ConnectivityService.java revision 06f46cb32067572f25721ebe62fefd29cc34c7f0
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.Inet6Address; 140import java.net.InetAddress; 141import java.net.UnknownHostException; 142import java.util.ArrayList; 143import java.util.Arrays; 144import java.util.Collection; 145import java.util.Collections; 146import java.util.HashMap; 147import java.util.HashSet; 148import java.util.Iterator; 149import java.util.List; 150import java.util.Map; 151import java.util.Objects; 152import java.util.concurrent.atomic.AtomicInteger; 153 154/** 155 * @hide 156 */ 157public class ConnectivityService extends IConnectivityManager.Stub 158 implements PendingIntent.OnFinished { 159 private static final String TAG = "ConnectivityService"; 160 161 private static final boolean DBG = true; 162 private static final boolean VDBG = false; 163 164 private static final boolean LOGD_RULES = false; 165 166 // TODO: create better separation between radio types and network types 167 168 // how long to wait before switching back to a radio's default network 169 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 170 // system property that can override the above value 171 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 172 "android.telephony.apn-restore"; 173 174 // How long to wait before putting up a "This network doesn't have an Internet connection, 175 // connect anyway?" dialog after the user selects a network that doesn't validate. 176 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 177 178 // How long to delay to removal of a pending intent based request. 179 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 180 private final int mReleasePendingIntentDelayMs; 181 182 private Tethering mTethering; 183 184 private final PermissionMonitor mPermissionMonitor; 185 186 private KeyStore mKeyStore; 187 188 @GuardedBy("mVpns") 189 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 190 191 private boolean mLockdownEnabled; 192 private LockdownVpnTracker mLockdownTracker; 193 194 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 195 private Object mRulesLock = new Object(); 196 /** Currently active network rules by UID. */ 197 private SparseIntArray mUidRules = new SparseIntArray(); 198 /** Set of ifaces that are costly. */ 199 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 200 201 final private Context mContext; 202 private int mNetworkPreference; 203 // 0 is full bad, 100 is full good 204 private int mDefaultInetConditionPublished = 0; 205 206 private int mNumDnsEntries; 207 208 private boolean mTestMode; 209 private static ConnectivityService sServiceInstance; 210 211 private INetworkManagementService mNetd; 212 private INetworkStatsService mStatsService; 213 private INetworkPolicyManager mPolicyManager; 214 215 private String mCurrentTcpBufferSizes; 216 217 private static final int ENABLED = 1; 218 private static final int DISABLED = 0; 219 220 // Arguments to rematchNetworkAndRequests() 221 private enum NascentState { 222 // Indicates a network was just validated for the first time. If the network is found to 223 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 224 JUST_VALIDATED, 225 // Indicates a network was not validated for the first time immediately prior to this call. 226 NOT_JUST_VALIDATED 227 }; 228 private enum ReapUnvalidatedNetworks { 229 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 230 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 231 // known that there may be unvalidated networks that could potentially be reaped, and when 232 // all networks have been rematched against all NetworkRequests. 233 REAP, 234 // Don't reap unvalidated networks. This should be passed when it's known that there are 235 // no unvalidated networks that could potentially be reaped, and when some networks have 236 // not yet been rematched against all NetworkRequests. 237 DONT_REAP 238 }; 239 240 /** 241 * used internally to change our mobile data enabled flag 242 */ 243 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 244 245 /** 246 * used internally to clear a wakelock when transitioning 247 * from one net to another. Clear happens when we get a new 248 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 249 * after a timeout if no network is found (typically 1 min). 250 */ 251 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 252 253 /** 254 * used internally to reload global proxy settings 255 */ 256 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 257 258 /** 259 * used internally to send a sticky broadcast delayed. 260 */ 261 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 262 263 /** 264 * PAC manager has received new port. 265 */ 266 private static final int EVENT_PROXY_HAS_CHANGED = 16; 267 268 /** 269 * used internally when registering NetworkFactories 270 * obj = NetworkFactoryInfo 271 */ 272 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 273 274 /** 275 * used internally when registering NetworkAgents 276 * obj = Messenger 277 */ 278 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 279 280 /** 281 * used to add a network request 282 * includes a NetworkRequestInfo 283 */ 284 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 285 286 /** 287 * indicates a timeout period is over - check if we had a network yet or not 288 * and if not, call the timeout calback (but leave the request live until they 289 * cancel it. 290 * includes a NetworkRequestInfo 291 */ 292 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 293 294 /** 295 * used to add a network listener - no request 296 * includes a NetworkRequestInfo 297 */ 298 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 299 300 /** 301 * used to remove a network request, either a listener or a real request 302 * arg1 = UID of caller 303 * obj = NetworkRequest 304 */ 305 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 306 307 /** 308 * used internally when registering NetworkFactories 309 * obj = Messenger 310 */ 311 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 312 313 /** 314 * used internally to expire a wakelock when transitioning 315 * from one net to another. Expire happens when we fail to find 316 * a new network (typically after 1 minute) - 317 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 318 * a replacement network. 319 */ 320 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 321 322 /** 323 * Used internally to indicate the system is ready. 324 */ 325 private static final int EVENT_SYSTEM_READY = 25; 326 327 /** 328 * used to add a network request with a pending intent 329 * obj = NetworkRequestInfo 330 */ 331 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 332 333 /** 334 * used to remove a pending intent and its associated network request. 335 * arg1 = UID of caller 336 * obj = PendingIntent 337 */ 338 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 339 340 /** 341 * used to specify whether a network should be used even if unvalidated. 342 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 343 * arg2 = whether to remember this choice in the future (1 or 0) 344 * obj = network 345 */ 346 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 347 348 /** 349 * used to ask the user to confirm a connection to an unvalidated network. 350 * obj = network 351 */ 352 private static final int EVENT_PROMPT_UNVALIDATED = 29; 353 354 /** 355 * used internally to (re)configure mobile data always-on settings. 356 */ 357 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 358 359 /** 360 * used to add a network listener with a pending intent 361 * obj = NetworkRequestInfo 362 */ 363 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 364 365 /** Handler used for internal events. */ 366 final private InternalHandler mHandler; 367 /** Handler used for incoming {@link NetworkStateTracker} events. */ 368 final private NetworkStateTrackerHandler mTrackerHandler; 369 370 private boolean mSystemReady; 371 private Intent mInitialBroadcast; 372 373 private PowerManager.WakeLock mNetTransitionWakeLock; 374 private String mNetTransitionWakeLockCausedBy = ""; 375 private int mNetTransitionWakeLockSerialNumber; 376 private int mNetTransitionWakeLockTimeout; 377 private final PowerManager.WakeLock mPendingIntentWakeLock; 378 379 private InetAddress mDefaultDns; 380 381 // used in DBG mode to track inet condition reports 382 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 383 private ArrayList mInetLog; 384 385 // track the current default http proxy - tell the world if we get a new one (real change) 386 private volatile ProxyInfo mDefaultProxy = null; 387 private Object mProxyLock = new Object(); 388 private boolean mDefaultProxyDisabled = false; 389 390 // track the global proxy. 391 private ProxyInfo mGlobalProxy = null; 392 393 private PacManager mPacManager = null; 394 395 final private SettingsObserver mSettingsObserver; 396 397 private UserManager mUserManager; 398 399 NetworkConfig[] mNetConfigs; 400 int mNetworksDefined; 401 402 // the set of network types that can only be enabled by system/sig apps 403 List mProtectedNetworks; 404 405 private DataConnectionStats mDataConnectionStats; 406 407 TelephonyManager mTelephonyManager; 408 409 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 410 private final static int MIN_NET_ID = 100; // some reserved marks 411 private final static int MAX_NET_ID = 65535; 412 private int mNextNetId = MIN_NET_ID; 413 414 // sequence number of NetworkRequests 415 private int mNextNetworkRequestId = 1; 416 417 /** 418 * Implements support for the legacy "one network per network type" model. 419 * 420 * We used to have a static array of NetworkStateTrackers, one for each 421 * network type, but that doesn't work any more now that we can have, 422 * for example, more that one wifi network. This class stores all the 423 * NetworkAgentInfo objects that support a given type, but the legacy 424 * API will only see the first one. 425 * 426 * It serves two main purposes: 427 * 428 * 1. Provide information about "the network for a given type" (since this 429 * API only supports one). 430 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 431 * the first network for a given type changes, or if the default network 432 * changes. 433 */ 434 private class LegacyTypeTracker { 435 436 private static final boolean DBG = true; 437 private static final boolean VDBG = false; 438 private static final String TAG = "CSLegacyTypeTracker"; 439 440 /** 441 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 442 * Each list holds references to all NetworkAgentInfos that are used to 443 * satisfy requests for that network type. 444 * 445 * This array is built out at startup such that an unsupported network 446 * doesn't get an ArrayList instance, making this a tristate: 447 * unsupported, supported but not active and active. 448 * 449 * The actual lists are populated when we scan the network types that 450 * are supported on this device. 451 */ 452 private ArrayList<NetworkAgentInfo> mTypeLists[]; 453 454 public LegacyTypeTracker() { 455 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 456 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 457 } 458 459 public void addSupportedType(int type) { 460 if (mTypeLists[type] != null) { 461 throw new IllegalStateException( 462 "legacy list for type " + type + "already initialized"); 463 } 464 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 465 } 466 467 public boolean isTypeSupported(int type) { 468 return isNetworkTypeValid(type) && mTypeLists[type] != null; 469 } 470 471 public NetworkAgentInfo getNetworkForType(int type) { 472 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 473 return mTypeLists[type].get(0); 474 } else { 475 return null; 476 } 477 } 478 479 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 480 boolean isDefaultNetwork) { 481 if (DBG) { 482 log("Sending " + (connected ? "connected" : "disconnected") + 483 " broadcast for type " + type + " " + nai.name() + 484 " isDefaultNetwork=" + isDefaultNetwork); 485 } 486 } 487 488 /** Adds the given network to the specified legacy type list. */ 489 public void add(int type, NetworkAgentInfo nai) { 490 if (!isTypeSupported(type)) { 491 return; // Invalid network type. 492 } 493 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 494 495 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 496 if (list.contains(nai)) { 497 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 498 return; 499 } 500 501 list.add(nai); 502 503 // Send a broadcast if this is the first network of its type or if it's the default. 504 final boolean isDefaultNetwork = isDefaultNetwork(nai); 505 if (list.size() == 1 || isDefaultNetwork) { 506 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 507 sendLegacyNetworkBroadcast(nai, true, type); 508 } 509 } 510 511 /** Removes the given network from the specified legacy type list. */ 512 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 513 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 514 if (list == null || list.isEmpty()) { 515 return; 516 } 517 518 final boolean wasFirstNetwork = list.get(0).equals(nai); 519 520 if (!list.remove(nai)) { 521 return; 522 } 523 524 if (wasFirstNetwork || wasDefault) { 525 maybeLogBroadcast(nai, false, type, wasDefault); 526 sendLegacyNetworkBroadcast(nai, false, type); 527 } 528 529 if (!list.isEmpty() && wasFirstNetwork) { 530 if (DBG) log("Other network available for type " + type + 531 ", sending connected broadcast"); 532 final NetworkAgentInfo replacement = list.get(0); 533 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 534 sendLegacyNetworkBroadcast(replacement, false, type); 535 } 536 } 537 538 /** Removes the given network from all legacy type lists. */ 539 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 540 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 541 for (int type = 0; type < mTypeLists.length; type++) { 542 remove(type, nai, wasDefault); 543 } 544 } 545 546 private String naiToString(NetworkAgentInfo nai) { 547 String name = (nai != null) ? nai.name() : "null"; 548 String state = (nai.networkInfo != null) ? 549 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 550 "???/???"; 551 return name + " " + state; 552 } 553 554 public void dump(IndentingPrintWriter pw) { 555 pw.println("mLegacyTypeTracker:"); 556 pw.increaseIndent(); 557 pw.print("Supported types:"); 558 for (int type = 0; type < mTypeLists.length; type++) { 559 if (mTypeLists[type] != null) pw.print(" " + type); 560 } 561 pw.println(); 562 pw.println("Current state:"); 563 pw.increaseIndent(); 564 for (int type = 0; type < mTypeLists.length; type++) { 565 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 566 for (NetworkAgentInfo nai : mTypeLists[type]) { 567 pw.println(type + " " + naiToString(nai)); 568 } 569 } 570 pw.decreaseIndent(); 571 pw.decreaseIndent(); 572 pw.println(); 573 } 574 575 // This class needs its own log method because it has a different TAG. 576 private void log(String s) { 577 Slog.d(TAG, s); 578 } 579 580 } 581 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 582 583 public ConnectivityService(Context context, INetworkManagementService netManager, 584 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 585 if (DBG) log("ConnectivityService starting up"); 586 587 mDefaultRequest = createInternetRequestForTransport(-1); 588 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 589 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 590 591 mDefaultMobileDataRequest = createInternetRequestForTransport( 592 NetworkCapabilities.TRANSPORT_CELLULAR); 593 594 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 595 handlerThread.start(); 596 mHandler = new InternalHandler(handlerThread.getLooper()); 597 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 598 599 // setup our unique device name 600 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 601 String id = Settings.Secure.getString(context.getContentResolver(), 602 Settings.Secure.ANDROID_ID); 603 if (id != null && id.length() > 0) { 604 String name = new String("android-").concat(id); 605 SystemProperties.set("net.hostname", name); 606 } 607 } 608 609 // read our default dns server ip 610 String dns = Settings.Global.getString(context.getContentResolver(), 611 Settings.Global.DEFAULT_DNS_SERVER); 612 if (dns == null || dns.length() == 0) { 613 dns = context.getResources().getString( 614 com.android.internal.R.string.config_default_dns_server); 615 } 616 try { 617 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 618 } catch (IllegalArgumentException e) { 619 loge("Error setting defaultDns using " + dns); 620 } 621 622 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 623 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 624 625 mContext = checkNotNull(context, "missing Context"); 626 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 627 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 628 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 629 mKeyStore = KeyStore.getInstance(); 630 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 631 632 try { 633 mPolicyManager.registerListener(mPolicyListener); 634 } catch (RemoteException e) { 635 // ouch, no rules updates means some processes may never get network 636 loge("unable to register INetworkPolicyListener" + e.toString()); 637 } 638 639 final PowerManager powerManager = (PowerManager) context.getSystemService( 640 Context.POWER_SERVICE); 641 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 642 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 643 com.android.internal.R.integer.config_networkTransitionTimeout); 644 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 645 646 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 647 648 // TODO: What is the "correct" way to do determine if this is a wifi only device? 649 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 650 log("wifiOnly=" + wifiOnly); 651 String[] naStrings = context.getResources().getStringArray( 652 com.android.internal.R.array.networkAttributes); 653 for (String naString : naStrings) { 654 try { 655 NetworkConfig n = new NetworkConfig(naString); 656 if (VDBG) log("naString=" + naString + " config=" + n); 657 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 658 loge("Error in networkAttributes - ignoring attempt to define type " + 659 n.type); 660 continue; 661 } 662 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 663 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 664 n.type); 665 continue; 666 } 667 if (mNetConfigs[n.type] != null) { 668 loge("Error in networkAttributes - ignoring attempt to redefine type " + 669 n.type); 670 continue; 671 } 672 mLegacyTypeTracker.addSupportedType(n.type); 673 674 mNetConfigs[n.type] = n; 675 mNetworksDefined++; 676 } catch(Exception e) { 677 // ignore it - leave the entry null 678 } 679 } 680 681 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 682 if (mNetConfigs[TYPE_VPN] == null) { 683 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 684 // don't need to add TYPE_VPN to mNetConfigs. 685 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 686 mNetworksDefined++; // used only in the log() statement below. 