ConnectivityService.java revision 694f2b847232c66c64a42aa1002c8e5b652342e0
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 30import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 31import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 33 34import android.annotation.Nullable; 35import android.app.AlarmManager; 36import android.app.Notification; 37import android.app.NotificationManager; 38import android.app.PendingIntent; 39import android.content.BroadcastReceiver; 40import android.content.ContentResolver; 41import android.content.Context; 42import android.content.Intent; 43import android.content.IntentFilter; 44import android.content.pm.PackageManager; 45import android.content.res.Configuration; 46import android.content.res.Resources; 47import android.database.ContentObserver; 48import android.net.ConnectivityManager; 49import android.net.IConnectivityManager; 50import android.net.INetworkManagementEventObserver; 51import android.net.INetworkPolicyListener; 52import android.net.INetworkPolicyManager; 53import android.net.INetworkStatsService; 54import android.net.LinkProperties; 55import android.net.LinkProperties.CompareResult; 56import android.net.Network; 57import android.net.NetworkAgent; 58import android.net.NetworkCapabilities; 59import android.net.NetworkConfig; 60import android.net.NetworkInfo; 61import android.net.NetworkInfo.DetailedState; 62import android.net.NetworkMisc; 63import android.net.NetworkQuotaInfo; 64import android.net.NetworkRequest; 65import android.net.NetworkState; 66import android.net.NetworkUtils; 67import android.net.Proxy; 68import android.net.ProxyInfo; 69import android.net.RouteInfo; 70import android.net.UidRange; 71import android.net.Uri; 72import android.os.Binder; 73import android.os.Bundle; 74import android.os.FileUtils; 75import android.os.Handler; 76import android.os.HandlerThread; 77import android.os.IBinder; 78import android.os.INetworkManagementService; 79import android.os.Looper; 80import android.os.Message; 81import android.os.Messenger; 82import android.os.ParcelFileDescriptor; 83import android.os.PowerManager; 84import android.os.Process; 85import android.os.RemoteException; 86import android.os.SystemClock; 87import android.os.SystemProperties; 88import android.os.UserHandle; 89import android.os.UserManager; 90import android.provider.Settings; 91import android.security.Credentials; 92import android.security.KeyStore; 93import android.telephony.TelephonyManager; 94import android.text.TextUtils; 95import android.util.Slog; 96import android.util.SparseArray; 97import android.util.SparseBooleanArray; 98import android.util.SparseIntArray; 99import android.util.Xml; 100 101import com.android.internal.R; 102import com.android.internal.annotations.GuardedBy; 103import com.android.internal.annotations.VisibleForTesting; 104import com.android.internal.app.IBatteryStats; 105import com.android.internal.net.LegacyVpnInfo; 106import com.android.internal.net.NetworkStatsFactory; 107import com.android.internal.net.VpnConfig; 108import com.android.internal.net.VpnInfo; 109import com.android.internal.net.VpnProfile; 110import com.android.internal.telephony.DctConstants; 111import com.android.internal.util.AsyncChannel; 112import com.android.internal.util.IndentingPrintWriter; 113import com.android.internal.util.XmlUtils; 114import com.android.server.am.BatteryStatsService; 115import com.android.server.connectivity.DataConnectionStats; 116import com.android.server.connectivity.NetworkDiagnostics; 117import com.android.server.connectivity.Nat464Xlat; 118import com.android.server.connectivity.NetworkAgentInfo; 119import com.android.server.connectivity.NetworkMonitor; 120import com.android.server.connectivity.PacManager; 121import com.android.server.connectivity.PermissionMonitor; 122import com.android.server.connectivity.Tethering; 123import com.android.server.connectivity.Vpn; 124import com.android.server.net.BaseNetworkObserver; 125import com.android.server.net.LockdownVpnTracker; 126import com.google.android.collect.Lists; 127import com.google.android.collect.Sets; 128 129import org.xmlpull.v1.XmlPullParser; 130import org.xmlpull.v1.XmlPullParserException; 131 132import java.io.File; 133import java.io.FileDescriptor; 134import java.io.FileNotFoundException; 135import java.io.FileReader; 136import java.io.IOException; 137import java.io.PrintWriter; 138import java.net.Inet4Address; 139import java.net.InetAddress; 140import java.net.UnknownHostException; 141import java.util.ArrayList; 142import java.util.Arrays; 143import java.util.Collection; 144import java.util.HashMap; 145import java.util.HashSet; 146import java.util.Iterator; 147import java.util.List; 148import java.util.Map; 149import java.util.Objects; 150import java.util.concurrent.atomic.AtomicInteger; 151 152/** 153 * @hide 154 */ 155public class ConnectivityService extends IConnectivityManager.Stub 156 implements PendingIntent.OnFinished { 157 private static final String TAG = "ConnectivityService"; 158 159 private static final boolean DBG = true; 160 private static final boolean VDBG = false; 161 162 private static final boolean LOGD_RULES = false; 163 164 // TODO: create better separation between radio types and network types 165 166 // how long to wait before switching back to a radio's default network 167 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 168 // system property that can override the above value 169 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 170 "android.telephony.apn-restore"; 171 172 // How long to wait before putting up a "This network doesn't have an Internet connection, 173 // connect anyway?" dialog after the user selects a network that doesn't validate. 174 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 175 176 // How long to delay to removal of a pending intent based request. 177 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 178 private final int mReleasePendingIntentDelayMs; 179 180 private Tethering mTethering; 181 182 private final PermissionMonitor mPermissionMonitor; 183 184 private KeyStore mKeyStore; 185 186 @GuardedBy("mVpns") 187 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 188 189 private boolean mLockdownEnabled; 190 private LockdownVpnTracker mLockdownTracker; 191 192 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 193 private Object mRulesLock = new Object(); 194 /** Currently active network rules by UID. */ 195 private SparseIntArray mUidRules = new SparseIntArray(); 196 /** Set of ifaces that are costly. */ 197 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 198 199 final private Context mContext; 200 private int mNetworkPreference; 201 // 0 is full bad, 100 is full good 202 private int mDefaultInetConditionPublished = 0; 203 204 private int mNumDnsEntries; 205 206 private boolean mTestMode; 207 private static ConnectivityService sServiceInstance; 208 209 private INetworkManagementService mNetd; 210 private INetworkStatsService mStatsService; 211 private INetworkPolicyManager mPolicyManager; 212 213 private String mCurrentTcpBufferSizes; 214 215 private static final int ENABLED = 1; 216 private static final int DISABLED = 0; 217 218 // Arguments to rematchNetworkAndRequests() 219 private enum NascentState { 220 // Indicates a network was just validated for the first time. If the network is found to 221 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 222 JUST_VALIDATED, 223 // Indicates a network was not validated for the first time immediately prior to this call. 224 NOT_JUST_VALIDATED 225 }; 226 private enum ReapUnvalidatedNetworks { 227 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 228 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 229 // known that there may be unvalidated networks that could potentially be reaped, and when 230 // all networks have been rematched against all NetworkRequests. 231 REAP, 232 // Don't reap unvalidated networks. This should be passed when it's known that there are 233 // no unvalidated networks that could potentially be reaped, and when some networks have 234 // not yet been rematched against all NetworkRequests. 235 DONT_REAP 236 }; 237 238 /** 239 * used internally to change our mobile data enabled flag 240 */ 241 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 242 243 /** 244 * used internally to clear a wakelock when transitioning 245 * from one net to another. Clear happens when we get a new 246 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 247 * after a timeout if no network is found (typically 1 min). 248 */ 249 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 250 251 /** 252 * used internally to reload global proxy settings 253 */ 254 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 255 256 /** 257 * used internally to send a sticky broadcast delayed. 258 */ 259 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 260 261 /** 262 * PAC manager has received new port. 263 */ 264 private static final int EVENT_PROXY_HAS_CHANGED = 16; 265 266 /** 267 * used internally when registering NetworkFactories 268 * obj = NetworkFactoryInfo 269 */ 270 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 271 272 /** 273 * used internally when registering NetworkAgents 274 * obj = Messenger 275 */ 276 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 277 278 /** 279 * used to add a network request 280 * includes a NetworkRequestInfo 281 */ 282 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 283 284 /** 285 * indicates a timeout period is over - check if we had a network yet or not 286 * and if not, call the timeout calback (but leave the request live until they 287 * cancel it. 288 * includes a NetworkRequestInfo 289 */ 290 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 291 292 /** 293 * used to add a network listener - no request 294 * includes a NetworkRequestInfo 295 */ 296 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 297 298 /** 299 * used to remove a network request, either a listener or a real request 300 * arg1 = UID of caller 301 * obj = NetworkRequest 302 */ 303 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 304 305 /** 306 * used internally when registering NetworkFactories 307 * obj = Messenger 308 */ 309 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 310 311 /** 312 * used internally to expire a wakelock when transitioning 313 * from one net to another. Expire happens when we fail to find 314 * a new network (typically after 1 minute) - 315 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 316 * a replacement network. 317 */ 318 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 319 320 /** 321 * Used internally to indicate the system is ready. 322 */ 323 private static final int EVENT_SYSTEM_READY = 25; 324 325 /** 326 * used to add a network request with a pending intent 327 * obj = NetworkRequestInfo 328 */ 329 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 330 331 /** 332 * used to remove a pending intent and its associated network request. 333 * arg1 = UID of caller 334 * obj = PendingIntent 335 */ 336 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 337 338 /** 339 * used to specify whether a network should be used even if unvalidated. 340 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 341 * arg2 = whether to remember this choice in the future (1 or 0) 342 * obj = network 343 */ 344 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 345 346 /** 347 * used to ask the user to confirm a connection to an unvalidated network. 348 * obj = network 349 */ 350 private static final int EVENT_PROMPT_UNVALIDATED = 29; 351 352 /** 353 * used internally to (re)configure mobile data always-on settings. 354 */ 355 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 356 357 /** 358 * used to add a network listener with a pending intent 359 * obj = NetworkRequestInfo 360 */ 361 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 362 363 /** Handler used for internal events. */ 364 final private InternalHandler mHandler; 365 /** Handler used for incoming {@link NetworkStateTracker} events. */ 366 final private NetworkStateTrackerHandler mTrackerHandler; 367 368 private boolean mSystemReady; 369 private Intent mInitialBroadcast; 370 371 private PowerManager.WakeLock mNetTransitionWakeLock; 372 private String mNetTransitionWakeLockCausedBy = ""; 373 private int mNetTransitionWakeLockSerialNumber; 374 private int mNetTransitionWakeLockTimeout; 375 private final PowerManager.WakeLock mPendingIntentWakeLock; 376 377 private InetAddress mDefaultDns; 378 379 // used in DBG mode to track inet condition reports 380 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 381 private ArrayList mInetLog; 382 383 // track the current default http proxy - tell the world if we get a new one (real change) 384 private volatile ProxyInfo mDefaultProxy = null; 385 private Object mProxyLock = new Object(); 386 private boolean mDefaultProxyDisabled = false; 387 388 // track the global proxy. 389 private ProxyInfo mGlobalProxy = null; 390 391 private PacManager mPacManager = null; 392 393 final private SettingsObserver mSettingsObserver; 394 395 private UserManager mUserManager; 396 397 NetworkConfig[] mNetConfigs; 398 int mNetworksDefined; 399 400 // the set of network types that can only be enabled by system/sig apps 401 List mProtectedNetworks; 402 403 private DataConnectionStats mDataConnectionStats; 404 405 TelephonyManager mTelephonyManager; 406 407 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 408 private final static int MIN_NET_ID = 100; // some reserved marks 409 private final static int MAX_NET_ID = 65535; 410 private int mNextNetId = MIN_NET_ID; 411 412 // sequence number of NetworkRequests 413 private int mNextNetworkRequestId = 1; 414 415 /** 416 * Implements support for the legacy "one network per network type" model. 417 * 418 * We used to have a static array of NetworkStateTrackers, one for each 419 * network type, but that doesn't work any more now that we can have, 420 * for example, more that one wifi network. This class stores all the 421 * NetworkAgentInfo objects that support a given type, but the legacy 422 * API will only see the first one. 423 * 424 * It serves two main purposes: 425 * 426 * 1. Provide information about "the network for a given type" (since this 427 * API only supports one). 428 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 429 * the first network for a given type changes, or if the default network 430 * changes. 