network not validated."); 3989 } 3990 boolean keep = newNetwork.isVPN(); 3991 boolean isNewDefault = false; 3992 NetworkAgentInfo oldDefaultNetwork = null; 3993 if (DBG) log("rematching " + newNetwork.name()); 3994 // Find and migrate to this Network any NetworkRequests for 3995 // which this network is now the best. 3996 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3997 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3998 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3999 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4000 if (newNetwork == currentNetwork) { 4001 if (DBG) { 4002 log("Network " + newNetwork.name() + " was already satisfying" + 4003 " request " + nri.request.requestId + ". No change."); 4004 } 4005 keep = true; 4006 continue; 4007 } 4008 4009 // check if it satisfies the NetworkCapabilities 4010 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4011 if (newNetwork.satisfies(nri.request)) { 4012 if (!nri.isRequest) { 4013 // This is not a request, it's a callback listener. 4014 // Add it to newNetwork regardless of score. 4015 newNetwork.addRequest(nri.request); 4016 continue; 4017 } 4018 4019 // next check if it's better than any current network we're using for 4020 // this request 4021 if (VDBG) { 4022 log("currentScore = " + 4023 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4024 ", newScore = " + newNetwork.getCurrentScore()); 4025 } 4026 if (currentNetwork == null || 4027 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4028 if (currentNetwork != null) { 4029 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4030 currentNetwork.networkRequests.remove(nri.request.requestId); 4031 currentNetwork.networkLingered.add(nri.request); 4032 affectedNetworks.add(currentNetwork); 4033 } else { 4034 if (DBG) log(" accepting network in place of null"); 4035 } 4036 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4037 newNetwork.addRequest(nri.request); 4038 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4039 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4040 } 4041 keep = true; 4042 // Tell NetworkFactories about the new score, so they can stop 4043 // trying to connect if they know they cannot match it. 4044 // TODO - this could get expensive if we have alot of requests for this 4045 // network. Think about if there is a way to reduce this. Push 4046 // netid->request mapping to each factory? 4047 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4048 if (mDefaultRequest.requestId == nri.request.requestId) { 4049 isNewDefault = true; 4050 oldDefaultNetwork = currentNetwork; 4051 } 4052 } 4053 } 4054 } 4055 // Linger any networks that are no longer needed. 4056 for (NetworkAgentInfo nai : affectedNetworks) { 4057 boolean teardown = !nai.isVPN() && nai.validated; 4058 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4059 NetworkRequest nr = nai.networkRequests.valueAt(i); 4060 try { 4061 if (isRequest(nr)) { 4062 teardown = false; 4063 } 4064 } catch (Exception e) { 4065 loge("Request " + nr + " not found in mNetworkRequests."); 4066 loge(" it came from request list of " + nai.name()); 4067 } 4068 } 4069 if (teardown) { 4070 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4071 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4072 } else { 4073 unlinger(nai); 4074 } 4075 } 4076 if (keep) { 4077 if (isNewDefault) { 4078 // Notify system services that this network is up. 4079 makeDefault(newNetwork); 4080 synchronized (ConnectivityService.this) { 4081 // have a new default network, release the transition wakelock in 4082 // a second if it's held. The second pause is to allow apps 4083 // to reconnect over the new network 4084 if (mNetTransitionWakeLock.isHeld()) { 4085 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4086 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4087 mNetTransitionWakeLockSerialNumber, 0), 4088 1000); 4089 } 4090 } 4091 // Maintain the illusion: since the legacy API only 4092 // understands one network at a time, we must pretend 4093 // that the current default network disconnected before 4094 // the new one connected. 4095 if (oldDefaultNetwork != null) { 4096 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4097 oldDefaultNetwork); 4098 } 4099 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4100 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4101 notifyLockdownVpn(newNetwork); 4102 } 4103 4104 // Notify battery stats service about this network, both the normal 4105 // interface and any stacked links. 4106 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4107 try { 4108 final IBatteryStats bs = BatteryStatsService.getService(); 4109 final int type = newNetwork.networkInfo.getType(); 4110 4111 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4112 bs.noteNetworkInterfaceType(baseIface, type); 4113 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4114 final String stackedIface = stacked.getInterfaceName(); 4115 bs.noteNetworkInterfaceType(stackedIface, type); 4116 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4117 } 4118 } catch (RemoteException ignored) { 4119 } 4120 4121 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4122 4123 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4124 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4125 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4126 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4127 if (newNetwork.isVPN()) { 4128 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4129 } 4130 } else if (nascent == NascentState.JUST_VALIDATED) { 4131 // Only tear down newly validated networks here. Leave unvalidated to either become 4132 // validated (and get evaluated against peers, one losing here), or get reaped (see 4133 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4134 // network. Networks that have been up for a while and are validated should be torn 4135 // down via the lingering process so communication on that network is given time to 4136 // wrap up. 4137 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4138 teardownUnneededNetwork(newNetwork); 4139 } 4140 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4141 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4142 if (!nai.created || nai.validated || nai.isVPN()) continue; 4143 boolean reap = true; 4144 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4145 // If this Network is already the highest scoring Network for a request, or if 4146 // there is hope for it to become one if it validated, then don't reap it. 4147 if (nri.isRequest && nai.satisfies(nri.request) && 4148 (nai.networkRequests.get(nri.request.requestId) != null || 4149 // Note that this catches two important cases: 4150 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 4151 // is currently satisfying the request. This is desirable when 4152 // cellular ends up validating but WiFi does not. 4153 // 2. Unvalidated WiFi will not be reaped when validated cellular 4154 // is currently satsifying the request. This is desirable when 4155 // WiFi ends up validating and out scoring cellular. 4156 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 4157 nai.getCurrentScoreAsValidated())) { 4158 reap = false; 4159 break; 4160 } 4161 } 4162 if (reap) { 4163 if (DBG) log("Reaping " + nai.name()); 4164 teardownUnneededNetwork(nai); 4165 } 4166 } 4167 } 4168 } 4169 4170 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4171 // being disconnected. 4172 // If only one Network's score or capabilities have been modified since the last time 4173 // this function was called, pass this Network in via the "changed" arugment, otherwise 4174 // pass null. 4175 // If only one Network has been changed but its NetworkCapabilities have not changed, 4176 // pass in the Network's score (from getCurrentScore()) prior to the change via 4177 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4178 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4179 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4180 // to avoid the slowness. It is not simply enough to process just "changed", for 4181 // example in the case where "changed"'s score decreases and another network should begin 4182 // satifying a NetworkRequest that "changed" currently satisfies. 4183 4184 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4185 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4186 // rematchNetworkAndRequests() handles. 4187 if (changed != null && oldScore < changed.getCurrentScore()) { 4188 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4189 ReapUnvalidatedNetworks.REAP); 4190 } else { 4191 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4192 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4193 NascentState.NOT_JUST_VALIDATED, 4194 // Only reap the last time through the loop. Reaping before all rematching 4195 // is complete could incorrectly teardown a network that hasn't yet been 4196 // rematched. 4197 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4198 : ReapUnvalidatedNetworks.REAP); 4199 } 4200 } 4201 } 4202 4203 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4204 // Don't bother updating until we've graduated to validated at least once. 4205 if (!nai.validated) return; 4206 // For now only update icons for default connection. 4207 // TODO: Update WiFi and cellular icons separately. b/17237507 4208 if (!isDefaultNetwork(nai)) return; 4209 4210 int newInetCondition = valid ? 100 : 0; 4211 // Don't repeat publish. 4212 if (newInetCondition == mDefaultInetConditionPublished) return; 4213 4214 mDefaultInetConditionPublished = newInetCondition; 4215 sendInetConditionBroadcast(nai.networkInfo); 4216 } 4217 4218 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4219 if (mLockdownTracker != null) { 4220 if (nai != null && nai.isVPN()) { 4221 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4222 } else { 4223 mLockdownTracker.onNetworkInfoChanged(); 4224 } 4225 } 4226 } 4227 4228 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4229 NetworkInfo.State state = newInfo.getState(); 4230 NetworkInfo oldInfo = null; 4231 synchronized (networkAgent) { 4232 oldInfo = networkAgent.networkInfo; 4233 networkAgent.networkInfo = newInfo; 4234 } 4235 notifyLockdownVpn(networkAgent); 4236 4237 if (oldInfo != null && oldInfo.getState() == state) { 4238 if (VDBG) log("ignoring duplicate network state non-change"); 4239 return; 4240 } 4241 if (DBG) { 4242 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4243 (oldInfo == null ? "null" : oldInfo.getState()) + 4244 " to " + state); 4245 } 4246 4247 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4248 try { 4249 // This should never fail. Specifying an already in use NetID will cause failure. 4250 if (networkAgent.isVPN()) { 4251 mNetd.createVirtualNetwork(networkAgent.network.netId, 4252 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4253 (networkAgent.networkMisc == null || 4254 !networkAgent.networkMisc.allowBypass)); 4255 } else { 4256 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4257 } 4258 } catch (Exception e) { 4259 loge("Error creating network " + networkAgent.network.netId + ": " 4260 + e.getMessage()); 4261 return; 4262 } 4263 networkAgent.created = true; 4264 updateLinkProperties(networkAgent, null); 4265 notifyIfacesChanged(); 4266 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4267 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4268 if (networkAgent.isVPN()) { 4269 // Temporarily disable the default proxy (not global). 4270 synchronized (mProxyLock) { 4271 if (!mDefaultProxyDisabled) { 4272 mDefaultProxyDisabled = true; 4273 if (mGlobalProxy == null && mDefaultProxy != null) { 4274 sendProxyBroadcast(null); 4275 } 4276 } 4277 } 4278 // TODO: support proxy per network. 4279 } 4280 // Consider network even though it is not yet validated. 