687 } 688 689 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 690 691 mProtectedNetworks = new ArrayList<Integer>(); 692 int[] protectedNetworks = context.getResources().getIntArray( 693 com.android.internal.R.array.config_protectedNetworks); 694 for (int p : protectedNetworks) { 695 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 696 mProtectedNetworks.add(p); 697 } else { 698 if (DBG) loge("Ignoring protectedNetwork " + p); 699 } 700 } 701 702 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 703 && SystemProperties.get("ro.build.type").equals("eng"); 704 705 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 706 707 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 708 709 //set up the listener for user state for creating user VPNs 710 IntentFilter intentFilter = new IntentFilter(); 711 intentFilter.addAction(Intent.ACTION_USER_STARTING); 712 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 713 mContext.registerReceiverAsUser( 714 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 715 716 try { 717 mNetd.registerObserver(mTethering); 718 mNetd.registerObserver(mDataActivityObserver); 719 } catch (RemoteException e) { 720 loge("Error registering observer :" + e); 721 } 722 723 if (DBG) { 724 mInetLog = new ArrayList(); 725 } 726 727 mSettingsObserver = new SettingsObserver(mContext, mHandler); 728 registerSettingsCallbacks(); 729 730 mDataConnectionStats = new DataConnectionStats(mContext); 731 mDataConnectionStats.startMonitoring(); 732 733 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 734 735 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 736 } 737 738 private NetworkRequest createInternetRequestForTransport(int transportType) { 739 NetworkCapabilities netCap = new NetworkCapabilities(); 740 netCap.addCapability(NET_CAPABILITY_INTERNET); 741 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 742 if (transportType > -1) { 743 netCap.addTransportType(transportType); 744 } 745 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 746 } 747 748 private void handleMobileDataAlwaysOn() { 749 final boolean enable = (Settings.Global.getInt( 750 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 751 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 752 if (enable == isEnabled) { 753 return; // Nothing to do. 754 } 755 756 if (enable) { 757 handleRegisterNetworkRequest(new NetworkRequestInfo( 758 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 759 } else { 760 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 761 } 762 } 763 764 private void registerSettingsCallbacks() { 765 // Watch for global HTTP proxy changes. 766 mSettingsObserver.observe( 767 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 768 EVENT_APPLY_GLOBAL_HTTP_PROXY); 769 770 // Watch for whether or not to keep mobile data always on. 771 mSettingsObserver.observe( 772 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 773 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 774 } 775 776 private synchronized int nextNetworkRequestId() { 777 return mNextNetworkRequestId++; 778 } 779 780 @VisibleForTesting 781 protected int reserveNetId() { 782 synchronized (mNetworkForNetId) { 783 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 784 int netId = mNextNetId; 785 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 786 // Make sure NetID unused. http://b/16815182 787 if (!mNetIdInUse.get(netId)) { 788 mNetIdInUse.put(netId, true); 789 return netId; 790 } 791 } 792 } 793 throw new IllegalStateException("No free netIds"); 794 } 795 796 private NetworkState getFilteredNetworkState(int networkType, int uid) { 797 NetworkInfo info = null; 798 LinkProperties lp = null; 799 NetworkCapabilities nc = null; 800 Network network = null; 801 String subscriberId = null; 802 803 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 804 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 805 if (nai != null) { 806 synchronized (nai) { 807 info = new NetworkInfo(nai.networkInfo); 808 lp = new LinkProperties(nai.linkProperties); 809 nc = new NetworkCapabilities(nai.networkCapabilities); 810 // Network objects are outwardly immutable so there is no point to duplicating. 811 // Duplicating also precludes sharing socket factories and connection pools. 812 network = nai.network; 813 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 814 } 815 info.setType(networkType); 816 } else { 817 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 818 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 819 info.setIsAvailable(true); 820 lp = new LinkProperties(); 821 nc = new NetworkCapabilities(); 822 network = null; 823 } 824 info = getFilteredNetworkInfo(info, lp, uid); 825 } 826 827 return new NetworkState(info, lp, nc, network, subscriberId, null); 828 } 829 830 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 831 if (network == null) { 832 return null; 833 } 834 synchronized (mNetworkForNetId) { 835 return mNetworkForNetId.get(network.netId); 836 } 837 }; 838 839 private Network[] getVpnUnderlyingNetworks(int uid) { 840 if (!mLockdownEnabled) { 841 int user = UserHandle.getUserId(uid); 842 synchronized (mVpns) { 843 Vpn vpn = mVpns.get(user); 844 if (vpn != null && vpn.appliesToUid(uid)) { 845 return vpn.getUnderlyingNetworks(); 846 } 847 } 848 } 849 return null; 850 } 851 852 private NetworkState getUnfilteredActiveNetworkState(int uid) { 853 NetworkInfo info = null; 854 LinkProperties lp = null; 855 NetworkCapabilities nc = null; 856 Network network = null; 857 String subscriberId = null; 858 859 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 860 861 final Network[] networks = getVpnUnderlyingNetworks(uid); 862 if (networks != null) { 863 // getUnderlyingNetworks() returns: 864 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 865 // empty array => the VPN explicitly said "no default network". 866 // non-empty array => the VPN specified one or more default networks; we use the 867 // first one. 868 if (networks.length > 0) { 869 nai = getNetworkAgentInfoForNetwork(networks[0]); 870 } else { 871 nai = null; 872 } 873 } 874 875 if (nai != null) { 876 synchronized (nai) { 877 info = new NetworkInfo(nai.networkInfo); 878 lp = new LinkProperties(nai.linkProperties); 879 nc = new NetworkCapabilities(nai.networkCapabilities); 880 // Network objects are outwardly immutable so there is no point to duplicating. 881 // Duplicating also precludes sharing socket factories and connection pools. 882 network = nai.network; 883 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 884 } 885 } 886 887 return new NetworkState(info, lp, nc, network, subscriberId, null); 888 } 889 890 /** 891 * Check if UID should be blocked from using the network with the given LinkProperties. 892 */ 893 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 894 final boolean networkCostly; 895 final int uidRules; 896 897 final String iface = (lp == null ? "" : lp.getInterfaceName()); 898 synchronized (mRulesLock) { 899 networkCostly = mMeteredIfaces.contains(iface); 900 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 901 } 902 903 if ((uidRules & RULE_REJECT_ALL) != 0 904 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 905 return true; 906 } 907 908 // no restrictive rules; network is visible 909 return false; 910 } 911 912 /** 913 * Return a filtered {@link NetworkInfo}, potentially marked 914 * {@link DetailedState#BLOCKED} based on 915 * {@link #isNetworkWithLinkPropertiesBlocked}. 916 */ 917 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 918 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 919 // network is blocked; clone and override state 920 info = new NetworkInfo(info); 921 info.setDetailedState(DetailedState.BLOCKED, null, null); 922 if (VDBG) { 923 log("returning Blocked NetworkInfo for ifname=" + 924 lp.getInterfaceName() + ", uid=" + uid); 925 } 926 } 927 if (info != null && mLockdownTracker != null) { 928 info = mLockdownTracker.augmentNetworkInfo(info); 929 if (VDBG) log("returning Locked NetworkInfo"); 930 } 931 return info; 932 } 933 934 /** 935 * Return NetworkInfo for the active (i.e., connected) network interface. 936 * It is assumed that at most one network is active at a time. If more 937 * than one is active, it is indeterminate which will be returned. 938 * @return the info for the active network, or {@code null} if none is 939 * active 940 */ 941 @Override 942 public NetworkInfo getActiveNetworkInfo() { 943 enforceAccessPermission(); 944 final int uid = Binder.getCallingUid(); 945 NetworkState state = getUnfilteredActiveNetworkState(uid); 946 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 947 } 948 949 @Override 950 public Network getActiveNetwork() { 951 enforceAccessPermission(); 952 final int uid = Binder.getCallingUid(); 953 final int user = UserHandle.getUserId(uid); 954 int vpnNetId = NETID_UNSET; 955 synchronized (mVpns) { 956 final Vpn vpn = mVpns.get(user); 957 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 958 } 959 NetworkAgentInfo nai; 960 if (vpnNetId != NETID_UNSET) { 961 synchronized (mNetworkForNetId) { 962 nai = mNetworkForNetId.get(vpnNetId); 963 } 964 if (nai != null) return nai.network; 965 } 966 nai = getDefaultNetwork(); 967 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 968 return nai != null ? nai.network : null; 969 } 970 971 public NetworkInfo getActiveNetworkInfoUnfiltered() { 972 enforceAccessPermission(); 973 final int uid = Binder.getCallingUid(); 974 NetworkState state = getUnfilteredActiveNetworkState(uid); 975 return state.networkInfo; 976 } 977 978 @Override 979 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 980 enforceConnectivityInternalPermission(); 981 NetworkState state = getUnfilteredActiveNetworkState(uid); 982 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 983 } 984 985 @Override 986 public NetworkInfo getNetworkInfo(int networkType) { 987 enforceAccessPermission(); 988 final int uid = Binder.getCallingUid(); 989 if (getVpnUnderlyingNetworks(uid) != null) { 990 // A VPN is active, so we may need to return one of its underlying networks. This 991 // information is not available in LegacyTypeTracker, so we have to get it from 992 // getUnfilteredActiveNetworkState. 993 NetworkState state = getUnfilteredActiveNetworkState(uid); 994 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 995 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 996 } 997 } 998 NetworkState state = getFilteredNetworkState(networkType, uid); 999 return state.networkInfo; 1000 } 1001 1002 @Override 1003 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1004 enforceAccessPermission(); 1005 final int uid = Binder.getCallingUid(); 1006 NetworkInfo info = null; 1007 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1008 if (nai != null) { 1009 synchronized (nai) { 1010 info = new NetworkInfo(nai.networkInfo); 1011 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1012 } 1013 } 1014 return info; 1015 } 1016 1017 @Override 1018 public NetworkInfo[] getAllNetworkInfo() { 1019 enforceAccessPermission(); 1020 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1021 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1022 networkType++) { 1023 NetworkInfo info = getNetworkInfo(networkType); 1024 if (info != null) { 1025 result.add(info); 1026 } 1027 } 1028 return result.toArray(new NetworkInfo[result.size()]); 1029 } 1030 1031 @Override 1032 public Network getNetworkForType(int networkType) { 1033 enforceAccessPermission(); 1034 final int uid = Binder.getCallingUid(); 1035 NetworkState state = getFilteredNetworkState(networkType, uid); 1036 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1037 return state.network; 1038 } 1039 return null; 1040 } 1041 1042 @Override 1043 public Network[] getAllNetworks() { 1044 enforceAccessPermission(); 1045 synchronized (mNetworkForNetId) { 1046 final Network[] result = new Network[mNetworkForNetId.size()]; 1047 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1048 result[i] = mNetworkForNetId.valueAt(i).network; 1049 } 1050 return result; 1051 } 1052 } 1053 1054 @Override 1055 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1056 // The basic principle is: if an app's traffic could possibly go over a 1057 // network, without the app doing anything multinetwork-specific, 1058 // (hence, by "default"), then include that network's capabilities in 1059 // the array. 1060 // 1061 // In the normal case, app traffic only goes over the system's default 1062 // network connection, so that's the only network returned. 1063 // 1064 // With a VPN in force, some app traffic may go into the VPN, and thus 1065 // over whatever underlying networks the VPN specifies, while other app 1066 // traffic may go over the system default network (e.g.: a split-tunnel 1067 // VPN, or an app disallowed by the VPN), so the set of networks 1068 // returned includes the VPN's underlying networks and the system 1069 // default. 1070 enforceAccessPermission(); 1071 1072 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1073 1074 NetworkAgentInfo nai = getDefaultNetwork(); 1075 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1076 if (nc != null) { 1077 result.put(nai.network, nc); 1078 } 1079 1080 if (!mLockdownEnabled) { 1081 synchronized (mVpns) { 1082 Vpn vpn = mVpns.get(userId); 1083 if (vpn != null) { 1084 Network[] networks = vpn.getUnderlyingNetworks(); 1085 if (networks != null) { 1086 for (Network network : networks) { 1087 nai = getNetworkAgentInfoForNetwork(network); 1088 nc = getNetworkCapabilitiesInternal(nai); 1089 if (nc != null) { 1090 result.put(network, nc); 1091 } 1092 } 1093 } 1094 } 1095 } 1096 } 1097 1098 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1099 out = result.values().toArray(out); 1100 return out; 1101 } 1102 1103 @Override 1104 public boolean isNetworkSupported(int networkType) { 1105 enforceAccessPermission(); 1106 return mLegacyTypeTracker.isTypeSupported(networkType); 1107 } 1108 1109 /** 1110 * Return LinkProperties for the active (i.e., connected) default 1111 * network interface. It is assumed that at most one default network 1112 * is active at a time. If more than one is active, it is indeterminate 1113 * which will be returned. 1114 * @return the ip properties for the active network, or {@code null} if 1115 * none is active 1116 */ 1117 @Override 1118 public LinkProperties getActiveLinkProperties() { 1119 enforceAccessPermission(); 1120 final int uid = Binder.getCallingUid(); 1121 NetworkState state = getUnfilteredActiveNetworkState(uid); 1122 return state.linkProperties; 1123 } 1124 1125 @Override 1126 public LinkProperties getLinkPropertiesForType(int networkType) { 1127 enforceAccessPermission(); 1128 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1129 if (nai != null) { 1130 synchronized (nai) { 1131 return new LinkProperties(nai.linkProperties); 1132 } 1133 } 1134 return null; 1135 } 1136 1137 // TODO - this should be ALL networks 1138 @Override 1139 public LinkProperties getLinkProperties(Network network) { 1140 enforceAccessPermission(); 1141 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1142 if (nai != null) { 1143 synchronized (nai) { 1144 return new LinkProperties(nai.linkProperties); 1145 } 1146 } 1147 return null; 1148 } 1149 1150 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1151 if (nai != null) { 1152 synchronized (nai) { 1153 if (nai.networkCapabilities != null) { 1154 return new NetworkCapabilities(nai.networkCapabilities); 1155 } 1156 } 1157 } 1158 return null; 1159 } 1160 1161 @Override 1162 public NetworkCapabilities getNetworkCapabilities(Network network) { 1163 enforceAccessPermission(); 1164 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1165 } 1166 1167 @Override 1168 public NetworkState[] getAllNetworkState() { 1169 // Require internal since we're handing out IMSI details 1170 enforceConnectivityInternalPermission(); 1171 1172 final ArrayList<NetworkState> result = Lists.newArrayList(); 1173 for (Network network : getAllNetworks()) { 1174 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1175 if (nai != null) { 1176 synchronized (nai) { 1177 final String subscriberId = (nai.networkMisc != null) 1178 ? nai.networkMisc.subscriberId : null; 1179 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1180 nai.networkCapabilities, network, subscriberId, null)); 1181 } 1182 } 1183 } 1184 return result.toArray(new NetworkState[result.size()]); 1185 } 1186 1187 @Override 1188 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1189 enforceAccessPermission(); 1190 final int uid = Binder.getCallingUid(); 1191 final long token = Binder.clearCallingIdentity(); 1192 try { 1193 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1194 if (state.networkInfo != null) { 1195 try { 1196 return mPolicyManager.getNetworkQuotaInfo(state); 1197 } catch (RemoteException e) { 1198 } 1199 } 1200 return null; 1201 } finally { 1202 Binder.restoreCallingIdentity(token); 1203 } 1204 } 1205 1206 @Override 1207 public boolean isActiveNetworkMetered() { 1208 enforceAccessPermission(); 1209 final int uid = Binder.getCallingUid(); 1210 final long token = Binder.clearCallingIdentity(); 1211 try { 1212 return isActiveNetworkMeteredUnchecked(uid); 1213 } finally { 1214 Binder.restoreCallingIdentity(token); 1215 } 1216 } 1217 1218 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1219 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1220 if (state.networkInfo != null) { 1221 try { 1222 return mPolicyManager.isNetworkMetered(state); 1223 } catch (RemoteException e) { 1224 } 1225 } 1226 return false; 1227 } 1228 1229 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1230 @Override 1231 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1232 int deviceType = Integer.parseInt(label); 1233 sendDataActivityBroadcast(deviceType, active, tsNanos); 1234 } 1235 }; 1236 1237 /** 1238 * Ensure that a network route exists to deliver traffic to the specified 1239 * host via the specified network interface. 1240 * @param networkType the type of the network over which traffic to the 1241 * specified host is to be routed 1242 * @param hostAddress the IP address of the host to which the route is 1243 * desired 1244 * @return {@code true} on success, {@code false} on failure 1245 */ 1246 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1247 enforceChangePermission(); 1248 if (mProtectedNetworks.contains(networkType)) { 1249 enforceConnectivityInternalPermission(); 1250 } 1251 1252 InetAddress addr; 1253 try { 1254 addr = InetAddress.getByAddress(hostAddress); 1255 } catch (UnknownHostException e) { 1256 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1257 return false; 1258 } 1259 1260 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1261 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1262 return false; 1263 } 1264 1265 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1266 if (nai == null) { 1267 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1268 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1269 } else { 1270 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1271 } 1272 return false; 1273 } 1274 1275 DetailedState netState; 1276 synchronized (nai) { 1277 netState = nai.networkInfo.getDetailedState(); 1278 } 1279 1280 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1281 if (VDBG) { 1282 log("requestRouteToHostAddress on down network " 1283 + "(" + networkType + ") - dropped" 1284 + " netState=" + netState); 1285 } 1286 return false; 1287 } 1288 1289 final int uid = Binder.getCallingUid(); 1290 final long token = Binder.clearCallingIdentity(); 1291 try { 1292 LinkProperties lp; 1293 int netId; 1294 synchronized (nai) { 1295 lp = nai.linkProperties; 1296 netId = nai.network.netId; 1297 } 1298 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1299 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1300 return ok; 1301 } finally { 1302 Binder.restoreCallingIdentity(token); 1303 } 1304 } 1305 1306 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1307 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1308 if (bestRoute == null) { 1309 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1310 } else { 1311 String iface = bestRoute.getInterface(); 1312 if (bestRoute.getGateway().equals(addr)) { 1313 // if there is no better route, add the implied hostroute for our gateway 1314 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1315 } else { 1316 // if we will connect to this through another route, add a direct route 1317 // to it's gateway 1318 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1319 } 1320 } 1321 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1322 try { 1323 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1324 } catch (Exception e) { 1325 // never crash - catch them all 1326 if (DBG) loge("Exception trying to add a route: " + e); 1327 return false; 1328 } 1329 return true; 1330 } 1331 1332 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1333 @Override 1334 public void onUidRulesChanged(int uid, int uidRules) { 1335 // caller is NPMS, since we only register with them 1336 if (LOGD_RULES) { 1337 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1338 } 1339 1340 synchronized (mRulesLock) { 1341 // skip update when we've already applied rules 1342 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1343 if (oldRules == uidRules) return; 1344 1345 mUidRules.put(uid, uidRules); 1346 } 1347 1348 // TODO: notify UID when it has requested targeted updates 1349 } 1350 1351 @Override 1352 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1353 // caller is NPMS, since we only register with them 1354 if (LOGD_RULES) { 1355 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1356 } 1357 1358 synchronized (mRulesLock) { 1359 mMeteredIfaces.clear(); 1360 for (String iface : meteredIfaces) { 1361 mMeteredIfaces.add(iface); 1362 } 1363 } 1364 } 1365 1366 @Override 1367 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1368 // caller is NPMS, since we only register with them 1369 if (LOGD_RULES) { 1370 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1371 } 1372 } 1373 }; 1374 1375 /** 1376 * Require that the caller is either in the same user or has appropriate permission to interact 1377 * across users. 