431 */ 432 private class LegacyTypeTracker { 433 434 private static final boolean DBG = true; 435 private static final boolean VDBG = false; 436 private static final String TAG = "CSLegacyTypeTracker"; 437 438 /** 439 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 440 * Each list holds references to all NetworkAgentInfos that are used to 441 * satisfy requests for that network type. 442 * 443 * This array is built out at startup such that an unsupported network 444 * doesn't get an ArrayList instance, making this a tristate: 445 * unsupported, supported but not active and active. 446 * 447 * The actual lists are populated when we scan the network types that 448 * are supported on this device. 449 */ 450 private ArrayList<NetworkAgentInfo> mTypeLists[]; 451 452 public LegacyTypeTracker() { 453 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 454 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 455 } 456 457 public void addSupportedType(int type) { 458 if (mTypeLists[type] != null) { 459 throw new IllegalStateException( 460 "legacy list for type " + type + "already initialized"); 461 } 462 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 463 } 464 465 public boolean isTypeSupported(int type) { 466 return isNetworkTypeValid(type) && mTypeLists[type] != null; 467 } 468 469 public NetworkAgentInfo getNetworkForType(int type) { 470 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 471 return mTypeLists[type].get(0); 472 } else { 473 return null; 474 } 475 } 476 477 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 478 boolean isDefaultNetwork) { 479 if (DBG) { 480 log("Sending " + (connected ? "connected" : "disconnected") + 481 " broadcast for type " + type + " " + nai.name() + 482 " isDefaultNetwork=" + isDefaultNetwork); 483 } 484 } 485 486 /** Adds the given network to the specified legacy type list. */ 487 public void add(int type, NetworkAgentInfo nai) { 488 if (!isTypeSupported(type)) { 489 return; // Invalid network type. 490 } 491 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 492 493 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 494 if (list.contains(nai)) { 495 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 496 return; 497 } 498 499 list.add(nai); 500 501 // Send a broadcast if this is the first network of its type or if it's the default. 502 final boolean isDefaultNetwork = isDefaultNetwork(nai); 503 if (list.size() == 1 || isDefaultNetwork) { 504 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 505 sendLegacyNetworkBroadcast(nai, true, type); 506 } 507 } 508 509 /** Removes the given network from the specified legacy type list. */ 510 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 511 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 512 if (list == null || list.isEmpty()) { 513 return; 514 } 515 516 final boolean wasFirstNetwork = list.get(0).equals(nai); 517 518 if (!list.remove(nai)) { 519 return; 520 } 521 522 if (wasFirstNetwork || wasDefault) { 523 maybeLogBroadcast(nai, false, type, wasDefault); 524 sendLegacyNetworkBroadcast(nai, false, type); 525 } 526 527 if (!list.isEmpty() && wasFirstNetwork) { 528 if (DBG) log("Other network available for type " + type + 529 ", sending connected broadcast"); 530 final NetworkAgentInfo replacement = list.get(0); 531 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 532 sendLegacyNetworkBroadcast(replacement, false, type); 533 } 534 } 535 536 /** Removes the given network from all legacy type lists. */ 537 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 538 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 539 for (int type = 0; type < mTypeLists.length; type++) { 540 remove(type, nai, wasDefault); 541 } 542 } 543 544 private String naiToString(NetworkAgentInfo nai) { 545 String name = (nai != null) ? nai.name() : "null"; 546 String state = (nai.networkInfo != null) ? 547 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 548 "???/???"; 549 return name + " " + state; 550 } 551 552 public void dump(IndentingPrintWriter pw) { 553 pw.println("mLegacyTypeTracker:"); 554 pw.increaseIndent(); 555 pw.print("Supported types:"); 556 for (int type = 0; type < mTypeLists.length; type++) { 557 if (mTypeLists[type] != null) pw.print(" " + type); 558 } 559 pw.println(); 560 pw.println("Current state:"); 561 pw.increaseIndent(); 562 for (int type = 0; type < mTypeLists.length; type++) { 563 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 564 for (NetworkAgentInfo nai : mTypeLists[type]) { 565 pw.println(type + " " + naiToString(nai)); 566 } 567 } 568 pw.decreaseIndent(); 569 pw.decreaseIndent(); 570 pw.println(); 571 } 572 573 // This class needs its own log method because it has a different TAG. 574 private void log(String s) { 575 Slog.d(TAG, s); 576 } 577 578 } 579 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 580 581 public ConnectivityService(Context context, INetworkManagementService netManager, 582 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 583 if (DBG) log("ConnectivityService starting up"); 584 585 mDefaultRequest = createInternetRequestForTransport(-1); 586 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 587 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 588 589 mDefaultMobileDataRequest = createInternetRequestForTransport( 590 NetworkCapabilities.TRANSPORT_CELLULAR); 591 592 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 593 handlerThread.start(); 594 mHandler = new InternalHandler(handlerThread.getLooper()); 595 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 596 597 // setup our unique device name 598 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 599 String id = Settings.Secure.getString(context.getContentResolver(), 600 Settings.Secure.ANDROID_ID); 601 if (id != null && id.length() > 0) { 602 String name = new String("android-").concat(id); 603 SystemProperties.set("net.hostname", name); 604 } 605 } 606 607 // read our default dns server ip 608 String dns = Settings.Global.getString(context.getContentResolver(), 609 Settings.Global.DEFAULT_DNS_SERVER); 610 if (dns == null || dns.length() == 0) { 611 dns = context.getResources().getString( 612 com.android.internal.R.string.config_default_dns_server); 613 } 614 try { 615 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 616 } catch (IllegalArgumentException e) { 617 loge("Error setting defaultDns using " + dns); 618 } 619 620 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 621 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 622 623 mContext = checkNotNull(context, "missing Context"); 624 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 625 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 626 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 627 mKeyStore = KeyStore.getInstance(); 628 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 629 630 try { 631 mPolicyManager.registerListener(mPolicyListener); 632 } catch (RemoteException e) { 633 // ouch, no rules updates means some processes may never get network 634 loge("unable to register INetworkPolicyListener" + e.toString()); 635 } 636 637 final PowerManager powerManager = (PowerManager) context.getSystemService( 638 Context.POWER_SERVICE); 639 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 640 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 641 com.android.internal.R.integer.config_networkTransitionTimeout); 642 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 643 644 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 645 646 // TODO: What is the "correct" way to do determine if this is a wifi only device? 647 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 648 log("wifiOnly=" + wifiOnly); 649 String[] naStrings = context.getResources().getStringArray( 650 com.android.internal.R.array.networkAttributes); 651 for (String naString : naStrings) { 652 try { 653 NetworkConfig n = new NetworkConfig(naString); 654 if (VDBG) log("naString=" + naString + " config=" + n); 655 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 656 loge("Error in networkAttributes - ignoring attempt to define type " + 657 n.type); 658 continue; 659 } 660 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 661 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 662 n.type); 663 continue; 664 } 665 if (mNetConfigs[n.type] != null) { 666 loge("Error in networkAttributes - ignoring attempt to redefine type " + 667 n.type); 668 continue; 669 } 670 mLegacyTypeTracker.addSupportedType(n.type); 671 672 mNetConfigs[n.type] = n; 673 mNetworksDefined++; 674 } catch(Exception e) { 675 // ignore it - leave the entry null 676 } 677 } 678 679 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 680 if (mNetConfigs[TYPE_VPN] == null) { 681 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 682 // don't need to add TYPE_VPN to mNetConfigs. 683 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 684 mNetworksDefined++; // used only in the log() statement below. 685 } 686 687 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 688 689 mProtectedNetworks = new ArrayList<Integer>(); 690 int[] protectedNetworks = context.getResources().getIntArray( 691 com.android.internal.R.array.config_protectedNetworks); 692 for (int p : protectedNetworks) { 693 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 694 mProtectedNetworks.add(p); 695 } else { 696 if (DBG) loge("Ignoring protectedNetwork " + p); 697 } 698 } 699 700 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 701 && SystemProperties.get("ro.build.type").equals("eng"); 702 703 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 704 705 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 706 707 //set up the listener for user state for creating user VPNs 708 IntentFilter intentFilter = new IntentFilter(); 709 intentFilter.addAction(Intent.ACTION_USER_STARTING); 710 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 711 mContext.registerReceiverAsUser( 712 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 713 714 try { 715 mNetd.registerObserver(mTethering); 716 mNetd.registerObserver(mDataActivityObserver); 717 } catch (RemoteException e) { 718 loge("Error registering observer :" + e); 719 } 720 721 if (DBG) { 722 mInetLog = new ArrayList(); 723 } 724 725 mSettingsObserver = new SettingsObserver(mContext, mHandler); 726 registerSettingsCallbacks(); 727 728 mDataConnectionStats = new DataConnectionStats(mContext); 729 mDataConnectionStats.startMonitoring(); 730 731 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 732 733 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 734 } 735 736 private NetworkRequest createInternetRequestForTransport(int transportType) { 737 NetworkCapabilities netCap = new NetworkCapabilities(); 738 netCap.addCapability(NET_CAPABILITY_INTERNET); 739 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 740 if (transportType > -1) { 741 netCap.addTransportType(transportType); 742 } 743 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 744 } 745 746 private void handleMobileDataAlwaysOn() { 747 final boolean enable = (Settings.Global.getInt( 748 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 749 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 750 if (enable == isEnabled) { 751 return; // Nothing to do. 752 } 753 754 if (enable) { 755 handleRegisterNetworkRequest(new NetworkRequestInfo( 756 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 757 } else { 758 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 759 } 760 } 761 762 private void registerSettingsCallbacks() { 763 // Watch for global HTTP proxy changes. 764 mSettingsObserver.observe( 765 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 766 EVENT_APPLY_GLOBAL_HTTP_PROXY); 767 768 // Watch for whether or not to keep mobile data always on. 769 mSettingsObserver.observe( 770 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 771 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 772 } 773 774 private synchronized int nextNetworkRequestId() { 775 return mNextNetworkRequestId++; 776 } 777 778 @VisibleForTesting 779 protected int reserveNetId() { 780 synchronized (mNetworkForNetId) { 781 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 782 int netId = mNextNetId; 783 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 784 // Make sure NetID unused. http://b/16815182 785 if (!mNetIdInUse.get(netId)) { 786 mNetIdInUse.put(netId, true); 787 return netId; 788 } 789 } 790 } 791 throw new IllegalStateException("No free netIds"); 792 } 793 794 private NetworkState getFilteredNetworkState(int networkType, int uid) { 795 NetworkInfo info = null; 796 LinkProperties lp = null; 797 NetworkCapabilities nc = null; 798 Network network = null; 799 String subscriberId = null; 800 801 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 802 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 803 if (nai != null) { 804 synchronized (nai) { 805 info = new NetworkInfo(nai.networkInfo); 806 lp = new LinkProperties(nai.linkProperties); 807 nc = new NetworkCapabilities(nai.networkCapabilities); 808 // Network objects are outwardly immutable so there is no point to duplicating. 809 // Duplicating also precludes sharing socket factories and connection pools. 810 network = nai.network; 811 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 812 } 813 info.setType(networkType); 814 } else { 815 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 816 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 817 info.setIsAvailable(true); 818 lp = new LinkProperties(); 819 nc = new NetworkCapabilities(); 820 network = null; 821 } 822 info = getFilteredNetworkInfo(info, lp, uid); 823 } 824 825 return new NetworkState(info, lp, nc, network, subscriberId, null); 826 } 827 828 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 829 if (network == null) { 830 return null; 831 } 832 synchronized (mNetworkForNetId) { 833 return mNetworkForNetId.get(network.netId); 834 } 835 }; 836 837 private Network[] getVpnUnderlyingNetworks(int uid) { 838 if (!mLockdownEnabled) { 839 int user = UserHandle.getUserId(uid); 840 synchronized (mVpns) { 841 Vpn vpn = mVpns.get(user); 842 if (vpn != null && vpn.appliesToUid(uid)) { 843 return vpn.getUnderlyingNetworks(); 844 } 845 } 846 } 847 return null; 848 } 849 850 private NetworkState getUnfilteredActiveNetworkState(int uid) { 851 NetworkInfo info = null; 852 LinkProperties lp = null; 853 NetworkCapabilities nc = null; 854 Network network = null; 855 String subscriberId = null; 856 857 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 858 859 final Network[] networks = getVpnUnderlyingNetworks(uid); 860 if (networks != null) { 861 // getUnderlyingNetworks() returns: 862 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 863 // empty array => the VPN explicitly said "no default network". 