ConnectivityService.java revision 3d911469a190437fe936103e861bfa171841fbd6
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.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 30import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 31import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 33 34import android.annotation.Nullable; 35import android.app.AlarmManager; 36import android.app.Notification; 37import android.app.NotificationManager; 38import android.app.PendingIntent; 39import android.content.BroadcastReceiver; 40import android.content.ContentResolver; 41import android.content.Context; 42import android.content.Intent; 43import android.content.IntentFilter; 44import android.content.pm.PackageManager; 45import android.content.res.Configuration; 46import android.content.res.Resources; 47import android.database.ContentObserver; 48import android.net.ConnectivityManager; 49import android.net.IConnectivityManager; 50import android.net.INetworkManagementEventObserver; 51import android.net.INetworkPolicyListener; 52import android.net.INetworkPolicyManager; 53import android.net.INetworkStatsService; 54import android.net.LinkProperties; 55import android.net.LinkProperties.CompareResult; 56import android.net.Network; 57import android.net.NetworkAgent; 58import android.net.NetworkCapabilities; 59import android.net.NetworkConfig; 60import android.net.NetworkInfo; 61import android.net.NetworkInfo.DetailedState; 62import android.net.NetworkMisc; 63import android.net.NetworkQuotaInfo; 64import android.net.NetworkRequest; 65import android.net.NetworkState; 66import android.net.NetworkUtils; 67import android.net.Proxy; 68import android.net.ProxyInfo; 69import android.net.RouteInfo; 70import android.net.UidRange; 71import android.net.Uri; 72import android.os.Binder; 73import android.os.Bundle; 74import android.os.FileUtils; 75import android.os.Handler; 76import android.os.HandlerThread; 77import android.os.IBinder; 78import android.os.INetworkManagementService; 79import android.os.Looper; 80import android.os.Message; 81import android.os.Messenger; 82import android.os.ParcelFileDescriptor; 83import android.os.PowerManager; 84import android.os.Process; 85import android.os.RemoteException; 86import android.os.SystemClock; 87import android.os.SystemProperties; 88import android.os.UserHandle; 89import android.os.UserManager; 90import android.provider.Settings; 91import android.security.Credentials; 92import android.security.KeyStore; 93import android.telephony.TelephonyManager; 94import android.text.TextUtils; 95import android.util.Slog; 96import android.util.SparseArray; 97import android.util.SparseBooleanArray; 98import android.util.SparseIntArray; 99import android.util.Xml; 100 101import com.android.internal.R; 102import com.android.internal.annotations.GuardedBy; 103import com.android.internal.annotations.VisibleForTesting; 104import com.android.internal.app.IBatteryStats; 105import com.android.internal.net.LegacyVpnInfo; 106import com.android.internal.net.NetworkStatsFactory; 107import com.android.internal.net.VpnConfig; 108import com.android.internal.net.VpnInfo; 109import com.android.internal.net.VpnProfile; 110import com.android.internal.telephony.DctConstants; 111import com.android.internal.util.AsyncChannel; 112import com.android.internal.util.IndentingPrintWriter; 113import com.android.internal.util.XmlUtils; 114import com.android.server.am.BatteryStatsService; 115import com.android.server.connectivity.DataConnectionStats; 116import com.android.server.connectivity.NetworkDiagnostics; 117import com.android.server.connectivity.Nat464Xlat; 118import com.android.server.connectivity.NetworkAgentInfo; 119import com.android.server.connectivity.NetworkMonitor; 120import com.android.server.connectivity.PacManager; 121import com.android.server.connectivity.PermissionMonitor; 122import com.android.server.connectivity.Tethering; 123import com.android.server.connectivity.Vpn; 124import com.android.server.net.BaseNetworkObserver; 125import com.android.server.net.LockdownVpnTracker; 126import com.google.android.collect.Lists; 127import com.google.android.collect.Sets; 128 129import org.xmlpull.v1.XmlPullParser; 130import org.xmlpull.v1.XmlPullParserException; 131 132import java.io.File; 133import java.io.FileDescriptor; 134import java.io.FileNotFoundException; 135import java.io.FileReader; 136import java.io.IOException; 137import java.io.PrintWriter; 138import java.net.Inet4Address; 139import java.net.InetAddress; 140import java.net.UnknownHostException; 141import java.util.ArrayList; 142import java.util.Arrays; 143import java.util.Collection; 144import java.util.HashMap; 145import java.util.HashSet; 146import java.util.Iterator; 147import java.util.List; 148import java.util.Map; 149import java.util.Objects; 150import java.util.concurrent.atomic.AtomicInteger; 151 152/** 153 * @hide 154 */ 155public class ConnectivityService extends IConnectivityManager.Stub 156 implements PendingIntent.OnFinished { 157 private static final String TAG = "ConnectivityService"; 158 159 private static final boolean DBG = true; 160 private static final boolean VDBG = false; 161 162 private static final boolean LOGD_RULES = false; 163 164 // TODO: create better separation between radio types and network types 165 166 // how long to wait before switching back to a radio's default network 167 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 168 // system property that can override the above value 169 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 170 "android.telephony.apn-restore"; 171 172 // How long to wait before putting up a "This network doesn't have an Internet connection, 173 // connect anyway?" dialog after the user selects a network that doesn't validate. 174 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 175 176 // How long to delay to removal of a pending intent based request. 177 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 178 private final int mReleasePendingIntentDelayMs; 179 180 private Tethering mTethering; 181 182 private final PermissionMonitor mPermissionMonitor; 183 184 private KeyStore mKeyStore; 185 186 @GuardedBy("mVpns") 187 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 188 189 private boolean mLockdownEnabled; 190 private LockdownVpnTracker mLockdownTracker; 191 192 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 193 private Object mRulesLock = new Object(); 194 /** Currently active network rules by UID. */ 195 private SparseIntArray mUidRules = new SparseIntArray(); 196 /** Set of ifaces that are costly. */ 197 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 198 199 final private Context mContext; 200 private int mNetworkPreference; 201 // 0 is full bad, 100 is full good 202 private int mDefaultInetConditionPublished = 0; 203 204 private int mNumDnsEntries; 205 206 private boolean mTestMode; 207 private static ConnectivityService sServiceInstance; 208 209 private INetworkManagementService mNetd; 210 private INetworkStatsService mStatsService; 211 private INetworkPolicyManager mPolicyManager; 212 213 private String mCurrentTcpBufferSizes; 214 215 private static final int ENABLED = 1; 216 private static final int DISABLED = 0; 217 218 // Arguments to rematchNetworkAndRequests() 219 private enum NascentState { 220 // Indicates a network was just validated for the first time. If the network is found to 221 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 222 JUST_VALIDATED, 223 // Indicates a network was not validated for the first time immediately prior to this call. 224 NOT_JUST_VALIDATED 225 }; 226 private enum ReapUnvalidatedNetworks { 227 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 228 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 229 // known that there may be unvalidated networks that could potentially be reaped, and when 230 // all networks have been rematched against all NetworkRequests. 231 REAP, 232 // Don't reap unvalidated networks. This should be passed when it's known that there are 233 // no unvalidated networks that could potentially be reaped, and when some networks have 234 // not yet been rematched against all NetworkRequests. 235 DONT_REAP 236 }; 237 238 /** 239 * used internally to change our mobile data enabled flag 240 */ 241 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 242 243 /** 244 * used internally to clear a wakelock when transitioning 245 * from one net to another. Clear happens when we get a new 246 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 247 * after a timeout if no network is found (typically 1 min). 248 */ 249 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 250 251 /** 252 * used internally to reload global proxy settings 253 */ 254 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 255 256 /** 257 * used internally to send a sticky broadcast delayed. 258 */ 259 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 260 261 /** 262 * PAC manager has received new port. 263 */ 264 private static final int EVENT_PROXY_HAS_CHANGED = 16; 265 266 /** 267 * used internally when registering NetworkFactories 268 * obj = NetworkFactoryInfo 269 */ 270 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 271 272 /** 273 * used internally when registering NetworkAgents 274 * obj = Messenger 275 */ 276 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 277 278 /** 279 * used to add a network request 280 * includes a NetworkRequestInfo 281 */ 282 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 283 284 /** 285 * indicates a timeout period is over - check if we had a network yet or not 286 * and if not, call the timeout calback (but leave the request live until they 287 * cancel it. 288 * includes a NetworkRequestInfo 289 */ 290 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 291 292 /** 293 * used to add a network listener - no request 294 * includes a NetworkRequestInfo 295 */ 296 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 297 298 /** 299 * used to remove a network request, either a listener or a real request 300 * arg1 = UID of caller 301 * obj = NetworkRequest 302 */ 303 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 304 305 /** 306 * used internally when registering NetworkFactories 307 * obj = Messenger 308 */ 309 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 310 311 /** 312 * used internally to expire a wakelock when transitioning 313 * from one net to another. Expire happens when we fail to find 314 * a new network (typically after 1 minute) - 315 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 316 * a replacement network. 317 */ 318 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 319 320 /** 321 * Used internally to indicate the system is ready. 322 */ 323 private static final int EVENT_SYSTEM_READY = 25; 324 325 /** 326 * used to add a network request with a pending intent 327 * includes a NetworkRequestInfo 328 */ 329 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 330 331 /** 332 * used to remove a pending intent and its associated network request. 333 * arg1 = UID of caller 334 * obj = PendingIntent 335 */ 336 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 337 338 /** 339 * used to specify whether a network should be used even if unvalidated. 340 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 341 * arg2 = whether to remember this choice in the future (1 or 0) 342 * obj = network 343 */ 344 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 345 346 /** 347 * used to ask the user to confirm a connection to an unvalidated network. 348 * obj = network 349 */ 350 private static final int EVENT_PROMPT_UNVALIDATED = 29; 351 352 /** 353 * used internally to (re)configure mobile data always-on settings. 354 */ 355 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 356 357 /** Handler used for internal events. */ 358 final private InternalHandler mHandler; 359 /** Handler used for incoming {@link NetworkStateTracker} events. */ 360 final private NetworkStateTrackerHandler mTrackerHandler; 361 362 private boolean mSystemReady; 363 private Intent mInitialBroadcast; 364 365 private PowerManager.WakeLock mNetTransitionWakeLock; 366 private String mNetTransitionWakeLockCausedBy = ""; 367 private int mNetTransitionWakeLockSerialNumber; 368 private int mNetTransitionWakeLockTimeout; 369 private final PowerManager.WakeLock mPendingIntentWakeLock; 370 371 private InetAddress mDefaultDns; 372 373 // used in DBG mode to track inet condition reports 374 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 375 private ArrayList mInetLog; 376 377 // track the current default http proxy - tell the world if we get a new one (real change) 378 private volatile ProxyInfo mDefaultProxy = null; 379 private Object mProxyLock = new Object(); 380 private boolean mDefaultProxyDisabled = false; 381 382 // track the global proxy. 383 private ProxyInfo mGlobalProxy = null; 384 385 private PacManager mPacManager = null; 386 387 final private SettingsObserver mSettingsObserver; 388 389 private UserManager mUserManager; 390 391 NetworkConfig[] mNetConfigs; 392 int mNetworksDefined; 393 394 // the set of network types that can only be enabled by system/sig apps 395 List mProtectedNetworks; 396 397 private DataConnectionStats mDataConnectionStats; 398 399 TelephonyManager mTelephonyManager; 400 401 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 402 private final static int MIN_NET_ID = 100; // some reserved marks 403 private final static int MAX_NET_ID = 65535; 404 private int mNextNetId = MIN_NET_ID; 405 406 // sequence number of NetworkRequests 407 private int mNextNetworkRequestId = 1; 408 409 /** 410 * Implements support for the legacy "one network per network type" model. 411 * 412 * We used to have a static array of NetworkStateTrackers, one for each 413 * network type, but that doesn't work any more now that we can have, 414 * for example, more that one wifi network. This class stores all the 415 * NetworkAgentInfo objects that support a given type, but the legacy 416 * API will only see the first one. 417 * 418 * It serves two main purposes: 419 * 420 * 1. Provide information about "the network for a given type" (since this 421 * API only supports one). 422 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 423 * the first network for a given type changes, or if the default network 424 * changes. 425 */ 426 private class LegacyTypeTracker { 427 428 private static final boolean DBG = true; 429 private static final boolean VDBG = false; 430 private static final String TAG = "CSLegacyTypeTracker"; 431 432 /** 433 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 434 * Each list holds references to all NetworkAgentInfos that are used to 435 * satisfy requests for that network type. 436 * 437 * This array is built out at startup such that an unsupported network 438 * doesn't get an ArrayList instance, making this a tristate: 439 * unsupported, supported but not active and active. 440 * 441 * The actual lists are populated when we scan the network types that 442 * are supported on this device. 443 */ 444 private ArrayList<NetworkAgentInfo> mTypeLists[]; 445 446 public LegacyTypeTracker() { 447 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 448 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 449 } 450 451 public void addSupportedType(int type) { 452 if (mTypeLists[type] != null) { 453 throw new IllegalStateException( 454 "legacy list for type " + type + "already initialized"); 455 } 456 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 457 } 458 459 public boolean isTypeSupported(int type) { 460 return isNetworkTypeValid(type) && mTypeLists[type] != null; 461 } 462 463 public NetworkAgentInfo getNetworkForType(int type) { 464 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 465 return mTypeLists[type].get(0); 466 } else { 467 return null; 468 } 469 } 470 471 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 472 boolean isDefaultNetwork) { 473 if (DBG) { 474 log("Sending " + (connected ? "connected" : "disconnected") + 475 " broadcast for type " + type + " " + nai.name() + 476 " isDefaultNetwork=" + isDefaultNetwork); 477 } 478 } 479 480 /** Adds the given network to the specified legacy type list. */ 481 public void add(int type, NetworkAgentInfo nai) { 482 if (!isTypeSupported(type)) { 483 return; // Invalid network type. 484 } 485 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 486 487 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 488 if (list.contains(nai)) { 489 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 490 return; 491 } 492 493 list.add(nai); 494 495 // Send a broadcast if this is the first network of its type or if it's the default. 496 final boolean isDefaultNetwork = isDefaultNetwork(nai); 497 if (list.size() == 1 || isDefaultNetwork) { 498 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 499 sendLegacyNetworkBroadcast(nai, true, type); 500 } 501 } 502 503 /** Removes the given network from the specified legacy type list. */ 504 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 505 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 506 if (list == null || list.isEmpty()) { 507 return; 508 } 509 510 final boolean wasFirstNetwork = list.get(0).equals(nai); 511 512 if (!list.remove(nai)) { 513 return; 514 } 515 516 if (wasFirstNetwork || wasDefault) { 517 maybeLogBroadcast(nai, false, type, wasDefault); 518 sendLegacyNetworkBroadcast(nai, false, type); 519 } 520 521 if (!list.isEmpty() && wasFirstNetwork) { 522 if (DBG) log("Other network available for type " + type + 523 ", sending connected broadcast"); 524 final NetworkAgentInfo replacement = list.get(0); 525 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 526 sendLegacyNetworkBroadcast(replacement, false, type); 527 } 528 } 529 530 /** Removes the given network from all legacy type lists. */ 531 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 532 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 533 for (int type = 0; type < mTypeLists.length; type++) { 534 remove(type, nai, wasDefault); 535 } 536 } 537 538 private String naiToString(NetworkAgentInfo nai) { 539 String name = (nai != null) ? nai.name() : "null"; 540 String state = (nai.networkInfo != null) ? 541 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 542 "???/???"; 543 return name + " " + state; 544 } 545 546 public void dump(IndentingPrintWriter pw) { 547 pw.println("mLegacyTypeTracker:"); 548 pw.increaseIndent(); 549 pw.print("Supported types:"); 550 for (int type = 0; type < mTypeLists.length; type++) { 551 if (mTypeLists[type] != null) pw.print(" " + type); 552 } 553 pw.println(); 554 pw.println("Current state:"); 555 pw.increaseIndent(); 556 for (int type = 0; type < mTypeLists.length; type++) { 557 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 558 for (NetworkAgentInfo nai : mTypeLists[type]) { 559 pw.println(type + " " + naiToString(nai)); 560 } 561 } 562 pw.decreaseIndent(); 563 pw.decreaseIndent(); 564 pw.println(); 565 } 566 567 // This class needs its own log method because it has a different TAG. 568 private void log(String s) { 569 Slog.d(TAG, s); 570 } 571 572 } 573 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 574 575 public ConnectivityService(Context context, INetworkManagementService netManager, 576 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 577 if (DBG) log("ConnectivityService starting up"); 578 579 mDefaultRequest = createInternetRequestForTransport(-1); 580 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 581 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 582 583 mDefaultMobileDataRequest = createInternetRequestForTransport( 584 NetworkCapabilities.TRANSPORT_CELLULAR); 585 586 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 587 handlerThread.start(); 588 mHandler = new InternalHandler(handlerThread.getLooper()); 589 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 590 591 // setup our unique device name 592 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 593 String id = Settings.Secure.getString(context.getContentResolver(), 594 Settings.Secure.ANDROID_ID); 595 if (id != null && id.length() > 0) { 596 String name = new String("android-").concat(id); 597 SystemProperties.set("net.hostname", name); 598 } 599 } 600 601 // read our default dns server ip 602 String dns = Settings.Global.getString(context.getContentResolver(), 603 Settings.Global.DEFAULT_DNS_SERVER); 604 if (dns == null || dns.length() == 0) { 605 dns = context.getResources().getString( 606 com.android.internal.R.string.config_default_dns_server); 607 } 608 try { 609 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 610 } catch (IllegalArgumentException e) { 611 loge("Error setting defaultDns using " + dns); 612 } 613 614 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 615 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 616 617 mContext = checkNotNull(context, "missing Context"); 618 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 619 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 620 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 621 mKeyStore = KeyStore.getInstance(); 622 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 623 624 try { 625 mPolicyManager.registerListener(mPolicyListener); 626 } catch (RemoteException e) { 627 // ouch, no rules updates means some processes may never get network 628 loge("unable to register INetworkPolicyListener" + e.toString()); 629 } 630 631 final PowerManager powerManager = (PowerManager) context.getSystemService( 632 Context.POWER_SERVICE); 633 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 634 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 635 com.android.internal.R.integer.config_networkTransitionTimeout); 636 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 637 638 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 639 640 // TODO: What is the "correct" way to do determine if this is a wifi only device? 