4281 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4282 ReapUnvalidatedNetworks.REAP); 4283 } else if (state == NetworkInfo.State.DISCONNECTED || 4284 state == NetworkInfo.State.SUSPENDED) { 4285 networkAgent.asyncChannel.disconnect(); 4286 if (networkAgent.isVPN()) { 4287 synchronized (mProxyLock) { 4288 if (mDefaultProxyDisabled) { 4289 mDefaultProxyDisabled = false; 4290 if (mGlobalProxy == null && mDefaultProxy != null) { 4291 sendProxyBroadcast(mDefaultProxy); 4292 } 4293 } 4294 } 4295 } 4296 } 4297 } 4298 4299 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4300 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4301 if (score < 0) { 4302 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4303 "). Bumping score to min of 0"); 4304 score = 0; 4305 } 4306 4307 final int oldScore = nai.getCurrentScore(); 4308 nai.setCurrentScore(score); 4309 4310 rematchAllNetworksAndRequests(nai, oldScore); 4311 4312 sendUpdatedScoreToFactories(nai); 4313 } 4314 4315 // notify only this one new request of the current state 4316 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4317 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4318 // TODO - read state from monitor to decide what to send. 4319// if (nai.networkMonitor.isLingering()) { 4320// notifyType = NetworkCallbacks.LOSING; 4321// } else if (nai.networkMonitor.isEvaluating()) { 4322// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4323// } 4324 if (nri.mPendingIntent == null) { 4325 callCallbackForRequest(nri, nai, notifyType); 4326 } else { 4327 sendPendingIntentForRequest(nri, nai, notifyType); 4328 } 4329 } 4330 4331 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4332 // The NetworkInfo we actually send out has no bearing on the real 4333 // state of affairs. For example, if the default connection is mobile, 4334 // and a request for HIPRI has just gone away, we need to pretend that 4335 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4336 // the state to DISCONNECTED, even though the network is of type MOBILE 4337 // and is still connected. 4338 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4339 info.setType(type); 4340 if (connected) { 4341 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4342 sendConnectedBroadcast(info); 4343 } else { 4344 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4345 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4346 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4347 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4348 if (info.isFailover()) { 4349 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4350 nai.networkInfo.setFailover(false); 4351 } 4352 if (info.getReason() != null) { 4353 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4354 } 4355 if (info.getExtraInfo() != null) { 4356 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4357 } 4358 NetworkAgentInfo newDefaultAgent = null; 4359 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4360 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4361 if (newDefaultAgent != null) { 4362 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4363 newDefaultAgent.networkInfo); 4364 } else { 4365 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4366 } 4367 } 4368 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4369 mDefaultInetConditionPublished); 4370 final Intent immediateIntent = new Intent(intent); 4371 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4372 sendStickyBroadcast(immediateIntent); 4373 sendStickyBroadcast(intent); 4374 if (newDefaultAgent != null) { 4375 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4376 } 4377 } 4378 } 4379 4380 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4381 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4382 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4383 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4384 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4385 if (VDBG) log(" sending notification for " + nr); 4386 if (nri.mPendingIntent == null) { 4387 callCallbackForRequest(nri, networkAgent, notifyType); 4388 } else { 4389 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4390 } 4391 } 4392 } 4393 4394 private String notifyTypeToName(int notifyType) { 4395 switch (notifyType) { 4396 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4397 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4398 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4399 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4400 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4401 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4402 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4403 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4404 } 4405 return "UNKNOWN"; 4406 } 4407 4408 /** 4409 * Notify other system services that set of active ifaces has changed. 4410 */ 4411 private void notifyIfacesChanged() { 4412 try { 4413 mStatsService.forceUpdateIfaces(); 4414 } catch (Exception ignored) { 4415 } 4416 } 4417 4418 @Override 4419 public boolean addVpnAddress(String address, int prefixLength) { 4420 throwIfLockdownEnabled(); 4421 int user = UserHandle.getUserId(Binder.getCallingUid()); 4422 synchronized (mVpns) { 4423 return mVpns.get(user).addAddress(address, prefixLength); 4424 } 4425 } 4426 4427 @Override 4428 public boolean removeVpnAddress(String address, int prefixLength) { 4429 throwIfLockdownEnabled(); 4430 int user = UserHandle.getUserId(Binder.getCallingUid()); 4431 synchronized (mVpns) { 4432 return mVpns.get(user).removeAddress(address, prefixLength); 4433 } 4434 } 4435 4436 @Override 4437 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4438 throwIfLockdownEnabled(); 4439 int user = UserHandle.getUserId(Binder.getCallingUid()); 4440 synchronized (mVpns) { 4441 return mVpns.get(user).setUnderlyingNetworks(networks); 4442 } 4443 } 4444} 4445