1378 * 1379 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1380 */ 1381 private void enforceCrossUserPermission(int userId) { 1382 if (userId == UserHandle.getCallingUserId()) { 1383 // Not a cross-user call. 1384 return; 1385 } 1386 mContext.enforceCallingOrSelfPermission( 1387 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1388 "ConnectivityService"); 1389 } 1390 1391 private void enforceInternetPermission() { 1392 mContext.enforceCallingOrSelfPermission( 1393 android.Manifest.permission.INTERNET, 1394 "ConnectivityService"); 1395 } 1396 1397 private void enforceAccessPermission() { 1398 mContext.enforceCallingOrSelfPermission( 1399 android.Manifest.permission.ACCESS_NETWORK_STATE, 1400 "ConnectivityService"); 1401 } 1402 1403 private void enforceChangePermission() { 1404 mContext.enforceCallingOrSelfPermission( 1405 android.Manifest.permission.CHANGE_NETWORK_STATE, 1406 "ConnectivityService"); 1407 } 1408 1409 private void enforceTetherAccessPermission() { 1410 mContext.enforceCallingOrSelfPermission( 1411 android.Manifest.permission.ACCESS_NETWORK_STATE, 1412 "ConnectivityService"); 1413 } 1414 1415 private void enforceConnectivityInternalPermission() { 1416 mContext.enforceCallingOrSelfPermission( 1417 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1418 "ConnectivityService"); 1419 } 1420 1421 public void sendConnectedBroadcast(NetworkInfo info) { 1422 enforceConnectivityInternalPermission(); 1423 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1424 } 1425 1426 private void sendInetConditionBroadcast(NetworkInfo info) { 1427 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1428 } 1429 1430 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1431 if (mLockdownTracker != null) { 1432 info = mLockdownTracker.augmentNetworkInfo(info); 1433 } 1434 1435 Intent intent = new Intent(bcastType); 1436 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1437 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1438 if (info.isFailover()) { 1439 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1440 info.setFailover(false); 1441 } 1442 if (info.getReason() != null) { 1443 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1444 } 1445 if (info.getExtraInfo() != null) { 1446 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1447 info.getExtraInfo()); 1448 } 1449 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1450 return intent; 1451 } 1452 1453 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1454 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1455 } 1456 1457 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1458 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1459 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1460 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1461 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1462 final long ident = Binder.clearCallingIdentity(); 1463 try { 1464 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1465 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1466 } finally { 1467 Binder.restoreCallingIdentity(ident); 1468 } 1469 } 1470 1471 private void sendStickyBroadcast(Intent intent) { 1472 synchronized(this) { 1473 if (!mSystemReady) { 1474 mInitialBroadcast = new Intent(intent); 1475 } 1476 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1477 if (DBG) { 1478 log("sendStickyBroadcast: action=" + intent.getAction()); 1479 } 1480 1481 final long ident = Binder.clearCallingIdentity(); 1482 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1483 final IBatteryStats bs = BatteryStatsService.getService(); 1484 try { 1485 NetworkInfo ni = intent.getParcelableExtra( 1486 ConnectivityManager.EXTRA_NETWORK_INFO); 1487 bs.noteConnectivityChanged(intent.getIntExtra( 1488 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1489 ni != null ? ni.getState().toString() : "?"); 1490 } catch (RemoteException e) { 1491 } 1492 } 1493 try { 1494 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1495 } finally { 1496 Binder.restoreCallingIdentity(ident); 1497 } 1498 } 1499 } 1500 1501 void systemReady() { 1502 loadGlobalProxy(); 1503 1504 synchronized(this) { 1505 mSystemReady = true; 1506 if (mInitialBroadcast != null) { 1507 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1508 mInitialBroadcast = null; 1509 } 1510 } 1511 // load the global proxy at startup 1512 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1513 1514 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1515 // for user to unlock device. 1516 if (!updateLockdownVpn()) { 1517 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1518 mContext.registerReceiver(mUserPresentReceiver, filter); 1519 } 1520 1521 // Configure whether mobile data is always on. 1522 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1523 1524 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1525 1526 mPermissionMonitor.startMonitoring(); 1527 } 1528 1529 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1530 @Override 1531 public void onReceive(Context context, Intent intent) { 1532 // Try creating lockdown tracker, since user present usually means 1533 // unlocked keystore. 1534 if (updateLockdownVpn()) { 1535 mContext.unregisterReceiver(this); 1536 } 1537 } 1538 }; 1539 1540 /** 1541 * Setup data activity tracking for the given network. 1542 * 1543 * Every {@code setupDataActivityTracking} should be paired with a 1544 * {@link #removeDataActivityTracking} for cleanup. 1545 */ 1546 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1547 final String iface = networkAgent.linkProperties.getInterfaceName(); 1548 1549 final int timeout; 1550 int type = ConnectivityManager.TYPE_NONE; 1551 1552 if (networkAgent.networkCapabilities.hasTransport( 1553 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1554 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1555 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1556 5); 1557 type = ConnectivityManager.TYPE_MOBILE; 1558 } else if (networkAgent.networkCapabilities.hasTransport( 1559 NetworkCapabilities.TRANSPORT_WIFI)) { 1560 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1561 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1562 15); 1563 type = ConnectivityManager.TYPE_WIFI; 1564 } else { 1565 // do not track any other networks 1566 timeout = 0; 1567 } 1568 1569 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1570 try { 1571 mNetd.addIdleTimer(iface, timeout, type); 1572 } catch (Exception e) { 1573 // You shall not crash! 1574 loge("Exception in setupDataActivityTracking " + e); 1575 } 1576 } 1577 } 1578 1579 /** 1580 * Remove data activity tracking when network disconnects. 1581 */ 1582 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1583 final String iface = networkAgent.linkProperties.getInterfaceName(); 1584 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1585 1586 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1587 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1588 try { 1589 // the call fails silently if no idletimer setup for this interface 1590 mNetd.removeIdleTimer(iface); 1591 } catch (Exception e) { 1592 loge("Exception in removeDataActivityTracking " + e); 1593 } 1594 } 1595 } 1596 1597 /** 1598 * Reads the network specific MTU size from reources. 1599 * and set it on it's iface. 1600 */ 1601 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1602 final String iface = newLp.getInterfaceName(); 1603 final int mtu = newLp.getMtu(); 1604 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1605 if (VDBG) log("identical MTU - not setting"); 1606 return; 1607 } 1608 1609 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1610 loge("Unexpected mtu value: " + mtu + ", " + iface); 1611 return; 1612 } 1613 1614 // Cannot set MTU without interface name 1615 if (TextUtils.isEmpty(iface)) { 1616 loge("Setting MTU size with null iface."); 1617 return; 1618 } 1619 1620 try { 1621 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1622 mNetd.setMtu(iface, mtu); 1623 } catch (Exception e) { 1624 Slog.e(TAG, "exception in setMtu()" + e); 1625 } 1626 } 1627 1628 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1629 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1630 1631 // Overridden for testing purposes to avoid writing to SystemProperties. 1632 @VisibleForTesting 1633 protected int getDefaultTcpRwnd() { 1634 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1635 } 1636 1637 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1638 if (isDefaultNetwork(nai) == false) { 1639 return; 1640 } 1641 1642 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1643 String[] values = null; 1644 if (tcpBufferSizes != null) { 1645 values = tcpBufferSizes.split(","); 1646 } 1647 1648 if (values == null || values.length != 6) { 1649 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1650 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1651 values = tcpBufferSizes.split(","); 1652 } 1653 1654 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1655 1656 try { 1657 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1658 1659 final String prefix = "/sys/kernel/ipv4/tcp_"; 1660 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1661 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1662 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1663 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1664 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1665 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1666 mCurrentTcpBufferSizes = tcpBufferSizes; 1667 } catch (IOException e) { 1668 loge("Can't set TCP buffer sizes:" + e); 1669 } 1670 1671 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1672 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1673 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1674 if (rwndValue != 0) { 1675 SystemProperties.set(sysctlKey, rwndValue.toString()); 1676 } 1677 } 1678 1679 private void flushVmDnsCache() { 1680 /* 1681 * Tell the VMs to toss their DNS caches 1682 */ 1683 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1684 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1685 /* 1686 * Connectivity events can happen before boot has completed ... 1687 */ 1688 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1689 final long ident = Binder.clearCallingIdentity(); 1690 try { 1691 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1692 } finally { 1693 Binder.restoreCallingIdentity(ident); 1694 } 1695 } 1696 1697 @Override 1698 public int getRestoreDefaultNetworkDelay(int networkType) { 1699 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1700 NETWORK_RESTORE_DELAY_PROP_NAME); 1701 if(restoreDefaultNetworkDelayStr != null && 1702 restoreDefaultNetworkDelayStr.length() != 0) { 1703 try { 1704 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1705 } catch (NumberFormatException e) { 1706 } 1707 } 1708 // if the system property isn't set, use the value for the apn type 1709 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1710 1711 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1712 (mNetConfigs[networkType] != null)) { 1713 ret = mNetConfigs[networkType].restoreTime; 1714 } 1715 return ret; 1716 } 1717 1718 private boolean shouldPerformDiagnostics(String[] args) { 1719 for (String arg : args) { 1720 if (arg.equals("--diag")) { 1721 return true; 1722 } 1723 } 1724 return false; 1725 } 1726 1727 @Override 1728 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1729 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1730 if (mContext.checkCallingOrSelfPermission( 1731 android.Manifest.permission.DUMP) 1732 != PackageManager.PERMISSION_GRANTED) { 1733 pw.println("Permission Denial: can't dump ConnectivityService " + 1734 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1735 Binder.getCallingUid()); 1736 return; 1737 } 1738 1739 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1740 if (shouldPerformDiagnostics(args)) { 1741 final long DIAG_TIME_MS = 5000; 1742 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1743 // Start gathering diagnostic information. 1744 netDiags.add(new NetworkDiagnostics( 1745 nai.network, 1746 new LinkProperties(nai.linkProperties), 1747 DIAG_TIME_MS)); 1748 } 1749 1750 for (NetworkDiagnostics netDiag : netDiags) { 1751 pw.println(); 1752 netDiag.waitForMeasurements(); 1753 netDiag.dump(pw); 1754 } 1755 1756 return; 1757 } 1758 1759 pw.print("NetworkFactories for:"); 1760 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1761 pw.print(" " + nfi.name); 1762 } 1763 pw.println(); 1764 pw.println(); 1765 1766 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1767 pw.print("Active default network: "); 1768 if (defaultNai == null) { 1769 pw.println("none"); 1770 } else { 1771 pw.println(defaultNai.network.netId); 1772 } 1773 pw.println(); 1774 1775 pw.println("Current Networks:"); 1776 pw.increaseIndent(); 1777 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1778 pw.println(nai.toString()); 1779 pw.increaseIndent(); 1780 pw.println("Requests:"); 1781 pw.increaseIndent(); 1782 for (int i = 0; i < nai.networkRequests.size(); i++) { 1783 pw.println(nai.networkRequests.valueAt(i).toString()); 1784 } 1785 pw.decreaseIndent(); 1786 pw.println("Lingered:"); 1787 pw.increaseIndent(); 1788 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1789 pw.decreaseIndent(); 1790 pw.decreaseIndent(); 1791 } 1792 pw.decreaseIndent(); 1793 pw.println(); 1794 1795 pw.println("Network Requests:"); 1796 pw.increaseIndent(); 1797 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1798 pw.println(nri.toString()); 1799 } 1800 pw.println(); 1801 pw.decreaseIndent(); 1802 1803 mLegacyTypeTracker.dump(pw); 1804 1805 synchronized (this) { 1806 pw.print("mNetTransitionWakeLock: currently " + 1807 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1808 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1809 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1810 } else { 1811 pw.println(", last requested never"); 1812 } 1813 } 1814 pw.println(); 1815 1816 mTethering.dump(fd, pw, args); 1817 1818 if (mInetLog != null && mInetLog.size() > 0) { 1819 pw.println(); 1820 pw.println("Inet condition reports:"); 1821 pw.increaseIndent(); 1822 for(int i = 0; i < mInetLog.size(); i++) { 1823 pw.println(mInetLog.get(i)); 1824 } 1825 pw.decreaseIndent(); 1826 } 1827 } 1828 1829 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1830 if (nai.network == null) return false; 1831 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1832 if (officialNai != null && officialNai.equals(nai)) return true; 1833 if (officialNai != null || VDBG) { 1834 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1835 " - " + nai); 1836 } 1837 return false; 1838 } 1839 1840 private boolean isRequest(NetworkRequest request) { 1841 return mNetworkRequests.get(request).isRequest; 1842 } 1843 1844 // must be stateless - things change under us. 1845 private class NetworkStateTrackerHandler extends Handler { 1846 public NetworkStateTrackerHandler(Looper looper) { 1847 super(looper); 1848 } 1849 1850 @Override 1851 public void handleMessage(Message msg) { 1852 NetworkInfo info; 1853 switch (msg.what) { 1854 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1855 handleAsyncChannelHalfConnect(msg); 1856 break; 1857 } 1858 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1859 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1860 if (nai != null) nai.asyncChannel.disconnect(); 1861 break; 1862 } 1863 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1864 handleAsyncChannelDisconnected(msg); 1865 break; 1866 } 1867 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1868 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1869 if (nai == null) { 1870 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1871 } else { 1872 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1873 } 1874 break; 1875 } 1876 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1877 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1878 if (nai == null) { 1879 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1880 } else { 1881 if (VDBG) { 1882 log("Update of LinkProperties for " + nai.name() + 1883 "; created=" + nai.created); 1884 } 1885 LinkProperties oldLp = nai.linkProperties; 1886 synchronized (nai) { 1887 nai.linkProperties = (LinkProperties)msg.obj; 1888 } 1889 if (nai.created) updateLinkProperties(nai, oldLp); 1890 } 1891 break; 1892 } 1893 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1894 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1895 if (nai == null) { 1896 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1897 break; 1898 } 1899 info = (NetworkInfo) msg.obj; 1900 updateNetworkInfo(nai, info); 1901 break; 1902 } 1903 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1904 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1905 if (nai == null) { 1906 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1907 break; 1908 } 1909 Integer score = (Integer) msg.obj; 1910 if (score != null) updateNetworkScore(nai, score.intValue()); 1911 break; 1912 } 1913 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1914 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1915 if (nai == null) { 1916 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1917 break; 1918 } 1919 try { 1920 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1921 } catch (Exception e) { 1922 // Never crash! 1923 loge("Exception in addVpnUidRanges: " + e); 1924 } 1925 break; 1926 } 1927 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1928 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1929 if (nai == null) { 1930 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1931 break; 1932 } 1933 try { 1934 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1935 } catch (Exception e) { 1936 // Never crash! 