641 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 642 log("wifiOnly=" + wifiOnly); 643 String[] naStrings = context.getResources().getStringArray( 644 com.android.internal.R.array.networkAttributes); 645 for (String naString : naStrings) { 646 try { 647 NetworkConfig n = new NetworkConfig(naString); 648 if (VDBG) log("naString=" + naString + " config=" + n); 649 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 650 loge("Error in networkAttributes - ignoring attempt to define type " + 651 n.type); 652 continue; 653 } 654 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 655 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 656 n.type); 657 continue; 658 } 659 if (mNetConfigs[n.type] != null) { 660 loge("Error in networkAttributes - ignoring attempt to redefine type " + 661 n.type); 662 continue; 663 } 664 mLegacyTypeTracker.addSupportedType(n.type); 665 666 mNetConfigs[n.type] = n; 667 mNetworksDefined++; 668 } catch(Exception e) { 669 // ignore it - leave the entry null 670 } 671 } 672 673 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 674 if (mNetConfigs[TYPE_VPN] == null) { 675 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 676 // don't need to add TYPE_VPN to mNetConfigs. 677 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 678 mNetworksDefined++; // used only in the log() statement below. 679 } 680 681 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 682 683 mProtectedNetworks = new ArrayList<Integer>(); 684 int[] protectedNetworks = context.getResources().getIntArray( 685 com.android.internal.R.array.config_protectedNetworks); 686 for (int p : protectedNetworks) { 687 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 688 mProtectedNetworks.add(p); 689 } else { 690 if (DBG) loge("Ignoring protectedNetwork " + p); 691 } 692 } 693 694 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 695 && SystemProperties.get("ro.build.type").equals("eng"); 696 697 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 698 699 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 700 701 //set up the listener for user state for creating user VPNs 702 IntentFilter intentFilter = new IntentFilter(); 703 intentFilter.addAction(Intent.ACTION_USER_STARTING); 704 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 705 mContext.registerReceiverAsUser( 706 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 707 708 try { 709 mNetd.registerObserver(mTethering); 710 mNetd.registerObserver(mDataActivityObserver); 711 } catch (RemoteException e) { 712 loge("Error registering observer :" + e); 713 } 714 715 if (DBG) { 716 mInetLog = new ArrayList(); 717 } 718 719 mSettingsObserver = new SettingsObserver(mContext, mHandler); 720 registerSettingsCallbacks(); 721 722 mDataConnectionStats = new DataConnectionStats(mContext); 723 mDataConnectionStats.startMonitoring(); 724 725 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 726 727 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 728 } 729 730 private NetworkRequest createInternetRequestForTransport(int transportType) { 731 NetworkCapabilities netCap = new NetworkCapabilities(); 732 netCap.addCapability(NET_CAPABILITY_INTERNET); 733 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 734 if (transportType > -1) { 735 netCap.addTransportType(transportType); 736 } 737 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 738 } 739 740 private void handleMobileDataAlwaysOn() { 741 final boolean enable = (Settings.Global.getInt( 742 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 743 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 744 if (enable == isEnabled) { 745 return; // Nothing to do. 746 } 747 748 if (enable) { 749 handleRegisterNetworkRequest(new NetworkRequestInfo( 750 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 751 } else { 752 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 753 } 754 } 755 756 private void registerSettingsCallbacks() { 757 // Watch for global HTTP proxy changes. 758 mSettingsObserver.observe( 759 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 760 EVENT_APPLY_GLOBAL_HTTP_PROXY); 761 762 // Watch for whether or not to keep mobile data always on. 763 mSettingsObserver.observe( 764 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 765 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 766 } 767 768 private synchronized int nextNetworkRequestId() { 769 return mNextNetworkRequestId++; 770 } 771 772 @VisibleForTesting 773 protected int reserveNetId() { 774 synchronized (mNetworkForNetId) { 775 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 776 int netId = mNextNetId; 777 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 778 // Make sure NetID unused. http://b/16815182 779 if (!mNetIdInUse.get(netId)) { 780 mNetIdInUse.put(netId, true); 781 return netId; 782 } 783 } 784 } 785 throw new IllegalStateException("No free netIds"); 786 } 787 788 private NetworkState getFilteredNetworkState(int networkType, int uid) { 789 NetworkInfo info = null; 790 LinkProperties lp = null; 791 NetworkCapabilities nc = null; 792 Network network = null; 793 String subscriberId = null; 794 795 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 796 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 797 if (nai != null) { 798 synchronized (nai) { 799 info = new NetworkInfo(nai.networkInfo); 800 lp = new LinkProperties(nai.linkProperties); 801 nc = new NetworkCapabilities(nai.networkCapabilities); 802 // Network objects are outwardly immutable so there is no point to duplicating. 803 // Duplicating also precludes sharing socket factories and connection pools. 804 network = nai.network; 805 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 806 } 807 info.setType(networkType); 808 } else { 809 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 810 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 811 info.setIsAvailable(true); 812 lp = new LinkProperties(); 813 nc = new NetworkCapabilities(); 814 network = null; 815 } 816 info = getFilteredNetworkInfo(info, lp, uid); 817 } 818 819 return new NetworkState(info, lp, nc, network, subscriberId, null); 820 } 821 822 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 823 if (network == null) { 824 return null; 825 } 826 synchronized (mNetworkForNetId) { 827 return mNetworkForNetId.get(network.netId); 828 } 829 }; 830 831 private Network[] getVpnUnderlyingNetworks(int uid) { 832 if (!mLockdownEnabled) { 833 int user = UserHandle.getUserId(uid); 834 synchronized (mVpns) { 835 Vpn vpn = mVpns.get(user); 836 if (vpn != null && vpn.appliesToUid(uid)) { 837 return vpn.getUnderlyingNetworks(); 838 } 839 } 840 } 841 return null; 842 } 843 844 private NetworkState getUnfilteredActiveNetworkState(int uid) { 845 NetworkInfo info = null; 846 LinkProperties lp = null; 847 NetworkCapabilities nc = null; 848 Network network = null; 849 String subscriberId = null; 850 851 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 852 853 final Network[] networks = getVpnUnderlyingNetworks(uid); 854 if (networks != null) { 855 // getUnderlyingNetworks() returns: 856 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 857 // empty array => the VPN explicitly said "no default network". 858 // non-empty array => the VPN specified one or more default networks; we use the 859 // first one. 860 if (networks.length > 0) { 861 nai = getNetworkAgentInfoForNetwork(networks[0]); 862 } else { 863 nai = null; 864 } 865 } 866 867 if (nai != null) { 868 synchronized (nai) { 869 info = new NetworkInfo(nai.networkInfo); 870 lp = new LinkProperties(nai.linkProperties); 871 nc = new NetworkCapabilities(nai.networkCapabilities); 872 // Network objects are outwardly immutable so there is no point to duplicating. 873 // Duplicating also precludes sharing socket factories and connection pools. 874 network = nai.network; 875 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 876 } 877 } 878 879 return new NetworkState(info, lp, nc, network, subscriberId, null); 880 } 881 882 /** 883 * Check if UID should be blocked from using the network with the given LinkProperties. 884 */ 885 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 886 final boolean networkCostly; 887 final int uidRules; 888 889 final String iface = (lp == null ? "" : lp.getInterfaceName()); 890 synchronized (mRulesLock) { 891 networkCostly = mMeteredIfaces.contains(iface); 892 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 893 } 894 895 if ((uidRules & RULE_REJECT_ALL) != 0 896 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 897 return true; 898 } 899 900 // no restrictive rules; network is visible 901 return false; 902 } 903 904 /** 905 * Return a filtered {@link NetworkInfo}, potentially marked 906 * {@link DetailedState#BLOCKED} based on 907 * {@link #isNetworkWithLinkPropertiesBlocked}. 908 */ 909 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 910 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 911 // network is blocked; clone and override state 912 info = new NetworkInfo(info); 913 info.setDetailedState(DetailedState.BLOCKED, null, null); 914 if (VDBG) { 915 log("returning Blocked NetworkInfo for ifname=" + 916 lp.getInterfaceName() + ", uid=" + uid); 917 } 918 } 919 if (info != null && mLockdownTracker != null) { 920 info = mLockdownTracker.augmentNetworkInfo(info); 921 if (VDBG) log("returning Locked NetworkInfo"); 922 } 923 return info; 924 } 925 926 /** 927 * Return NetworkInfo for the active (i.e., connected) network interface. 928 * It is assumed that at most one network is active at a time. If more 929 * than one is active, it is indeterminate which will be returned. 930 * @return the info for the active network, or {@code null} if none is 931 * active 932 */ 933 @Override 934 public NetworkInfo getActiveNetworkInfo() { 935 enforceAccessPermission(); 936 final int uid = Binder.getCallingUid(); 937 NetworkState state = getUnfilteredActiveNetworkState(uid); 938 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 939 } 940 941 @Override 942 public Network getActiveNetwork() { 943 enforceAccessPermission(); 944 final int uid = Binder.getCallingUid(); 945 final int user = UserHandle.getUserId(uid); 946 int vpnNetId = NETID_UNSET; 947 synchronized (mVpns) { 948 final Vpn vpn = mVpns.get(user); 949 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 950 } 951 NetworkAgentInfo nai; 952 if (vpnNetId != NETID_UNSET) { 953 synchronized (mNetworkForNetId) { 954 nai = mNetworkForNetId.get(vpnNetId); 955 } 956 if (nai != null) return nai.network; 957 } 958 nai = getDefaultNetwork(); 959 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 960 return nai != null ? nai.network : null; 961 } 962 963 /** 964 * Find the first Provisioning network. 965 * 966 * @return NetworkInfo or null if none. 967 */ 968 private NetworkInfo getProvisioningNetworkInfo() { 969 enforceAccessPermission(); 970 971 // Find the first Provisioning Network 972 NetworkInfo provNi = null; 973 for (NetworkInfo ni : getAllNetworkInfo()) { 974 if (ni.isConnectedToProvisioningNetwork()) { 975 provNi = ni; 976 break; 977 } 978 } 979 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 980 return provNi; 981 } 982 983 /** 984 * Find the first Provisioning network or the ActiveDefaultNetwork 985 * if there is no Provisioning network 986 * 987 * @return NetworkInfo or null if none. 988 */ 989 @Override 990 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 991 enforceAccessPermission(); 992 993 NetworkInfo provNi = getProvisioningNetworkInfo(); 994 if (provNi == null) { 995 provNi = getActiveNetworkInfo(); 996 } 997 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 998 return provNi; 999 } 1000 1001 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1002 enforceAccessPermission(); 1003 final int uid = Binder.getCallingUid(); 1004 NetworkState state = getUnfilteredActiveNetworkState(uid); 1005 return state.networkInfo; 1006 } 1007 1008 @Override 1009 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1010 enforceConnectivityInternalPermission(); 1011 NetworkState state = getUnfilteredActiveNetworkState(uid); 1012 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1013 } 1014 1015 @Override 1016 public NetworkInfo getNetworkInfo(int networkType) { 1017 enforceAccessPermission(); 1018 final int uid = Binder.getCallingUid(); 1019 if (getVpnUnderlyingNetworks(uid) != null) { 1020 // A VPN is active, so we may need to return one of its underlying networks. This 1021 // information is not available in LegacyTypeTracker, so we have to get it from 1022 // getUnfilteredActiveNetworkState. 1023 NetworkState state = getUnfilteredActiveNetworkState(uid); 1024 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1025 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1026 } 1027 } 1028 NetworkState state = getFilteredNetworkState(networkType, uid); 1029 return state.networkInfo; 1030 } 1031 1032 @Override 1033 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1034 enforceAccessPermission(); 1035 final int uid = Binder.getCallingUid(); 1036 NetworkInfo info = null; 1037 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1038 if (nai != null) { 1039 synchronized (nai) { 1040 info = new NetworkInfo(nai.networkInfo); 1041 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1042 } 1043 } 1044 return info; 1045 } 1046 1047 @Override 1048 public NetworkInfo[] getAllNetworkInfo() { 1049 enforceAccessPermission(); 1050 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1051 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1052 networkType++) { 1053 NetworkInfo info = getNetworkInfo(networkType); 1054 if (info != null) { 1055 result.add(info); 1056 } 1057 } 1058 return result.toArray(new NetworkInfo[result.size()]); 1059 } 1060 1061 @Override 1062 public Network getNetworkForType(int networkType) { 1063 enforceAccessPermission(); 1064 final int uid = Binder.getCallingUid(); 1065 NetworkState state = getFilteredNetworkState(networkType, uid); 1066 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1067 return state.network; 1068 } 1069 return null; 1070 } 1071 1072 @Override 1073 public Network[] getAllNetworks() { 1074 enforceAccessPermission(); 1075 synchronized (mNetworkForNetId) { 1076 final Network[] result = new Network[mNetworkForNetId.size()]; 1077 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1078 result[i] = mNetworkForNetId.valueAt(i).network; 1079 } 1080 return result; 1081 } 1082 } 1083 1084 @Override 1085 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1086 // The basic principle is: if an app's traffic could possibly go over a 1087 // network, without the app doing anything multinetwork-specific, 1088 // (hence, by "default"), then include that network's capabilities in 1089 // the array. 1090 // 1091 // In the normal case, app traffic only goes over the system's default 1092 // network connection, so that's the only network returned. 1093 // 1094 // With a VPN in force, some app traffic may go into the VPN, and thus 1095 // over whatever underlying networks the VPN specifies, while other app 1096 // traffic may go over the system default network (e.g.: a split-tunnel 1097 // VPN, or an app disallowed by the VPN), so the set of networks 1098 // returned includes the VPN's underlying networks and the system 1099 // default. 1100 enforceAccessPermission(); 1101 1102 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1103 1104 NetworkAgentInfo nai = getDefaultNetwork(); 1105 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1106 if (nc != null) { 1107 result.put(nai.network, nc); 1108 } 1109 1110 if (!mLockdownEnabled) { 1111 synchronized (mVpns) { 1112 Vpn vpn = mVpns.get(userId); 1113 if (vpn != null) { 1114 Network[] networks = vpn.getUnderlyingNetworks(); 1115 if (networks != null) { 1116 for (Network network : networks) { 1117 nai = getNetworkAgentInfoForNetwork(network); 1118 nc = getNetworkCapabilitiesInternal(nai); 1119 if (nc != null) { 1120 result.put(network, nc); 1121 } 1122 } 1123 } 1124 } 1125 } 1126 } 1127 1128 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1129 out = result.values().toArray(out); 1130 return out; 1131 } 1132 1133 @Override 1134 public boolean isNetworkSupported(int networkType) { 1135 enforceAccessPermission(); 1136 return mLegacyTypeTracker.isTypeSupported(networkType); 1137 } 1138 1139 /** 1140 * Return LinkProperties for the active (i.e., connected) default 1141 * network interface. It is assumed that at most one default network 1142 * is active at a time. If more than one is active, it is indeterminate 1143 * which will be returned. 1144 * @return the ip properties for the active network, or {@code null} if 1145 * none is active 1146 */ 1147 @Override 1148 public LinkProperties getActiveLinkProperties() { 1149 enforceAccessPermission(); 1150 final int uid = Binder.getCallingUid(); 1151 NetworkState state = getUnfilteredActiveNetworkState(uid); 1152 return state.linkProperties; 1153 } 1154 1155 @Override 1156 public LinkProperties getLinkPropertiesForType(int networkType) { 1157 enforceAccessPermission(); 1158 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1159 if (nai != null) { 1160 synchronized (nai) { 1161 return new LinkProperties(nai.linkProperties); 1162 } 1163 } 1164 return null; 1165 } 1166 1167 // TODO - this should be ALL networks 1168 @Override 1169 public LinkProperties getLinkProperties(Network network) { 1170 enforceAccessPermission(); 1171 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1172 if (nai != null) { 1173 synchronized (nai) { 1174 return new LinkProperties(nai.linkProperties); 1175 } 1176 } 1177 return null; 1178 } 1179 1180 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1181 if (nai != null) { 1182 synchronized (nai) { 1183 if (nai.networkCapabilities != null) { 1184 return new NetworkCapabilities(nai.networkCapabilities); 1185 } 1186 } 1187 } 1188 return null; 1189 } 1190 1191 @Override 1192 public NetworkCapabilities getNetworkCapabilities(Network network) { 1193 enforceAccessPermission(); 1194 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1195 } 1196 1197 @Override 1198 public NetworkState[] getAllNetworkState() { 1199 // Require internal since we're handing out IMSI details 1200 enforceConnectivityInternalPermission(); 1201 1202 final ArrayList<NetworkState> result = Lists.newArrayList(); 1203 for (Network network : getAllNetworks()) { 1204 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1205 if (nai != null) { 1206 synchronized (nai) { 1207 final String subscriberId = (nai.networkMisc != null) 1208 ? nai.networkMisc.subscriberId : null; 1209 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1210 nai.networkCapabilities, network, subscriberId, null)); 1211 } 1212 } 1213 } 1214 return result.toArray(new NetworkState[result.size()]); 1215 } 1216 1217 @Override 1218 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1219 enforceAccessPermission(); 1220 final int uid = Binder.getCallingUid(); 1221 final long token = Binder.clearCallingIdentity(); 1222 try { 1223 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1224 if (state.networkInfo != null) { 1225 try { 1226 return mPolicyManager.getNetworkQuotaInfo(state); 1227 } catch (RemoteException e) { 1228 } 1229 } 1230 return null; 1231 } finally { 1232 Binder.restoreCallingIdentity(token); 1233 } 1234 } 1235 1236 @Override 1237 public boolean isActiveNetworkMetered() { 1238 enforceAccessPermission(); 1239 final int uid = Binder.getCallingUid(); 1240 final long token = Binder.clearCallingIdentity(); 1241 try { 1242 return isActiveNetworkMeteredUnchecked(uid); 1243 } finally { 1244 Binder.restoreCallingIdentity(token); 1245 } 1246 } 1247 1248 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1249 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1250 if (state.networkInfo != null) { 1251 try { 1252 return mPolicyManager.isNetworkMetered(state); 1253 } catch (RemoteException e) { 1254 } 1255 } 1256 return false; 1257 } 1258 1259 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1260 @Override 1261 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1262 int deviceType = Integer.parseInt(label); 1263 sendDataActivityBroadcast(deviceType, active, tsNanos); 1264 } 1265 }; 1266 1267 /** 1268 * Ensure that a network route exists to deliver traffic to the specified 1269 * host via the specified network interface. 