864 // non-empty array => the VPN specified one or more default networks; we use the 865 // first one. 866 if (networks.length > 0) { 867 nai = getNetworkAgentInfoForNetwork(networks[0]); 868 } else { 869 nai = null; 870 } 871 } 872 873 if (nai != null) { 874 synchronized (nai) { 875 info = new NetworkInfo(nai.networkInfo); 876 lp = new LinkProperties(nai.linkProperties); 877 nc = new NetworkCapabilities(nai.networkCapabilities); 878 // Network objects are outwardly immutable so there is no point to duplicating. 879 // Duplicating also precludes sharing socket factories and connection pools. 880 network = nai.network; 881 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 882 } 883 } 884 885 return new NetworkState(info, lp, nc, network, subscriberId, null); 886 } 887 888 /** 889 * Check if UID should be blocked from using the network with the given LinkProperties. 890 */ 891 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 892 final boolean networkCostly; 893 final int uidRules; 894 895 final String iface = (lp == null ? "" : lp.getInterfaceName()); 896 synchronized (mRulesLock) { 897 networkCostly = mMeteredIfaces.contains(iface); 898 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 899 } 900 901 if ((uidRules & RULE_REJECT_ALL) != 0 902 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 903 return true; 904 } 905 906 // no restrictive rules; network is visible 907 return false; 908 } 909 910 /** 911 * Return a filtered {@link NetworkInfo}, potentially marked 912 * {@link DetailedState#BLOCKED} based on 913 * {@link #isNetworkWithLinkPropertiesBlocked}. 914 */ 915 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 916 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 917 // network is blocked; clone and override state 918 info = new NetworkInfo(info); 919 info.setDetailedState(DetailedState.BLOCKED, null, null); 920 if (VDBG) { 921 log("returning Blocked NetworkInfo for ifname=" + 922 lp.getInterfaceName() + ", uid=" + uid); 923 } 924 } 925 if (info != null && mLockdownTracker != null) { 926 info = mLockdownTracker.augmentNetworkInfo(info); 927 if (VDBG) log("returning Locked NetworkInfo"); 928 } 929 return info; 930 } 931 932 /** 933 * Return NetworkInfo for the active (i.e., connected) network interface. 934 * It is assumed that at most one network is active at a time. If more 935 * than one is active, it is indeterminate which will be returned. 936 * @return the info for the active network, or {@code null} if none is 937 * active 938 */ 939 @Override 940 public NetworkInfo getActiveNetworkInfo() { 941 enforceAccessPermission(); 942 final int uid = Binder.getCallingUid(); 943 NetworkState state = getUnfilteredActiveNetworkState(uid); 944 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 945 } 946 947 @Override 948 public Network getActiveNetwork() { 949 enforceAccessPermission(); 950 final int uid = Binder.getCallingUid(); 951 final int user = UserHandle.getUserId(uid); 952 int vpnNetId = NETID_UNSET; 953 synchronized (mVpns) { 954 final Vpn vpn = mVpns.get(user); 955 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 956 } 957 NetworkAgentInfo nai; 958 if (vpnNetId != NETID_UNSET) { 959 synchronized (mNetworkForNetId) { 960 nai = mNetworkForNetId.get(vpnNetId); 961 } 962 if (nai != null) return nai.network; 963 } 964 nai = getDefaultNetwork(); 965 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 966 return nai != null ? nai.network : null; 967 } 968 969 /** 970 * Find the first Provisioning network. 971 * 972 * @return NetworkInfo or null if none. 973 */ 974 private NetworkInfo getProvisioningNetworkInfo() { 975 enforceAccessPermission(); 976 977 // Find the first Provisioning Network 978 NetworkInfo provNi = null; 979 for (NetworkInfo ni : getAllNetworkInfo()) { 980 if (ni.isConnectedToProvisioningNetwork()) { 981 provNi = ni; 982 break; 983 } 984 } 985 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 986 return provNi; 987 } 988 989 /** 990 * Find the first Provisioning network or the ActiveDefaultNetwork 991 * if there is no Provisioning network 992 * 993 * @return NetworkInfo or null if none. 994 */ 995 @Override 996 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 997 enforceAccessPermission(); 998 999 NetworkInfo provNi = getProvisioningNetworkInfo(); 1000 if (provNi == null) { 1001 provNi = getActiveNetworkInfo(); 1002 } 1003 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1004 return provNi; 1005 } 1006 1007 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1008 enforceAccessPermission(); 1009 final int uid = Binder.getCallingUid(); 1010 NetworkState state = getUnfilteredActiveNetworkState(uid); 1011 return state.networkInfo; 1012 } 1013 1014 @Override 1015 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1016 enforceConnectivityInternalPermission(); 1017 NetworkState state = getUnfilteredActiveNetworkState(uid); 1018 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1019 } 1020 1021 @Override 1022 public NetworkInfo getNetworkInfo(int networkType) { 1023 enforceAccessPermission(); 1024 final int uid = Binder.getCallingUid(); 1025 if (getVpnUnderlyingNetworks(uid) != null) { 1026 // A VPN is active, so we may need to return one of its underlying networks. This 1027 // information is not available in LegacyTypeTracker, so we have to get it from 1028 // getUnfilteredActiveNetworkState. 1029 NetworkState state = getUnfilteredActiveNetworkState(uid); 1030 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1031 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1032 } 1033 } 1034 NetworkState state = getFilteredNetworkState(networkType, uid); 1035 return state.networkInfo; 1036 } 1037 1038 @Override 1039 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1040 enforceAccessPermission(); 1041 final int uid = Binder.getCallingUid(); 1042 NetworkInfo info = null; 1043 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1044 if (nai != null) { 1045 synchronized (nai) { 1046 info = new NetworkInfo(nai.networkInfo); 1047 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1048 } 1049 } 1050 return info; 1051 } 1052 1053 @Override 1054 public NetworkInfo[] getAllNetworkInfo() { 1055 enforceAccessPermission(); 1056 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1057 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1058 networkType++) { 1059 NetworkInfo info = getNetworkInfo(networkType); 1060 if (info != null) { 1061 result.add(info); 1062 } 1063 } 1064 return result.toArray(new NetworkInfo[result.size()]); 1065 } 1066 1067 @Override 1068 public Network getNetworkForType(int networkType) { 1069 enforceAccessPermission(); 1070 final int uid = Binder.getCallingUid(); 1071 NetworkState state = getFilteredNetworkState(networkType, uid); 1072 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1073 return state.network; 1074 } 1075 return null; 1076 } 1077 1078 @Override 1079 public Network[] getAllNetworks() { 1080 enforceAccessPermission(); 1081 synchronized (mNetworkForNetId) { 1082 final Network[] result = new Network[mNetworkForNetId.size()]; 1083 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1084 result[i] = mNetworkForNetId.valueAt(i).network; 1085 } 1086 return result; 1087 } 1088 } 1089 1090 @Override 1091 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1092 // The basic principle is: if an app's traffic could possibly go over a 1093 // network, without the app doing anything multinetwork-specific, 1094 // (hence, by "default"), then include that network's capabilities in 1095 // the array. 1096 // 1097 // In the normal case, app traffic only goes over the system's default 1098 // network connection, so that's the only network returned. 1099 // 1100 // With a VPN in force, some app traffic may go into the VPN, and thus 1101 // over whatever underlying networks the VPN specifies, while other app 1102 // traffic may go over the system default network (e.g.: a split-tunnel 1103 // VPN, or an app disallowed by the VPN), so the set of networks 1104 // returned includes the VPN's underlying networks and the system 1105 // default. 1106 enforceAccessPermission(); 1107 1108 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1109 1110 NetworkAgentInfo nai = getDefaultNetwork(); 1111 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1112 if (nc != null) { 1113 result.put(nai.network, nc); 1114 } 1115 1116 if (!mLockdownEnabled) { 1117 synchronized (mVpns) { 1118 Vpn vpn = mVpns.get(userId); 1119 if (vpn != null) { 1120 Network[] networks = vpn.getUnderlyingNetworks(); 1121 if (networks != null) { 1122 for (Network network : networks) { 1123 nai = getNetworkAgentInfoForNetwork(network); 1124 nc = getNetworkCapabilitiesInternal(nai); 1125 if (nc != null) { 1126 result.put(network, nc); 1127 } 1128 } 1129 } 1130 } 1131 } 1132 } 1133 1134 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1135 out = result.values().toArray(out); 1136 return out; 1137 } 1138 1139 @Override 1140 public boolean isNetworkSupported(int networkType) { 1141 enforceAccessPermission(); 1142 return mLegacyTypeTracker.isTypeSupported(networkType); 1143 } 1144 1145 /** 1146 * Return LinkProperties for the active (i.e., connected) default 1147 * network interface. It is assumed that at most one default network 1148 * is active at a time. If more than one is active, it is indeterminate 1149 * which will be returned. 1150 * @return the ip properties for the active network, or {@code null} if 1151 * none is active 1152 */ 1153 @Override 1154 public LinkProperties getActiveLinkProperties() { 1155 enforceAccessPermission(); 1156 final int uid = Binder.getCallingUid(); 1157 NetworkState state = getUnfilteredActiveNetworkState(uid); 1158 return state.linkProperties; 1159 } 1160 1161 @Override 1162 public LinkProperties getLinkPropertiesForType(int networkType) { 1163 enforceAccessPermission(); 1164 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1165 if (nai != null) { 1166 synchronized (nai) { 1167 return new LinkProperties(nai.linkProperties); 1168 } 1169 } 1170 return null; 1171 } 1172 1173 // TODO - this should be ALL networks 1174 @Override 1175 public LinkProperties getLinkProperties(Network network) { 1176 enforceAccessPermission(); 1177 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1178 if (nai != null) { 1179 synchronized (nai) { 1180 return new LinkProperties(nai.linkProperties); 1181 } 1182 } 1183 return null; 1184 } 1185 1186 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1187 if (nai != null) { 1188 synchronized (nai) { 1189 if (nai.networkCapabilities != null) { 1190 return new NetworkCapabilities(nai.networkCapabilities); 1191 } 1192 } 1193 } 1194 return null; 1195 } 1196 1197 @Override 1198 public NetworkCapabilities getNetworkCapabilities(Network network) { 1199 enforceAccessPermission(); 1200 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1201 } 1202 1203 @Override 1204 public NetworkState[] getAllNetworkState() { 1205 // Require internal since we're handing out IMSI details 1206 enforceConnectivityInternalPermission(); 1207 1208 final ArrayList<NetworkState> result = Lists.newArrayList(); 1209 for (Network network : getAllNetworks()) { 1210 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1211 if (nai != null) { 1212 synchronized (nai) { 1213 final String subscriberId = (nai.networkMisc != null) 1214 ? nai.networkMisc.subscriberId : null; 1215 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1216 nai.networkCapabilities, network, subscriberId, null)); 1217 } 1218 } 1219 } 1220 return result.toArray(new NetworkState[result.size()]); 1221 } 1222 1223 @Override 1224 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1225 enforceAccessPermission(); 1226 final int uid = Binder.getCallingUid(); 1227 final long token = Binder.clearCallingIdentity(); 1228 try { 1229 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1230 if (state.networkInfo != null) { 1231 try { 1232 return mPolicyManager.getNetworkQuotaInfo(state); 1233 } catch (RemoteException e) { 1234 } 1235 } 1236 return null; 1237 } finally { 1238 Binder.restoreCallingIdentity(token); 1239 } 1240 } 1241 1242 @Override 1243 public boolean isActiveNetworkMetered() { 1244 enforceAccessPermission(); 1245 final int uid = Binder.getCallingUid(); 1246 final long token = Binder.clearCallingIdentity(); 1247 try { 1248 return isActiveNetworkMeteredUnchecked(uid); 1249 } finally { 1250 Binder.restoreCallingIdentity(token); 1251 } 1252 } 1253 1254 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1255 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1256 if (state.networkInfo != null) { 1257 try { 1258 return mPolicyManager.isNetworkMetered(state); 1259 } catch (RemoteException e) { 1260 } 1261 } 1262 return false; 1263 } 1264 1265 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1266 @Override 1267 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1268 int deviceType = Integer.parseInt(label); 1269 sendDataActivityBroadcast(deviceType, active, tsNanos); 1270 } 1271 }; 1272 1273 /** 1274 * Ensure that a network route exists to deliver traffic to the specified 1275 * host via the specified network interface. 