1937 loge("Exception in removeVpnUidRanges: " + e); 1938 } 1939 break; 1940 } 1941 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1942 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1943 if (nai == null) { 1944 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1945 break; 1946 } 1947 if (nai.created && !nai.networkMisc.explicitlySelected) { 1948 loge("ERROR: created network explicitly selected."); 1949 } 1950 nai.networkMisc.explicitlySelected = true; 1951 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1952 break; 1953 } 1954 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1955 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1956 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1957 final boolean valid = 1958 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1959 final boolean validationChanged = (valid != nai.lastValidated); 1960 nai.lastValidated = valid; 1961 if (valid) { 1962 if (DBG) log("Validated " + nai.name()); 1963 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 1964 if (!nai.everValidated) { 1965 nai.everValidated = true; 1966 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1967 ReapUnvalidatedNetworks.REAP); 1968 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1969 sendUpdatedScoreToFactories(nai); 1970 } 1971 } else { 1972 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 1973 } 1974 updateInetCondition(nai); 1975 // Let the NetworkAgent know the state of its network 1976 nai.asyncChannel.sendMessage( 1977 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1978 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1979 0, null); 1980 1981 if (validationChanged) { 1982 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 1983 } 1984 } 1985 break; 1986 } 1987 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1988 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1989 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1990 handleLingerComplete(nai); 1991 } 1992 break; 1993 } 1994 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1995 final int netId = msg.arg2; 1996 if (msg.arg1 == 0) { 1997 setProvNotificationVisibleIntent(false, netId, null, 0, null, null); 1998 } else { 1999 final NetworkAgentInfo nai; 2000 synchronized (mNetworkForNetId) { 2001 nai = mNetworkForNetId.get(netId); 2002 } 2003 if (nai == null) { 2004 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2005 break; 2006 } 2007 nai.captivePortalDetected = true; 2008 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2009 nai.networkInfo.getType(),nai.networkInfo.getExtraInfo(), 2010 (PendingIntent)msg.obj); 2011 } 2012 break; 2013 } 2014 } 2015 } 2016 } 2017 2018 // Cancel any lingering so the linger timeout doesn't teardown a network. 2019 // This should be called when a network begins satisfying a NetworkRequest. 2020 // Note: depending on what state the NetworkMonitor is in (e.g., 2021 // if it's awaiting captive portal login, or if validation failed), this 2022 // may trigger a re-evaluation of the network. 2023 private void unlinger(NetworkAgentInfo nai) { 2024 if (VDBG) log("Canceling linger of " + nai.name()); 2025 // If network has never been validated, it cannot have been lingered, so don't bother 2026 // needlessly triggering a re-evaluation. 2027 if (!nai.everValidated) return; 2028 nai.networkLingered.clear(); 2029 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2030 } 2031 2032 private void handleAsyncChannelHalfConnect(Message msg) { 2033 AsyncChannel ac = (AsyncChannel) msg.obj; 2034 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2035 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2036 if (VDBG) log("NetworkFactory connected"); 2037 // A network factory has connected. Send it all current NetworkRequests. 2038 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2039 if (nri.isRequest == false) continue; 2040 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2041 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2042 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2043 } 2044 } else { 2045 loge("Error connecting NetworkFactory"); 2046 mNetworkFactoryInfos.remove(msg.obj); 2047 } 2048 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2049 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2050 if (VDBG) log("NetworkAgent connected"); 2051 // A network agent has requested a connection. Establish the connection. 2052 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2053 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2054 } else { 2055 loge("Error connecting NetworkAgent"); 2056 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2057 if (nai != null) { 2058 final boolean wasDefault = isDefaultNetwork(nai); 2059 synchronized (mNetworkForNetId) { 2060 mNetworkForNetId.remove(nai.network.netId); 2061 mNetIdInUse.delete(nai.network.netId); 2062 } 2063 // Just in case. 2064 mLegacyTypeTracker.remove(nai, wasDefault); 2065 } 2066 } 2067 } 2068 } 2069 2070 private void handleAsyncChannelDisconnected(Message msg) { 2071 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2072 if (nai != null) { 2073 if (DBG) { 2074 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2075 } 2076 // A network agent has disconnected. 2077 // TODO - if we move the logic to the network agent (have them disconnect 2078 // because they lost all their requests or because their score isn't good) 2079 // then they would disconnect organically, report their new state and then 2080 // disconnect the channel. 2081 if (nai.networkInfo.isConnected()) { 2082 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2083 null, null); 2084 } 2085 final boolean wasDefault = isDefaultNetwork(nai); 2086 if (wasDefault) { 2087 mDefaultInetConditionPublished = 0; 2088 } 2089 notifyIfacesChanged(); 2090 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2091 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2092 mNetworkAgentInfos.remove(msg.replyTo); 2093 updateClat(null, nai.linkProperties, nai); 2094 synchronized (mNetworkForNetId) { 2095 // Remove the NetworkAgent, but don't mark the netId as 2096 // available until we've told netd to delete it below. 2097 mNetworkForNetId.remove(nai.network.netId); 2098 } 2099 // Since we've lost the network, go through all the requests that 2100 // it was satisfying and see if any other factory can satisfy them. 2101 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2102 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2103 for (int i = 0; i < nai.networkRequests.size(); i++) { 2104 NetworkRequest request = nai.networkRequests.valueAt(i); 2105 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2106 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2107 if (DBG) { 2108 log("Checking for replacement network to handle request " + request ); 2109 } 2110 mNetworkForRequestId.remove(request.requestId); 2111 sendUpdatedScoreToFactories(request, 0); 2112 NetworkAgentInfo alternative = null; 2113 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2114 if (existing.satisfies(request) && 2115 (alternative == null || 2116 alternative.getCurrentScore() < existing.getCurrentScore())) { 2117 alternative = existing; 2118 } 2119 } 2120 if (alternative != null) { 2121 if (DBG) log(" found replacement in " + alternative.name()); 2122 if (!toActivate.contains(alternative)) { 2123 toActivate.add(alternative); 2124 } 2125 } 2126 } 2127 } 2128 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2129 removeDataActivityTracking(nai); 2130 notifyLockdownVpn(nai); 2131 requestNetworkTransitionWakelock(nai.name()); 2132 } 2133 mLegacyTypeTracker.remove(nai, wasDefault); 2134 for (NetworkAgentInfo networkToActivate : toActivate) { 2135 unlinger(networkToActivate); 2136 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2137 ReapUnvalidatedNetworks.DONT_REAP); 2138 } 2139 if (nai.created) { 2140 // Tell netd to clean up the configuration for this network 2141 // (routing rules, DNS, etc). 2142 // This may be slow as it requires a lot of netd shelling out to ip and 2143 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2144 // after we've rematched networks with requests which should make a potential 2145 // fallback network the default or requested a new network from the 2146 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2147 // long time. 2148 try { 2149 mNetd.removeNetwork(nai.network.netId); 2150 } catch (Exception e) { 2151 loge("Exception removing network: " + e); 2152 } 2153 } 2154 synchronized (mNetworkForNetId) { 2155 mNetIdInUse.delete(nai.network.netId); 2156 } 2157 } else { 2158 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2159 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2160 } 2161 } 2162 2163 // If this method proves to be too slow then we can maintain a separate 2164 // pendingIntent => NetworkRequestInfo map. 2165 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2166 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2167 Intent intent = pendingIntent.getIntent(); 2168 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2169 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2170 if (existingPendingIntent != null && 2171 existingPendingIntent.getIntent().filterEquals(intent)) { 2172 return entry.getValue(); 2173 } 2174 } 2175 return null; 2176 } 2177 2178 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2179 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2180 2181 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2182 if (existingRequest != null) { // remove the existing request. 2183 if (DBG) log("Replacing " + existingRequest.request + " with " 2184 + nri.request + " because their intents matched."); 2185 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2186 } 2187 handleRegisterNetworkRequest(nri); 2188 } 2189 2190 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2191 mNetworkRequests.put(nri.request, nri); 2192 2193 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2194 2195 // Check for the best currently alive network that satisfies this request 2196 NetworkAgentInfo bestNetwork = null; 2197 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2198 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2199 if (network.satisfies(nri.request)) { 2200 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2201 if (!nri.isRequest) { 2202 // Not setting bestNetwork here as a listening NetworkRequest may be 2203 // satisfied by multiple Networks. Instead the request is added to 2204 // each satisfying Network and notified about each. 2205 if (!network.addRequest(nri.request)) { 2206 Slog.wtf(TAG, "BUG: " + network.name() + " already has " + nri.request); 2207 } 2208 notifyNetworkCallback(network, nri); 2209 } else if (bestNetwork == null || 2210 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2211 bestNetwork = network; 2212 } 2213 } 2214 } 2215 if (bestNetwork != null) { 2216 if (DBG) log("using " + bestNetwork.name()); 2217 unlinger(bestNetwork); 2218 if (!bestNetwork.addRequest(nri.request)) { 2219 Slog.wtf(TAG, "BUG: " + bestNetwork.name() + " already has " + nri.request); 2220 } 2221 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2222 notifyNetworkCallback(bestNetwork, nri); 2223 if (nri.request.legacyType != TYPE_NONE) { 2224 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2225 } 2226 } 2227 2228 if (nri.isRequest) { 2229 if (DBG) log("sending new NetworkRequest to factories"); 2230 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2231 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2232 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2233 0, nri.request); 2234 } 2235 } 2236 } 2237 2238 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2239 int callingUid) { 2240 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2241 if (nri != null) { 2242 handleReleaseNetworkRequest(nri.request, callingUid); 2243 } 2244 } 2245 2246 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2247 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2248 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2249 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2250 private boolean unneeded(NetworkAgentInfo nai) { 2251 if (!nai.created || nai.isVPN()) return false; 2252 boolean unneeded = true; 2253 if (nai.everValidated) { 2254 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2255 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2256 try { 2257 if (isRequest(nr)) unneeded = false; 2258 } catch (Exception e) { 2259 loge("Request " + nr + " not found in mNetworkRequests."); 2260 loge(" it came from request list of " + nai.name()); 2261 } 2262 } 2263 } else { 2264 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2265 // If this Network is already the highest scoring Network for a request, or if 2266 // there is hope for it to become one if it validated, then it is needed. 2267 if (nri.isRequest && nai.satisfies(nri.request) && 2268 (nai.networkRequests.get(nri.request.requestId) != null || 2269 // Note that this catches two important cases: 2270 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2271 // is currently satisfying the request. This is desirable when 2272 // cellular ends up validating but WiFi does not. 2273 // 2. Unvalidated WiFi will not be reaped when validated cellular 2274 // is currently satsifying the request. This is desirable when 2275 // WiFi ends up validating and out scoring cellular. 2276 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2277 nai.getCurrentScoreAsValidated())) { 2278 unneeded = false; 2279 break; 2280 } 2281 } 2282 } 2283 return unneeded; 2284 } 2285 2286 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2287 NetworkRequestInfo nri = mNetworkRequests.get(request); 2288 if (nri != null) { 2289 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2290 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2291 return; 2292 } 2293 if (DBG) log("releasing NetworkRequest " + request); 2294 nri.unlinkDeathRecipient(); 2295 mNetworkRequests.remove(request); 2296 if (nri.isRequest) { 2297 // Find all networks that are satisfying this request and remove the request 2298 // from their request lists. 2299 // TODO - it's my understanding that for a request there is only a single 2300 // network satisfying it, so this loop is wasteful 2301 boolean wasKept = false; 2302 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2303 if (nai.networkRequests.get(nri.request.requestId) != null) { 2304 nai.networkRequests.remove(nri.request.requestId); 2305 if (DBG) { 2306 log(" Removing from current network " + nai.name() + 2307 ", leaving " + nai.networkRequests.size() + 2308 " requests."); 2309 } 2310 if (unneeded(nai)) { 2311 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2312 teardownUnneededNetwork(nai); 2313 } else { 2314 // suspect there should only be one pass through here 2315 // but if any were kept do the check below 2316 wasKept |= true; 2317 } 2318 } 2319 } 2320 2321 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2322 if (nai != null) { 2323 mNetworkForRequestId.remove(nri.request.requestId); 2324 } 2325 // Maintain the illusion. When this request arrived, we might have pretended 2326 // that a network connected to serve it, even though the network was already 2327 // connected. Now that this request has gone away, we might have to pretend 2328 // that the network disconnected. LegacyTypeTracker will generate that 2329 // phantom disconnect for this type. 2330 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2331 boolean doRemove = true; 2332 if (wasKept) { 2333 // check if any of the remaining requests for this network are for the 2334 // same legacy type - if so, don't remove the nai 2335 for (int i = 0; i < nai.networkRequests.size(); i++) { 2336 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2337 if (otherRequest.legacyType == nri.request.legacyType && 2338 isRequest(otherRequest)) { 2339 if (DBG) log(" still have other legacy request - leaving"); 2340 doRemove = false; 2341 } 2342 } 2343 } 2344 2345 if (doRemove) { 2346 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2347 } 2348 } 2349 2350 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2351 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2352 nri.request); 2353 } 2354 } else { 2355 // listens don't have a singular affectedNetwork. Check all networks to see 2356 // if this listen request applies and remove it. 2357 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2358 nai.networkRequests.remove(nri.request.requestId); 2359 } 2360 } 2361 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2362 } 2363 } 2364 2365 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2366 enforceConnectivityInternalPermission(); 2367 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2368 accept ? 1 : 0, always ? 1: 0, network)); 2369 } 2370 2371 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2372 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2373 " accept=" + accept + " always=" + always); 2374 2375 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2376 if (nai == null) { 2377 // Nothing to do. 2378 return; 2379 } 2380 2381 if (nai.everValidated) { 2382 // The network validated while the dialog box was up. Take no action. 2383 return; 2384 } 2385 2386 if (!nai.networkMisc.explicitlySelected) { 2387 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2388 } 2389 2390 if (accept != nai.networkMisc.acceptUnvalidated) { 2391 int oldScore = nai.getCurrentScore(); 2392 nai.networkMisc.acceptUnvalidated = accept; 2393 rematchAllNetworksAndRequests(nai, oldScore); 2394 sendUpdatedScoreToFactories(nai); 2395 } 2396 2397 if (always) { 2398 nai.asyncChannel.sendMessage( 2399 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2400 } 2401 2402 if (!accept) { 2403 // Tell the NetworkAgent that the network does not have Internet access (because that's 2404 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2405 // the future. We do this now because NetworkMonitor might not yet have finished 2406 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2407 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2408 NetworkAgent.INVALID_NETWORK, 0, null); 2409 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2410 // to reconnect to it immediately. http://b/20739299 2411 } 2412 2413 } 2414 2415 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2416 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2417 mHandler.sendMessageDelayed( 2418 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2419 PROMPT_UNVALIDATED_DELAY_MS); 2420 } 2421 2422 private void handlePromptUnvalidated(Network network) { 2423 if (DBG) log("handlePromptUnvalidated " + network); 2424 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2425 2426 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2427 // we haven't already been told to switch to it regardless of whether it validated or not. 2428 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2429 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2430 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2431 return; 2432 } 2433 2434 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2435 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2436 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2437 intent.setClassName("com.android.settings", 2438 "com.android.settings.wifi.WifiNoInternetDialog"); 2439 2440 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2441 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2442 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2443 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent); 2444 } 2445 2446 private class InternalHandler extends Handler { 2447 public InternalHandler(Looper looper) { 2448 super(looper); 2449 } 2450 2451 @Override 2452 public void handleMessage(Message msg) { 2453 switch (msg.what) { 2454 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2455 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2456 String causedBy = null; 2457 synchronized (ConnectivityService.this) { 2458 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2459 mNetTransitionWakeLock.isHeld()) { 2460 mNetTransitionWakeLock.release(); 2461 causedBy = mNetTransitionWakeLockCausedBy; 2462 } else { 2463 break; 2464 } 2465 } 2466 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2467 log("Failed to find a new network - expiring