1270 * @param networkType the type of the network over which traffic to the 1271 * specified host is to be routed 1272 * @param hostAddress the IP address of the host to which the route is 1273 * desired 1274 * @return {@code true} on success, {@code false} on failure 1275 */ 1276 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1277 enforceChangePermission(); 1278 if (mProtectedNetworks.contains(networkType)) { 1279 enforceConnectivityInternalPermission(); 1280 } 1281 1282 InetAddress addr; 1283 try { 1284 addr = InetAddress.getByAddress(hostAddress); 1285 } catch (UnknownHostException e) { 1286 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1287 return false; 1288 } 1289 1290 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1291 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1292 return false; 1293 } 1294 1295 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1296 if (nai == null) { 1297 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1298 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1299 } else { 1300 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1301 } 1302 return false; 1303 } 1304 1305 DetailedState netState; 1306 synchronized (nai) { 1307 netState = nai.networkInfo.getDetailedState(); 1308 } 1309 1310 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1311 if (VDBG) { 1312 log("requestRouteToHostAddress on down network " 1313 + "(" + networkType + ") - dropped" 1314 + " netState=" + netState); 1315 } 1316 return false; 1317 } 1318 1319 final int uid = Binder.getCallingUid(); 1320 final long token = Binder.clearCallingIdentity(); 1321 try { 1322 LinkProperties lp; 1323 int netId; 1324 synchronized (nai) { 1325 lp = nai.linkProperties; 1326 netId = nai.network.netId; 1327 } 1328 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1329 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1330 return ok; 1331 } finally { 1332 Binder.restoreCallingIdentity(token); 1333 } 1334 } 1335 1336 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1337 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1338 if (bestRoute == null) { 1339 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1340 } else { 1341 String iface = bestRoute.getInterface(); 1342 if (bestRoute.getGateway().equals(addr)) { 1343 // if there is no better route, add the implied hostroute for our gateway 1344 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1345 } else { 1346 // if we will connect to this through another route, add a direct route 1347 // to it's gateway 1348 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1349 } 1350 } 1351 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1352 try { 1353 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1354 } catch (Exception e) { 1355 // never crash - catch them all 1356 if (DBG) loge("Exception trying to add a route: " + e); 1357 return false; 1358 } 1359 return true; 1360 } 1361 1362 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1363 @Override 1364 public void onUidRulesChanged(int uid, int uidRules) { 1365 // caller is NPMS, since we only register with them 1366 if (LOGD_RULES) { 1367 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1368 } 1369 1370 synchronized (mRulesLock) { 1371 // skip update when we've already applied rules 1372 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1373 if (oldRules == uidRules) return; 1374 1375 mUidRules.put(uid, uidRules); 1376 } 1377 1378 // TODO: notify UID when it has requested targeted updates 1379 } 1380 1381 @Override 1382 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1383 // caller is NPMS, since we only register with them 1384 if (LOGD_RULES) { 1385 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1386 } 1387 1388 synchronized (mRulesLock) { 1389 mMeteredIfaces.clear(); 1390 for (String iface : meteredIfaces) { 1391 mMeteredIfaces.add(iface); 1392 } 1393 } 1394 } 1395 1396 @Override 1397 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1398 // caller is NPMS, since we only register with them 1399 if (LOGD_RULES) { 1400 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1401 } 1402 } 1403 }; 1404 1405 /** 1406 * Require that the caller is either in the same user or has appropriate permission to interact 1407 * across users. 1408 * 1409 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1410 */ 1411 private void enforceCrossUserPermission(int userId) { 1412 if (userId == UserHandle.getCallingUserId()) { 1413 // Not a cross-user call. 1414 return; 1415 } 1416 mContext.enforceCallingOrSelfPermission( 1417 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1418 "ConnectivityService"); 1419 } 1420 1421 private void enforceInternetPermission() { 1422 mContext.enforceCallingOrSelfPermission( 1423 android.Manifest.permission.INTERNET, 1424 "ConnectivityService"); 1425 } 1426 1427 private void enforceAccessPermission() { 1428 mContext.enforceCallingOrSelfPermission( 1429 android.Manifest.permission.ACCESS_NETWORK_STATE, 1430 "ConnectivityService"); 1431 } 1432 1433 private void enforceChangePermission() { 1434 mContext.enforceCallingOrSelfPermission( 1435 android.Manifest.permission.CHANGE_NETWORK_STATE, 1436 "ConnectivityService"); 1437 } 1438 1439 private void enforceTetherAccessPermission() { 1440 mContext.enforceCallingOrSelfPermission( 1441 android.Manifest.permission.ACCESS_NETWORK_STATE, 1442 "ConnectivityService"); 1443 } 1444 1445 private void enforceConnectivityInternalPermission() { 1446 mContext.enforceCallingOrSelfPermission( 1447 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1448 "ConnectivityService"); 1449 } 1450 1451 public void sendConnectedBroadcast(NetworkInfo info) { 1452 enforceConnectivityInternalPermission(); 1453 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1454 } 1455 1456 private void sendInetConditionBroadcast(NetworkInfo info) { 1457 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1458 } 1459 1460 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1461 if (mLockdownTracker != null) { 1462 info = mLockdownTracker.augmentNetworkInfo(info); 1463 } 1464 1465 Intent intent = new Intent(bcastType); 1466 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1467 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1468 if (info.isFailover()) { 1469 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1470 info.setFailover(false); 1471 } 1472 if (info.getReason() != null) { 1473 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1474 } 1475 if (info.getExtraInfo() != null) { 1476 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1477 info.getExtraInfo()); 1478 } 1479 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1480 return intent; 1481 } 1482 1483 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1484 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1485 } 1486 1487 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1488 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1489 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1490 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1491 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1492 final long ident = Binder.clearCallingIdentity(); 1493 try { 1494 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1495 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1496 } finally { 1497 Binder.restoreCallingIdentity(ident); 1498 } 1499 } 1500 1501 private void sendStickyBroadcast(Intent intent) { 1502 synchronized(this) { 1503 if (!mSystemReady) { 1504 mInitialBroadcast = new Intent(intent); 1505 } 1506 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1507 if (DBG) { 1508 log("sendStickyBroadcast: action=" + intent.getAction()); 1509 } 1510 1511 final long ident = Binder.clearCallingIdentity(); 1512 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1513 final IBatteryStats bs = BatteryStatsService.getService(); 1514 try { 1515 NetworkInfo ni = intent.getParcelableExtra( 1516 ConnectivityManager.EXTRA_NETWORK_INFO); 1517 bs.noteConnectivityChanged(intent.getIntExtra( 1518 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1519 ni != null ? ni.getState().toString() : "?"); 1520 } catch (RemoteException e) { 1521 } 1522 } 1523 try { 1524 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1525 } finally { 1526 Binder.restoreCallingIdentity(ident); 1527 } 1528 } 1529 } 1530 1531 void systemReady() { 1532 loadGlobalProxy(); 1533 1534 synchronized(this) { 1535 mSystemReady = true; 1536 if (mInitialBroadcast != null) { 1537 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1538 mInitialBroadcast = null; 1539 } 1540 } 1541 // load the global proxy at startup 1542 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1543 1544 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1545 // for user to unlock device. 1546 if (!updateLockdownVpn()) { 1547 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1548 mContext.registerReceiver(mUserPresentReceiver, filter); 1549 } 1550 1551 // Configure whether mobile data is always on. 1552 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1553 1554 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1555 1556 mPermissionMonitor.startMonitoring(); 1557 } 1558 1559 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1560 @Override 1561 public void onReceive(Context context, Intent intent) { 1562 // Try creating lockdown tracker, since user present usually means 1563 // unlocked keystore. 1564 if (updateLockdownVpn()) { 1565 mContext.unregisterReceiver(this); 1566 } 1567 } 1568 }; 1569 1570 /** @hide */ 1571 @Override 1572 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1573 enforceConnectivityInternalPermission(); 1574 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1575// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1576 } 1577 1578 /** 1579 * Setup data activity tracking for the given network. 1580 * 1581 * Every {@code setupDataActivityTracking} should be paired with a 1582 * {@link #removeDataActivityTracking} for cleanup. 1583 */ 1584 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1585 final String iface = networkAgent.linkProperties.getInterfaceName(); 1586 1587 final int timeout; 1588 int type = ConnectivityManager.TYPE_NONE; 1589 1590 if (networkAgent.networkCapabilities.hasTransport( 1591 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1592 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1593 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1594 5); 1595 type = ConnectivityManager.TYPE_MOBILE; 1596 } else if (networkAgent.networkCapabilities.hasTransport( 1597 NetworkCapabilities.TRANSPORT_WIFI)) { 1598 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1599 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1600 5); 1601 type = ConnectivityManager.TYPE_WIFI; 1602 } else { 1603 // do not track any other networks 1604 timeout = 0; 1605 } 1606 1607 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1608 try { 1609 mNetd.addIdleTimer(iface, timeout, type); 1610 } catch (Exception e) { 1611 // You shall not crash! 1612 loge("Exception in setupDataActivityTracking " + e); 1613 } 1614 } 1615 } 1616 1617 /** 1618 * Remove data activity tracking when network disconnects. 1619 */ 1620 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1621 final String iface = networkAgent.linkProperties.getInterfaceName(); 1622 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1623 1624 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1625 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1626 try { 1627 // the call fails silently if no idletimer setup for this interface 1628 mNetd.removeIdleTimer(iface); 1629 } catch (Exception e) { 1630 loge("Exception in removeDataActivityTracking " + e); 1631 } 1632 } 1633 } 1634 1635 /** 1636 * Reads the network specific MTU size from reources. 1637 * and set it on it's iface. 1638 */ 1639 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1640 final String iface = newLp.getInterfaceName(); 1641 final int mtu = newLp.getMtu(); 1642 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1643 if (VDBG) log("identical MTU - not setting"); 1644 return; 1645 } 1646 1647 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1648 loge("Unexpected mtu value: " + mtu + ", " + iface); 1649 return; 1650 } 1651 1652 // Cannot set MTU without interface name 1653 if (TextUtils.isEmpty(iface)) { 1654 loge("Setting MTU size with null iface."); 1655 return; 1656 } 1657 1658 try { 1659 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1660 mNetd.setMtu(iface, mtu); 1661 } catch (Exception e) { 1662 Slog.e(TAG, "exception in setMtu()" + e); 1663 } 1664 } 1665 1666 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1667 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1668 1669 // Overridden for testing purposes to avoid writing to SystemProperties. 1670 @VisibleForTesting 1671 protected int getDefaultTcpRwnd() { 1672 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1673 } 1674 1675 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1676 if (isDefaultNetwork(nai) == false) { 1677 return; 1678 } 1679 1680 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1681 String[] values = null; 1682 if (tcpBufferSizes != null) { 1683 values = tcpBufferSizes.split(","); 1684 } 1685 1686 if (values == null || values.length != 6) { 1687 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1688 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1689 values = tcpBufferSizes.split(","); 1690 } 1691 1692 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1693 1694 try { 1695 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1696 1697 final String prefix = "/sys/kernel/ipv4/tcp_"; 1698 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1699 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1700 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1701 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1702 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1703 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1704 mCurrentTcpBufferSizes = tcpBufferSizes; 1705 } catch (IOException e) { 1706 loge("Can't set TCP buffer sizes:" + e); 1707 } 1708 1709 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1710 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1711 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1712 if (rwndValue != 0) { 1713 SystemProperties.set(sysctlKey, rwndValue.toString()); 1714 } 1715 } 1716 1717 private void flushVmDnsCache() { 1718 /* 1719 * Tell the VMs to toss their DNS caches 1720 */ 1721 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1722 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1723 /* 1724 * Connectivity events can happen before boot has completed ... 1725 */ 1726 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1727 final long ident = Binder.clearCallingIdentity(); 1728 try { 1729 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1730 } finally { 1731 Binder.restoreCallingIdentity(ident); 1732 } 1733 } 1734 1735 @Override 1736 public int getRestoreDefaultNetworkDelay(int networkType) { 1737 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1738 NETWORK_RESTORE_DELAY_PROP_NAME); 1739 if(restoreDefaultNetworkDelayStr != null && 1740 restoreDefaultNetworkDelayStr.length() != 0) { 1741 try { 1742 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1743 } catch (NumberFormatException e) { 1744 } 1745 } 1746 // if the system property isn't set, use the value for the apn type 1747 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1748 1749 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1750 (mNetConfigs[networkType] != null)) { 1751 ret = mNetConfigs[networkType].restoreTime; 1752 } 1753 return ret; 1754 } 1755 1756 private boolean shouldPerformDiagnostics(String[] args) { 1757 for (String arg : args) { 1758 if (arg.equals("--diag")) { 1759 return true; 1760 } 1761 } 1762 return false; 1763 } 1764 1765 @Override 1766 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1767 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1768 if (mContext.checkCallingOrSelfPermission( 1769 android.Manifest.permission.DUMP) 1770 != PackageManager.PERMISSION_GRANTED) { 1771 pw.println("Permission Denial: can't dump ConnectivityService " + 1772 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1773 Binder.getCallingUid()); 1774 return; 1775 } 1776 1777 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1778 if (shouldPerformDiagnostics(args)) { 1779 final long DIAG_TIME_MS = 5000; 1780 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1781 // Start gathering diagnostic information. 