1276 * @param networkType the type of the network over which traffic to the 1277 * specified host is to be routed 1278 * @param hostAddress the IP address of the host to which the route is 1279 * desired 1280 * @return {@code true} on success, {@code false} on failure 1281 */ 1282 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1283 enforceChangePermission(); 1284 if (mProtectedNetworks.contains(networkType)) { 1285 enforceConnectivityInternalPermission(); 1286 } 1287 1288 InetAddress addr; 1289 try { 1290 addr = InetAddress.getByAddress(hostAddress); 1291 } catch (UnknownHostException e) { 1292 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1293 return false; 1294 } 1295 1296 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1297 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1298 return false; 1299 } 1300 1301 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1302 if (nai == null) { 1303 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1304 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1305 } else { 1306 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1307 } 1308 return false; 1309 } 1310 1311 DetailedState netState; 1312 synchronized (nai) { 1313 netState = nai.networkInfo.getDetailedState(); 1314 } 1315 1316 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1317 if (VDBG) { 1318 log("requestRouteToHostAddress on down network " 1319 + "(" + networkType + ") - dropped" 1320 + " netState=" + netState); 1321 } 1322 return false; 1323 } 1324 1325 final int uid = Binder.getCallingUid(); 1326 final long token = Binder.clearCallingIdentity(); 1327 try { 1328 LinkProperties lp; 1329 int netId; 1330 synchronized (nai) { 1331 lp = nai.linkProperties; 1332 netId = nai.network.netId; 1333 } 1334 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1335 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1336 return ok; 1337 } finally { 1338 Binder.restoreCallingIdentity(token); 1339 } 1340 } 1341 1342 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1343 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1344 if (bestRoute == null) { 1345 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1346 } else { 1347 String iface = bestRoute.getInterface(); 1348 if (bestRoute.getGateway().equals(addr)) { 1349 // if there is no better route, add the implied hostroute for our gateway 1350 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1351 } else { 1352 // if we will connect to this through another route, add a direct route 1353 // to it's gateway 1354 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1355 } 1356 } 1357 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1358 try { 1359 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1360 } catch (Exception e) { 1361 // never crash - catch them all 1362 if (DBG) loge("Exception trying to add a route: " + e); 1363 return false; 1364 } 1365 return true; 1366 } 1367 1368 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1369 @Override 1370 public void onUidRulesChanged(int uid, int uidRules) { 1371 // caller is NPMS, since we only register with them 1372 if (LOGD_RULES) { 1373 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1374 } 1375 1376 synchronized (mRulesLock) { 1377 // skip update when we've already applied rules 1378 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1379 if (oldRules == uidRules) return; 1380 1381 mUidRules.put(uid, uidRules); 1382 } 1383 1384 // TODO: notify UID when it has requested targeted updates 1385 } 1386 1387 @Override 1388 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1389 // caller is NPMS, since we only register with them 1390 if (LOGD_RULES) { 1391 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1392 } 1393 1394 synchronized (mRulesLock) { 1395 mMeteredIfaces.clear(); 1396 for (String iface : meteredIfaces) { 1397 mMeteredIfaces.add(iface); 1398 } 1399 } 1400 } 1401 1402 @Override 1403 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1404 // caller is NPMS, since we only register with them 1405 if (LOGD_RULES) { 1406 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1407 } 1408 } 1409 }; 1410 1411 /** 1412 * Require that the caller is either in the same user or has appropriate permission to interact 1413 * across users. 1414 * 1415 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1416 */ 1417 private void enforceCrossUserPermission(int userId) { 1418 if (userId == UserHandle.getCallingUserId()) { 1419 // Not a cross-user call. 1420 return; 1421 } 1422 mContext.enforceCallingOrSelfPermission( 1423 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1424 "ConnectivityService"); 1425 } 1426 1427 private void enforceInternetPermission() { 1428 mContext.enforceCallingOrSelfPermission( 1429 android.Manifest.permission.INTERNET, 1430 "ConnectivityService"); 1431 } 1432 1433 private void enforceAccessPermission() { 1434 mContext.enforceCallingOrSelfPermission( 1435 android.Manifest.permission.ACCESS_NETWORK_STATE, 1436 "ConnectivityService"); 1437 } 1438 1439 private void enforceChangePermission() { 1440 mContext.enforceCallingOrSelfPermission( 1441 android.Manifest.permission.CHANGE_NETWORK_STATE, 1442 "ConnectivityService"); 1443 } 1444 1445 private void enforceTetherAccessPermission() { 1446 mContext.enforceCallingOrSelfPermission( 1447 android.Manifest.permission.ACCESS_NETWORK_STATE, 1448 "ConnectivityService"); 1449 } 1450 1451 private void enforceConnectivityInternalPermission() { 1452 mContext.enforceCallingOrSelfPermission( 1453 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1454 "ConnectivityService"); 1455 } 1456 1457 public void sendConnectedBroadcast(NetworkInfo info) { 1458 enforceConnectivityInternalPermission(); 1459 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1460 } 1461 1462 private void sendInetConditionBroadcast(NetworkInfo info) { 1463 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1464 } 1465 1466 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1467 if (mLockdownTracker != null) { 1468 info = mLockdownTracker.augmentNetworkInfo(info); 1469 } 1470 1471 Intent intent = new Intent(bcastType); 1472 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1473 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1474 if (info.isFailover()) { 1475 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1476 info.setFailover(false); 1477 } 1478 if (info.getReason() != null) { 1479 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1480 } 1481 if (info.getExtraInfo() != null) { 1482 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1483 info.getExtraInfo()); 1484 } 1485 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1486 return intent; 1487 } 1488 1489 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1490 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1491 } 1492 1493 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1494 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1495 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1496 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1497 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1498 final long ident = Binder.clearCallingIdentity(); 1499 try { 1500 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1501 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1502 } finally { 1503 Binder.restoreCallingIdentity(ident); 1504 } 1505 } 1506 1507 private void sendStickyBroadcast(Intent intent) { 1508 synchronized(this) { 1509 if (!mSystemReady) { 1510 mInitialBroadcast = new Intent(intent); 1511 } 1512 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1513 if (DBG) { 1514 log("sendStickyBroadcast: action=" + intent.getAction()); 1515 } 1516 1517 final long ident = Binder.clearCallingIdentity(); 1518 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1519 final IBatteryStats bs = BatteryStatsService.getService(); 1520 try { 1521 NetworkInfo ni = intent.getParcelableExtra( 1522 ConnectivityManager.EXTRA_NETWORK_INFO); 1523 bs.noteConnectivityChanged(intent.getIntExtra( 1524 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1525 ni != null ? ni.getState().toString() : "?"); 1526 } catch (RemoteException e) { 1527 } 1528 } 1529 try { 1530 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1531 } finally { 1532 Binder.restoreCallingIdentity(ident); 1533 } 1534 } 1535 } 1536 1537 void systemReady() { 1538 loadGlobalProxy(); 1539 1540 synchronized(this) { 1541 mSystemReady = true; 1542 if (mInitialBroadcast != null) { 1543 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1544 mInitialBroadcast = null; 1545 } 1546 } 1547 // load the global proxy at startup 1548 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1549 1550 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1551 // for user to unlock device. 1552 if (!updateLockdownVpn()) { 1553 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1554 mContext.registerReceiver(mUserPresentReceiver, filter); 1555 } 1556 1557 // Configure whether mobile data is always on. 1558 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1559 1560 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1561 1562 mPermissionMonitor.startMonitoring(); 1563 } 1564 1565 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1566 @Override 1567 public void onReceive(Context context, Intent intent) { 1568 // Try creating lockdown tracker, since user present usually means 1569 // unlocked keystore. 1570 if (updateLockdownVpn()) { 1571 mContext.unregisterReceiver(this); 1572 } 1573 } 1574 }; 1575 1576 /** @hide */ 1577 @Override 1578 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1579 enforceConnectivityInternalPermission(); 1580 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1581// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1582 } 1583 1584 /** 1585 * Setup data activity tracking for the given network. 1586 * 1587 * Every {@code setupDataActivityTracking} should be paired with a 1588 * {@link #removeDataActivityTracking} for cleanup. 1589 */ 1590 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1591 final String iface = networkAgent.linkProperties.getInterfaceName(); 1592 1593 final int timeout; 1594 int type = ConnectivityManager.TYPE_NONE; 1595 1596 if (networkAgent.networkCapabilities.hasTransport( 1597 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1598 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1599 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1600 5); 1601 type = ConnectivityManager.TYPE_MOBILE; 1602 } else if (networkAgent.networkCapabilities.hasTransport( 1603 NetworkCapabilities.TRANSPORT_WIFI)) { 1604 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1605 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1606 5); 1607 type = ConnectivityManager.TYPE_WIFI; 1608 } else { 1609 // do not track any other networks 1610 timeout = 0; 1611 } 1612 1613 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1614 try { 1615 mNetd.addIdleTimer(iface, timeout, type); 1616 } catch (Exception e) { 1617 // You shall not crash! 1618 loge("Exception in setupDataActivityTracking " + e); 1619 } 1620 } 1621 } 1622 1623 /** 1624 * Remove data activity tracking when network disconnects. 1625 */ 1626 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1627 final String iface = networkAgent.linkProperties.getInterfaceName(); 1628 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1629 1630 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1631 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1632 try { 1633 // the call fails silently if no idletimer setup for this interface 1634 mNetd.removeIdleTimer(iface); 1635 } catch (Exception e) { 1636 loge("Exception in removeDataActivityTracking " + e); 1637 } 1638 } 1639 } 1640 1641 /** 1642 * Reads the network specific MTU size from reources. 1643 * and set it on it's iface. 1644 */ 1645 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1646 final String iface = newLp.getInterfaceName(); 1647 final int mtu = newLp.getMtu(); 1648 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1649 if (VDBG) log("identical MTU - not setting"); 1650 return; 1651 } 1652 1653 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1654 loge("Unexpected mtu value: " + mtu + ", " + iface); 1655 return; 1656 } 1657 1658 // Cannot set MTU without interface name 1659 if (TextUtils.isEmpty(iface)) { 1660 loge("Setting MTU size with null iface."); 1661 return; 1662 } 1663 1664 try { 1665 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1666 mNetd.setMtu(iface, mtu); 1667 } catch (Exception e) { 1668 Slog.e(TAG, "exception in setMtu()" + e); 1669 } 1670 } 1671 1672 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1673 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1674 1675 // Overridden for testing purposes to avoid writing to SystemProperties. 1676 @VisibleForTesting 1677 protected int getDefaultTcpRwnd() { 1678 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1679 } 1680 1681 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1682 if (isDefaultNetwork(nai) == false) { 1683 return; 1684 } 1685 1686 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1687 String[] values = null; 1688 if (tcpBufferSizes != null) { 1689 values = tcpBufferSizes.split(","); 1690 } 1691 1692 if (values == null || values.length != 6) { 1693 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1694 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1695 values = tcpBufferSizes.split(","); 1696 } 1697 1698 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1699 1700 try { 1701 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1702 1703 final String prefix = "/sys/kernel/ipv4/tcp_"; 1704 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1705 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1706 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1707 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1708 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1709 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1710 mCurrentTcpBufferSizes = tcpBufferSizes; 1711 } catch (IOException e) { 1712 loge("Can't set TCP buffer sizes:" + e); 1713 } 1714 1715 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1716 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1717 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1718 if (rwndValue != 0) { 1719 SystemProperties.set(sysctlKey, rwndValue.toString()); 1720 } 1721 } 1722 1723 private void flushVmDnsCache() { 1724 /* 1725 * Tell the VMs to toss their DNS caches 1726 */ 1727 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1728 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1729 /* 1730 * Connectivity events can happen before boot has completed ... 