NetTransition Wakelock"); 2468 } else { 2469 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2470 " cleared because we found a replacement network"); 2471 } 2472 break; 2473 } 2474 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2475 handleDeprecatedGlobalHttpProxy(); 2476 break; 2477 } 2478 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2479 Intent intent = (Intent)msg.obj; 2480 sendStickyBroadcast(intent); 2481 break; 2482 } 2483 case EVENT_PROXY_HAS_CHANGED: { 2484 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2485 break; 2486 } 2487 case EVENT_REGISTER_NETWORK_FACTORY: { 2488 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2489 break; 2490 } 2491 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2492 handleUnregisterNetworkFactory((Messenger)msg.obj); 2493 break; 2494 } 2495 case EVENT_REGISTER_NETWORK_AGENT: { 2496 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2497 break; 2498 } 2499 case EVENT_REGISTER_NETWORK_REQUEST: 2500 case EVENT_REGISTER_NETWORK_LISTENER: { 2501 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2502 break; 2503 } 2504 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2505 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2506 handleRegisterNetworkRequestWithIntent(msg); 2507 break; 2508 } 2509 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2510 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2511 break; 2512 } 2513 case EVENT_RELEASE_NETWORK_REQUEST: { 2514 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2515 break; 2516 } 2517 case EVENT_SET_ACCEPT_UNVALIDATED: { 2518 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2519 break; 2520 } 2521 case EVENT_PROMPT_UNVALIDATED: { 2522 handlePromptUnvalidated((Network) msg.obj); 2523 break; 2524 } 2525 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2526 handleMobileDataAlwaysOn(); 2527 break; 2528 } 2529 case EVENT_SYSTEM_READY: { 2530 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2531 nai.networkMonitor.systemReady = true; 2532 } 2533 break; 2534 } 2535 } 2536 } 2537 } 2538 2539 // javadoc from interface 2540 public int tether(String iface) { 2541 ConnectivityManager.enforceTetherChangePermission(mContext); 2542 if (isTetheringSupported()) { 2543 return mTethering.tether(iface); 2544 } else { 2545 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2546 } 2547 } 2548 2549 // javadoc from interface 2550 public int untether(String iface) { 2551 ConnectivityManager.enforceTetherChangePermission(mContext); 2552 2553 if (isTetheringSupported()) { 2554 return mTethering.untether(iface); 2555 } else { 2556 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2557 } 2558 } 2559 2560 // javadoc from interface 2561 public int getLastTetherError(String iface) { 2562 enforceTetherAccessPermission(); 2563 2564 if (isTetheringSupported()) { 2565 return mTethering.getLastTetherError(iface); 2566 } else { 2567 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2568 } 2569 } 2570 2571 // TODO - proper iface API for selection by property, inspection, etc 2572 public String[] getTetherableUsbRegexs() { 2573 enforceTetherAccessPermission(); 2574 if (isTetheringSupported()) { 2575 return mTethering.getTetherableUsbRegexs(); 2576 } else { 2577 return new String[0]; 2578 } 2579 } 2580 2581 public String[] getTetherableWifiRegexs() { 2582 enforceTetherAccessPermission(); 2583 if (isTetheringSupported()) { 2584 return mTethering.getTetherableWifiRegexs(); 2585 } else { 2586 return new String[0]; 2587 } 2588 } 2589 2590 public String[] getTetherableBluetoothRegexs() { 2591 enforceTetherAccessPermission(); 2592 if (isTetheringSupported()) { 2593 return mTethering.getTetherableBluetoothRegexs(); 2594 } else { 2595 return new String[0]; 2596 } 2597 } 2598 2599 public int setUsbTethering(boolean enable) { 2600 ConnectivityManager.enforceTetherChangePermission(mContext); 2601 if (isTetheringSupported()) { 2602 return mTethering.setUsbTethering(enable); 2603 } else { 2604 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2605 } 2606 } 2607 2608 // TODO - move iface listing, queries, etc to new module 2609 // javadoc from interface 2610 public String[] getTetherableIfaces() { 2611 enforceTetherAccessPermission(); 2612 return mTethering.getTetherableIfaces(); 2613 } 2614 2615 public String[] getTetheredIfaces() { 2616 enforceTetherAccessPermission(); 2617 return mTethering.getTetheredIfaces(); 2618 } 2619 2620 public String[] getTetheringErroredIfaces() { 2621 enforceTetherAccessPermission(); 2622 return mTethering.getErroredIfaces(); 2623 } 2624 2625 public String[] getTetheredDhcpRanges() { 2626 enforceConnectivityInternalPermission(); 2627 return mTethering.getTetheredDhcpRanges(); 2628 } 2629 2630 // if ro.tether.denied = true we default to no tethering 2631 // gservices could set the secure setting to 1 though to enable it on a build where it 2632 // had previously been turned off. 2633 public boolean isTetheringSupported() { 2634 enforceTetherAccessPermission(); 2635 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2636 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2637 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2638 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2639 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2640 mTethering.getTetherableWifiRegexs().length != 0 || 2641 mTethering.getTetherableBluetoothRegexs().length != 0) && 2642 mTethering.getUpstreamIfaceTypes().length != 0); 2643 } 2644 2645 // Called when we lose the default network and have no replacement yet. 2646 // This will automatically be cleared after X seconds or a new default network 2647 // becomes CONNECTED, whichever happens first. The timer is started by the 2648 // first caller and not restarted by subsequent callers. 2649 private void requestNetworkTransitionWakelock(String forWhom) { 2650 int serialNum = 0; 2651 synchronized (this) { 2652 if (mNetTransitionWakeLock.isHeld()) return; 2653 serialNum = ++mNetTransitionWakeLockSerialNumber; 2654 mNetTransitionWakeLock.acquire(); 2655 mNetTransitionWakeLockCausedBy = forWhom; 2656 } 2657 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2658 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2659 mNetTransitionWakeLockTimeout); 2660 return; 2661 } 2662 2663 // 100 percent is full good, 0 is full bad. 2664 public void reportInetCondition(int networkType, int percentage) { 2665 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2666 if (nai == null) return; 2667 reportNetworkConnectivity(nai.network, percentage > 50); 2668 } 2669 2670 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2671 enforceAccessPermission(); 2672 enforceInternetPermission(); 2673 2674 NetworkAgentInfo nai; 2675 if (network == null) { 2676 nai = getDefaultNetwork(); 2677 } else { 2678 nai = getNetworkAgentInfoForNetwork(network); 2679 } 2680 if (nai == null) return; 2681 // Revalidate if the app report does not match our current validated state. 2682 if (hasConnectivity == nai.lastValidated) return; 2683 final int uid = Binder.getCallingUid(); 2684 if (DBG) { 2685 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2686 ") by " + uid); 2687 } 2688 synchronized (nai) { 2689 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2690 // which isn't meant to work on uncreated networks. 2691 if (!nai.created) return; 2692 2693 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2694 2695 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2696 } 2697 } 2698 2699 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2700 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2701 enforceConnectivityInternalPermission(); 2702 } 2703 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2704 if (nai == null) return; 2705 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2706 actionToken); 2707 } 2708 2709 private ProxyInfo getDefaultProxy() { 2710 // this information is already available as a world read/writable jvm property 2711 // so this API change wouldn't have a benifit. It also breaks the passing 2712 // of proxy info to all the JVMs. 2713 // enforceAccessPermission(); 2714 synchronized (mProxyLock) { 2715 ProxyInfo ret = mGlobalProxy; 2716 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2717 return ret; 2718 } 2719 } 2720 2721 public ProxyInfo getProxyForNetwork(Network network) { 2722 if (network == null) return getDefaultProxy(); 2723 final ProxyInfo globalProxy = getGlobalProxy(); 2724 if (globalProxy != null) return globalProxy; 2725 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2726 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2727 // caller may not have. 2728 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2729 if (nai == null) return null; 2730 synchronized (nai) { 2731 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2732 if (proxyInfo == null) return null; 2733 return new ProxyInfo(proxyInfo); 2734 } 2735 } 2736 2737 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2738 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2739 // proxy is null then there is no proxy in place). 2740 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2741 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2742 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2743 proxy = null; 2744 } 2745 return proxy; 2746 } 2747 2748 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2749 // better for determining if a new proxy broadcast is necessary: 2750 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2751 // avoid unnecessary broadcasts. 2752 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2753 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2754 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2755 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2756 // all set. 2757 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2758 a = canonicalizeProxyInfo(a); 2759 b = canonicalizeProxyInfo(b); 2760 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2761 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2762 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2763 } 2764 2765 public void setGlobalProxy(ProxyInfo proxyProperties) { 2766 enforceConnectivityInternalPermission(); 2767 2768 synchronized (mProxyLock) { 2769 if (proxyProperties == mGlobalProxy) return; 2770 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2771 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2772 2773 String host = ""; 2774 int port = 0; 2775 String exclList = ""; 2776 String pacFileUrl = ""; 2777 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2778 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2779 if (!proxyProperties.isValid()) { 2780 if (DBG) 2781 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2782 return; 2783 } 2784 mGlobalProxy = new ProxyInfo(proxyProperties); 2785 host = mGlobalProxy.getHost(); 2786 port = mGlobalProxy.getPort(); 2787 exclList = mGlobalProxy.getExclusionListAsString(); 2788 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2789 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2790 } 2791 } else { 2792 mGlobalProxy = null; 2793 } 2794 ContentResolver res = mContext.getContentResolver(); 2795 final long token = Binder.clearCallingIdentity(); 2796 try { 2797 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2798 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2799 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2800 exclList); 2801 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2802 } finally { 2803 Binder.restoreCallingIdentity(token); 2804 } 2805 2806 if (mGlobalProxy == null) { 2807 proxyProperties = mDefaultProxy; 2808 } 2809 sendProxyBroadcast(proxyProperties); 2810 } 2811 } 2812 2813 private void loadGlobalProxy() { 2814 ContentResolver res = mContext.getContentResolver(); 2815 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2816 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2817 String exclList = Settings.Global.getString(res, 2818 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2819 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2820 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2821 ProxyInfo proxyProperties; 2822 if (!TextUtils.isEmpty(pacFileUrl)) { 2823 proxyProperties = new ProxyInfo(pacFileUrl); 2824 } else { 2825 proxyProperties = new ProxyInfo(host, port, exclList); 2826 } 2827 if (!proxyProperties.isValid()) { 2828 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2829 return; 2830 } 2831 2832 synchronized (mProxyLock) { 2833 mGlobalProxy = proxyProperties; 2834 } 2835 } 2836 } 2837 2838 public ProxyInfo getGlobalProxy() { 2839 // this information is already available as a world read/writable jvm property 2840 // so this API change wouldn't have a benifit. It also breaks the passing 2841 // of proxy info to all the JVMs. 2842 // enforceAccessPermission(); 2843 synchronized (mProxyLock) { 2844 return mGlobalProxy; 2845 } 2846 } 2847 2848 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2849 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2850 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2851 proxy = null; 2852 } 2853 synchronized (mProxyLock) { 2854 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2855 if (mDefaultProxy == proxy) return; // catches repeated nulls 2856 if (proxy != null && !proxy.isValid()) { 2857 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2858 return; 2859 } 2860 2861 // This call could be coming from the PacManager, containing the port of the local 2862 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2863 // global (to get the correct local port), and send a broadcast. 2864 // TODO: Switch PacManager to have its own message to send back rather than 2865 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2866 if ((mGlobalProxy != null) && (proxy != null) 2867 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2868 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2869 mGlobalProxy = proxy; 2870 sendProxyBroadcast(mGlobalProxy); 2871 return; 2872 } 2873 mDefaultProxy = proxy; 2874 2875 if (mGlobalProxy != null) return; 2876 if (!mDefaultProxyDisabled) { 2877 sendProxyBroadcast(proxy); 2878 } 2879 } 2880 } 2881 2882 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2883 // This method gets called when any network changes proxy, but the broadcast only ever contains 2884 // the default proxy (even if it hasn't changed). 2885 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2886 // world where an app might be bound to a non-default network. 2887 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2888 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2889 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2890 2891 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2892 sendProxyBroadcast(getDefaultProxy()); 2893 } 2894 } 2895 2896 private void handleDeprecatedGlobalHttpProxy() { 2897 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2898 Settings.Global.HTTP_PROXY); 2899 if (!TextUtils.isEmpty(proxy)) { 2900 String data[] = proxy.split(":"); 2901 if (data.length == 0) { 2902 return; 2903 } 2904 2905 String proxyHost = data[0]; 2906 int proxyPort = 8080; 2907 if (data.length > 1) { 2908 try { 2909 proxyPort = Integer.parseInt(data[1]); 2910 } catch (NumberFormatException e) { 2911 return; 2912 } 2913 } 2914 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2915 setGlobalProxy(p); 2916 } 2917 } 2918 2919 private void sendProxyBroadcast(ProxyInfo proxy) { 2920 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2921 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2922 if (DBG) log("sending Proxy Broadcast for " + proxy); 2923 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2924 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2925 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2926 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2927 final long ident = Binder.clearCallingIdentity(); 2928 try { 2929 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2930 } finally { 2931 Binder.restoreCallingIdentity(ident); 2932 } 2933 } 2934 2935 private static class SettingsObserver extends ContentObserver { 2936 final private HashMap<Uri, Integer> mUriEventMap; 2937 final private Context mContext; 2938 final private Handler mHandler; 2939 2940 SettingsObserver(Context context, Handler handler) { 2941 super(null); 2942 mUriEventMap = new HashMap<Uri, Integer>(); 2943 mContext = context; 2944 mHandler = handler; 2945 } 2946 2947 void observe(Uri uri, int what) { 2948 mUriEventMap.put(uri, what); 2949 final ContentResolver resolver = mContext.getContentResolver(); 2950 resolver.registerContentObserver(uri, false, this); 2951 } 2952 2953 @Override 2954 public void onChange(boolean selfChange) { 2955 Slog.wtf(TAG, "Should never be reached."); 2956 } 2957 2958 @Override 2959 public void onChange(boolean selfChange, Uri uri) { 2960 final Integer what = mUriEventMap.get(uri); 2961 if (what != null) { 2962 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2963 } else { 2964 loge("No matching event to send for URI=" + uri); 2965 } 2966 } 2967 } 2968 2969 private static void log(String s) { 2970 Slog.d(TAG, s); 2971 } 2972 2973 private static void loge(String s) { 2974 Slog.e(TAG, s); 2975 } 2976 2977 private static <T> T checkNotNull(T value, String message) { 2978 if (value == null) { 2979 throw new NullPointerException(message); 2980 } 2981 return value; 2982 } 2983 2984 /** 2985 * Prepare for a VPN application. 2986 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2987 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2988 * 2989 * @param oldPackage Package name of the application which currently controls VPN, which will 2990 * be replaced. If there is no such application, this should should either be 2991 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 2992 * @param newPackage Package name of the application which should gain control of VPN, or 2993 * {@code null} to disable. 2994 * @param userId User for whom to prepare the new VPN. 2995 * 2996 * @hide 2997 */ 2998 @Override 2999 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3000 int userId) { 3001 enforceCrossUserPermission(userId); 3002 throwIfLockdownEnabled(); 3003 3004 synchronized(mVpns) { 3005 Vpn vpn = mVpns.get(userId); 3006 if (vpn != null) { 3007 return vpn.prepare(oldPackage, newPackage); 3008 } else { 3009 return false; 3010 } 3011 } 3012 } 3013 3014 /** 3015 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3016 * This method is used by system-privileged apps. 3017 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3018 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3019 * 3020 * @param packageName The package for which authorization state should change. 3021 * @param userId User for whom {@code packageName} is installed. 3022 * @param authorized {@code true} if this app should be able to start a VPN connection without 3023 * explicit user approval, {@code false} if not. 3024 * 3025 * @hide 3026 */ 3027 @Override 3028 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3029 enforceCrossUserPermission(userId); 3030 3031 synchronized(mVpns) { 3032 Vpn vpn = mVpns.get(userId); 3033 if (vpn != null) { 3034 vpn.setPackageAuthorization(packageName, authorized); 3035 } 3036 } 3037 } 3038 3039 /** 3040 * Configure a TUN interface and return its file descriptor. Parameters 3041 * are encoded and opaque to this class. This method is used by VpnBuilder 3042 * and not available in ConnectivityManager. Permissions are checked in 3043 * Vpn class. 3044 * @hide 3045 */ 3046 @Override 3047 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3048 throwIfLockdownEnabled(); 3049 int user = UserHandle.getUserId(Binder.getCallingUid()); 3050 synchronized(mVpns) { 3051 return mVpns.get(user).establish(config); 3052 } 3053 } 3054 3055 /** 3056 * Start legacy VPN, controlling native daemons as needed. Creates a 3057 * secondary thread to perform connection work, returning quickly. 