1782 netDiags.add(new NetworkDiagnostics( 1783 nai.network, 1784 new LinkProperties(nai.linkProperties), 1785 DIAG_TIME_MS)); 1786 } 1787 1788 for (NetworkDiagnostics netDiag : netDiags) { 1789 pw.println(); 1790 netDiag.waitForMeasurements(); 1791 netDiag.dump(pw); 1792 } 1793 1794 return; 1795 } 1796 1797 pw.print("NetworkFactories for:"); 1798 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1799 pw.print(" " + nfi.name); 1800 } 1801 pw.println(); 1802 pw.println(); 1803 1804 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1805 pw.print("Active default network: "); 1806 if (defaultNai == null) { 1807 pw.println("none"); 1808 } else { 1809 pw.println(defaultNai.network.netId); 1810 } 1811 pw.println(); 1812 1813 pw.println("Current Networks:"); 1814 pw.increaseIndent(); 1815 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1816 pw.println(nai.toString()); 1817 pw.increaseIndent(); 1818 pw.println("Requests:"); 1819 pw.increaseIndent(); 1820 for (int i = 0; i < nai.networkRequests.size(); i++) { 1821 pw.println(nai.networkRequests.valueAt(i).toString()); 1822 } 1823 pw.decreaseIndent(); 1824 pw.println("Lingered:"); 1825 pw.increaseIndent(); 1826 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1827 pw.decreaseIndent(); 1828 pw.decreaseIndent(); 1829 } 1830 pw.decreaseIndent(); 1831 pw.println(); 1832 1833 pw.println("Network Requests:"); 1834 pw.increaseIndent(); 1835 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1836 pw.println(nri.toString()); 1837 } 1838 pw.println(); 1839 pw.decreaseIndent(); 1840 1841 mLegacyTypeTracker.dump(pw); 1842 1843 synchronized (this) { 1844 pw.print("mNetTransitionWakeLock: currently " + 1845 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1846 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1847 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1848 } else { 1849 pw.println(", last requested never"); 1850 } 1851 } 1852 pw.println(); 1853 1854 mTethering.dump(fd, pw, args); 1855 1856 if (mInetLog != null && mInetLog.size() > 0) { 1857 pw.println(); 1858 pw.println("Inet condition reports:"); 1859 pw.increaseIndent(); 1860 for(int i = 0; i < mInetLog.size(); i++) { 1861 pw.println(mInetLog.get(i)); 1862 } 1863 pw.decreaseIndent(); 1864 } 1865 } 1866 1867 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1868 if (nai.network == null) return false; 1869 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1870 if (officialNai != null && officialNai.equals(nai)) return true; 1871 if (officialNai != null || VDBG) { 1872 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1873 " - " + nai); 1874 } 1875 return false; 1876 } 1877 1878 private boolean isRequest(NetworkRequest request) { 1879 return mNetworkRequests.get(request).isRequest; 1880 } 1881 1882 // must be stateless - things change under us. 1883 private class NetworkStateTrackerHandler extends Handler { 1884 public NetworkStateTrackerHandler(Looper looper) { 1885 super(looper); 1886 } 1887 1888 @Override 1889 public void handleMessage(Message msg) { 1890 NetworkInfo info; 1891 switch (msg.what) { 1892 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1893 handleAsyncChannelHalfConnect(msg); 1894 break; 1895 } 1896 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1897 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1898 if (nai != null) nai.asyncChannel.disconnect(); 1899 break; 1900 } 1901 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1902 handleAsyncChannelDisconnected(msg); 1903 break; 1904 } 1905 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1906 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1907 if (nai == null) { 1908 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1909 } else { 1910 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1911 } 1912 break; 1913 } 1914 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1915 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1916 if (nai == null) { 1917 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1918 } else { 1919 if (VDBG) { 1920 log("Update of LinkProperties for " + nai.name() + 1921 "; created=" + nai.created); 1922 } 1923 LinkProperties oldLp = nai.linkProperties; 1924 synchronized (nai) { 1925 nai.linkProperties = (LinkProperties)msg.obj; 1926 } 1927 if (nai.created) updateLinkProperties(nai, oldLp); 1928 } 1929 break; 1930 } 1931 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1932 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1933 if (nai == null) { 1934 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1935 break; 1936 } 1937 info = (NetworkInfo) msg.obj; 1938 updateNetworkInfo(nai, info); 1939 break; 1940 } 1941 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1942 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1943 if (nai == null) { 1944 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1945 break; 1946 } 1947 Integer score = (Integer) msg.obj; 1948 if (score != null) updateNetworkScore(nai, score.intValue()); 1949 break; 1950 } 1951 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1952 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1953 if (nai == null) { 1954 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1955 break; 1956 } 1957 try { 1958 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1959 } catch (Exception e) { 1960 // Never crash! 1961 loge("Exception in addVpnUidRanges: " + e); 1962 } 1963 break; 1964 } 1965 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1966 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1967 if (nai == null) { 1968 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1969 break; 1970 } 1971 try { 1972 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1973 } catch (Exception e) { 1974 // Never crash! 1975 loge("Exception in removeVpnUidRanges: " + e); 1976 } 1977 break; 1978 } 1979 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1980 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1981 if (nai == null) { 1982 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1983 break; 1984 } 1985 if (nai.created && !nai.networkMisc.explicitlySelected) { 1986 loge("ERROR: created network explicitly selected."); 1987 } 1988 nai.networkMisc.explicitlySelected = true; 1989 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1990 break; 1991 } 1992 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1993 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1994 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1995 final boolean valid = 1996 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1997 final boolean validationChanged = (valid != nai.lastValidated); 1998 nai.lastValidated = valid; 1999 if (valid) { 2000 if (DBG) log("Validated " + nai.name()); 2001 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 2002 if (!nai.everValidated) { 2003 nai.everValidated = true; 2004 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 2005 ReapUnvalidatedNetworks.REAP); 2006 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2007 sendUpdatedScoreToFactories(nai); 2008 } 2009 } else { 2010 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 2011 } 2012 updateInetCondition(nai); 2013 // Let the NetworkAgent know the state of its network 2014 nai.asyncChannel.sendMessage( 2015 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2016 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2017 0, null); 2018 2019 if (validationChanged) { 2020 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 2021 } 2022 } 2023 break; 2024 } 2025 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2026 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2027 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2028 handleLingerComplete(nai); 2029 } 2030 break; 2031 } 2032 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2033 final int netId = msg.arg2; 2034 if (msg.arg1 == 0) { 2035 setProvNotificationVisibleIntent(false, netId, null, 0, null, null); 2036 } else { 2037 final NetworkAgentInfo nai; 2038 synchronized (mNetworkForNetId) { 2039 nai = mNetworkForNetId.get(netId); 2040 } 2041 if (nai == null) { 2042 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2043 break; 2044 } 2045 nai.captivePortalDetected = true; 2046 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2047 nai.networkInfo.getType(),nai.networkInfo.getExtraInfo(), 2048 (PendingIntent)msg.obj); 2049 } 2050 break; 2051 } 2052 } 2053 } 2054 } 2055 2056 // Cancel any lingering so the linger timeout doesn't teardown a network. 2057 // This should be called when a network begins satisfying a NetworkRequest. 2058 // Note: depending on what state the NetworkMonitor is in (e.g., 2059 // if it's awaiting captive portal login, or if validation failed), this 2060 // may trigger a re-evaluation of the network. 2061 private void unlinger(NetworkAgentInfo nai) { 2062 if (VDBG) log("Canceling linger of " + nai.name()); 2063 // If network has never been validated, it cannot have been lingered, so don't bother 2064 // needlessly triggering a re-evaluation. 2065 if (!nai.everValidated) return; 2066 nai.networkLingered.clear(); 2067 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2068 } 2069 2070 private void handleAsyncChannelHalfConnect(Message msg) { 2071 AsyncChannel ac = (AsyncChannel) msg.obj; 2072 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2073 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2074 if (VDBG) log("NetworkFactory connected"); 2075 // A network factory has connected. Send it all current NetworkRequests. 2076 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2077 if (nri.isRequest == false) continue; 2078 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2079 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2080 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2081 } 2082 } else { 2083 loge("Error connecting NetworkFactory"); 2084 mNetworkFactoryInfos.remove(msg.obj); 2085 } 2086 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2087 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2088 if (VDBG) log("NetworkAgent connected"); 2089 // A network agent has requested a connection. Establish the connection. 2090 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2091 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2092 } else { 2093 loge("Error connecting NetworkAgent"); 2094 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2095 if (nai != null) { 2096 final boolean wasDefault = isDefaultNetwork(nai); 2097 synchronized (mNetworkForNetId) { 2098 mNetworkForNetId.remove(nai.network.netId); 2099 mNetIdInUse.delete(nai.network.netId); 2100 } 2101 // Just in case. 2102 mLegacyTypeTracker.remove(nai, wasDefault); 2103 } 2104 } 2105 } 2106 } 2107 2108 private void handleAsyncChannelDisconnected(Message msg) { 2109 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2110 if (nai != null) { 2111 if (DBG) { 2112 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2113 } 2114 // A network agent has disconnected. 2115 if (nai.created) { 2116 // Tell netd to clean up the configuration for this network 2117 // (routing rules, DNS, etc). 2118 try { 2119 mNetd.removeNetwork(nai.network.netId); 2120 } catch (Exception e) { 2121 loge("Exception removing network: " + e); 2122 } 2123 } 2124 // TODO - if we move the logic to the network agent (have them disconnect 2125 // because they lost all their requests or because their score isn't good) 2126 // then they would disconnect organically, report their new state and then 2127 // disconnect the channel. 2128 if (nai.networkInfo.isConnected()) { 2129 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2130 null, null); 2131 } 2132 final boolean wasDefault = isDefaultNetwork(nai); 2133 if (wasDefault) { 2134 mDefaultInetConditionPublished = 0; 2135 } 2136 notifyIfacesChanged(); 2137 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2138 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2139 mNetworkAgentInfos.remove(msg.replyTo); 2140 updateClat(null, nai.linkProperties, nai); 2141 synchronized (mNetworkForNetId) { 2142 mNetworkForNetId.remove(nai.network.netId); 2143 mNetIdInUse.delete(nai.network.netId); 2144 } 2145 // Since we've lost the network, go through all the requests that 2146 // it was satisfying and see if any other factory can satisfy them. 2147 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2148 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2149 for (int i = 0; i < nai.networkRequests.size(); i++) { 2150 NetworkRequest request = nai.networkRequests.valueAt(i); 2151 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2152 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2153 if (DBG) { 2154 log("Checking for replacement network to handle request " + request ); 2155 } 2156 mNetworkForRequestId.remove(request.requestId); 2157 sendUpdatedScoreToFactories(request, 0); 2158 NetworkAgentInfo alternative = null; 2159 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2160 if (existing.satisfies(request) && 2161 (alternative == null || 2162 alternative.getCurrentScore() < existing.getCurrentScore())) { 2163 alternative = existing; 2164 } 2165 } 2166 if (alternative != null) { 2167 if (DBG) log(" found replacement in " + alternative.name()); 2168 if (!toActivate.contains(alternative)) { 2169 toActivate.add(alternative); 2170 } 2171 } 2172 } 2173 } 2174 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2175 removeDataActivityTracking(nai); 2176 notifyLockdownVpn(nai); 2177 requestNetworkTransitionWakelock(nai.name()); 2178 } 2179 mLegacyTypeTracker.remove(nai, wasDefault); 2180 for (NetworkAgentInfo networkToActivate : toActivate) { 2181 unlinger(networkToActivate); 2182 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2183 ReapUnvalidatedNetworks.DONT_REAP); 2184 } 2185 } 2186 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2187 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2188 } 2189 2190 // If this method proves to be too slow then we can maintain a separate 2191 // pendingIntent => NetworkRequestInfo map. 2192 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2193 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2194 Intent intent = pendingIntent.getIntent(); 2195 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2196 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2197 if (existingPendingIntent != null && 2198 existingPendingIntent.getIntent().filterEquals(intent)) { 2199 return entry.getValue(); 2200 } 2201 } 2202 return null; 2203 } 2204 2205 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2206 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2207 2208 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2209 if (existingRequest != null) { // remove the existing request. 2210 if (DBG) log("Replacing " + existingRequest.request + " with " 2211 + nri.request + " because their intents matched."); 2212 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2213 } 2214 handleRegisterNetworkRequest(nri); 2215 } 2216 2217 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2218 mNetworkRequests.put(nri.request, nri); 2219 2220 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2221 2222 // Check for the best currently alive network that satisfies this request 2223 NetworkAgentInfo bestNetwork = null; 2224 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2225 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2226 if (network.satisfies(nri.request)) { 2227 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2228 if (!nri.isRequest) { 2229 // Not setting bestNetwork here as a listening NetworkRequest may be 2230 // satisfied by multiple Networks. Instead the request is added to 2231 // each satisfying Network and notified about each. 2232 if (!network.addRequest(nri.request)) { 2233 Slog.wtf(TAG, "BUG: " + network.name() + " already has " + nri.request); 2234 } 2235 notifyNetworkCallback(network, nri); 2236 } else if (bestNetwork == null || 2237 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2238 bestNetwork = network; 2239 } 2240 } 2241 } 2242 if (bestNetwork != null) { 2243 if (DBG) log("using " + bestNetwork.name()); 2244 unlinger(bestNetwork); 2245 if (!bestNetwork.addRequest(nri.request)) { 2246 Slog.wtf(TAG, "BUG: " + bestNetwork.name() + " already has " + nri.request); 2247 } 2248 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2249 notifyNetworkCallback(bestNetwork, nri); 2250 if (nri.request.legacyType != TYPE_NONE) { 2251 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2252 } 2253 } 2254 2255 if (nri.isRequest) { 2256 if (DBG) log("sending new NetworkRequest to factories"); 2257 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2258 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2259 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2260 0, nri.request); 2261 } 2262 } 2263 } 2264 2265 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2266 int callingUid) { 2267 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2268 if (nri != null) { 2269 handleReleaseNetworkRequest(nri.request, callingUid); 2270 } 2271 } 2272 2273 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2274 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2275 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2276 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2277 private boolean unneeded(NetworkAgentInfo nai) { 2278 if (!nai.created || nai.isVPN()) return false; 2279 boolean unneeded = true; 2280 if (nai.everValidated) { 2281 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2282 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2283 try { 2284 if (isRequest(nr)) unneeded = false; 2285 } catch (Exception e) { 2286 loge("Request " + nr + " not found in mNetworkRequests."); 2287 loge(" it came from request list of " + nai.name()); 2288 } 2289 } 2290 } else { 2291 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2292 // If this Network is already the highest scoring Network for a request, or if 2293 // there is hope for it to become one if it validated, then it is needed. 2294 if (nri.isRequest && nai.satisfies(nri.request) && 2295 (nai.networkRequests.get(nri.request.requestId) != null || 2296 // Note that this catches two important cases: 2297 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2298 // is currently satisfying the request. This is desirable when 2299 // cellular ends up validating but WiFi does not. 2300 // 2. Unvalidated WiFi will not be reaped when validated cellular 2301 // is currently satsifying the request. This is desirable when 2302 // WiFi ends up validating and out scoring cellular. 2303 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2304 nai.getCurrentScoreAsValidated())) { 2305 unneeded = false; 2306 break; 2307 } 2308 } 2309 } 2310 return unneeded; 2311 } 2312 2313 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2314 NetworkRequestInfo nri = mNetworkRequests.get(request); 2315 if (nri != null) { 2316 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2317 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2318 return; 2319 } 2320 if (DBG) log("releasing NetworkRequest " + request); 2321 nri.unlinkDeathRecipient(); 2322 mNetworkRequests.remove(request); 2323 if (nri.isRequest) { 2324 // Find all networks that are satisfying this request and remove the request 2325 // from their request lists. 2326 // TODO - it's my understanding that for a request there is only a single 2327 // network satisfying it, so this loop is wasteful 2328 boolean wasKept = false; 2329 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2330 if (nai.networkRequests.get(nri.request.requestId) != null) { 2331 nai.networkRequests.remove(nri.request.requestId); 2332 if (DBG) { 2333 log(" Removing from current network " + nai.name() + 2334 ", leaving " + nai.networkRequests.size() + 2335 " requests."); 2336 } 2337 if (unneeded(nai)) { 2338 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2339 teardownUnneededNetwork(nai); 2340 } else { 2341 // suspect there should only be one pass through here 2342 // but if any were kept do the check below 2343 wasKept |= true; 2344 } 2345 } 2346 } 2347 2348 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2349 if (nai != null) { 2350 mNetworkForRequestId.remove(nri.request.requestId); 2351 } 2352 // Maintain the illusion. When this request arrived, we might have pretended 2353 // that a network connected to serve it, even though the network was already 2354 // connected. Now that this request has gone away, we might have to pretend 2355 // that the network disconnected. LegacyTypeTracker will generate that 2356 // phantom disconnect for this type. 2357 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2358 boolean doRemove = true; 2359 if (wasKept) { 2360 // check if any of the remaining requests for this network are for the 2361 // same legacy type - if so, don't remove the nai 2362 for (int i = 0; i < nai.networkRequests.size(); i++) { 2363 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2364 if (otherRequest.legacyType == nri.request.legacyType && 2365 isRequest(otherRequest)) { 2366 if (DBG) log(" still have other legacy request - leaving"); 2367 doRemove = false; 2368 } 2369 } 2370 } 2371 2372 if (doRemove) { 2373 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2374 } 2375 } 2376 2377 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2378 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2379 nri.request); 2380 } 2381 } else { 2382 // listens don't have a singular affectedNetwork. Check all networks to see 2383 // if this listen request applies and remove it. 2384 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2385 nai.networkRequests.remove(nri.request.requestId); 2386 } 2387 } 2388 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2389 } 2390 } 2391 2392 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2393 enforceConnectivityInternalPermission(); 2394 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2395 accept ? 1 : 0, always ? 1: 0, network)); 2396 } 2397 2398 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2399 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2400 " accept=" + accept + " always=" + always); 2401 2402 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2403 if (nai == null) { 2404 // Nothing to do. 2405 return; 2406 } 2407 2408 if (nai.everValidated) { 2409 // The network validated while the dialog box was up. Take no action. 