1731 */ 1732 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1733 final long ident = Binder.clearCallingIdentity(); 1734 try { 1735 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1736 } finally { 1737 Binder.restoreCallingIdentity(ident); 1738 } 1739 } 1740 1741 @Override 1742 public int getRestoreDefaultNetworkDelay(int networkType) { 1743 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1744 NETWORK_RESTORE_DELAY_PROP_NAME); 1745 if(restoreDefaultNetworkDelayStr != null && 1746 restoreDefaultNetworkDelayStr.length() != 0) { 1747 try { 1748 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1749 } catch (NumberFormatException e) { 1750 } 1751 } 1752 // if the system property isn't set, use the value for the apn type 1753 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1754 1755 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1756 (mNetConfigs[networkType] != null)) { 1757 ret = mNetConfigs[networkType].restoreTime; 1758 } 1759 return ret; 1760 } 1761 1762 private boolean shouldPerformDiagnostics(String[] args) { 1763 for (String arg : args) { 1764 if (arg.equals("--diag")) { 1765 return true; 1766 } 1767 } 1768 return false; 1769 } 1770 1771 @Override 1772 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1773 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1774 if (mContext.checkCallingOrSelfPermission( 1775 android.Manifest.permission.DUMP) 1776 != PackageManager.PERMISSION_GRANTED) { 1777 pw.println("Permission Denial: can't dump ConnectivityService " + 1778 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1779 Binder.getCallingUid()); 1780 return; 1781 } 1782 1783 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1784 if (shouldPerformDiagnostics(args)) { 1785 final long DIAG_TIME_MS = 5000; 1786 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1787 // Start gathering diagnostic information. 1788 netDiags.add(new NetworkDiagnostics( 1789 nai.network, 1790 new LinkProperties(nai.linkProperties), 1791 DIAG_TIME_MS)); 1792 } 1793 1794 for (NetworkDiagnostics netDiag : netDiags) { 1795 pw.println(); 1796 netDiag.waitForMeasurements(); 1797 netDiag.dump(pw); 1798 } 1799 1800 return; 1801 } 1802 1803 pw.print("NetworkFactories for:"); 1804 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1805 pw.print(" " + nfi.name); 1806 } 1807 pw.println(); 1808 pw.println(); 1809 1810 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1811 pw.print("Active default network: "); 1812 if (defaultNai == null) { 1813 pw.println("none"); 1814 } else { 1815 pw.println(defaultNai.network.netId); 1816 } 1817 pw.println(); 1818 1819 pw.println("Current Networks:"); 1820 pw.increaseIndent(); 1821 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1822 pw.println(nai.toString()); 1823 pw.increaseIndent(); 1824 pw.println("Requests:"); 1825 pw.increaseIndent(); 1826 for (int i = 0; i < nai.networkRequests.size(); i++) { 1827 pw.println(nai.networkRequests.valueAt(i).toString()); 1828 } 1829 pw.decreaseIndent(); 1830 pw.println("Lingered:"); 1831 pw.increaseIndent(); 1832 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1833 pw.decreaseIndent(); 1834 pw.decreaseIndent(); 1835 } 1836 pw.decreaseIndent(); 1837 pw.println(); 1838 1839 pw.println("Network Requests:"); 1840 pw.increaseIndent(); 1841 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1842 pw.println(nri.toString()); 1843 } 1844 pw.println(); 1845 pw.decreaseIndent(); 1846 1847 mLegacyTypeTracker.dump(pw); 1848 1849 synchronized (this) { 1850 pw.print("mNetTransitionWakeLock: currently " + 1851 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1852 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1853 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1854 } else { 1855 pw.println(", last requested never"); 1856 } 1857 } 1858 pw.println(); 1859 1860 mTethering.dump(fd, pw, args); 1861 1862 if (mInetLog != null && mInetLog.size() > 0) { 1863 pw.println(); 1864 pw.println("Inet condition reports:"); 1865 pw.increaseIndent(); 1866 for(int i = 0; i < mInetLog.size(); i++) { 1867 pw.println(mInetLog.get(i)); 1868 } 1869 pw.decreaseIndent(); 1870 } 1871 } 1872 1873 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1874 if (nai.network == null) return false; 1875 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1876 if (officialNai != null && officialNai.equals(nai)) return true; 1877 if (officialNai != null || VDBG) { 1878 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1879 " - " + nai); 1880 } 1881 return false; 1882 } 1883 1884 private boolean isRequest(NetworkRequest request) { 1885 return mNetworkRequests.get(request).isRequest; 1886 } 1887 1888 // must be stateless - things change under us. 1889 private class NetworkStateTrackerHandler extends Handler { 1890 public NetworkStateTrackerHandler(Looper looper) { 1891 super(looper); 1892 } 1893 1894 @Override 1895 public void handleMessage(Message msg) { 1896 NetworkInfo info; 1897 switch (msg.what) { 1898 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1899 handleAsyncChannelHalfConnect(msg); 1900 break; 1901 } 1902 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1903 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1904 if (nai != null) nai.asyncChannel.disconnect(); 1905 break; 1906 } 1907 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1908 handleAsyncChannelDisconnected(msg); 1909 break; 1910 } 1911 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1912 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1913 if (nai == null) { 1914 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1915 } else { 1916 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1917 } 1918 break; 1919 } 1920 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1921 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1922 if (nai == null) { 1923 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1924 } else { 1925 if (VDBG) { 1926 log("Update of LinkProperties for " + nai.name() + 1927 "; created=" + nai.created); 1928 } 1929 LinkProperties oldLp = nai.linkProperties; 1930 synchronized (nai) { 1931 nai.linkProperties = (LinkProperties)msg.obj; 1932 } 1933 if (nai.created) updateLinkProperties(nai, oldLp); 1934 } 1935 break; 1936 } 1937 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1938 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1939 if (nai == null) { 1940 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1941 break; 1942 } 1943 info = (NetworkInfo) msg.obj; 1944 updateNetworkInfo(nai, info); 1945 break; 1946 } 1947 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1948 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1949 if (nai == null) { 1950 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1951 break; 1952 } 1953 Integer score = (Integer) msg.obj; 1954 if (score != null) updateNetworkScore(nai, score.intValue()); 1955 break; 1956 } 1957 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1958 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1959 if (nai == null) { 1960 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1961 break; 1962 } 1963 try { 1964 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1965 } catch (Exception e) { 1966 // Never crash! 1967 loge("Exception in addVpnUidRanges: " + e); 1968 } 1969 break; 1970 } 1971 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1972 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1973 if (nai == null) { 1974 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1975 break; 1976 } 1977 try { 1978 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1979 } catch (Exception e) { 1980 // Never crash! 1981 loge("Exception in removeVpnUidRanges: " + e); 1982 } 1983 break; 1984 } 1985 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1986 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1987 if (nai == null) { 1988 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1989 break; 1990 } 1991 if (nai.created && !nai.networkMisc.explicitlySelected) { 1992 loge("ERROR: created network explicitly selected."); 1993 } 1994 nai.networkMisc.explicitlySelected = true; 1995 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1996 break; 1997 } 1998 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1999 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2000 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 2001 final boolean valid = 2002 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2003 final boolean validationChanged = (valid != nai.lastValidated); 2004 nai.lastValidated = valid; 2005 if (valid) { 2006 if (DBG) log("Validated " + nai.name()); 2007 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 2008 if (!nai.everValidated) { 2009 nai.everValidated = true; 2010 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 2011 ReapUnvalidatedNetworks.REAP); 2012 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2013 sendUpdatedScoreToFactories(nai); 2014 } 2015 } else { 2016 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 2017 } 2018 updateInetCondition(nai); 2019 // Let the NetworkAgent know the state of its network 2020 nai.asyncChannel.sendMessage( 2021 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2022 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2023 0, null); 2024 2025 if (validationChanged) { 2026 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 2027 } 2028 } 2029 break; 2030 } 2031 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2032 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2033 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2034 handleLingerComplete(nai); 2035 } 2036 break; 2037 } 2038 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2039 final int netId = msg.arg2; 2040 if (msg.arg1 == 0) { 2041 setProvNotificationVisibleIntent(false, netId, null, 0, null, null); 2042 } else { 2043 final NetworkAgentInfo nai; 2044 synchronized (mNetworkForNetId) { 2045 nai = mNetworkForNetId.get(netId); 2046 } 2047 if (nai == null) { 2048 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2049 break; 2050 } 2051 nai.captivePortalDetected = true; 2052 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2053 nai.networkInfo.getType(),nai.networkInfo.getExtraInfo(), 2054 (PendingIntent)msg.obj); 2055 } 2056 break; 2057 } 2058 } 2059 } 2060 } 2061 2062 // Cancel any lingering so the linger timeout doesn't teardown a network. 2063 // This should be called when a network begins satisfying a NetworkRequest. 2064 // Note: depending on what state the NetworkMonitor is in (e.g., 2065 // if it's awaiting captive portal login, or if validation failed), this 2066 // may trigger a re-evaluation of the network. 2067 private void unlinger(NetworkAgentInfo nai) { 2068 if (VDBG) log("Canceling linger of " + nai.name()); 2069 // If network has never been validated, it cannot have been lingered, so don't bother 2070 // needlessly triggering a re-evaluation. 2071 if (!nai.everValidated) return; 2072 nai.networkLingered.clear(); 2073 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2074 } 2075 2076 private void handleAsyncChannelHalfConnect(Message msg) { 2077 AsyncChannel ac = (AsyncChannel) msg.obj; 2078 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2079 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2080 if (VDBG) log("NetworkFactory connected"); 2081 // A network factory has connected. Send it all current NetworkRequests. 2082 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2083 if (nri.isRequest == false) continue; 2084 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2085 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2086 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2087 } 2088 } else { 2089 loge("Error connecting NetworkFactory"); 2090 mNetworkFactoryInfos.remove(msg.obj); 2091 } 2092 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2093 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2094 if (VDBG) log("NetworkAgent connected"); 2095 // A network agent has requested a connection. Establish the connection. 2096 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2097 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2098 } else { 2099 loge("Error connecting NetworkAgent"); 2100 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2101 if (nai != null) { 2102 final boolean wasDefault = isDefaultNetwork(nai); 2103 synchronized (mNetworkForNetId) { 2104 mNetworkForNetId.remove(nai.network.netId); 2105 mNetIdInUse.delete(nai.network.netId); 2106 } 2107 // Just in case. 2108 mLegacyTypeTracker.remove(nai, wasDefault); 2109 } 2110 } 2111 } 2112 } 2113 2114 private void handleAsyncChannelDisconnected(Message msg) { 2115 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2116 if (nai != null) { 2117 if (DBG) { 2118 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2119 } 2120 // A network agent has disconnected. 2121 if (nai.created) { 2122 // Tell netd to clean up the configuration for this network 2123 // (routing rules, DNS, etc). 2124 try { 2125 mNetd.removeNetwork(nai.network.netId); 2126 } catch (Exception e) { 2127 loge("Exception removing network: " + e); 2128 } 2129 } 2130 // TODO - if we move the logic to the network agent (have them disconnect 2131 // because they lost all their requests or because their score isn't good) 2132 // then they would disconnect organically, report their new state and then 2133 // disconnect the channel. 2134 if (nai.networkInfo.isConnected()) { 2135 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2136 null, null); 2137 } 2138 final boolean wasDefault = isDefaultNetwork(nai); 2139 if (wasDefault) { 2140 mDefaultInetConditionPublished = 0; 2141 } 2142 notifyIfacesChanged(); 2143 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2144 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2145 mNetworkAgentInfos.remove(msg.replyTo); 2146 updateClat(null, nai.linkProperties, nai); 2147 synchronized (mNetworkForNetId) { 2148 mNetworkForNetId.remove(nai.network.netId); 2149 mNetIdInUse.delete(nai.network.netId); 2150 } 2151 // Since we've lost the network, go through all the requests that 2152 // it was satisfying and see if any other factory can satisfy them. 2153 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2154 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2155 for (int i = 0; i < nai.networkRequests.size(); i++) { 2156 NetworkRequest request = nai.networkRequests.valueAt(i); 2157 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2158 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2159 if (DBG) { 2160 log("Checking for replacement network to handle request " + request ); 2161 } 2162 mNetworkForRequestId.remove(request.requestId); 2163 sendUpdatedScoreToFactories(request, 0); 2164 NetworkAgentInfo alternative = null; 2165 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2166 if (existing.satisfies(request) && 2167 (alternative == null || 2168 alternative.getCurrentScore() < existing.getCurrentScore())) { 2169 alternative = existing; 2170 } 2171 } 2172 if (alternative != null) { 2173 if (DBG) log(" found replacement in " + alternative.name()); 2174 if (!toActivate.contains(alternative)) { 2175 toActivate.add(alternative); 2176 } 2177 } 2178 } 2179 } 2180 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2181 removeDataActivityTracking(nai); 2182 notifyLockdownVpn(nai); 2183 requestNetworkTransitionWakelock(nai.name()); 2184 } 2185 mLegacyTypeTracker.remove(nai, wasDefault); 2186 for (NetworkAgentInfo networkToActivate : toActivate) { 2187 unlinger(networkToActivate); 2188 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2189 ReapUnvalidatedNetworks.DONT_REAP); 2190 } 2191 } 2192 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2193 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2194 } 2195 2196 // If this method proves to be too slow then we can maintain a separate 2197 // pendingIntent => NetworkRequestInfo map. 2198 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2199 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2200 Intent intent = pendingIntent.getIntent(); 2201 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2202 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2203 if (existingPendingIntent != null && 2204 existingPendingIntent.getIntent().filterEquals(intent)) { 2205 return entry.getValue(); 2206 } 2207 } 2208 return null; 2209 } 2210 2211 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2212 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2213 2214 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2215 if (existingRequest != null) { // remove the existing request. 