3058 */ 3059 @Override 3060 public void startLegacyVpn(VpnProfile profile) { 3061 throwIfLockdownEnabled(); 3062 final LinkProperties egress = getActiveLinkProperties(); 3063 if (egress == null) { 3064 throw new IllegalStateException("Missing active network connection"); 3065 } 3066 int user = UserHandle.getUserId(Binder.getCallingUid()); 3067 synchronized(mVpns) { 3068 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3069 } 3070 } 3071 3072 /** 3073 * Return the information of the ongoing legacy VPN. This method is used 3074 * by VpnSettings and not available in ConnectivityManager. Permissions 3075 * are checked in Vpn class. 3076 */ 3077 @Override 3078 public LegacyVpnInfo getLegacyVpnInfo() { 3079 throwIfLockdownEnabled(); 3080 int user = UserHandle.getUserId(Binder.getCallingUid()); 3081 synchronized(mVpns) { 3082 return mVpns.get(user).getLegacyVpnInfo(); 3083 } 3084 } 3085 3086 /** 3087 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3088 * and not available in ConnectivityManager. 3089 */ 3090 @Override 3091 public VpnInfo[] getAllVpnInfo() { 3092 enforceConnectivityInternalPermission(); 3093 if (mLockdownEnabled) { 3094 return new VpnInfo[0]; 3095 } 3096 3097 synchronized(mVpns) { 3098 List<VpnInfo> infoList = new ArrayList<>(); 3099 for (int i = 0; i < mVpns.size(); i++) { 3100 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3101 if (info != null) { 3102 infoList.add(info); 3103 } 3104 } 3105 return infoList.toArray(new VpnInfo[infoList.size()]); 3106 } 3107 } 3108 3109 /** 3110 * @return VPN information for accounting, or null if we can't retrieve all required 3111 * information, e.g primary underlying iface. 3112 */ 3113 @Nullable 3114 private VpnInfo createVpnInfo(Vpn vpn) { 3115 VpnInfo info = vpn.getVpnInfo(); 3116 if (info == null) { 3117 return null; 3118 } 3119 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3120 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3121 // the underlyingNetworks list. 3122 if (underlyingNetworks == null) { 3123 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3124 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3125 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3126 } 3127 } else if (underlyingNetworks.length > 0) { 3128 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3129 if (linkProperties != null) { 3130 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3131 } 3132 } 3133 return info.primaryUnderlyingIface == null ? null : info; 3134 } 3135 3136 /** 3137 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3138 * VpnDialogs and not available in ConnectivityManager. 3139 * Permissions are checked in Vpn class. 3140 * @hide 3141 */ 3142 @Override 3143 public VpnConfig getVpnConfig(int userId) { 3144 enforceCrossUserPermission(userId); 3145 synchronized(mVpns) { 3146 Vpn vpn = mVpns.get(userId); 3147 if (vpn != null) { 3148 return vpn.getVpnConfig(); 3149 } else { 3150 return null; 3151 } 3152 } 3153 } 3154 3155 @Override 3156 public boolean updateLockdownVpn() { 3157 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3158 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3159 return false; 3160 } 3161 3162 // Tear down existing lockdown if profile was removed 3163 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3164 if (mLockdownEnabled) { 3165 if (!mKeyStore.isUnlocked()) { 3166 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3167 return false; 3168 } 3169 3170 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3171 final VpnProfile profile = VpnProfile.decode( 3172 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3173 int user = UserHandle.getUserId(Binder.getCallingUid()); 3174 synchronized(mVpns) { 3175 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3176 profile)); 3177 } 3178 } else { 3179 setLockdownTracker(null); 3180 } 3181 3182 return true; 3183 } 3184 3185 /** 3186 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3187 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3188 */ 3189 private void setLockdownTracker(LockdownVpnTracker tracker) { 3190 // Shutdown any existing tracker 3191 final LockdownVpnTracker existing = mLockdownTracker; 3192 mLockdownTracker = null; 3193 if (existing != null) { 3194 existing.shutdown(); 3195 } 3196 3197 try { 3198 if (tracker != null) { 3199 mNetd.setFirewallEnabled(true); 3200 mNetd.setFirewallInterfaceRule("lo", true); 3201 mLockdownTracker = tracker; 3202 mLockdownTracker.init(); 3203 } else { 3204 mNetd.setFirewallEnabled(false); 3205 } 3206 } catch (RemoteException e) { 3207 // ignored; NMS lives inside system_server 3208 } 3209 } 3210 3211 private void throwIfLockdownEnabled() { 3212 if (mLockdownEnabled) { 3213 throw new IllegalStateException("Unavailable in lockdown mode"); 3214 } 3215 } 3216 3217 @Override 3218 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3219 // TODO: Remove? Any reason to trigger a provisioning check? 3220 return -1; 3221 } 3222 3223 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3224 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3225 3226 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3227 if (DBG) { 3228 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3229 + " action=" + action); 3230 } 3231 Intent intent = new Intent(action); 3232 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3233 // Concatenate the range of types onto the range of NetIDs. 3234 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3235 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3236 networkType, null, pendingIntent); 3237 } 3238 3239 /** 3240 * Show or hide network provisioning notifications. 3241 * 3242 * We use notifications for two purposes: to notify that a network requires sign in 3243 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3244 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3245 * particular network we can display the notification type that was most recently requested. 3246 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3247 * might first display NO_INTERNET, and then when the captive portal check completes, display 3248 * SIGN_IN. 3249 * 3250 * @param id an identifier that uniquely identifies this notification. This must match 3251 * between show and hide calls. We use the NetID value but for legacy callers 3252 * we concatenate the range of types with the range of NetIDs. 3253 */ 3254 private void setProvNotificationVisibleIntent(boolean visible, int id, 3255 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent) { 3256 if (DBG) { 3257 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3258 + " networkType=" + getNetworkTypeName(networkType) 3259 + " extraInfo=" + extraInfo); 3260 } 3261 3262 Resources r = Resources.getSystem(); 3263 NotificationManager notificationManager = (NotificationManager) mContext 3264 .getSystemService(Context.NOTIFICATION_SERVICE); 3265 3266 if (visible) { 3267 CharSequence title; 3268 CharSequence details; 3269 int icon; 3270 if (notifyType == NotificationType.NO_INTERNET && 3271 networkType == ConnectivityManager.TYPE_WIFI) { 3272 title = r.getString(R.string.wifi_no_internet, 0); 3273 details = r.getString(R.string.wifi_no_internet_detailed); 3274 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3275 } else if (notifyType == NotificationType.SIGN_IN) { 3276 switch (networkType) { 3277 case ConnectivityManager.TYPE_WIFI: 3278 title = r.getString(R.string.wifi_available_sign_in, 0); 3279 details = r.getString(R.string.network_available_sign_in_detailed, 3280 extraInfo); 3281 icon = R.drawable.stat_notify_wifi_in_range; 3282 break; 3283 case ConnectivityManager.TYPE_MOBILE: 3284 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3285 title = r.getString(R.string.network_available_sign_in, 0); 3286 // TODO: Change this to pull from NetworkInfo once a printable 3287 // name has been added to it 3288 details = mTelephonyManager.getNetworkOperatorName(); 3289 icon = R.drawable.stat_notify_rssi_in_range; 3290 break; 3291 default: 3292 title = r.getString(R.string.network_available_sign_in, 0); 3293 details = r.getString(R.string.network_available_sign_in_detailed, 3294 extraInfo); 3295 icon = R.drawable.stat_notify_rssi_in_range; 3296 break; 3297 } 3298 } else { 3299 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3300 + getNetworkTypeName(networkType)); 3301 return; 3302 } 3303 3304 Notification notification = new Notification.Builder(mContext) 3305 .setWhen(0) 3306 .setSmallIcon(icon) 3307 .setAutoCancel(true) 3308 .setTicker(title) 3309 .setColor(mContext.getColor( 3310 com.android.internal.R.color.system_notification_accent_color)) 3311 .setContentTitle(title) 3312 .setContentText(details) 3313 .setContentIntent(intent) 3314 .build(); 3315 3316 try { 3317 notificationManager.notify(NOTIFICATION_ID, id, notification); 3318 } catch (NullPointerException npe) { 3319 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3320 npe.printStackTrace(); 3321 } 3322 } else { 3323 try { 3324 notificationManager.cancel(NOTIFICATION_ID, id); 3325 } catch (NullPointerException npe) { 3326 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3327 npe.printStackTrace(); 3328 } 3329 } 3330 } 3331 3332 /** Location to an updatable file listing carrier provisioning urls. 3333 * An example: 3334 * 3335 * <?xml version="1.0" encoding="utf-8"?> 3336 * <provisioningUrls> 3337 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3338 * </provisioningUrls> 3339 */ 3340 private static final String PROVISIONING_URL_PATH = 3341 "/data/misc/radio/provisioning_urls.xml"; 3342 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3343 3344 /** XML tag for root element. */ 3345 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3346 /** XML tag for individual url */ 3347 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3348 /** XML attribute for mcc */ 3349 private static final String ATTR_MCC = "mcc"; 3350 /** XML attribute for mnc */ 3351 private static final String ATTR_MNC = "mnc"; 3352 3353 private String getProvisioningUrlBaseFromFile() { 3354 FileReader fileReader = null; 3355 XmlPullParser parser = null; 3356 Configuration config = mContext.getResources().getConfiguration(); 3357 3358 try { 3359 fileReader = new FileReader(mProvisioningUrlFile); 3360 parser = Xml.newPullParser(); 3361 parser.setInput(fileReader); 3362 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3363 3364 while (true) { 3365 XmlUtils.nextElement(parser); 3366 3367 String element = parser.getName(); 3368 if (element == null) break; 3369 3370 if (element.equals(TAG_PROVISIONING_URL)) { 3371 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3372 try { 3373 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3374 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3375 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3376 parser.next(); 3377 if (parser.getEventType() == XmlPullParser.TEXT) { 3378 return parser.getText(); 3379 } 3380 } 3381 } 3382 } catch (NumberFormatException e) { 3383 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3384 } 3385 } 3386 } 3387 return null; 3388 } catch (FileNotFoundException e) { 3389 loge("Carrier Provisioning Urls file not found"); 3390 } catch (XmlPullParserException e) { 3391 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3392 } catch (IOException e) { 3393 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3394 } finally { 3395 if (fileReader != null) { 3396 try { 3397 fileReader.close(); 3398 } catch (IOException e) {} 3399 } 3400 } 3401 return null; 3402 } 3403 3404 @Override 3405 public String getMobileProvisioningUrl() { 3406 enforceConnectivityInternalPermission(); 3407 String url = getProvisioningUrlBaseFromFile(); 3408 if (TextUtils.isEmpty(url)) { 3409 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3410 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3411 } else { 3412 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3413 } 3414 // populate the iccid, imei and phone number in the provisioning url. 3415 if (!TextUtils.isEmpty(url)) { 3416 String phoneNumber = mTelephonyManager.getLine1Number(); 3417 if (TextUtils.isEmpty(phoneNumber)) { 3418 phoneNumber = "0000000000"; 3419 } 3420 url = String.format(url, 3421 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3422 mTelephonyManager.getDeviceId() /* IMEI */, 3423 phoneNumber /* Phone numer */); 3424 } 3425 3426 return url; 3427 } 3428 3429 @Override 3430 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3431 String action) { 3432 enforceConnectivityInternalPermission(); 3433 final long ident = Binder.clearCallingIdentity(); 3434 try { 3435 setProvNotificationVisible(visible, networkType, action); 3436 } finally { 3437 Binder.restoreCallingIdentity(ident); 3438 } 3439 } 3440 3441 @Override 3442 public void setAirplaneMode(boolean enable) { 3443 enforceConnectivityInternalPermission(); 3444 final long ident = Binder.clearCallingIdentity(); 3445 try { 3446 final ContentResolver cr = mContext.getContentResolver(); 3447 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3448 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3449 intent.putExtra("state", enable); 3450 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3451 } finally { 3452 Binder.restoreCallingIdentity(ident); 3453 } 3454 } 3455 3456 private void onUserStart(int userId) { 3457 synchronized(mVpns) { 3458 Vpn userVpn = mVpns.get(userId); 3459 if (userVpn != null) { 3460 loge("Starting user already has a VPN"); 3461 return; 3462 } 3463 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3464 mVpns.put(userId, userVpn); 3465 } 3466 } 3467 3468 private void onUserStop(int userId) { 3469 synchronized(mVpns) { 3470 Vpn userVpn = mVpns.get(userId); 3471 if (userVpn == null) { 3472 loge("Stopping user has no VPN"); 3473 return; 3474 } 3475 mVpns.delete(userId); 3476 } 3477 } 3478 3479 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3480 @Override 3481 public void onReceive(Context context, Intent intent) { 3482 final String action = intent.getAction(); 3483 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3484 if (userId == UserHandle.USER_NULL) return; 3485 3486 if (Intent.ACTION_USER_STARTING.equals(action)) { 3487 onUserStart(userId); 3488 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3489 onUserStop(userId); 3490 } 3491 } 3492 }; 3493 3494 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3495 new HashMap<Messenger, NetworkFactoryInfo>(); 3496 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3497 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3498 3499 private static class NetworkFactoryInfo { 3500 public final String name; 3501 public final Messenger messenger; 3502 public final AsyncChannel asyncChannel; 3503 3504 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3505 this.name = name; 3506 this.messenger = messenger; 3507 this.asyncChannel = asyncChannel; 3508 } 3509 } 3510 3511 /** 3512 * Tracks info about the requester. 3513 * Also used to notice when the calling process dies so we can self-expire 3514 */ 3515 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3516 static final boolean REQUEST = true; 3517 static final boolean LISTEN = false; 3518 3519 final NetworkRequest request; 3520 final PendingIntent mPendingIntent; 3521 boolean mPendingIntentSent; 3522 private final IBinder mBinder; 3523 final int mPid; 3524 final int mUid; 3525 final Messenger messenger; 3526 final boolean isRequest; 3527 3528 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3529 request = r; 3530 mPendingIntent = pi; 3531 messenger = null; 3532 mBinder = null; 3533 mPid = getCallingPid(); 3534 mUid = getCallingUid(); 3535 this.isRequest = isRequest; 3536 } 3537 3538 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3539 super(); 3540 messenger = m; 3541 request = r; 3542 mBinder = binder; 3543 mPid = getCallingPid(); 3544 mUid = getCallingUid(); 3545 this.isRequest = isRequest; 3546 mPendingIntent = null; 3547 3548 try { 3549 mBinder.linkToDeath(this, 0); 3550 } catch (RemoteException e) { 3551 binderDied(); 3552 } 3553 } 3554 3555 void unlinkDeathRecipient() { 3556 if (mBinder != null) { 3557 mBinder.unlinkToDeath(this, 0); 3558 } 3559 } 3560 3561 public void binderDied() { 3562 log("ConnectivityService NetworkRequestInfo binderDied(" + 3563 request + ", " + mBinder + ")"); 3564 releaseNetworkRequest(request); 3565 } 3566 3567 public String toString() { 3568 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3569 mPid + " for " + request + 3570 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3571 } 3572 } 3573 3574 @Override 3575 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3576 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3577 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3578 enforceNetworkRequestPermissions(networkCapabilities); 3579 enforceMeteredApnPolicy(networkCapabilities); 3580 3581 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3582 throw new IllegalArgumentException("Bad timeout specified"); 3583 } 3584 3585 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3586 nextNetworkRequestId()); 3587 if (DBG) log("requestNetwork for " + networkRequest); 3588 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3589 NetworkRequestInfo.REQUEST); 3590 3591 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3592 if (timeoutMs > 0) { 3593 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3594 nri), timeoutMs); 3595 } 3596 return networkRequest; 3597 } 3598 3599 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3600 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3601 enforceConnectivityInternalPermission(); 3602 } else { 3603 enforceChangePermission(); 3604 } 3605 } 3606 3607 @Override 3608 public boolean requestBandwidthUpdate(Network network) { 3609 enforceAccessPermission(); 3610 NetworkAgentInfo nai = null; 3611 if (network == null) { 3612 return false; 3613 } 3614 synchronized (mNetworkForNetId) { 3615 nai = mNetworkForNetId.get(network.netId); 3616 } 3617 if (nai != null) { 3618 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3619 return true; 3620 } 3621 return false; 3622 } 3623 3624 3625 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3626 // if UID is restricted, don't allow them to bring up metered APNs 3627 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3628 final int uidRules; 3629 final int uid = Binder.getCallingUid(); 3630 synchronized(mRulesLock) { 3631 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3632 } 3633 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3634 // we could silently fail or we can filter the available nets to only give 3635 // them those they have access to. Chose the more useful 3636 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3637 } 3638 } 3639 } 3640 3641 @Override 3642 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3643 PendingIntent operation) { 3644 checkNotNull(operation, "PendingIntent cannot be null."); 3645 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3646 enforceNetworkRequestPermissions(networkCapabilities); 3647 enforceMeteredApnPolicy(networkCapabilities); 3648 3649 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3650 nextNetworkRequestId()); 3651 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3652 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3653 NetworkRequestInfo.REQUEST); 3654 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3655 nri)); 3656 return networkRequest; 3657 } 3658 3659 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3660 mHandler.sendMessageDelayed( 3661 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3662 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3663 } 3664 3665 @Override 3666 public void releasePendingNetworkRequest(PendingIntent operation) { 3667 checkNotNull(operation, "PendingIntent cannot be null."); 3668 