2410 return; 2411 } 2412 2413 if (!nai.networkMisc.explicitlySelected) { 2414 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2415 } 2416 2417 if (accept != nai.networkMisc.acceptUnvalidated) { 2418 int oldScore = nai.getCurrentScore(); 2419 nai.networkMisc.acceptUnvalidated = accept; 2420 rematchAllNetworksAndRequests(nai, oldScore); 2421 sendUpdatedScoreToFactories(nai); 2422 } 2423 2424 if (always) { 2425 nai.asyncChannel.sendMessage( 2426 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2427 } 2428 2429 if (!accept) { 2430 // Tell the NetworkAgent that the network does not have Internet access (because that's 2431 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2432 // the future. We do this now because NetworkMonitor might not yet have finished 2433 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2434 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2435 NetworkAgent.INVALID_NETWORK, 0, null); 2436 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2437 // to reconnect to it immediately. http://b/20739299 2438 } 2439 2440 } 2441 2442 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2443 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2444 mHandler.sendMessageDelayed( 2445 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2446 PROMPT_UNVALIDATED_DELAY_MS); 2447 } 2448 2449 private void handlePromptUnvalidated(Network network) { 2450 if (DBG) log("handlePromptUnvalidated " + network); 2451 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2452 2453 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2454 // we haven't already been told to switch to it regardless of whether it validated or not. 2455 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2456 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2457 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2458 return; 2459 } 2460 2461 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2462 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2463 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2464 intent.setClassName("com.android.settings", 2465 "com.android.settings.wifi.WifiNoInternetDialog"); 2466 2467 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2468 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2469 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2470 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent); 2471 } 2472 2473 private class InternalHandler extends Handler { 2474 public InternalHandler(Looper looper) { 2475 super(looper); 2476 } 2477 2478 @Override 2479 public void handleMessage(Message msg) { 2480 switch (msg.what) { 2481 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2482 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2483 String causedBy = null; 2484 synchronized (ConnectivityService.this) { 2485 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2486 mNetTransitionWakeLock.isHeld()) { 2487 mNetTransitionWakeLock.release(); 2488 causedBy = mNetTransitionWakeLockCausedBy; 2489 } else { 2490 break; 2491 } 2492 } 2493 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2494 log("Failed to find a new network - expiring NetTransition Wakelock"); 2495 } else { 2496 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2497 " cleared because we found a replacement network"); 2498 } 2499 break; 2500 } 2501 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2502 handleDeprecatedGlobalHttpProxy(); 2503 break; 2504 } 2505 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2506 Intent intent = (Intent)msg.obj; 2507 sendStickyBroadcast(intent); 2508 break; 2509 } 2510 case EVENT_PROXY_HAS_CHANGED: { 2511 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2512 break; 2513 } 2514 case EVENT_REGISTER_NETWORK_FACTORY: { 2515 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2516 break; 2517 } 2518 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2519 handleUnregisterNetworkFactory((Messenger)msg.obj); 2520 break; 2521 } 2522 case EVENT_REGISTER_NETWORK_AGENT: { 2523 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2524 break; 2525 } 2526 case EVENT_REGISTER_NETWORK_REQUEST: 2527 case EVENT_REGISTER_NETWORK_LISTENER: { 2528 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2529 break; 2530 } 2531 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2532 handleRegisterNetworkRequestWithIntent(msg); 2533 break; 2534 } 2535 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2536 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2537 break; 2538 } 2539 case EVENT_RELEASE_NETWORK_REQUEST: { 2540 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2541 break; 2542 } 2543 case EVENT_SET_ACCEPT_UNVALIDATED: { 2544 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2545 break; 2546 } 2547 case EVENT_PROMPT_UNVALIDATED: { 2548 handlePromptUnvalidated((Network) msg.obj); 2549 break; 2550 } 2551 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2552 handleMobileDataAlwaysOn(); 2553 break; 2554 } 2555 case EVENT_SYSTEM_READY: { 2556 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2557 nai.networkMonitor.systemReady = true; 2558 } 2559 break; 2560 } 2561 } 2562 } 2563 } 2564 2565 // javadoc from interface 2566 public int tether(String iface) { 2567 ConnectivityManager.enforceTetherChangePermission(mContext); 2568 if (isTetheringSupported()) { 2569 return mTethering.tether(iface); 2570 } else { 2571 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2572 } 2573 } 2574 2575 // javadoc from interface 2576 public int untether(String iface) { 2577 ConnectivityManager.enforceTetherChangePermission(mContext); 2578 2579 if (isTetheringSupported()) { 2580 return mTethering.untether(iface); 2581 } else { 2582 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2583 } 2584 } 2585 2586 // javadoc from interface 2587 public int getLastTetherError(String iface) { 2588 enforceTetherAccessPermission(); 2589 2590 if (isTetheringSupported()) { 2591 return mTethering.getLastTetherError(iface); 2592 } else { 2593 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2594 } 2595 } 2596 2597 // TODO - proper iface API for selection by property, inspection, etc 2598 public String[] getTetherableUsbRegexs() { 2599 enforceTetherAccessPermission(); 2600 if (isTetheringSupported()) { 2601 return mTethering.getTetherableUsbRegexs(); 2602 } else { 2603 return new String[0]; 2604 } 2605 } 2606 2607 public String[] getTetherableWifiRegexs() { 2608 enforceTetherAccessPermission(); 2609 if (isTetheringSupported()) { 2610 return mTethering.getTetherableWifiRegexs(); 2611 } else { 2612 return new String[0]; 2613 } 2614 } 2615 2616 public String[] getTetherableBluetoothRegexs() { 2617 enforceTetherAccessPermission(); 2618 if (isTetheringSupported()) { 2619 return mTethering.getTetherableBluetoothRegexs(); 2620 } else { 2621 return new String[0]; 2622 } 2623 } 2624 2625 public int setUsbTethering(boolean enable) { 2626 ConnectivityManager.enforceTetherChangePermission(mContext); 2627 if (isTetheringSupported()) { 2628 return mTethering.setUsbTethering(enable); 2629 } else { 2630 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2631 } 2632 } 2633 2634 // TODO - move iface listing, queries, etc to new module 2635 // javadoc from interface 2636 public String[] getTetherableIfaces() { 2637 enforceTetherAccessPermission(); 2638 return mTethering.getTetherableIfaces(); 2639 } 2640 2641 public String[] getTetheredIfaces() { 2642 enforceTetherAccessPermission(); 2643 return mTethering.getTetheredIfaces(); 2644 } 2645 2646 public String[] getTetheringErroredIfaces() { 2647 enforceTetherAccessPermission(); 2648 return mTethering.getErroredIfaces(); 2649 } 2650 2651 public String[] getTetheredDhcpRanges() { 2652 enforceConnectivityInternalPermission(); 2653 return mTethering.getTetheredDhcpRanges(); 2654 } 2655 2656 // if ro.tether.denied = true we default to no tethering 2657 // gservices could set the secure setting to 1 though to enable it on a build where it 2658 // had previously been turned off. 2659 public boolean isTetheringSupported() { 2660 enforceTetherAccessPermission(); 2661 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2662 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2663 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2664 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2665 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2666 mTethering.getTetherableWifiRegexs().length != 0 || 2667 mTethering.getTetherableBluetoothRegexs().length != 0) && 2668 mTethering.getUpstreamIfaceTypes().length != 0); 2669 } 2670 2671 // Called when we lose the default network and have no replacement yet. 2672 // This will automatically be cleared after X seconds or a new default network 2673 // becomes CONNECTED, whichever happens first. The timer is started by the 2674 // first caller and not restarted by subsequent callers. 2675 private void requestNetworkTransitionWakelock(String forWhom) { 2676 int serialNum = 0; 2677 synchronized (this) { 2678 if (mNetTransitionWakeLock.isHeld()) return; 2679 serialNum = ++mNetTransitionWakeLockSerialNumber; 2680 mNetTransitionWakeLock.acquire(); 2681 mNetTransitionWakeLockCausedBy = forWhom; 2682 } 2683 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2684 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2685 mNetTransitionWakeLockTimeout); 2686 return; 2687 } 2688 2689 // 100 percent is full good, 0 is full bad. 2690 public void reportInetCondition(int networkType, int percentage) { 2691 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2692 if (nai == null) return; 2693 reportNetworkConnectivity(nai.network, percentage > 50); 2694 } 2695 2696 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2697 enforceAccessPermission(); 2698 enforceInternetPermission(); 2699 2700 NetworkAgentInfo nai; 2701 if (network == null) { 2702 nai = getDefaultNetwork(); 2703 } else { 2704 nai = getNetworkAgentInfoForNetwork(network); 2705 } 2706 if (nai == null) return; 2707 // Revalidate if the app report does not match our current validated state. 2708 if (hasConnectivity == nai.lastValidated) return; 2709 final int uid = Binder.getCallingUid(); 2710 if (DBG) { 2711 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2712 ") by " + uid); 2713 } 2714 synchronized (nai) { 2715 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2716 // which isn't meant to work on uncreated networks. 2717 if (!nai.created) return; 2718 2719 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2720 2721 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2722 } 2723 } 2724 2725 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2726 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2727 enforceConnectivityInternalPermission(); 2728 } 2729 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2730 if (nai == null) return; 2731 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2732 actionToken); 2733 } 2734 2735 private ProxyInfo getDefaultProxy() { 2736 // this information is already available as a world read/writable jvm property 2737 // so this API change wouldn't have a benifit. It also breaks the passing 2738 // of proxy info to all the JVMs. 2739 // enforceAccessPermission(); 2740 synchronized (mProxyLock) { 2741 ProxyInfo ret = mGlobalProxy; 2742 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2743 return ret; 2744 } 2745 } 2746 2747 public ProxyInfo getProxyForNetwork(Network network) { 2748 if (network == null) return getDefaultProxy(); 2749 final ProxyInfo globalProxy = getGlobalProxy(); 2750 if (globalProxy != null) return globalProxy; 2751 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2752 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2753 // caller may not have. 2754 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2755 if (nai == null) return null; 2756 synchronized (nai) { 2757 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2758 if (proxyInfo == null) return null; 2759 return new ProxyInfo(proxyInfo); 2760 } 2761 } 2762 2763 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2764 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2765 // proxy is null then there is no proxy in place). 2766 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2767 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2768 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2769 proxy = null; 2770 } 2771 return proxy; 2772 } 2773 2774 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2775 // better for determining if a new proxy broadcast is necessary: 2776 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2777 // avoid unnecessary broadcasts. 2778 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2779 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2780 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2781 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2782 // all set. 2783 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2784 a = canonicalizeProxyInfo(a); 2785 b = canonicalizeProxyInfo(b); 2786 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2787 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2788 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2789 } 2790 2791 public void setGlobalProxy(ProxyInfo proxyProperties) { 2792 enforceConnectivityInternalPermission(); 2793 2794 synchronized (mProxyLock) { 2795 if (proxyProperties == mGlobalProxy) return; 2796 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2797 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2798 2799 String host = ""; 2800 int port = 0; 2801 String exclList = ""; 2802 String pacFileUrl = ""; 2803 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2804 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2805 if (!proxyProperties.isValid()) { 2806 if (DBG) 2807 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2808 return; 2809 } 2810 mGlobalProxy = new ProxyInfo(proxyProperties); 2811 host = mGlobalProxy.getHost(); 2812 port = mGlobalProxy.getPort(); 2813 exclList = mGlobalProxy.getExclusionListAsString(); 2814 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2815 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2816 } 2817 } else { 2818 mGlobalProxy = null; 2819 } 2820 ContentResolver res = mContext.getContentResolver(); 2821 final long token = Binder.clearCallingIdentity(); 2822 try { 2823 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2824 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2825 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2826 exclList); 2827 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2828 } finally { 2829 Binder.restoreCallingIdentity(token); 2830 } 2831 2832 if (mGlobalProxy == null) { 2833 proxyProperties = mDefaultProxy; 2834 } 2835 sendProxyBroadcast(proxyProperties); 2836 } 2837 } 2838 2839 private void loadGlobalProxy() { 2840 ContentResolver res = mContext.getContentResolver(); 2841 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2842 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2843 String exclList = Settings.Global.getString(res, 2844 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2845 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2846 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2847 ProxyInfo proxyProperties; 2848 if (!TextUtils.isEmpty(pacFileUrl)) { 2849 proxyProperties = new ProxyInfo(pacFileUrl); 2850 } else { 2851 proxyProperties = new ProxyInfo(host, port, exclList); 2852 } 2853 if (!proxyProperties.isValid()) { 2854 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2855 return; 2856 } 2857 2858 synchronized (mProxyLock) { 2859 mGlobalProxy = proxyProperties; 2860 } 2861 } 2862 } 2863 2864 public ProxyInfo getGlobalProxy() { 2865 // this information is already available as a world read/writable jvm property 2866 // so this API change wouldn't have a benifit. It also breaks the passing 2867 // of proxy info to all the JVMs. 2868 // enforceAccessPermission(); 2869 synchronized (mProxyLock) { 2870 return mGlobalProxy; 2871 } 2872 } 2873 2874 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2875 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2876 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2877 proxy = null; 2878 } 2879 synchronized (mProxyLock) { 2880 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2881 if (mDefaultProxy == proxy) return; // catches repeated nulls 2882 if (proxy != null && !proxy.isValid()) { 2883 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2884 return; 2885 } 2886 2887 // This call could be coming from the PacManager, containing the port of the local 2888 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2889 // global (to get the correct local port), and send a broadcast. 2890 // TODO: Switch PacManager to have its own message to send back rather than 2891 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2892 if ((mGlobalProxy != null) && (proxy != null) 2893 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2894 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2895 mGlobalProxy = proxy; 2896 sendProxyBroadcast(mGlobalProxy); 2897 return; 2898 } 2899 mDefaultProxy = proxy; 2900 2901 if (mGlobalProxy != null) return; 2902 if (!mDefaultProxyDisabled) { 2903 sendProxyBroadcast(proxy); 2904 } 2905 } 2906 } 2907 2908 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2909 // This method gets called when any network changes proxy, but the broadcast only ever contains 2910 // the default proxy (even if it hasn't changed). 2911 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2912 // world where an app might be bound to a non-default network. 2913 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2914 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2915 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2916 2917 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2918 sendProxyBroadcast(getDefaultProxy()); 2919 } 2920 } 2921 2922 private void handleDeprecatedGlobalHttpProxy() { 2923 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2924 Settings.Global.HTTP_PROXY); 2925 if (!TextUtils.isEmpty(proxy)) { 2926 String data[] = proxy.split(":"); 2927 if (data.length == 0) { 2928 return; 2929 } 2930 2931 String proxyHost = data[0]; 2932 int proxyPort = 8080; 2933 if (data.length > 1) { 2934 try { 2935 proxyPort = Integer.parseInt(data[1]); 2936 } catch (NumberFormatException e) { 2937 return; 2938 } 2939 } 2940 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2941 setGlobalProxy(p); 2942 } 2943 } 2944 2945 private void sendProxyBroadcast(ProxyInfo proxy) { 2946 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2947 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2948 if (DBG) log("sending Proxy Broadcast for " + proxy); 2949 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2950 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2951 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2952 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2953 final long ident = Binder.clearCallingIdentity(); 2954 try { 2955 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2956 } finally { 2957 Binder.restoreCallingIdentity(ident); 2958 } 2959 } 2960 2961 private static class SettingsObserver extends ContentObserver { 2962 final private HashMap<Uri, Integer> mUriEventMap; 2963 final private Context mContext; 2964 final private Handler mHandler; 2965 2966 SettingsObserver(Context context, Handler handler) { 2967 super(null); 2968 mUriEventMap = new HashMap<Uri, Integer>(); 2969 mContext = context; 2970 mHandler = handler; 2971 } 2972 2973 void observe(Uri uri, int what) { 2974 mUriEventMap.put(uri, what); 2975 final ContentResolver resolver = mContext.getContentResolver(); 2976 resolver.registerContentObserver(uri, false, this); 2977 } 2978 2979 @Override 2980 public void onChange(boolean selfChange) { 2981 Slog.wtf(TAG, "Should never be reached."); 2982 } 2983 2984 @Override 2985 public void onChange(boolean selfChange, Uri uri) { 2986 final Integer what = mUriEventMap.get(uri); 2987 if (what != null) { 2988 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2989 } else { 2990 loge("No matching event to send for URI=" + uri); 2991 } 2992 } 2993 } 2994 2995 private static void log(String s) { 2996 Slog.d(TAG, s); 2997 } 2998 2999 private static void loge(String s) { 3000 Slog.e(TAG, s); 3001 } 3002 3003 private static <T> T checkNotNull(T value, String message) { 3004 if (value == null) { 3005 throw new NullPointerException(message); 3006 } 3007 return value; 3008 } 3009 3010 /** 3011 * Prepare for a VPN application. 