2216 if (DBG) log("Replacing " + existingRequest.request + " with " 2217 + nri.request + " because their intents matched."); 2218 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2219 } 2220 handleRegisterNetworkRequest(nri); 2221 } 2222 2223 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2224 mNetworkRequests.put(nri.request, nri); 2225 2226 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2227 2228 // Check for the best currently alive network that satisfies this request 2229 NetworkAgentInfo bestNetwork = null; 2230 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2231 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2232 if (network.satisfies(nri.request)) { 2233 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2234 if (!nri.isRequest) { 2235 // Not setting bestNetwork here as a listening NetworkRequest may be 2236 // satisfied by multiple Networks. Instead the request is added to 2237 // each satisfying Network and notified about each. 2238 network.addRequest(nri.request); 2239 notifyNetworkCallback(network, nri); 2240 } else if (bestNetwork == null || 2241 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2242 bestNetwork = network; 2243 } 2244 } 2245 } 2246 if (bestNetwork != null) { 2247 if (DBG) log("using " + bestNetwork.name()); 2248 unlinger(bestNetwork); 2249 bestNetwork.addRequest(nri.request); 2250 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2251 notifyNetworkCallback(bestNetwork, nri); 2252 if (nri.request.legacyType != TYPE_NONE) { 2253 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2254 } 2255 } 2256 2257 if (nri.isRequest) { 2258 if (DBG) log("sending new NetworkRequest to factories"); 2259 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2260 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2261 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2262 0, nri.request); 2263 } 2264 } 2265 } 2266 2267 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2268 int callingUid) { 2269 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2270 if (nri != null) { 2271 handleReleaseNetworkRequest(nri.request, callingUid); 2272 } 2273 } 2274 2275 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2276 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2277 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2278 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2279 private boolean unneeded(NetworkAgentInfo nai) { 2280 if (!nai.created || nai.isVPN()) return false; 2281 boolean unneeded = true; 2282 if (nai.everValidated) { 2283 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2284 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2285 try { 2286 if (isRequest(nr)) unneeded = false; 2287 } catch (Exception e) { 2288 loge("Request " + nr + " not found in mNetworkRequests."); 2289 loge(" it came from request list of " + nai.name()); 2290 } 2291 } 2292 } else { 2293 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2294 // If this Network is already the highest scoring Network for a request, or if 2295 // there is hope for it to become one if it validated, then it is needed. 2296 if (nri.isRequest && nai.satisfies(nri.request) && 2297 (nai.networkRequests.get(nri.request.requestId) != null || 2298 // Note that this catches two important cases: 2299 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2300 // is currently satisfying the request. This is desirable when 2301 // cellular ends up validating but WiFi does not. 2302 // 2. Unvalidated WiFi will not be reaped when validated cellular 2303 // is currently satsifying the request. This is desirable when 2304 // WiFi ends up validating and out scoring cellular. 2305 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2306 nai.getCurrentScoreAsValidated())) { 2307 unneeded = false; 2308 break; 2309 } 2310 } 2311 } 2312 return unneeded; 2313 } 2314 2315 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2316 NetworkRequestInfo nri = mNetworkRequests.get(request); 2317 if (nri != null) { 2318 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2319 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2320 return; 2321 } 2322 if (DBG) log("releasing NetworkRequest " + request); 2323 nri.unlinkDeathRecipient(); 2324 mNetworkRequests.remove(request); 2325 if (nri.isRequest) { 2326 // Find all networks that are satisfying this request and remove the request 2327 // from their request lists. 2328 // TODO - it's my understanding that for a request there is only a single 2329 // network satisfying it, so this loop is wasteful 2330 boolean wasKept = false; 2331 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2332 if (nai.networkRequests.get(nri.request.requestId) != null) { 2333 nai.networkRequests.remove(nri.request.requestId); 2334 if (DBG) { 2335 log(" Removing from current network " + nai.name() + 2336 ", leaving " + nai.networkRequests.size() + 2337 " requests."); 2338 } 2339 if (unneeded(nai)) { 2340 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2341 teardownUnneededNetwork(nai); 2342 } else { 2343 // suspect there should only be one pass through here 2344 // but if any were kept do the check below 2345 wasKept |= true; 2346 } 2347 } 2348 } 2349 2350 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2351 if (nai != null) { 2352 mNetworkForRequestId.remove(nri.request.requestId); 2353 } 2354 // Maintain the illusion. When this request arrived, we might have pretended 2355 // that a network connected to serve it, even though the network was already 2356 // connected. Now that this request has gone away, we might have to pretend 2357 // that the network disconnected. LegacyTypeTracker will generate that 2358 // phantom disconnect for this type. 2359 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2360 boolean doRemove = true; 2361 if (wasKept) { 2362 // check if any of the remaining requests for this network are for the 2363 // same legacy type - if so, don't remove the nai 2364 for (int i = 0; i < nai.networkRequests.size(); i++) { 2365 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2366 if (otherRequest.legacyType == nri.request.legacyType && 2367 isRequest(otherRequest)) { 2368 if (DBG) log(" still have other legacy request - leaving"); 2369 doRemove = false; 2370 } 2371 } 2372 } 2373 2374 if (doRemove) { 2375 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2376 } 2377 } 2378 2379 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2380 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2381 nri.request); 2382 } 2383 } else { 2384 // listens don't have a singular affectedNetwork. Check all networks to see 2385 // if this listen request applies and remove it. 2386 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2387 nai.networkRequests.remove(nri.request.requestId); 2388 } 2389 } 2390 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2391 } 2392 } 2393 2394 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2395 enforceConnectivityInternalPermission(); 2396 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2397 accept ? 1 : 0, always ? 1: 0, network)); 2398 } 2399 2400 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2401 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2402 " accept=" + accept + " always=" + always); 2403 2404 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2405 if (nai == null) { 2406 // Nothing to do. 2407 return; 2408 } 2409 2410 if (nai.everValidated) { 2411 // The network validated while the dialog box was up. Take no action. 2412 return; 2413 } 2414 2415 if (!nai.networkMisc.explicitlySelected) { 2416 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2417 } 2418 2419 if (accept != nai.networkMisc.acceptUnvalidated) { 2420 int oldScore = nai.getCurrentScore(); 2421 nai.networkMisc.acceptUnvalidated = accept; 2422 rematchAllNetworksAndRequests(nai, oldScore); 2423 sendUpdatedScoreToFactories(nai); 2424 } 2425 2426 if (always) { 2427 nai.asyncChannel.sendMessage( 2428 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2429 } 2430 2431 if (!accept) { 2432 // Tell the NetworkAgent that the network does not have Internet access (because that's 2433 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2434 // the future. We do this now because NetworkMonitor might not yet have finished 2435 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2436 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2437 NetworkAgent.INVALID_NETWORK, 0, null); 2438 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2439 // to reconnect to it immediately. http://b/20739299 2440 } 2441 2442 } 2443 2444 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2445 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2446 mHandler.sendMessageDelayed( 2447 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2448 PROMPT_UNVALIDATED_DELAY_MS); 2449 } 2450 2451 private void handlePromptUnvalidated(Network network) { 2452 if (DBG) log("handlePromptUnvalidated " + network); 2453 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2454 2455 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2456 // we haven't already been told to switch to it regardless of whether it validated or not. 2457 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2458 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2459 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2460 return; 2461 } 2462 2463 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2464 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2465 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2466 intent.setClassName("com.android.settings", 2467 "com.android.settings.wifi.WifiNoInternetDialog"); 2468 2469 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2470 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2471 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2472 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent); 2473 } 2474 2475 private class InternalHandler extends Handler { 2476 public InternalHandler(Looper looper) { 2477 super(looper); 2478 } 2479 2480 @Override 2481 public void handleMessage(Message msg) { 2482 switch (msg.what) { 2483 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2484 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2485 String causedBy = null; 2486 synchronized (ConnectivityService.this) { 2487 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2488 mNetTransitionWakeLock.isHeld()) { 2489 mNetTransitionWakeLock.release(); 2490 causedBy = mNetTransitionWakeLockCausedBy; 2491 } else { 2492 break; 2493 } 2494 } 2495 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2496 log("Failed to find a new network - expiring NetTransition Wakelock"); 2497 } else { 2498 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2499 " cleared because we found a replacement network"); 2500 } 2501 break; 2502 } 2503 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2504 handleDeprecatedGlobalHttpProxy(); 2505 break; 2506 } 2507 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2508 Intent intent = (Intent)msg.obj; 2509 sendStickyBroadcast(intent); 2510 break; 2511 } 2512 case EVENT_PROXY_HAS_CHANGED: { 2513 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2514 break; 2515 } 2516 case EVENT_REGISTER_NETWORK_FACTORY: { 2517 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2518 break; 2519 } 2520 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2521 handleUnregisterNetworkFactory((Messenger)msg.obj); 2522 break; 2523 } 2524 case EVENT_REGISTER_NETWORK_AGENT: { 2525 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2526 break; 2527 } 2528 case EVENT_REGISTER_NETWORK_REQUEST: 2529 case EVENT_REGISTER_NETWORK_LISTENER: { 2530 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2531 break; 2532 } 2533 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2534 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2535 handleRegisterNetworkRequestWithIntent(msg); 2536 break; 2537 } 2538 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2539 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2540 break; 2541 } 2542 case EVENT_RELEASE_NETWORK_REQUEST: { 2543 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2544 break; 2545 } 2546 case EVENT_SET_ACCEPT_UNVALIDATED: { 2547 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2548 break; 2549 } 2550 case EVENT_PROMPT_UNVALIDATED: { 2551 handlePromptUnvalidated((Network) msg.obj); 2552 break; 2553 } 2554 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2555 handleMobileDataAlwaysOn(); 2556 break; 2557 } 2558 case EVENT_SYSTEM_READY: { 2559 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2560 nai.networkMonitor.systemReady = true; 2561 } 2562 break; 2563 } 2564 } 2565 } 2566 } 2567 2568 // javadoc from interface 2569 public int tether(String iface) { 2570 ConnectivityManager.enforceTetherChangePermission(mContext); 2571 if (isTetheringSupported()) { 2572 return mTethering.tether(iface); 2573 } else { 2574 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2575 } 2576 } 2577 2578 // javadoc from interface 2579 public int untether(String iface) { 2580 ConnectivityManager.enforceTetherChangePermission(mContext); 2581 2582 if (isTetheringSupported()) { 2583 return mTethering.untether(iface); 2584 } else { 2585 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2586 } 2587 } 2588 2589 // javadoc from interface 2590 public int getLastTetherError(String iface) { 2591 enforceTetherAccessPermission(); 2592 2593 if (isTetheringSupported()) { 2594 return mTethering.getLastTetherError(iface); 2595 } else { 2596 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2597 } 2598 } 2599 2600 // TODO - proper iface API for selection by property, inspection, etc 2601 public String[] getTetherableUsbRegexs() { 2602 enforceTetherAccessPermission(); 2603 if (isTetheringSupported()) { 2604 return mTethering.getTetherableUsbRegexs(); 2605 } else { 2606 return new String[0]; 2607 } 2608 } 2609 2610 public String[] getTetherableWifiRegexs() { 2611 enforceTetherAccessPermission(); 2612 if (isTetheringSupported()) { 2613 return mTethering.getTetherableWifiRegexs(); 2614 } else { 2615 return new String[0]; 2616 } 2617 } 2618 2619 public String[] getTetherableBluetoothRegexs() { 2620 enforceTetherAccessPermission(); 2621 if (isTetheringSupported()) { 2622 return mTethering.getTetherableBluetoothRegexs(); 2623 } else { 2624 return new String[0]; 2625 } 2626 } 2627 2628 public int setUsbTethering(boolean enable) { 2629 ConnectivityManager.enforceTetherChangePermission(mContext); 2630 if (isTetheringSupported()) { 2631 return mTethering.setUsbTethering(enable); 2632 } else { 2633 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2634 } 2635 } 2636 2637 // TODO - move iface listing, queries, etc to new module 2638 // javadoc from interface 2639 public String[] getTetherableIfaces() { 2640 enforceTetherAccessPermission(); 2641 return mTethering.getTetherableIfaces(); 2642 } 2643 2644 public String[] getTetheredIfaces() { 2645 enforceTetherAccessPermission(); 2646 return mTethering.getTetheredIfaces(); 2647 } 2648 2649 public String[] getTetheringErroredIfaces() { 2650 enforceTetherAccessPermission(); 2651 return mTethering.getErroredIfaces(); 2652 } 2653 2654 public String[] getTetheredDhcpRanges() { 2655 enforceConnectivityInternalPermission(); 2656 return mTethering.getTetheredDhcpRanges(); 2657 } 2658 2659 // if ro.tether.denied = true we default to no tethering 2660 // gservices could set the secure setting to 1 though to enable it on a build where it 2661 // had previously been turned off. 2662 public boolean isTetheringSupported() { 2663 enforceTetherAccessPermission(); 2664 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2665 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2666 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2667 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2668 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2669 mTethering.getTetherableWifiRegexs().length != 0 || 2670 mTethering.getTetherableBluetoothRegexs().length != 0) && 2671 mTethering.getUpstreamIfaceTypes().length != 0); 2672 } 2673 2674 // Called when we lose the default network and have no replacement yet. 2675 // This will automatically be cleared after X seconds or a new default network 2676 // becomes CONNECTED, whichever happens first. The timer is started by the 2677 // first caller and not restarted by subsequent callers. 2678 private void requestNetworkTransitionWakelock(String forWhom) { 2679 int serialNum = 0; 2680 synchronized (this) { 2681 if (mNetTransitionWakeLock.isHeld()) return; 2682 serialNum = ++mNetTransitionWakeLockSerialNumber; 2683 mNetTransitionWakeLock.acquire(); 2684 mNetTransitionWakeLockCausedBy = forWhom; 2685 } 2686 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2687 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2688 mNetTransitionWakeLockTimeout); 2689 return; 2690 } 2691 2692 // 100 percent is full good, 0 is full bad. 2693 public void reportInetCondition(int networkType, int percentage) { 2694 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2695 if (nai == null) return; 2696 reportNetworkConnectivity(nai.network, percentage > 50); 2697 } 2698 2699 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2700 enforceAccessPermission(); 2701 enforceInternetPermission(); 2702 2703 NetworkAgentInfo nai; 2704 if (network == null) { 2705 nai = getDefaultNetwork(); 2706 } else { 2707 nai = getNetworkAgentInfoForNetwork(network); 2708 } 2709 if (nai == null) return; 2710 // Revalidate if the app report does not match our current validated state. 2711 if (hasConnectivity == nai.lastValidated) return; 2712 final int uid = Binder.getCallingUid(); 2713 if (DBG) { 2714 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2715 ") by " + uid); 2716 } 2717 synchronized (nai) { 2718 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2719 // which isn't meant to work on uncreated networks. 2720 if (!nai.created) return; 2721 2722 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2723 2724 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2725 } 2726 } 2727 2728 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2729 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2730 enforceConnectivityInternalPermission(); 2731 } 2732 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2733 if (nai == null) return; 2734 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2735 actionToken); 2736 } 2737 2738 private ProxyInfo getDefaultProxy() { 2739 // this information is already available as a world read/writable jvm property 2740 // so this API change wouldn't have a benifit. It also breaks the passing 2741 // of proxy info to all the JVMs. 2742 // enforceAccessPermission(); 2743 synchronized (mProxyLock) { 2744 ProxyInfo ret = mGlobalProxy; 2745 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2746 return ret; 2747 } 2748 } 2749 2750 public ProxyInfo getProxyForNetwork(Network network) { 2751 if (network == null) return getDefaultProxy(); 2752 final ProxyInfo globalProxy = getGlobalProxy(); 2753 if (globalProxy != null) return globalProxy; 2754 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2755 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2756 // caller may not have. 2757 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2758 if (nai == null) return null; 2759 synchronized (nai) { 2760 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2761 if (proxyInfo == null) return null; 2762 return new ProxyInfo(proxyInfo); 2763 } 2764 } 2765 2766 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2767 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2768 // proxy is null then there is no proxy in place). 2769 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2770 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2771 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2772 proxy = null; 2773 } 2774 return proxy; 2775 } 2776 2777 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2778 // better for determining if a new proxy broadcast is necessary: 2779 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2780 // avoid unnecessary broadcasts. 2781 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2782 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2783 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2784 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2785 // all set. 2786 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2787 a = canonicalizeProxyInfo(a); 2788 b = canonicalizeProxyInfo(b); 2789 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2790 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2791 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2792 } 2793 2794 public void setGlobalProxy(ProxyInfo proxyProperties) { 2795 enforceConnectivityInternalPermission(); 2796 2797 synchronized (mProxyLock) { 2798 if (proxyProperties == mGlobalProxy) return; 2799 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2800 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2801 2802 String host = ""; 2803 int port = 0; 2804 String exclList = ""; 2805 String pacFileUrl = ""; 2806 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2807 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2808 if (!proxyProperties.isValid()) { 2809 if (DBG) 2810 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2811 return; 2812 } 2813 mGlobalProxy = new ProxyInfo(proxyProperties); 2814 host = mGlobalProxy.getHost(); 2815 port = mGlobalProxy.getPort(); 2816 exclList = mGlobalProxy.getExclusionListAsString(); 2817 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2818 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2819 } 2820 } else { 2821 mGlobalProxy = null; 2822 } 2823 ContentResolver res = mContext.getContentResolver(); 2824 final long token = Binder.clearCallingIdentity(); 2825 try { 2826 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2827 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2828 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2829 exclList); 2830 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2831 } finally { 2832 Binder.restoreCallingIdentity(token); 2833 } 2834 2835 if (mGlobalProxy == null) { 2836 proxyProperties = mDefaultProxy; 2837 } 2838 sendProxyBroadcast(proxyProperties); 2839 } 2840 } 2841 2842 private void loadGlobalProxy() { 2843 ContentResolver res = mContext.getContentResolver(); 2844 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2845 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2846 String exclList = Settings.Global.getString(res, 2847 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2848 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2849 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2850 ProxyInfo proxyProperties; 2851 if (!TextUtils.isEmpty(pacFileUrl)) { 2852 proxyProperties = new ProxyInfo(pacFileUrl); 2853 } else { 2854 proxyProperties = new ProxyInfo(host, port, exclList); 2855 } 2856 if (!proxyProperties.isValid()) { 2857 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2858 return; 2859 } 2860 2861 synchronized (mProxyLock) { 2862 mGlobalProxy = proxyProperties; 2863 } 2864 } 2865 } 2866 2867 public ProxyInfo getGlobalProxy() { 2868 // this information is already available as a world read/writable jvm property 2869 // so this API change wouldn't have a benifit. It also breaks the passing 2870 // of proxy info to all the JVMs. 2871 // enforceAccessPermission(); 2872 synchronized (mProxyLock) { 2873 return mGlobalProxy; 2874 } 2875 } 2876 2877 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2878 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2879 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2880 proxy = null; 2881 } 2882 synchronized (mProxyLock) { 2883 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2884 if (mDefaultProxy == proxy) return; // catches repeated nulls 2885 if (proxy != null && !proxy.isValid()) { 2886 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2887 return; 2888 } 2889 2890 // This call could be coming from the PacManager, containing the port of the local 2891 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2892 // global (to get the correct local port), and send a broadcast. 2893 // TODO: Switch PacManager to have its own message to send back rather than 2894 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2895 if ((mGlobalProxy != null) && (proxy != null) 2896 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2897 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2898 mGlobalProxy = proxy; 2899 sendProxyBroadcast(mGlobalProxy); 2900 return; 2901 } 2902 mDefaultProxy = proxy; 2903 2904 if (mGlobalProxy != null) return; 2905 if (!mDefaultProxyDisabled) { 2906 sendProxyBroadcast(proxy); 2907 } 2908 } 2909 } 2910 2911 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2912 // This method gets called when any network changes proxy, but the broadcast only ever contains 2913 // the default proxy (even if it hasn't changed). 2914 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2915 // world where an app might be bound to a non-default network. 2916 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2917 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2918 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2919 2920 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2921 sendProxyBroadcast(getDefaultProxy()); 2922 } 2923 } 2924 2925 private void handleDeprecatedGlobalHttpProxy() { 2926 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2927 Settings.Global.HTTP_PROXY); 2928 if (!TextUtils.isEmpty(proxy)) { 2929 String data[] = proxy.split(":"); 2930 if (data.length == 0) { 2931 return; 2932 } 2933 2934 String proxyHost = data[0]; 2935 int proxyPort = 8080; 2936 if (data.length > 1) { 2937 try { 2938 proxyPort = Integer.parseInt(data[1]); 2939 } catch (NumberFormatException e) { 2940 return; 2941 } 2942 } 2943 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2944 setGlobalProxy(p); 2945 } 2946 } 2947 2948 private void sendProxyBroadcast(ProxyInfo proxy) { 2949 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2950 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2951 if (DBG) log("sending Proxy Broadcast for " + proxy); 2952 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2953 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2954 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2955 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2956 final long ident = Binder.clearCallingIdentity(); 2957 try { 2958 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2959 } finally { 2960 Binder.restoreCallingIdentity(ident); 2961 } 2962 } 2963 2964 private static class SettingsObserver extends ContentObserver { 2965 final private HashMap<Uri, Integer> mUriEventMap; 2966 final private Context mContext; 2967 final private Handler mHandler; 2968 2969 SettingsObserver(Context context, Handler handler) { 2970 super(null); 2971 mUriEventMap = new HashMap<Uri, Integer>(); 2972 mContext = context; 2973 mHandler = handler; 2974 } 2975 2976 void observe(Uri uri, int what) { 2977 mUriEventMap.put(uri, what); 2978 final ContentResolver resolver = mContext.getContentResolver(); 2979 resolver.registerContentObserver(uri, false, this); 2980 } 2981 2982 @Override 2983 public void onChange(boolean selfChange) { 2984 Slog.wtf(TAG, "Should never be reached."); 2985 } 2986 2987 @Override 2988 public void onChange(boolean selfChange, Uri uri) { 2989 final Integer what = mUriEventMap.get(uri); 2990 if (what != null) { 2991 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2992 } else { 2993 loge("No matching event to send for URI=" + uri); 2994 } 2995 } 2996 } 2997 2998 private static void log(String s) { 2999 Slog.d(TAG, s); 3000 } 3001 3002 private static void loge(String s) { 3003 Slog.e(TAG, s); 3004 } 3005 3006 private static <T> T checkNotNull(T value, String message) { 3007 if (value == null) { 3008 throw new NullPointerException(message); 3009 } 3010 return value; 3011 } 3012 3013 /** 3014 * Prepare for a VPN application. 