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3669 getCallingUid(), 0, operation)); 3670 } 3671 3672 // In order to implement the compatibility measure for pre-M apps that call 3673 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3674 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3675 // This ensures it has permission to do so. 3676 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3677 if (nc == null) { 3678 return false; 3679 } 3680 int[] transportTypes = nc.getTransportTypes(); 3681 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3682 return false; 3683 } 3684 try { 3685 mContext.enforceCallingOrSelfPermission( 3686 android.Manifest.permission.ACCESS_WIFI_STATE, 3687 "ConnectivityService"); 3688 } catch (SecurityException e) { 3689 return false; 3690 } 3691 return true; 3692 } 3693 3694 @Override 3695 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3696 Messenger messenger, IBinder binder) { 3697 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3698 enforceAccessPermission(); 3699 } 3700 3701 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3702 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3703 if (DBG) log("listenForNetwork for " + networkRequest); 3704 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3705 NetworkRequestInfo.LISTEN); 3706 3707 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3708 return networkRequest; 3709 } 3710 3711 @Override 3712 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3713 PendingIntent operation) { 3714 checkNotNull(operation, "PendingIntent cannot be null."); 3715 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3716 enforceAccessPermission(); 3717 } 3718 3719 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3720 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3721 if (DBG) log("pendingListenForNetwork for " + networkRequest + " to trigger " + operation); 3722 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3723 NetworkRequestInfo.LISTEN); 3724 3725 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3726 } 3727 3728 @Override 3729 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3730 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3731 0, networkRequest)); 3732 } 3733 3734 @Override 3735 public void registerNetworkFactory(Messenger messenger, String name) { 3736 enforceConnectivityInternalPermission(); 3737 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3738 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3739 } 3740 3741 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3742 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3743 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3744 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3745 } 3746 3747 @Override 3748 public void unregisterNetworkFactory(Messenger messenger) { 3749 enforceConnectivityInternalPermission(); 3750 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3751 } 3752 3753 private void handleUnregisterNetworkFactory(Messenger messenger) { 3754 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3755 if (nfi == null) { 3756 loge("Failed to find Messenger in unregisterNetworkFactory"); 3757 return; 3758 } 3759 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3760 } 3761 3762 /** 3763 * NetworkAgentInfo supporting a request by requestId. 3764 * These have already been vetted (their Capabilities satisfy the request) 3765 * and the are the highest scored network available. 3766 * the are keyed off the Requests requestId. 3767 */ 3768 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3769 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3770 new SparseArray<NetworkAgentInfo>(); 3771 3772 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3773 @GuardedBy("mNetworkForNetId") 3774 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3775 new SparseArray<NetworkAgentInfo>(); 3776 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3777 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3778 // there may not be a strict 1:1 correlation between the two. 3779 @GuardedBy("mNetworkForNetId") 3780 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3781 3782 // NetworkAgentInfo keyed off its connecting messenger 3783 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3784 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3785 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3786 new HashMap<Messenger, NetworkAgentInfo>(); 3787 3788 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3789 private final NetworkRequest mDefaultRequest; 3790 3791 // Request used to optionally keep mobile data active even when higher 3792 // priority networks like Wi-Fi are active. 3793 private final NetworkRequest mDefaultMobileDataRequest; 3794 3795 private NetworkAgentInfo getDefaultNetwork() { 3796 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3797 } 3798 3799 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3800 return nai == getDefaultNetwork(); 3801 } 3802 3803 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3804 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3805 int currentScore, NetworkMisc networkMisc) { 3806 enforceConnectivityInternalPermission(); 3807 3808 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3809 // satisfies mDefaultRequest. 3810 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3811 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3812 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3813 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3814 synchronized (this) { 3815 nai.networkMonitor.systemReady = mSystemReady; 3816 } 3817 if (DBG) log("registerNetworkAgent " + nai); 3818 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3819 return nai.network.netId; 3820 } 3821 3822 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3823 if (VDBG) log("Got NetworkAgent Messenger"); 3824 mNetworkAgentInfos.put(na.messenger, na); 3825 synchronized (mNetworkForNetId) { 3826 mNetworkForNetId.put(na.network.netId, na); 3827 } 3828 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3829 NetworkInfo networkInfo = na.networkInfo; 3830 na.networkInfo = null; 3831 updateNetworkInfo(na, networkInfo); 3832 } 3833 3834 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3835 LinkProperties newLp = networkAgent.linkProperties; 3836 int netId = networkAgent.network.netId; 3837 3838 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3839 // we do anything else, make sure its LinkProperties are accurate. 3840 if (networkAgent.clatd != null) { 3841 networkAgent.clatd.fixupLinkProperties(oldLp); 3842 } 3843 3844 updateInterfaces(newLp, oldLp, netId); 3845 updateMtu(newLp, oldLp); 3846 // TODO - figure out what to do for clat 3847// for (LinkProperties lp : newLp.getStackedLinks()) { 3848// updateMtu(lp, null); 3849// } 3850 updateTcpBufferSizes(networkAgent); 3851 3852 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3853 // In L, we used it only when the network had Internet access but provided no DNS servers. 3854 // For now, just disable it, and if disabling it doesn't break things, remove it. 3855 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3856 // NET_CAPABILITY_INTERNET); 3857 final boolean useDefaultDns = false; 3858 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3859 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3860 3861 updateClat(newLp, oldLp, networkAgent); 3862 if (isDefaultNetwork(networkAgent)) { 3863 handleApplyDefaultProxy(newLp.getHttpProxy()); 3864 } else { 3865 updateProxy(newLp, oldLp, networkAgent); 3866 } 3867 // TODO - move this check to cover the whole function 3868 if (!Objects.equals(newLp, oldLp)) { 3869 notifyIfacesChanged(); 3870 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3871 } 3872 } 3873 3874 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3875 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3876 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3877 3878 if (!wasRunningClat && shouldRunClat) { 3879 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3880 nai.clatd.start(); 3881 } else if (wasRunningClat && !shouldRunClat) { 3882 nai.clatd.stop(); 3883 } 3884 } 3885 3886 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3887 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3888 if (oldLp != null) { 3889 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3890 } else if (newLp != null) { 3891 interfaceDiff.added = newLp.getAllInterfaceNames(); 3892 } 3893 for (String iface : interfaceDiff.added) { 3894 try { 3895 if (DBG) log("Adding iface " + iface + " to network " + netId); 3896 mNetd.addInterfaceToNetwork(iface, netId); 3897 } catch (Exception e) { 3898 loge("Exception adding interface: " + e); 3899 } 3900 } 3901 for (String iface : interfaceDiff.removed) { 3902 try { 3903 if (DBG) log("Removing iface " + iface + " from network " + netId); 3904 mNetd.removeInterfaceFromNetwork(iface, netId); 3905 } catch (Exception e) { 3906 loge("Exception removing interface: " + e); 3907 } 3908 } 3909 } 3910 3911 /** 3912 * Have netd update routes from oldLp to newLp. 3913 * @return true if routes changed between oldLp and newLp 3914 */ 3915 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3916 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3917 if (oldLp != null) { 3918 routeDiff = oldLp.compareAllRoutes(newLp); 3919 } else if (newLp != null) { 3920 routeDiff.added = newLp.getAllRoutes(); 3921 } 3922 3923 // add routes before removing old in case it helps with continuous connectivity 3924 3925 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3926 for (RouteInfo route : routeDiff.added) { 3927 if (route.hasGateway()) continue; 3928 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3929 try { 3930 mNetd.addRoute(netId, route); 3931 } catch (Exception e) { 3932 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3933 loge("Exception in addRoute for non-gateway: " + e); 3934 } 3935 } 3936 } 3937 for (RouteInfo route : routeDiff.added) { 3938 if (route.hasGateway() == false) continue; 3939 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3940 try { 3941 mNetd.addRoute(netId, route); 3942 } catch (Exception e) { 3943 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3944 loge("Exception in addRoute for gateway: " + e); 3945 } 3946 } 3947 } 3948 3949 for (RouteInfo route : routeDiff.removed) { 3950 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3951 try { 3952 mNetd.removeRoute(netId, route); 3953 } catch (Exception e) { 3954 loge("Exception in removeRoute: " + e); 3955 } 3956 } 3957 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3958 } 3959 3960 // TODO: investigate moving this into LinkProperties, if only to make more accurate 3961 // the isProvisioned() checks. 3962 private static Collection<InetAddress> getLikelyReachableDnsServers(LinkProperties lp) { 3963 final ArrayList<InetAddress> dnsServers = new ArrayList<InetAddress>(); 3964 final List<RouteInfo> allRoutes = lp.getAllRoutes(); 3965 for (InetAddress nameserver : lp.getDnsServers()) { 3966 // If the LinkProperties doesn't include a route to the nameserver, ignore it. 3967 final RouteInfo bestRoute = RouteInfo.selectBestRoute(allRoutes, nameserver); 3968 if (bestRoute == null) { 3969 continue; 3970 } 3971 3972 // TODO: better source address evaluation for destination addresses. 3973 if (nameserver instanceof Inet4Address) { 3974 if (!lp.hasIPv4Address()) { 3975 continue; 3976 } 3977 } else if (nameserver instanceof Inet6Address) { 3978 if (nameserver.isLinkLocalAddress()) { 3979 if (((Inet6Address)nameserver).getScopeId() == 0) { 3980 // For now, just make sure link-local DNS servers have 3981 // scopedIds set, since DNS lookups will fail otherwise. 3982 // TODO: verify the scopeId matches that of lp's interface. 3983 continue; 3984 } 3985 } else { 3986 if (bestRoute.isIPv6Default() && !lp.hasGlobalIPv6Address()) { 3987 // TODO: reconsider all corner cases (disconnected ULA networks, ...). 3988 continue; 3989 } 3990 } 3991 } 3992 3993 dnsServers.add(nameserver); 3994 } 3995 return Collections.unmodifiableList(dnsServers); 3996 } 3997 3998 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3999 boolean flush, boolean useDefaultDns) { 4000 // TODO: consider comparing the getLikelyReachableDnsServers() lists, in case the 4001 // route to a DNS server has been removed (only really applicable in special cases 4002 // where there is no default route). 4003 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4004 Collection<InetAddress> dnses = getLikelyReachableDnsServers(newLp); 4005 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4006 dnses = new ArrayList(); 4007 dnses.add(mDefaultDns); 4008 if (DBG) { 4009 loge("no dns provided for netId " + netId + ", so using defaults"); 4010 } 4011 } 4012 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4013 try { 4014 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4015 newLp.getDomains()); 4016 } catch (Exception e) { 4017 loge("Exception in setDnsServersForNetwork: " + e); 4018 } 4019 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4020 if (defaultNai != null && defaultNai.network.netId == netId) { 4021 setDefaultDnsSystemProperties(dnses); 4022 } 4023 flushVmDnsCache(); 4024 } else if (flush) { 4025 try { 4026 mNetd.flushNetworkDnsCache(netId); 4027 } catch (Exception e) { 4028 loge("Exception in flushNetworkDnsCache: " + e); 4029 } 4030 flushVmDnsCache(); 4031 } 4032 } 4033 4034 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4035 int last = 0; 4036 for (InetAddress dns : dnses) { 4037 ++last; 4038 String key = "net.dns" + last; 4039 String value = dns.getHostAddress(); 4040 SystemProperties.set(key, value); 4041 } 4042 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4043 String key = "net.dns" + i; 4044 SystemProperties.set(key, ""); 4045 } 4046 mNumDnsEntries = last; 4047 } 4048 4049 private void updateCapabilities(NetworkAgentInfo networkAgent, 4050 NetworkCapabilities networkCapabilities) { 4051 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4052 synchronized (networkAgent) { 4053 networkAgent.networkCapabilities = networkCapabilities; 4054 } 4055 if (networkAgent.lastValidated) { 4056 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4057 // There's no need to remove the capability if we think the network is unvalidated, 4058 // because NetworkAgents don't set the validated capability. 4059 } 4060 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 4061 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4062 } 4063 } 4064 4065 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4066 for (int i = 0; i < nai.networkRequests.size(); i++) { 4067 NetworkRequest nr = nai.networkRequests.valueAt(i); 4068 // Don't send listening requests to factories. b/17393458 4069 if (!isRequest(nr)) continue; 4070 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4071 } 4072 } 4073 4074 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4075 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4076 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4077 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4078 networkRequest); 4079 } 4080 } 4081 4082 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4083 int notificationType) { 4084 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4085 Intent intent = new Intent(); 4086 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4087 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4088 nri.mPendingIntentSent = true; 4089 sendIntent(nri.mPendingIntent, intent); 4090 } 4091 // else not handled 4092 } 4093 4094 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4095 mPendingIntentWakeLock.acquire(); 4096 try { 4097 if (DBG) log("Sending " + pendingIntent); 4098 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4099 } catch (PendingIntent.CanceledException e) { 4100 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4101 mPendingIntentWakeLock.release(); 4102 releasePendingNetworkRequest(pendingIntent); 4103 } 4104 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4105 } 4106 4107 @Override 4108 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4109 String resultData, Bundle resultExtras) { 4110 if (DBG) log("Finished sending " + pendingIntent); 4111 mPendingIntentWakeLock.release(); 4112 // Release with a delay so the receiving client has an opportunity to put in its 4113 // own request. 4114 releasePendingNetworkRequestWithDelay(pendingIntent); 4115 } 4116 4117 private void callCallbackForRequest(NetworkRequestInfo nri, 4118 NetworkAgentInfo networkAgent, int notificationType) { 4119 if (nri.messenger == null) return; // Default request has no msgr 4120 Bundle bundle = new Bundle(); 4121 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4122 new NetworkRequest(nri.request)); 4123 Message msg = Message.obtain(); 4124 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4125 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4126 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4127 } 4128 switch (notificationType) { 4129 case ConnectivityManager.CALLBACK_LOSING: { 4130 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4131 break; 4132 } 4133 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4134 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4135 new NetworkCapabilities(networkAgent.networkCapabilities)); 4136 break; 4137 } 4138 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4139 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4140 new LinkProperties(networkAgent.linkProperties)); 4141 break; 4142 } 4143 } 4144 msg.what = notificationType; 4145 msg.setData(bundle); 4146 try { 4147 if (VDBG) { 4148 log("sending notification " + notifyTypeToName(notificationType) + 4149 " for " + nri.request); 4150 } 4151 nri.messenger.send(msg); 4152 } catch (RemoteException e) { 4153 // may occur naturally in the race of binder death. 4154 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4155 } 4156 } 4157 4158 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4159 for (int i = 0; i < nai.networkRequests.size(); i++) { 4160 NetworkRequest nr = nai.networkRequests.valueAt(i); 4161 // Ignore listening requests. 4162 if (!isRequest(nr)) continue; 4163 loge("Dead network still had at least " + nr); 4164 break; 4165 } 4166 nai.asyncChannel.disconnect(); 4167 } 4168 4169 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4170 if (oldNetwork == null) { 4171 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4172 return; 4173 } 4174 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4175 teardownUnneededNetwork(oldNetwork); 4176 } 4177 4178 private void makeDefault(NetworkAgentInfo newNetwork) { 4179 if (DBG) log("Switching to new default network: " + newNetwork); 4180 setupDataActivityTracking(newNetwork); 4181 try { 4182 mNetd.setDefaultNetId(newNetwork.network.netId); 4183 } catch (Exception e) { 4184 loge("Exception setting default network :" + e); 4185 } 4186 notifyLockdownVpn(newNetwork); 4187 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4188 updateTcpBufferSizes(newNetwork); 4189 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4190 } 4191 4192 // Handles a network appearing or improving its score. 4193 // 4194 // - Evaluates all current NetworkRequests that can be 4195 // satisfied by newNetwork, and reassigns to newNetwork 4196 // any such requests for which newNetwork is the best. 4197 // 4198 // - Lingers any validated Networks that as a result are no longer 4199 // needed. A network is needed if it is the best network for 4200 // one or more NetworkRequests, or if it is a VPN. 4201 // 4202 // - Tears down newNetwork if it just became validated 4203 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4204 // 4205 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4206 // networks that have no chance (i.e. even if validated) 4207 // of becoming the highest scoring network. 