3012 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3013 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3014 * 3015 * @param oldPackage Package name of the application which currently controls VPN, which will 3016 * be replaced. If there is no such application, this should should either be 3017 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3018 * @param newPackage Package name of the application which should gain control of VPN, or 3019 * {@code null} to disable. 3020 * @param userId User for whom to prepare the new VPN. 3021 * 3022 * @hide 3023 */ 3024 @Override 3025 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3026 int userId) { 3027 enforceCrossUserPermission(userId); 3028 throwIfLockdownEnabled(); 3029 3030 synchronized(mVpns) { 3031 Vpn vpn = mVpns.get(userId); 3032 if (vpn != null) { 3033 return vpn.prepare(oldPackage, newPackage); 3034 } else { 3035 return false; 3036 } 3037 } 3038 } 3039 3040 /** 3041 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3042 * This method is used by system-privileged apps. 3043 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3044 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3045 * 3046 * @param packageName The package for which authorization state should change. 3047 * @param userId User for whom {@code packageName} is installed. 3048 * @param authorized {@code true} if this app should be able to start a VPN connection without 3049 * explicit user approval, {@code false} if not. 3050 * 3051 * @hide 3052 */ 3053 @Override 3054 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3055 enforceCrossUserPermission(userId); 3056 3057 synchronized(mVpns) { 3058 Vpn vpn = mVpns.get(userId); 3059 if (vpn != null) { 3060 vpn.setPackageAuthorization(packageName, authorized); 3061 } 3062 } 3063 } 3064 3065 /** 3066 * Configure a TUN interface and return its file descriptor. Parameters 3067 * are encoded and opaque to this class. This method is used by VpnBuilder 3068 * and not available in ConnectivityManager. Permissions are checked in 3069 * Vpn class. 3070 * @hide 3071 */ 3072 @Override 3073 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3074 throwIfLockdownEnabled(); 3075 int user = UserHandle.getUserId(Binder.getCallingUid()); 3076 synchronized(mVpns) { 3077 return mVpns.get(user).establish(config); 3078 } 3079 } 3080 3081 /** 3082 * Start legacy VPN, controlling native daemons as needed. Creates a 3083 * secondary thread to perform connection work, returning quickly. 3084 */ 3085 @Override 3086 public void startLegacyVpn(VpnProfile profile) { 3087 throwIfLockdownEnabled(); 3088 final LinkProperties egress = getActiveLinkProperties(); 3089 if (egress == null) { 3090 throw new IllegalStateException("Missing active network connection"); 3091 } 3092 int user = UserHandle.getUserId(Binder.getCallingUid()); 3093 synchronized(mVpns) { 3094 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3095 } 3096 } 3097 3098 /** 3099 * Return the information of the ongoing legacy VPN. This method is used 3100 * by VpnSettings and not available in ConnectivityManager. Permissions 3101 * are checked in Vpn class. 3102 */ 3103 @Override 3104 public LegacyVpnInfo getLegacyVpnInfo() { 3105 throwIfLockdownEnabled(); 3106 int user = UserHandle.getUserId(Binder.getCallingUid()); 3107 synchronized(mVpns) { 3108 return mVpns.get(user).getLegacyVpnInfo(); 3109 } 3110 } 3111 3112 /** 3113 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3114 * and not available in ConnectivityManager. 3115 */ 3116 @Override 3117 public VpnInfo[] getAllVpnInfo() { 3118 enforceConnectivityInternalPermission(); 3119 if (mLockdownEnabled) { 3120 return new VpnInfo[0]; 3121 } 3122 3123 synchronized(mVpns) { 3124 List<VpnInfo> infoList = new ArrayList<>(); 3125 for (int i = 0; i < mVpns.size(); i++) { 3126 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3127 if (info != null) { 3128 infoList.add(info); 3129 } 3130 } 3131 return infoList.toArray(new VpnInfo[infoList.size()]); 3132 } 3133 } 3134 3135 /** 3136 * @return VPN information for accounting, or null if we can't retrieve all required 3137 * information, e.g primary underlying iface. 3138 */ 3139 @Nullable 3140 private VpnInfo createVpnInfo(Vpn vpn) { 3141 VpnInfo info = vpn.getVpnInfo(); 3142 if (info == null) { 3143 return null; 3144 } 3145 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3146 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3147 // the underlyingNetworks list. 3148 if (underlyingNetworks == null) { 3149 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3150 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3151 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3152 } 3153 } else if (underlyingNetworks.length > 0) { 3154 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3155 if (linkProperties != null) { 3156 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3157 } 3158 } 3159 return info.primaryUnderlyingIface == null ? null : info; 3160 } 3161 3162 /** 3163 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3164 * VpnDialogs and not available in ConnectivityManager. 3165 * Permissions are checked in Vpn class. 3166 * @hide 3167 */ 3168 @Override 3169 public VpnConfig getVpnConfig(int userId) { 3170 enforceCrossUserPermission(userId); 3171 synchronized(mVpns) { 3172 Vpn vpn = mVpns.get(userId); 3173 if (vpn != null) { 3174 return vpn.getVpnConfig(); 3175 } else { 3176 return null; 3177 } 3178 } 3179 } 3180 3181 @Override 3182 public boolean updateLockdownVpn() { 3183 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3184 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3185 return false; 3186 } 3187 3188 // Tear down existing lockdown if profile was removed 3189 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3190 if (mLockdownEnabled) { 3191 if (!mKeyStore.isUnlocked()) { 3192 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3193 return false; 3194 } 3195 3196 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3197 final VpnProfile profile = VpnProfile.decode( 3198 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3199 int user = UserHandle.getUserId(Binder.getCallingUid()); 3200 synchronized(mVpns) { 3201 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3202 profile)); 3203 } 3204 } else { 3205 setLockdownTracker(null); 3206 } 3207 3208 return true; 3209 } 3210 3211 /** 3212 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3213 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3214 */ 3215 private void setLockdownTracker(LockdownVpnTracker tracker) { 3216 // Shutdown any existing tracker 3217 final LockdownVpnTracker existing = mLockdownTracker; 3218 mLockdownTracker = null; 3219 if (existing != null) { 3220 existing.shutdown(); 3221 } 3222 3223 try { 3224 if (tracker != null) { 3225 mNetd.setFirewallEnabled(true); 3226 mNetd.setFirewallInterfaceRule("lo", true); 3227 mLockdownTracker = tracker; 3228 mLockdownTracker.init(); 3229 } else { 3230 mNetd.setFirewallEnabled(false); 3231 } 3232 } catch (RemoteException e) { 3233 // ignored; NMS lives inside system_server 3234 } 3235 } 3236 3237 private void throwIfLockdownEnabled() { 3238 if (mLockdownEnabled) { 3239 throw new IllegalStateException("Unavailable in lockdown mode"); 3240 } 3241 } 3242 3243 @Override 3244 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3245 // TODO: Remove? Any reason to trigger a provisioning check? 3246 return -1; 3247 } 3248 3249 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3250 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3251 3252 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3253 if (DBG) { 3254 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3255 + " action=" + action); 3256 } 3257 Intent intent = new Intent(action); 3258 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3259 // Concatenate the range of types onto the range of NetIDs. 3260 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3261 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3262 networkType, null, pendingIntent); 3263 } 3264 3265 /** 3266 * Show or hide network provisioning notifications. 3267 * 3268 * We use notifications for two purposes: to notify that a network requires sign in 3269 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3270 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3271 * particular network we can display the notification type that was most recently requested. 3272 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3273 * might first display NO_INTERNET, and then when the captive portal check completes, display 3274 * SIGN_IN. 3275 * 3276 * @param id an identifier that uniquely identifies this notification. This must match 3277 * between show and hide calls. We use the NetID value but for legacy callers 3278 * we concatenate the range of types with the range of NetIDs. 3279 */ 3280 private void setProvNotificationVisibleIntent(boolean visible, int id, 3281 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent) { 3282 if (DBG) { 3283 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3284 + " networkType=" + getNetworkTypeName(networkType) 3285 + " extraInfo=" + extraInfo); 3286 } 3287 3288 Resources r = Resources.getSystem(); 3289 NotificationManager notificationManager = (NotificationManager) mContext 3290 .getSystemService(Context.NOTIFICATION_SERVICE); 3291 3292 if (visible) { 3293 CharSequence title; 3294 CharSequence details; 3295 int icon; 3296 Notification notification = new Notification(); 3297 if (notifyType == NotificationType.NO_INTERNET && 3298 networkType == ConnectivityManager.TYPE_WIFI) { 3299 title = r.getString(R.string.wifi_no_internet, 0); 3300 details = r.getString(R.string.wifi_no_internet_detailed); 3301 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3302 } else if (notifyType == NotificationType.SIGN_IN) { 3303 switch (networkType) { 3304 case ConnectivityManager.TYPE_WIFI: 3305 title = r.getString(R.string.wifi_available_sign_in, 0); 3306 details = r.getString(R.string.network_available_sign_in_detailed, 3307 extraInfo); 3308 icon = R.drawable.stat_notify_wifi_in_range; 3309 break; 3310 case ConnectivityManager.TYPE_MOBILE: 3311 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3312 title = r.getString(R.string.network_available_sign_in, 0); 3313 // TODO: Change this to pull from NetworkInfo once a printable 3314 // name has been added to it 3315 details = mTelephonyManager.getNetworkOperatorName(); 3316 icon = R.drawable.stat_notify_rssi_in_range; 3317 break; 3318 default: 3319 title = r.getString(R.string.network_available_sign_in, 0); 3320 details = r.getString(R.string.network_available_sign_in_detailed, 3321 extraInfo); 3322 icon = R.drawable.stat_notify_rssi_in_range; 3323 break; 3324 } 3325 } else { 3326 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3327 + getNetworkTypeName(networkType)); 3328 return; 3329 } 3330 3331 notification.when = 0; 3332 notification.icon = icon; 3333 notification.flags = Notification.FLAG_AUTO_CANCEL; 3334 notification.tickerText = title; 3335 notification.color = mContext.getColor( 3336 com.android.internal.R.color.system_notification_accent_color); 3337 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3338 notification.contentIntent = intent; 3339 3340 try { 3341 notificationManager.notify(NOTIFICATION_ID, id, notification); 3342 } catch (NullPointerException npe) { 3343 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3344 npe.printStackTrace(); 3345 } 3346 } else { 3347 try { 3348 notificationManager.cancel(NOTIFICATION_ID, id); 3349 } catch (NullPointerException npe) { 3350 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3351 npe.printStackTrace(); 3352 } 3353 } 3354 } 3355 3356 /** Location to an updatable file listing carrier provisioning urls. 3357 * An example: 3358 * 3359 * <?xml version="1.0" encoding="utf-8"?> 3360 * <provisioningUrls> 3361 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3362 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3363 * </provisioningUrls> 3364 */ 3365 private static final String PROVISIONING_URL_PATH = 3366 "/data/misc/radio/provisioning_urls.xml"; 3367 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3368 3369 /** XML tag for root element. */ 3370 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3371 /** XML tag for individual url */ 3372 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3373 /** XML tag for redirected url */ 3374 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3375 /** XML attribute for mcc */ 3376 private static final String ATTR_MCC = "mcc"; 3377 /** XML attribute for mnc */ 3378 private static final String ATTR_MNC = "mnc"; 3379 3380 private static final int REDIRECTED_PROVISIONING = 1; 3381 private static final int PROVISIONING = 2; 3382 3383 private String getProvisioningUrlBaseFromFile(int type) { 3384 FileReader fileReader = null; 3385 XmlPullParser parser = null; 3386 Configuration config = mContext.getResources().getConfiguration(); 3387 String tagType; 3388 3389 switch (type) { 3390 case PROVISIONING: 3391 tagType = TAG_PROVISIONING_URL; 3392 break; 3393 case REDIRECTED_PROVISIONING: 3394 tagType = TAG_REDIRECTED_URL; 3395 break; 3396 default: 3397 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3398 type); 3399 } 3400 3401 try { 3402 fileReader = new FileReader(mProvisioningUrlFile); 3403 parser = Xml.newPullParser(); 3404 parser.setInput(fileReader); 3405 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3406 3407 while (true) { 3408 XmlUtils.nextElement(parser); 3409 3410 String element = parser.getName(); 3411 if (element == null) break; 3412 3413 if (element.equals(tagType)) { 3414 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3415 try { 3416 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3417 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3418 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3419 parser.next(); 3420 if (parser.getEventType() == XmlPullParser.TEXT) { 3421 return parser.getText(); 3422 } 3423 } 3424 } 3425 } catch (NumberFormatException e) { 3426 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3427 } 3428 } 3429 } 3430 return null; 3431 } catch (FileNotFoundException e) { 3432 loge("Carrier Provisioning Urls file not found"); 3433 } catch (XmlPullParserException e) { 3434 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3435 } catch (IOException e) { 3436 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3437 } finally { 3438 if (fileReader != null) { 3439 try { 3440 fileReader.close(); 3441 } catch (IOException e) {} 3442 } 3443 } 3444 return null; 3445 } 3446 3447 @Override 3448 public String getMobileRedirectedProvisioningUrl() { 3449 enforceConnectivityInternalPermission(); 3450 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3451 if (TextUtils.isEmpty(url)) { 3452 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3453 } 3454 return url; 3455 } 3456 3457 @Override 3458 public String getMobileProvisioningUrl() { 3459 enforceConnectivityInternalPermission(); 3460 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3461 if (TextUtils.isEmpty(url)) { 3462 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3463 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3464 } else { 3465 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3466 } 3467 // populate the iccid, imei and phone number in the provisioning url. 3468 if (!TextUtils.isEmpty(url)) { 3469 String phoneNumber = mTelephonyManager.getLine1Number(); 3470 if (TextUtils.isEmpty(phoneNumber)) { 3471 phoneNumber = "0000000000"; 3472 } 3473 url = String.format(url, 3474 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3475 mTelephonyManager.getDeviceId() /* IMEI */, 3476 phoneNumber /* Phone numer */); 3477 } 3478 3479 return url; 3480 } 3481 3482 @Override 3483 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3484 String action) { 3485 enforceConnectivityInternalPermission(); 3486 final long ident = Binder.clearCallingIdentity(); 3487 try { 3488 setProvNotificationVisible(visible, networkType, action); 3489 } finally { 3490 Binder.restoreCallingIdentity(ident); 3491 } 3492 } 3493 3494 @Override 3495 public void setAirplaneMode(boolean enable) { 3496 enforceConnectivityInternalPermission(); 3497 final long ident = Binder.clearCallingIdentity(); 3498 try { 3499 final ContentResolver cr = mContext.getContentResolver(); 3500 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3501 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3502 intent.putExtra("state", enable); 3503 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3504 } finally { 3505 Binder.restoreCallingIdentity(ident); 3506 } 3507 } 3508 3509 private void onUserStart(int userId) { 3510 synchronized(mVpns) { 3511 Vpn userVpn = mVpns.get(userId); 3512 if (userVpn != null) { 3513 loge("Starting user already has a VPN"); 3514 return; 3515 } 3516 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3517 mVpns.put(userId, userVpn); 3518 } 3519 } 3520 3521 private void onUserStop(int userId) { 3522 synchronized(mVpns) { 3523 Vpn userVpn = mVpns.get(userId); 3524 if (userVpn == null) { 3525 loge("Stopping user has no VPN"); 3526 return; 3527 } 3528 mVpns.delete(userId); 3529 } 3530 } 3531 3532 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3533 @Override 3534 public void onReceive(Context context, Intent intent) { 3535 final String action = intent.getAction(); 3536 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3537 if (userId == UserHandle.USER_NULL) return; 3538 3539 if (Intent.ACTION_USER_STARTING.equals(action)) { 3540 onUserStart(userId); 3541 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3542 onUserStop(userId); 3543 } 3544 } 3545 }; 3546 3547 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3548 new HashMap<Messenger, NetworkFactoryInfo>(); 3549 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3550 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3551 3552 private static class NetworkFactoryInfo { 3553 public final String name; 3554 public final Messenger messenger; 3555 public final AsyncChannel asyncChannel; 3556 3557 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3558 this.name = name; 3559 this.messenger = messenger; 3560 this.asyncChannel = asyncChannel; 3561 } 3562 } 3563 3564 /** 3565 * Tracks info about the requester. 3566 * Also used to notice when the calling process dies so we can self-expire 3567 */ 3568 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3569 static final boolean REQUEST = true; 3570 static final boolean LISTEN = false; 3571 3572 final NetworkRequest request; 3573 final PendingIntent mPendingIntent; 3574 boolean mPendingIntentSent; 3575 private final IBinder mBinder; 3576 final int mPid; 3577 final int mUid; 3578 final Messenger messenger; 3579 final boolean isRequest; 3580 3581 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3582 request = r; 3583 mPendingIntent = pi; 3584 messenger = null; 3585 mBinder = null; 3586 mPid = getCallingPid(); 3587 mUid = getCallingUid(); 3588 this.isRequest = isRequest; 3589 } 3590 3591 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3592 super(); 3593 messenger = m; 3594 request = r; 3595 mBinder = binder; 3596 mPid = getCallingPid(); 3597 mUid = getCallingUid(); 3598 this.isRequest = isRequest; 3599 mPendingIntent = null; 3600 3601 try { 3602 mBinder.linkToDeath(this, 0); 3603 } catch (RemoteException e) { 3604 binderDied(); 3605 } 3606 } 3607 3608 void unlinkDeathRecipient() { 3609 if (mBinder != null) { 3610 mBinder.unlinkToDeath(this, 0); 3611 } 3612 } 3613 3614 public void binderDied() { 3615 log("ConnectivityService NetworkRequestInfo binderDied(" + 3616 request + ", " + mBinder + ")"); 3617 releaseNetworkRequest(request); 3618 } 3619 3620 public String toString() { 3621 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3622 mPid + " for " + request + 3623 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3624 } 3625 } 3626 3627 @Override 3628 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3629 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3630 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3631 enforceNetworkRequestPermissions(networkCapabilities); 3632 enforceMeteredApnPolicy(networkCapabilities); 3633 3634 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3635 throw new IllegalArgumentException("Bad timeout specified"); 3636 } 3637 3638 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3639 nextNetworkRequestId()); 3640 if (DBG) log("requestNetwork for " + networkRequest); 3641 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3642 NetworkRequestInfo.REQUEST); 3643 3644 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3645 if (timeoutMs > 0) { 3646 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3647 nri), timeoutMs); 3648 } 3649 return networkRequest; 3650 } 3651 3652 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3653 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3654 enforceConnectivityInternalPermission(); 3655 } else { 3656 enforceChangePermission(); 3657 } 3658 } 3659 3660 @Override 3661 public boolean requestBandwidthUpdate(Network network) { 3662 enforceAccessPermission(); 3663 NetworkAgentInfo nai = null; 3664 if (network == null) { 3665 return false; 3666 } 3667 synchronized (mNetworkForNetId) { 3668 nai = mNetworkForNetId.get(network.netId); 3669 } 3670 if (nai != null) { 3671 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3672 return true; 3673 } 3674 return false; 3675 } 3676 3677 3678 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3679 // if UID is restricted, don't allow them to bring up metered APNs 3680 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3681 final int uidRules; 3682 final int uid = Binder.getCallingUid(); 3683 synchronized(mRulesLock) { 3684 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3685 } 3686 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3687 // we could silently fail or we can filter the available nets to only give 3688 // them those they have access to. Chose the more useful 3689 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3690 } 3691 } 3692 } 3693 3694 @Override 3695 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3696 PendingIntent operation) { 3697 checkNotNull(operation, "PendingIntent cannot be null."); 3698 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3699 enforceNetworkRequestPermissions(networkCapabilities); 3700 enforceMeteredApnPolicy(networkCapabilities); 3701 3702 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3703 nextNetworkRequestId()); 3704 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3705 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3706 NetworkRequestInfo.REQUEST); 3707 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3708 nri)); 3709 return networkRequest; 3710 } 3711 3712 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3713 mHandler.sendMessageDelayed( 3714 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3715 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3716 } 3717 3718 @Override 3719 public void releasePendingNetworkRequest(PendingIntent operation) { 3720 checkNotNull(operation, "PendingIntent cannot be null."); 3721 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3722 getCallingUid(), 0, operation)); 3723 } 3724 3725 // In order to implement the compatibility measure for pre-M apps that call 3726 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3727 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3728 // This ensures it has permission to do so. 3729 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3730 if (nc == null) { 3731 return false; 3732 } 3733 int[] transportTypes = nc.getTransportTypes(); 3734 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3735 return false; 3736 } 3737 try { 3738 mContext.enforceCallingOrSelfPermission( 3739 android.Manifest.permission.ACCESS_WIFI_STATE, 3740 "ConnectivityService"); 3741 } catch (SecurityException e) { 3742 return false; 3743 } 3744 return true; 3745 } 3746 3747 @Override 3748 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3749 Messenger messenger, IBinder binder) { 3750 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3751 enforceAccessPermission(); 3752 } 3753 3754 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3755 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3756 if (DBG) log("listenForNetwork for " + networkRequest); 3757 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3758 NetworkRequestInfo.LISTEN); 3759 3760 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3761 return networkRequest; 3762 } 3763 3764 @Override 3765 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3766 PendingIntent operation) { 3767 } 3768 3769 @Override 3770 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3771 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3772 0, networkRequest)); 3773 } 3774 3775 @Override 3776 public void registerNetworkFactory(Messenger messenger, String name) { 3777 enforceConnectivityInternalPermission(); 3778 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3779 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3780 } 3781 3782 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3783 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3784 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3785 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3786 } 3787 3788 @Override 3789 public void unregisterNetworkFactory(Messenger messenger) { 3790 enforceConnectivityInternalPermission(); 3791 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3792 } 3793 3794 private void handleUnregisterNetworkFactory(Messenger messenger) { 3795 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3796 if (nfi == null) { 3797 loge("Failed to find Messenger in unregisterNetworkFactory"); 3798 return; 3799 } 3800 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3801 } 3802 3803 /** 3804 * NetworkAgentInfo supporting a request by requestId. 3805 * These have already been vetted (their Capabilities satisfy the request) 3806 * and the are the highest scored network available. 3807 * the are keyed off the Requests requestId. 3808 */ 3809 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3810 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3811 new SparseArray<NetworkAgentInfo>(); 3812 3813 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3814 @GuardedBy("mNetworkForNetId") 3815 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3816 new SparseArray<NetworkAgentInfo>(); 3817 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3818 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3819 // there may not be a strict 1:1 correlation between the two. 3820 @GuardedBy("mNetworkForNetId") 3821 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3822 3823 // NetworkAgentInfo keyed off its connecting messenger 3824 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3825 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3826 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3827 new HashMap<Messenger, NetworkAgentInfo>(); 3828 3829 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3830 private final NetworkRequest mDefaultRequest; 3831 3832 // Request used to optionally keep mobile data active even when higher 3833 // priority networks like Wi-Fi are active. 3834 private final NetworkRequest mDefaultMobileDataRequest; 3835 3836 private NetworkAgentInfo getDefaultNetwork() { 3837 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3838 } 3839 3840 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3841 return nai == getDefaultNetwork(); 3842 } 3843 3844 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3845 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3846 int currentScore, NetworkMisc networkMisc) { 3847 enforceConnectivityInternalPermission(); 3848 3849 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3850 // satisfies mDefaultRequest. 3851 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3852 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3853 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3854 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3855 synchronized (this) { 3856 nai.networkMonitor.systemReady = mSystemReady; 3857 } 3858 if (DBG) log("registerNetworkAgent " + nai); 3859 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3860 return nai.network.netId; 3861 } 3862 3863 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3864 if (VDBG) log("Got NetworkAgent Messenger"); 3865 mNetworkAgentInfos.put(na.messenger, na); 3866 synchronized (mNetworkForNetId) { 3867 mNetworkForNetId.put(na.network.netId, na); 3868 } 3869 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3870 NetworkInfo networkInfo = na.networkInfo; 3871 na.networkInfo = null; 3872 updateNetworkInfo(na, networkInfo); 3873 } 3874 3875 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3876 LinkProperties newLp = networkAgent.linkProperties; 3877 int netId = networkAgent.network.netId; 3878 3879 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3880 // we do anything else, make sure its LinkProperties are accurate. 3881 if (networkAgent.clatd != null) { 3882 networkAgent.clatd.fixupLinkProperties(oldLp); 3883 } 3884 3885 updateInterfaces(newLp, oldLp, netId); 3886 updateMtu(newLp, oldLp); 3887 // TODO - figure out what to do for clat 3888// for (LinkProperties lp : newLp.getStackedLinks()) { 3889// updateMtu(lp, null); 3890// } 3891 updateTcpBufferSizes(networkAgent); 3892 3893 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3894 // In L, we used it only when the network had Internet access but provided no DNS servers. 3895 // For now, just disable it, and if disabling it doesn't break things, remove it. 3896 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3897 // NET_CAPABILITY_INTERNET); 3898 final boolean useDefaultDns = false; 3899 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3900 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3901 3902 updateClat(newLp, oldLp, networkAgent); 3903 if (isDefaultNetwork(networkAgent)) { 3904 handleApplyDefaultProxy(newLp.getHttpProxy()); 3905 } else { 3906 updateProxy(newLp, oldLp, networkAgent); 3907 } 3908 // TODO - move this check to cover the whole function 3909 if (!Objects.equals(newLp, oldLp)) { 3910 notifyIfacesChanged(); 3911 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3912 } 3913 } 3914 3915 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3916 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3917 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3918 3919 if (!wasRunningClat && shouldRunClat) { 3920 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3921 nai.clatd.start(); 3922 } else if (wasRunningClat && !shouldRunClat) { 3923 nai.clatd.stop(); 3924 } 3925 } 3926 3927 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3928 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3929 if (oldLp != null) { 3930 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3931 } else if (newLp != null) { 3932 interfaceDiff.added = newLp.getAllInterfaceNames(); 3933 } 3934 for (String iface : interfaceDiff.added) { 3935 try { 3936 if (DBG) log("Adding iface " + iface + " to network " + netId); 3937 mNetd.addInterfaceToNetwork(iface, netId); 3938 } catch (Exception e) { 3939 loge("Exception adding interface: " + e); 3940 } 3941 } 3942 for (String iface : interfaceDiff.removed) { 3943 try { 3944 if (DBG) log("Removing iface " + iface + " from network " + netId); 3945 mNetd.removeInterfaceFromNetwork(iface, netId); 3946 } catch (Exception e) { 3947 loge("Exception removing interface: " + e); 3948 } 3949 } 3950 } 3951 3952 /** 3953 * Have netd update routes from oldLp to newLp. 3954 * @return true if routes changed between oldLp and newLp 3955 */ 3956 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3957 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3958 if (oldLp != null) { 3959 routeDiff = oldLp.compareAllRoutes(newLp); 3960 } else if (newLp != null) { 3961 routeDiff.added = newLp.getAllRoutes(); 3962 } 3963 3964 // add routes before removing old in case it helps with continuous connectivity 3965 3966 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3967 for (RouteInfo route : routeDiff.added) { 3968 if (route.hasGateway()) continue; 3969 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3970 try { 3971 mNetd.addRoute(netId, route); 3972 } catch (Exception e) { 3973 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3974 loge("Exception in addRoute for non-gateway: " + e); 3975 } 3976 } 3977 } 3978 for (RouteInfo route : routeDiff.added) { 3979 if (route.hasGateway() == false) continue; 3980 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3981 try { 3982 mNetd.addRoute(netId, route); 3983 } catch (Exception e) { 3984 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3985 loge("Exception in addRoute for gateway: " + e); 3986 } 3987 } 3988 } 3989 3990 for (RouteInfo route : routeDiff.removed) { 3991 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3992 try { 3993 mNetd.removeRoute(netId, route); 3994 } catch (Exception e) { 3995 loge("Exception in removeRoute: " + e); 3996 } 3997 } 3998 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3999 } 4000 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4001 boolean flush, boolean useDefaultDns) { 4002 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4003 Collection<InetAddress> dnses = newLp.getDnsServers(); 4004 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4005 dnses = new ArrayList(); 4006 dnses.add(mDefaultDns); 4007 if (DBG) { 4008 loge("no dns provided for netId " + netId + ", so using defaults"); 4009 } 4010 } 4011 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4012 try { 4013 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4014 newLp.getDomains()); 4015 } catch (Exception e) { 4016 loge("Exception in setDnsServersForNetwork: " + e); 4017 } 4018 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4019 if (defaultNai != null && defaultNai.network.netId == netId) { 4020 setDefaultDnsSystemProperties(dnses); 4021 } 4022 flushVmDnsCache(); 4023 } else if (flush) { 4024 try { 4025 mNetd.flushNetworkDnsCache(netId); 4026 } catch (Exception e) { 4027 loge("Exception in flushNetworkDnsCache: " + e); 4028 } 4029 flushVmDnsCache(); 4030 } 4031 } 4032 4033 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4034 int last = 0; 4035 for (InetAddress dns : dnses) { 4036 ++last; 4037 String key = "net.dns" + last; 4038 String value = dns.getHostAddress(); 4039 SystemProperties.set(key, value); 4040 } 4041 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4042 String key = "net.dns" + i; 4043 SystemProperties.set(key, ""); 4044 } 4045 mNumDnsEntries = last; 4046 } 4047 4048 private void updateCapabilities(NetworkAgentInfo networkAgent, 4049 NetworkCapabilities networkCapabilities) { 4050 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4051 synchronized (networkAgent) { 4052 networkAgent.networkCapabilities = networkCapabilities; 4053 } 4054 if (networkAgent.lastValidated) { 4055 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4056 // There's no need to remove the capability if we think the network is unvalidated, 4057 // because NetworkAgents don't set the validated capability. 4058 } 4059 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 4060 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4061 } 4062 } 4063 4064 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4065 for (int i = 0; i < nai.networkRequests.size(); i++) { 4066 NetworkRequest nr = nai.networkRequests.valueAt(i); 4067 // Don't send listening requests to factories. b/17393458 4068 if (!isRequest(nr)) continue; 4069 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4070 } 4071 } 4072 4073 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4074 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4075 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4076 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4077 networkRequest); 4078 } 4079 } 4080 4081 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4082 int notificationType) { 4083 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4084 Intent intent = new Intent(); 4085 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4086 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4087 nri.mPendingIntentSent = true; 4088 sendIntent(nri.mPendingIntent, intent); 4089 } 4090 // else not handled 4091 } 4092 4093 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4094 mPendingIntentWakeLock.acquire(); 4095 try { 4096 if (DBG) log("Sending " + pendingIntent); 4097 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4098 } catch (PendingIntent.CanceledException e) { 4099 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4100 mPendingIntentWakeLock.release(); 4101 releasePendingNetworkRequest(pendingIntent); 4102 } 4103 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4104 } 4105 4106 @Override 4107 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4108 String resultData, Bundle resultExtras) { 4109 if (DBG) log("Finished sending " + pendingIntent); 4110 mPendingIntentWakeLock.release(); 4111 // Release with a delay so the receiving client has an opportunity to put in its 4112 // own request. 4113 releasePendingNetworkRequestWithDelay(pendingIntent); 4114 } 4115 4116 private void callCallbackForRequest(NetworkRequestInfo nri, 4117 NetworkAgentInfo networkAgent, int notificationType) { 4118 if (nri.messenger == null) return; // Default request has no msgr 4119 Bundle bundle = new Bundle(); 4120 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4121 new NetworkRequest(nri.request)); 4122 Message msg = Message.obtain(); 4123 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4124 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4125 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4126 } 4127 switch (notificationType) { 4128 case ConnectivityManager.CALLBACK_LOSING: { 4129 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4130 break; 4131 } 4132 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4133 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4134 new NetworkCapabilities(networkAgent.networkCapabilities)); 4135 break; 4136 } 4137 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4138 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4139 new LinkProperties(networkAgent.linkProperties)); 4140 break; 4141 } 4142 } 4143 msg.what = notificationType; 4144 msg.setData(bundle); 4145 try { 4146 if (VDBG) { 4147 log("sending notification " + notifyTypeToName(notificationType) + 4148 " for " + nri.request); 4149 } 4150 nri.messenger.send(msg); 4151 } catch (RemoteException e) { 4152 // may occur naturally in the race of binder death. 4153 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4154 } 4155 } 4156 4157 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4158 for (int i = 0; i < nai.networkRequests.size(); i++) { 4159 NetworkRequest nr = nai.networkRequests.valueAt(i); 4160 // Ignore listening requests. 4161 if (!isRequest(nr)) continue; 4162 loge("Dead network still had at least " + nr); 4163 break; 4164 } 4165 nai.asyncChannel.disconnect(); 4166 } 4167 4168 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4169 if (oldNetwork == null) { 4170 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4171 return; 4172 } 4173 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4174 teardownUnneededNetwork(oldNetwork); 4175 } 4176 4177 private void makeDefault(NetworkAgentInfo newNetwork) { 4178 if (DBG) log("Switching to new default network: " + newNetwork); 4179 setupDataActivityTracking(newNetwork); 4180 try { 4181 mNetd.setDefaultNetId(newNetwork.network.netId); 4182 } catch (Exception e) { 4183 loge("Exception setting default network :" + e); 4184 } 4185 notifyLockdownVpn(newNetwork); 4186 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4187 updateTcpBufferSizes(newNetwork); 4188 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4189 } 4190 4191 // Handles a network appearing or improving its score. 