4208 // 4209 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4210 // it does not remove NetworkRequests that other Networks could better satisfy. 4211 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4212 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4213 // as it performs better by a factor of the number of Networks. 4214 // 4215 // @param newNetwork is the network to be matched against NetworkRequests. 4216 // @param nascent indicates if newNetwork just became validated, in which case it should be 4217 // torn down if unneeded. 4218 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4219 // performed to tear down unvalidated networks that have no chance (i.e. even if 4220 // validated) of becoming the highest scoring network. 4221 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4222 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4223 if (!newNetwork.created) return; 4224 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4225 loge("ERROR: nascent network not validated."); 4226 } 4227 boolean keep = newNetwork.isVPN(); 4228 boolean isNewDefault = false; 4229 NetworkAgentInfo oldDefaultNetwork = null; 4230 if (DBG) log("rematching " + newNetwork.name()); 4231 // Find and migrate to this Network any NetworkRequests for 4232 // which this network is now the best. 4233 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4234 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4235 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4236 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4237 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4238 if (newNetwork == currentNetwork) { 4239 if (DBG) { 4240 log("Network " + newNetwork.name() + " was already satisfying" + 4241 " request " + nri.request.requestId + ". No change."); 4242 } 4243 keep = true; 4244 continue; 4245 } 4246 4247 // check if it satisfies the NetworkCapabilities 4248 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4249 if (newNetwork.satisfies(nri.request)) { 4250 if (!nri.isRequest) { 4251 // This is not a request, it's a callback listener. 4252 // Add it to newNetwork regardless of score. 4253 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4254 continue; 4255 } 4256 4257 // next check if it's better than any current network we're using for 4258 // this request 4259 if (VDBG) { 4260 log("currentScore = " + 4261 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4262 ", newScore = " + newNetwork.getCurrentScore()); 4263 } 4264 if (currentNetwork == null || 4265 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4266 if (currentNetwork != null) { 4267 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4268 currentNetwork.networkRequests.remove(nri.request.requestId); 4269 currentNetwork.networkLingered.add(nri.request); 4270 affectedNetworks.add(currentNetwork); 4271 } else { 4272 if (DBG) log(" accepting network in place of null"); 4273 } 4274 unlinger(newNetwork); 4275 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4276 if (!newNetwork.addRequest(nri.request)) { 4277 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4278 } 4279 addedRequests.add(nri); 4280 keep = true; 4281 // Tell NetworkFactories about the new score, so they can stop 4282 // trying to connect if they know they cannot match it. 4283 // TODO - this could get expensive if we have alot of requests for this 4284 // network. Think about if there is a way to reduce this. Push 4285 // netid->request mapping to each factory? 4286 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4287 if (mDefaultRequest.requestId == nri.request.requestId) { 4288 isNewDefault = true; 4289 oldDefaultNetwork = currentNetwork; 4290 } 4291 } 4292 } 4293 } 4294 // Linger any networks that are no longer needed. 4295 for (NetworkAgentInfo nai : affectedNetworks) { 4296 if (nai.everValidated && unneeded(nai)) { 4297 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4298 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4299 } else { 4300 unlinger(nai); 4301 } 4302 } 4303 if (keep) { 4304 if (isNewDefault) { 4305 // Notify system services that this network is up. 4306 makeDefault(newNetwork); 4307 synchronized (ConnectivityService.this) { 4308 // have a new default network, release the transition wakelock in 4309 // a second if it's held. The second pause is to allow apps 4310 // to reconnect over the new network 4311 if (mNetTransitionWakeLock.isHeld()) { 4312 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4313 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4314 mNetTransitionWakeLockSerialNumber, 0), 4315 1000); 4316 } 4317 } 4318 } 4319 4320 // do this after the default net is switched, but 4321 // before LegacyTypeTracker sends legacy broadcasts 4322 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4323 4324 if (isNewDefault) { 4325 // Maintain the illusion: since the legacy API only 4326 // understands one network at a time, we must pretend 4327 // that the current default network disconnected before 4328 // the new one connected. 4329 if (oldDefaultNetwork != null) { 4330 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4331 oldDefaultNetwork, true); 4332 } 4333 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4334 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4335 notifyLockdownVpn(newNetwork); 4336 } 4337 4338 // Notify battery stats service about this network, both the normal 4339 // interface and any stacked links. 4340 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4341 try { 4342 final IBatteryStats bs = BatteryStatsService.getService(); 4343 final int type = newNetwork.networkInfo.getType(); 4344 4345 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4346 bs.noteNetworkInterfaceType(baseIface, type); 4347 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4348 final String stackedIface = stacked.getInterfaceName(); 4349 bs.noteNetworkInterfaceType(stackedIface, type); 4350 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4351 } 4352 } catch (RemoteException ignored) { 4353 } 4354 4355 // This has to happen after the notifyNetworkCallbacks as that tickles each 4356 // ConnectivityManager instance so that legacy requests correctly bind dns 4357 // requests to this network. The legacy users are listening for this bcast 4358 // and will generally do a dns request so they can ensureRouteToHost and if 4359 // they do that before the callbacks happen they'll use the default network. 4360 // 4361 // TODO: Is there still a race here? We send the broadcast 4362 // after sending the callback, but if the app can receive the 4363 // broadcast before the callback, it might still break. 4364 // 4365 // This *does* introduce a race where if the user uses the new api 4366 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4367 // they may get old info. Reverse this after the old startUsing api is removed. 4368 // This is on top of the multiple intent sequencing referenced in the todo above. 4369 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4370 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4371 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4372 // legacy type tracker filters out repeat adds 4373 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4374 } 4375 } 4376 4377 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4378 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4379 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4380 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4381 if (newNetwork.isVPN()) { 4382 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4383 } 4384 } else if (nascent == NascentState.JUST_VALIDATED) { 4385 // Only tear down newly validated networks here. Leave unvalidated to either become 4386 // validated (and get evaluated against peers, one losing here), or get reaped (see 4387 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4388 // network. Networks that have been up for a while and are validated should be torn 4389 // down via the lingering process so communication on that network is given time to 4390 // wrap up. 4391 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4392 teardownUnneededNetwork(newNetwork); 4393 } 4394 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4395 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4396 if (!nai.everValidated && unneeded(nai)) { 4397 if (DBG) log("Reaping " + nai.name()); 4398 teardownUnneededNetwork(nai); 4399 } 4400 } 4401 } 4402 } 4403 4404 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4405 // being disconnected. 4406 // If only one Network's score or capabilities have been modified since the last time 4407 // this function was called, pass this Network in via the "changed" arugment, otherwise 4408 // pass null. 4409 // If only one Network has been changed but its NetworkCapabilities have not changed, 4410 // pass in the Network's score (from getCurrentScore()) prior to the change via 4411 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4412 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4413 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4414 // to avoid the slowness. It is not simply enough to process just "changed", for 4415 // example in the case where "changed"'s score decreases and another network should begin 4416 // satifying a NetworkRequest that "changed" currently satisfies. 4417 4418 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4419 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4420 // rematchNetworkAndRequests() handles. 4421 if (changed != null && oldScore < changed.getCurrentScore()) { 4422 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4423 ReapUnvalidatedNetworks.REAP); 4424 } else { 4425 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4426 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4427 NascentState.NOT_JUST_VALIDATED, 4428 // Only reap the last time through the loop. Reaping before all rematching 4429 // is complete could incorrectly teardown a network that hasn't yet been 4430 // rematched. 4431 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4432 : ReapUnvalidatedNetworks.REAP); 4433 } 4434 } 4435 } 4436 4437 private void updateInetCondition(NetworkAgentInfo nai) { 4438 // Don't bother updating until we've graduated to validated at least once. 4439 if (!nai.everValidated) return; 4440 // For now only update icons for default connection. 4441 // TODO: Update WiFi and cellular icons separately. b/17237507 4442 if (!isDefaultNetwork(nai)) return; 4443 4444 int newInetCondition = nai.lastValidated ? 100 : 0; 4445 // Don't repeat publish. 4446 if (newInetCondition == mDefaultInetConditionPublished) return; 4447 4448 mDefaultInetConditionPublished = newInetCondition; 4449 sendInetConditionBroadcast(nai.networkInfo); 4450 } 4451 4452 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4453 if (mLockdownTracker != null) { 4454 if (nai != null && nai.isVPN()) { 4455 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4456 } else { 4457 mLockdownTracker.onNetworkInfoChanged(); 4458 } 4459 } 4460 } 4461 4462 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4463 NetworkInfo.State state = newInfo.getState(); 4464 NetworkInfo oldInfo = null; 4465 synchronized (networkAgent) { 4466 oldInfo = networkAgent.networkInfo; 4467 networkAgent.networkInfo = newInfo; 4468 } 4469 notifyLockdownVpn(networkAgent); 4470 4471 if (oldInfo != null && oldInfo.getState() == state) { 4472 if (VDBG) log("ignoring duplicate network state non-change"); 4473 return; 4474 } 4475 if (DBG) { 4476 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4477 (oldInfo == null ? "null" : oldInfo.getState()) + 4478 " to " + state); 4479 } 4480 4481 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4482 try { 4483 // This should never fail. Specifying an already in use NetID will cause failure. 4484 if (networkAgent.isVPN()) { 4485 mNetd.createVirtualNetwork(networkAgent.network.netId, 4486 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4487 (networkAgent.networkMisc == null || 4488 !networkAgent.networkMisc.allowBypass)); 4489 } else { 4490 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4491 } 4492 } catch (Exception e) { 4493 loge("Error creating network " + networkAgent.network.netId + ": " 4494 + e.getMessage()); 4495 return; 4496 } 4497 networkAgent.created = true; 4498 updateLinkProperties(networkAgent, null); 4499 notifyIfacesChanged(); 4500 4501 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4502 scheduleUnvalidatedPrompt(networkAgent); 4503 4504 if (networkAgent.isVPN()) { 4505 // Temporarily disable the default proxy (not global). 4506 synchronized (mProxyLock) { 4507 if (!mDefaultProxyDisabled) { 4508 mDefaultProxyDisabled = true; 4509 if (mGlobalProxy == null && mDefaultProxy != null) { 4510 sendProxyBroadcast(null); 4511 } 4512 } 4513 } 4514 // TODO: support proxy per network. 4515 } 4516 4517 // Consider network even though it is not yet validated. 4518 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4519 ReapUnvalidatedNetworks.REAP); 4520 4521 // This has to happen after matching the requests, because callbacks are just requests. 4522 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4523 } else if (state == NetworkInfo.State.DISCONNECTED || 4524 state == NetworkInfo.State.SUSPENDED) { 4525 networkAgent.asyncChannel.disconnect(); 4526 if (networkAgent.isVPN()) { 4527 synchronized (mProxyLock) { 4528 if (mDefaultProxyDisabled) { 4529 mDefaultProxyDisabled = false; 4530 if (mGlobalProxy == null && mDefaultProxy != null) { 4531 sendProxyBroadcast(mDefaultProxy); 4532 } 4533 } 4534 } 4535 } 4536 } 4537 } 4538 4539 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4540 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4541 if (score < 0) { 4542 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4543 "). Bumping score to min of 0"); 4544 score = 0; 4545 } 4546 4547 final int oldScore = nai.getCurrentScore(); 4548 nai.setCurrentScore(score); 4549 4550 rematchAllNetworksAndRequests(nai, oldScore); 4551 4552 sendUpdatedScoreToFactories(nai); 4553 } 4554 4555 // notify only this one new request of the current state 4556 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4557 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4558 // TODO - read state from monitor to decide what to send. 4559// if (nai.networkMonitor.isLingering()) { 4560// notifyType = NetworkCallbacks.LOSING; 4561// } else if (nai.networkMonitor.isEvaluating()) { 4562// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4563// } 4564 if (nri.mPendingIntent == null) { 4565 callCallbackForRequest(nri, nai, notifyType); 4566 } else { 4567 sendPendingIntentForRequest(nri, nai, notifyType); 4568 } 4569 } 4570 4571 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4572 // The NetworkInfo we actually send out has no bearing on the real 4573 // state of affairs. For example, if the default connection is mobile, 4574 // and a request for HIPRI has just gone away, we need to pretend that 4575 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4576 // the state to DISCONNECTED, even though the network is of type MOBILE 4577 // and is still connected. 4578 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4579 info.setType(type); 4580 if (connected) { 4581 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4582 sendConnectedBroadcast(info); 4583 } else { 4584 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4585 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4586 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4587 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4588 if (info.isFailover()) { 4589 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4590 nai.networkInfo.setFailover(false); 4591 } 4592 if (info.getReason() != null) { 4593 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4594 } 4595 if (info.getExtraInfo() != null) { 4596 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4597 } 4598 NetworkAgentInfo newDefaultAgent = null; 4599 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4600 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4601 if (newDefaultAgent != null) { 4602 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4603 newDefaultAgent.networkInfo); 4604 } else { 4605 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4606 } 4607 } 4608 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4609 mDefaultInetConditionPublished); 4610 sendStickyBroadcast(intent); 4611 if (newDefaultAgent != null) { 4612 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4613 } 4614 } 4615 } 4616 4617 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4618 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4619 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4620 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4621 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4622 if (VDBG) log(" sending notification for " + nr); 4623 if (nri.mPendingIntent == null) { 4624 callCallbackForRequest(nri, networkAgent, notifyType); 4625 } else { 4626 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4627 } 4628 } 4629 } 4630 4631 private String notifyTypeToName(int notifyType) { 4632 switch (notifyType) { 4633 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4634 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4635 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4636 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4637 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4638 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4639 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4640 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4641 } 4642 return "UNKNOWN"; 4643 } 4644 4645 /** 4646 * Notify other system services that set of active ifaces has changed. 4647 */ 4648 private void notifyIfacesChanged() { 4649 try { 4650 mStatsService.forceUpdateIfaces(); 4651 } catch (Exception ignored) { 4652 } 4653 } 4654 4655 @Override 4656 public boolean addVpnAddress(String address, int prefixLength) { 4657 throwIfLockdownEnabled(); 4658 int user = UserHandle.getUserId(Binder.getCallingUid()); 4659 synchronized (mVpns) { 4660 return mVpns.get(user).addAddress(address, prefixLength); 4661 } 4662 } 4663 4664 @Override 4665 public boolean removeVpnAddress(String address, int prefixLength) { 4666 throwIfLockdownEnabled(); 4667 int user = UserHandle.getUserId(Binder.getCallingUid()); 4668 synchronized (mVpns) { 4669 return mVpns.get(user).removeAddress(address, prefixLength); 4670 } 4671 } 4672 4673 @Override 4674 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4675 throwIfLockdownEnabled(); 4676 int user = UserHandle.getUserId(Binder.getCallingUid()); 4677 boolean success; 4678 synchronized (mVpns) { 4679 success = mVpns.get(user).setUnderlyingNetworks(networks); 4680 } 4681 if (success) { 4682 notifyIfacesChanged(); 4683 } 4684 return success; 4685 } 4686 4687 @Override 4688 public void factoryReset() { 4689 enforceConnectivityInternalPermission(); 4690 4691 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4692 return; 4693 } 4694 4695 final int userId = UserHandle.getCallingUserId(); 4696 4697 // Turn airplane mode off 4698 setAirplaneMode(false); 4699 4700 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4701 // Untether 4702 for (String tether : getTetheredIfaces()) { 4703 untether(tether); 4704 } 4705 } 4706 4707 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4708 // Turn VPN off 4709 VpnConfig vpnConfig = getVpnConfig(userId); 4710 if (vpnConfig != null) { 4711 if (vpnConfig.legacy) { 4712 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4713 } else { 4714 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4715 // in the future without user intervention. 4716 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4717 4718 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4719 } 4720 } 4721 } 4722 } 4723} 4724