4192 // 4193 // - Evaluates all current NetworkRequests that can be 4194 // satisfied by newNetwork, and reassigns to newNetwork 4195 // any such requests for which newNetwork is the best. 4196 // 4197 // - Lingers any validated Networks that as a result are no longer 4198 // needed. A network is needed if it is the best network for 4199 // one or more NetworkRequests, or if it is a VPN. 4200 // 4201 // - Tears down newNetwork if it just became validated 4202 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4203 // 4204 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4205 // networks that have no chance (i.e. even if validated) 4206 // of becoming the highest scoring network. 4207 // 4208 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4209 // it does not remove NetworkRequests that other Networks could better satisfy. 4210 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4211 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4212 // as it performs better by a factor of the number of Networks. 4213 // 4214 // @param newNetwork is the network to be matched against NetworkRequests. 4215 // @param nascent indicates if newNetwork just became validated, in which case it should be 4216 // torn down if unneeded. 4217 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4218 // performed to tear down unvalidated networks that have no chance (i.e. even if 4219 // validated) of becoming the highest scoring network. 4220 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4221 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4222 if (!newNetwork.created) return; 4223 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4224 loge("ERROR: nascent network not validated."); 4225 } 4226 boolean keep = newNetwork.isVPN(); 4227 boolean isNewDefault = false; 4228 NetworkAgentInfo oldDefaultNetwork = null; 4229 if (DBG) log("rematching " + newNetwork.name()); 4230 // Find and migrate to this Network any NetworkRequests for 4231 // which this network is now the best. 4232 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4233 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4234 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4235 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4236 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4237 if (newNetwork == currentNetwork) { 4238 if (DBG) { 4239 log("Network " + newNetwork.name() + " was already satisfying" + 4240 " request " + nri.request.requestId + ". No change."); 4241 } 4242 keep = true; 4243 continue; 4244 } 4245 4246 // check if it satisfies the NetworkCapabilities 4247 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4248 if (newNetwork.satisfies(nri.request)) { 4249 if (!nri.isRequest) { 4250 // This is not a request, it's a callback listener. 4251 // Add it to newNetwork regardless of score. 4252 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4253 continue; 4254 } 4255 4256 // next check if it's better than any current network we're using for 4257 // this request 4258 if (VDBG) { 4259 log("currentScore = " + 4260 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4261 ", newScore = " + newNetwork.getCurrentScore()); 4262 } 4263 if (currentNetwork == null || 4264 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4265 if (currentNetwork != null) { 4266 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4267 currentNetwork.networkRequests.remove(nri.request.requestId); 4268 currentNetwork.networkLingered.add(nri.request); 4269 affectedNetworks.add(currentNetwork); 4270 } else { 4271 if (DBG) log(" accepting network in place of null"); 4272 } 4273 unlinger(newNetwork); 4274 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4275 if (!newNetwork.addRequest(nri.request)) { 4276 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4277 } 4278 addedRequests.add(nri); 4279 keep = true; 4280 // Tell NetworkFactories about the new score, so they can stop 4281 // trying to connect if they know they cannot match it. 4282 // TODO - this could get expensive if we have alot of requests for this 4283 // network. Think about if there is a way to reduce this. Push 4284 // netid->request mapping to each factory? 4285 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4286 if (mDefaultRequest.requestId == nri.request.requestId) { 4287 isNewDefault = true; 4288 oldDefaultNetwork = currentNetwork; 4289 } 4290 } 4291 } 4292 } 4293 // Linger any networks that are no longer needed. 4294 for (NetworkAgentInfo nai : affectedNetworks) { 4295 if (nai.everValidated && unneeded(nai)) { 4296 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4297 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4298 } else { 4299 unlinger(nai); 4300 } 4301 } 4302 if (keep) { 4303 if (isNewDefault) { 4304 // Notify system services that this network is up. 4305 makeDefault(newNetwork); 4306 synchronized (ConnectivityService.this) { 4307 // have a new default network, release the transition wakelock in 4308 // a second if it's held. The second pause is to allow apps 4309 // to reconnect over the new network 4310 if (mNetTransitionWakeLock.isHeld()) { 4311 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4312 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4313 mNetTransitionWakeLockSerialNumber, 0), 4314 1000); 4315 } 4316 } 4317 } 4318 4319 // do this after the default net is switched, but 4320 // before LegacyTypeTracker sends legacy broadcasts 4321 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4322 4323 if (isNewDefault) { 4324 // Maintain the illusion: since the legacy API only 4325 // understands one network at a time, we must pretend 4326 // that the current default network disconnected before 4327 // the new one connected. 4328 if (oldDefaultNetwork != null) { 4329 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4330 oldDefaultNetwork, true); 4331 } 4332 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4333 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4334 notifyLockdownVpn(newNetwork); 4335 } 4336 4337 // Notify battery stats service about this network, both the normal 4338 // interface and any stacked links. 4339 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4340 try { 4341 final IBatteryStats bs = BatteryStatsService.getService(); 4342 final int type = newNetwork.networkInfo.getType(); 4343 4344 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4345 bs.noteNetworkInterfaceType(baseIface, type); 4346 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4347 final String stackedIface = stacked.getInterfaceName(); 4348 bs.noteNetworkInterfaceType(stackedIface, type); 4349 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4350 } 4351 } catch (RemoteException ignored) { 4352 } 4353 4354 // This has to happen after the notifyNetworkCallbacks as that tickles each 4355 // ConnectivityManager instance so that legacy requests correctly bind dns 4356 // requests to this network. The legacy users are listening for this bcast 4357 // and will generally do a dns request so they can ensureRouteToHost and if 4358 // they do that before the callbacks happen they'll use the default network. 4359 // 4360 // TODO: Is there still a race here? We send the broadcast 4361 // after sending the callback, but if the app can receive the 4362 // broadcast before the callback, it might still break. 4363 // 4364 // This *does* introduce a race where if the user uses the new api 4365 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4366 // they may get old info. Reverse this after the old startUsing api is removed. 4367 // This is on top of the multiple intent sequencing referenced in the todo above. 4368 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4369 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4370 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4371 // legacy type tracker filters out repeat adds 4372 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4373 } 4374 } 4375 4376 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4377 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4378 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4379 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4380 if (newNetwork.isVPN()) { 4381 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4382 } 4383 } else if (nascent == NascentState.JUST_VALIDATED) { 4384 // Only tear down newly validated networks here. Leave unvalidated to either become 4385 // validated (and get evaluated against peers, one losing here), or get reaped (see 4386 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4387 // network. Networks that have been up for a while and are validated should be torn 4388 // down via the lingering process so communication on that network is given time to 4389 // wrap up. 4390 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4391 teardownUnneededNetwork(newNetwork); 4392 } 4393 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4394 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4395 if (!nai.everValidated && unneeded(nai)) { 4396 if (DBG) log("Reaping " + nai.name()); 4397 teardownUnneededNetwork(nai); 4398 } 4399 } 4400 } 4401 } 4402 4403 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4404 // being disconnected. 4405 // If only one Network's score or capabilities have been modified since the last time 4406 // this function was called, pass this Network in via the "changed" arugment, otherwise 4407 // pass null. 4408 // If only one Network has been changed but its NetworkCapabilities have not changed, 4409 // pass in the Network's score (from getCurrentScore()) prior to the change via 4410 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4411 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4412 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4413 // to avoid the slowness. It is not simply enough to process just "changed", for 4414 // example in the case where "changed"'s score decreases and another network should begin 4415 // satifying a NetworkRequest that "changed" currently satisfies. 4416 4417 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4418 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4419 // rematchNetworkAndRequests() handles. 4420 if (changed != null && oldScore < changed.getCurrentScore()) { 4421 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4422 ReapUnvalidatedNetworks.REAP); 4423 } else { 4424 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4425 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4426 NascentState.NOT_JUST_VALIDATED, 4427 // Only reap the last time through the loop. Reaping before all rematching 4428 // is complete could incorrectly teardown a network that hasn't yet been 4429 // rematched. 4430 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4431 : ReapUnvalidatedNetworks.REAP); 4432 } 4433 } 4434 } 4435 4436 private void updateInetCondition(NetworkAgentInfo nai) { 4437 // Don't bother updating until we've graduated to validated at least once. 4438 if (!nai.everValidated) return; 4439 // For now only update icons for default connection. 4440 // TODO: Update WiFi and cellular icons separately. b/17237507 4441 if (!isDefaultNetwork(nai)) return; 4442 4443 int newInetCondition = nai.lastValidated ? 100 : 0; 4444 // Don't repeat publish. 4445 if (newInetCondition == mDefaultInetConditionPublished) return; 4446 4447 mDefaultInetConditionPublished = newInetCondition; 4448 sendInetConditionBroadcast(nai.networkInfo); 4449 } 4450 4451 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4452 if (mLockdownTracker != null) { 4453 if (nai != null && nai.isVPN()) { 4454 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4455 } else { 4456 mLockdownTracker.onNetworkInfoChanged(); 4457 } 4458 } 4459 } 4460 4461 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4462 NetworkInfo.State state = newInfo.getState(); 4463 NetworkInfo oldInfo = null; 4464 synchronized (networkAgent) { 4465 oldInfo = networkAgent.networkInfo; 4466 networkAgent.networkInfo = newInfo; 4467 } 4468 notifyLockdownVpn(networkAgent); 4469 4470 if (oldInfo != null && oldInfo.getState() == state) { 4471 if (VDBG) log("ignoring duplicate network state non-change"); 4472 return; 4473 } 4474 if (DBG) { 4475 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4476 (oldInfo == null ? "null" : oldInfo.getState()) + 4477 " to " + state); 4478 } 4479 4480 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4481 try { 4482 // This should never fail. Specifying an already in use NetID will cause failure. 4483 if (networkAgent.isVPN()) { 4484 mNetd.createVirtualNetwork(networkAgent.network.netId, 4485 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4486 (networkAgent.networkMisc == null || 4487 !networkAgent.networkMisc.allowBypass)); 4488 } else { 4489 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4490 } 4491 } catch (Exception e) { 4492 loge("Error creating network " + networkAgent.network.netId + ": " 4493 + e.getMessage()); 4494 return; 4495 } 4496 networkAgent.created = true; 4497 updateLinkProperties(networkAgent, null); 4498 notifyIfacesChanged(); 4499 4500 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4501 scheduleUnvalidatedPrompt(networkAgent); 4502 4503 if (networkAgent.isVPN()) { 4504 // Temporarily disable the default proxy (not global). 4505 synchronized (mProxyLock) { 4506 if (!mDefaultProxyDisabled) { 4507 mDefaultProxyDisabled = true; 4508 if (mGlobalProxy == null && mDefaultProxy != null) { 4509 sendProxyBroadcast(null); 4510 } 4511 } 4512 } 4513 // TODO: support proxy per network. 4514 } 4515 4516 // Consider network even though it is not yet validated. 4517 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4518 ReapUnvalidatedNetworks.REAP); 4519 4520 // This has to happen after matching the requests, because callbacks are just requests. 4521 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4522 } else if (state == NetworkInfo.State.DISCONNECTED || 4523 state == NetworkInfo.State.SUSPENDED) { 4524 networkAgent.asyncChannel.disconnect(); 4525 if (networkAgent.isVPN()) { 4526 synchronized (mProxyLock) { 4527 if (mDefaultProxyDisabled) { 4528 mDefaultProxyDisabled = false; 4529 if (mGlobalProxy == null && mDefaultProxy != null) { 4530 sendProxyBroadcast(mDefaultProxy); 4531 } 4532 } 4533 } 4534 } 4535 } 4536 } 4537 4538 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4539 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4540 if (score < 0) { 4541 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4542 "). Bumping score to min of 0"); 4543 score = 0; 4544 } 4545 4546 final int oldScore = nai.getCurrentScore(); 4547 nai.setCurrentScore(score); 4548 4549 rematchAllNetworksAndRequests(nai, oldScore); 4550 4551 sendUpdatedScoreToFactories(nai); 4552 } 4553 4554 // notify only this one new request of the current state 4555 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4556 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4557 // TODO - read state from monitor to decide what to send. 4558// if (nai.networkMonitor.isLingering()) { 4559// notifyType = NetworkCallbacks.LOSING; 4560// } else if (nai.networkMonitor.isEvaluating()) { 4561// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4562// } 4563 if (nri.mPendingIntent == null) { 4564 callCallbackForRequest(nri, nai, notifyType); 4565 } else { 4566 sendPendingIntentForRequest(nri, nai, notifyType); 4567 } 4568 } 4569 4570 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4571 // The NetworkInfo we actually send out has no bearing on the real 4572 // state of affairs. For example, if the default connection is mobile, 4573 // and a request for HIPRI has just gone away, we need to pretend that 4574 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4575 // the state to DISCONNECTED, even though the network is of type MOBILE 4576 // and is still connected. 4577 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4578 info.setType(type); 4579 if (connected) { 4580 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4581 sendConnectedBroadcast(info); 4582 } else { 4583 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4584 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4585 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4586 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4587 if (info.isFailover()) { 4588 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4589 nai.networkInfo.setFailover(false); 4590 } 4591 if (info.getReason() != null) { 4592 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4593 } 4594 if (info.getExtraInfo() != null) { 4595 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4596 } 4597 NetworkAgentInfo newDefaultAgent = null; 4598 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4599 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4600 if (newDefaultAgent != null) { 4601 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4602 newDefaultAgent.networkInfo); 4603 } else { 4604 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4605 } 4606 } 4607 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4608 mDefaultInetConditionPublished); 4609 sendStickyBroadcast(intent); 4610 if (newDefaultAgent != null) { 4611 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4612 } 4613 } 4614 } 4615 4616 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4617 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4618 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4619 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4620 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4621 if (VDBG) log(" sending notification for " + nr); 4622 if (nri.mPendingIntent == null) { 4623 callCallbackForRequest(nri, networkAgent, notifyType); 4624 } else { 4625 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4626 } 4627 } 4628 } 4629 4630 private String notifyTypeToName(int notifyType) { 4631 switch (notifyType) { 4632 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4633 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4634 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4635 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4636 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4637 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4638 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4639 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4640 } 4641 return "UNKNOWN"; 4642 } 4643 4644 /** 4645 * Notify other system services that set of active ifaces has changed. 4646 */ 4647 private void notifyIfacesChanged() { 4648 try { 4649 mStatsService.forceUpdateIfaces(); 4650 } catch (Exception ignored) { 4651 } 4652 } 4653 4654 @Override 4655 public boolean addVpnAddress(String address, int prefixLength) { 4656 throwIfLockdownEnabled(); 4657 int user = UserHandle.getUserId(Binder.getCallingUid()); 4658 synchronized (mVpns) { 4659 return mVpns.get(user).addAddress(address, prefixLength); 4660 } 4661 } 4662 4663 @Override 4664 public boolean removeVpnAddress(String address, int prefixLength) { 4665 throwIfLockdownEnabled(); 4666 int user = UserHandle.getUserId(Binder.getCallingUid()); 4667 synchronized (mVpns) { 4668 return mVpns.get(user).removeAddress(address, prefixLength); 4669 } 4670 } 4671 4672 @Override 4673 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4674 throwIfLockdownEnabled(); 4675 int user = UserHandle.getUserId(Binder.getCallingUid()); 4676 boolean success; 4677 synchronized (mVpns) { 4678 success = mVpns.get(user).setUnderlyingNetworks(networks); 4679 } 4680 if (success) { 4681 notifyIfacesChanged(); 4682 } 4683 return success; 4684 } 4685 4686 @Override 4687 public void factoryReset() { 4688 enforceConnectivityInternalPermission(); 4689 4690 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4691 return; 4692 } 4693 4694 final int userId = UserHandle.getCallingUserId(); 4695 4696 // Turn airplane mode off 4697 setAirplaneMode(false); 4698 4699 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4700 // Untether 4701 for (String tether : getTetheredIfaces()) { 4702 untether(tether); 4703 } 4704 } 4705 4706 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4707 // Turn VPN off 4708 VpnConfig vpnConfig = getVpnConfig(userId); 4709 if (vpnConfig != null) { 4710 if (vpnConfig.legacy) { 4711 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4712 } else { 4713 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4714 // in the future without user intervention. 4715 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4716 4717 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4718 } 4719 } 4720 } 4721 } 4722} 4723