3015 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3016 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3017 * 3018 * @param oldPackage Package name of the application which currently controls VPN, which will 3019 * be replaced. If there is no such application, this should should either be 3020 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3021 * @param newPackage Package name of the application which should gain control of VPN, or 3022 * {@code null} to disable. 3023 * @param userId User for whom to prepare the new VPN. 3024 * 3025 * @hide 3026 */ 3027 @Override 3028 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3029 int userId) { 3030 enforceCrossUserPermission(userId); 3031 throwIfLockdownEnabled(); 3032 3033 synchronized(mVpns) { 3034 Vpn vpn = mVpns.get(userId); 3035 if (vpn != null) { 3036 return vpn.prepare(oldPackage, newPackage); 3037 } else { 3038 return false; 3039 } 3040 } 3041 } 3042 3043 /** 3044 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3045 * This method is used by system-privileged apps. 3046 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3047 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3048 * 3049 * @param packageName The package for which authorization state should change. 3050 * @param userId User for whom {@code packageName} is installed. 3051 * @param authorized {@code true} if this app should be able to start a VPN connection without 3052 * explicit user approval, {@code false} if not. 3053 * 3054 * @hide 3055 */ 3056 @Override 3057 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3058 enforceCrossUserPermission(userId); 3059 3060 synchronized(mVpns) { 3061 Vpn vpn = mVpns.get(userId); 3062 if (vpn != null) { 3063 vpn.setPackageAuthorization(packageName, authorized); 3064 } 3065 } 3066 } 3067 3068 /** 3069 * Configure a TUN interface and return its file descriptor. Parameters 3070 * are encoded and opaque to this class. This method is used by VpnBuilder 3071 * and not available in ConnectivityManager. Permissions are checked in 3072 * Vpn class. 3073 * @hide 3074 */ 3075 @Override 3076 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3077 throwIfLockdownEnabled(); 3078 int user = UserHandle.getUserId(Binder.getCallingUid()); 3079 synchronized(mVpns) { 3080 return mVpns.get(user).establish(config); 3081 } 3082 } 3083 3084 /** 3085 * Start legacy VPN, controlling native daemons as needed. Creates a 3086 * secondary thread to perform connection work, returning quickly. 3087 */ 3088 @Override 3089 public void startLegacyVpn(VpnProfile profile) { 3090 throwIfLockdownEnabled(); 3091 final LinkProperties egress = getActiveLinkProperties(); 3092 if (egress == null) { 3093 throw new IllegalStateException("Missing active network connection"); 3094 } 3095 int user = UserHandle.getUserId(Binder.getCallingUid()); 3096 synchronized(mVpns) { 3097 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3098 } 3099 } 3100 3101 /** 3102 * Return the information of the ongoing legacy VPN. This method is used 3103 * by VpnSettings and not available in ConnectivityManager. Permissions 3104 * are checked in Vpn class. 3105 */ 3106 @Override 3107 public LegacyVpnInfo getLegacyVpnInfo() { 3108 throwIfLockdownEnabled(); 3109 int user = UserHandle.getUserId(Binder.getCallingUid()); 3110 synchronized(mVpns) { 3111 return mVpns.get(user).getLegacyVpnInfo(); 3112 } 3113 } 3114 3115 /** 3116 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3117 * and not available in ConnectivityManager. 3118 */ 3119 @Override 3120 public VpnInfo[] getAllVpnInfo() { 3121 enforceConnectivityInternalPermission(); 3122 if (mLockdownEnabled) { 3123 return new VpnInfo[0]; 3124 } 3125 3126 synchronized(mVpns) { 3127 List<VpnInfo> infoList = new ArrayList<>(); 3128 for (int i = 0; i < mVpns.size(); i++) { 3129 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3130 if (info != null) { 3131 infoList.add(info); 3132 } 3133 } 3134 return infoList.toArray(new VpnInfo[infoList.size()]); 3135 } 3136 } 3137 3138 /** 3139 * @return VPN information for accounting, or null if we can't retrieve all required 3140 * information, e.g primary underlying iface. 3141 */ 3142 @Nullable 3143 private VpnInfo createVpnInfo(Vpn vpn) { 3144 VpnInfo info = vpn.getVpnInfo(); 3145 if (info == null) { 3146 return null; 3147 } 3148 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3149 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3150 // the underlyingNetworks list. 3151 if (underlyingNetworks == null) { 3152 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3153 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3154 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3155 } 3156 } else if (underlyingNetworks.length > 0) { 3157 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3158 if (linkProperties != null) { 3159 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3160 } 3161 } 3162 return info.primaryUnderlyingIface == null ? null : info; 3163 } 3164 3165 /** 3166 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3167 * VpnDialogs and not available in ConnectivityManager. 3168 * Permissions are checked in Vpn class. 3169 * @hide 3170 */ 3171 @Override 3172 public VpnConfig getVpnConfig(int userId) { 3173 enforceCrossUserPermission(userId); 3174 synchronized(mVpns) { 3175 Vpn vpn = mVpns.get(userId); 3176 if (vpn != null) { 3177 return vpn.getVpnConfig(); 3178 } else { 3179 return null; 3180 } 3181 } 3182 } 3183 3184 @Override 3185 public boolean updateLockdownVpn() { 3186 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3187 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3188 return false; 3189 } 3190 3191 // Tear down existing lockdown if profile was removed 3192 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3193 if (mLockdownEnabled) { 3194 if (!mKeyStore.isUnlocked()) { 3195 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3196 return false; 3197 } 3198 3199 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3200 final VpnProfile profile = VpnProfile.decode( 3201 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3202 int user = UserHandle.getUserId(Binder.getCallingUid()); 3203 synchronized(mVpns) { 3204 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3205 profile)); 3206 } 3207 } else { 3208 setLockdownTracker(null); 3209 } 3210 3211 return true; 3212 } 3213 3214 /** 3215 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3216 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3217 */ 3218 private void setLockdownTracker(LockdownVpnTracker tracker) { 3219 // Shutdown any existing tracker 3220 final LockdownVpnTracker existing = mLockdownTracker; 3221 mLockdownTracker = null; 3222 if (existing != null) { 3223 existing.shutdown(); 3224 } 3225 3226 try { 3227 if (tracker != null) { 3228 mNetd.setFirewallEnabled(true); 3229 mNetd.setFirewallInterfaceRule("lo", true); 3230 mLockdownTracker = tracker; 3231 mLockdownTracker.init(); 3232 } else { 3233 mNetd.setFirewallEnabled(false); 3234 } 3235 } catch (RemoteException e) { 3236 // ignored; NMS lives inside system_server 3237 } 3238 } 3239 3240 private void throwIfLockdownEnabled() { 3241 if (mLockdownEnabled) { 3242 throw new IllegalStateException("Unavailable in lockdown mode"); 3243 } 3244 } 3245 3246 @Override 3247 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3248 // TODO: Remove? Any reason to trigger a provisioning check? 3249 return -1; 3250 } 3251 3252 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3253 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3254 3255 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3256 if (DBG) { 3257 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3258 + " action=" + action); 3259 } 3260 Intent intent = new Intent(action); 3261 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3262 // Concatenate the range of types onto the range of NetIDs. 3263 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3264 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3265 networkType, null, pendingIntent); 3266 } 3267 3268 /** 3269 * Show or hide network provisioning notifications. 3270 * 3271 * We use notifications for two purposes: to notify that a network requires sign in 3272 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3273 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3274 * particular network we can display the notification type that was most recently requested. 3275 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3276 * might first display NO_INTERNET, and then when the captive portal check completes, display 3277 * SIGN_IN. 3278 * 3279 * @param id an identifier that uniquely identifies this notification. This must match 3280 * between show and hide calls. We use the NetID value but for legacy callers 3281 * we concatenate the range of types with the range of NetIDs. 3282 */ 3283 private void setProvNotificationVisibleIntent(boolean visible, int id, 3284 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent) { 3285 if (DBG) { 3286 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3287 + " networkType=" + getNetworkTypeName(networkType) 3288 + " extraInfo=" + extraInfo); 3289 } 3290 3291 Resources r = Resources.getSystem(); 3292 NotificationManager notificationManager = (NotificationManager) mContext 3293 .getSystemService(Context.NOTIFICATION_SERVICE); 3294 3295 if (visible) { 3296 CharSequence title; 3297 CharSequence details; 3298 int icon; 3299 Notification notification = new Notification(); 3300 if (notifyType == NotificationType.NO_INTERNET && 3301 networkType == ConnectivityManager.TYPE_WIFI) { 3302 title = r.getString(R.string.wifi_no_internet, 0); 3303 details = r.getString(R.string.wifi_no_internet_detailed); 3304 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3305 } else if (notifyType == NotificationType.SIGN_IN) { 3306 switch (networkType) { 3307 case ConnectivityManager.TYPE_WIFI: 3308 title = r.getString(R.string.wifi_available_sign_in, 0); 3309 details = r.getString(R.string.network_available_sign_in_detailed, 3310 extraInfo); 3311 icon = R.drawable.stat_notify_wifi_in_range; 3312 break; 3313 case ConnectivityManager.TYPE_MOBILE: 3314 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3315 title = r.getString(R.string.network_available_sign_in, 0); 3316 // TODO: Change this to pull from NetworkInfo once a printable 3317 // name has been added to it 3318 details = mTelephonyManager.getNetworkOperatorName(); 3319 icon = R.drawable.stat_notify_rssi_in_range; 3320 break; 3321 default: 3322 title = r.getString(R.string.network_available_sign_in, 0); 3323 details = r.getString(R.string.network_available_sign_in_detailed, 3324 extraInfo); 3325 icon = R.drawable.stat_notify_rssi_in_range; 3326 break; 3327 } 3328 } else { 3329 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3330 + getNetworkTypeName(networkType)); 3331 return; 3332 } 3333 3334 notification.when = 0; 3335 notification.icon = icon; 3336 notification.flags = Notification.FLAG_AUTO_CANCEL; 3337 notification.tickerText = title; 3338 notification.color = mContext.getColor( 3339 com.android.internal.R.color.system_notification_accent_color); 3340 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3341 notification.contentIntent = intent; 3342 3343 try { 3344 notificationManager.notify(NOTIFICATION_ID, id, notification); 3345 } catch (NullPointerException npe) { 3346 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3347 npe.printStackTrace(); 3348 } 3349 } else { 3350 try { 3351 notificationManager.cancel(NOTIFICATION_ID, id); 3352 } catch (NullPointerException npe) { 3353 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3354 npe.printStackTrace(); 3355 } 3356 } 3357 } 3358 3359 /** Location to an updatable file listing carrier provisioning urls. 3360 * An example: 3361 * 3362 * <?xml version="1.0" encoding="utf-8"?> 3363 * <provisioningUrls> 3364 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3365 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3366 * </provisioningUrls> 3367 */ 3368 private static final String PROVISIONING_URL_PATH = 3369 "/data/misc/radio/provisioning_urls.xml"; 3370 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3371 3372 /** XML tag for root element. */ 3373 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3374 /** XML tag for individual url */ 3375 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3376 /** XML tag for redirected url */ 3377 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3378 /** XML attribute for mcc */ 3379 private static final String ATTR_MCC = "mcc"; 3380 /** XML attribute for mnc */ 3381 private static final String ATTR_MNC = "mnc"; 3382 3383 private static final int REDIRECTED_PROVISIONING = 1; 3384 private static final int PROVISIONING = 2; 3385 3386 private String getProvisioningUrlBaseFromFile(int type) { 3387 FileReader fileReader = null; 3388 XmlPullParser parser = null; 3389 Configuration config = mContext.getResources().getConfiguration(); 3390 String tagType; 3391 3392 switch (type) { 3393 case PROVISIONING: 3394 tagType = TAG_PROVISIONING_URL; 3395 break; 3396 case REDIRECTED_PROVISIONING: 3397 tagType = TAG_REDIRECTED_URL; 3398 break; 3399 default: 3400 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3401 type); 3402 } 3403 3404 try { 3405 fileReader = new FileReader(mProvisioningUrlFile); 3406 parser = Xml.newPullParser(); 3407 parser.setInput(fileReader); 3408 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3409 3410 while (true) { 3411 XmlUtils.nextElement(parser); 3412 3413 String element = parser.getName(); 3414 if (element == null) break; 3415 3416 if (element.equals(tagType)) { 3417 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3418 try { 3419 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3420 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3421 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3422 parser.next(); 3423 if (parser.getEventType() == XmlPullParser.TEXT) { 3424 return parser.getText(); 3425 } 3426 } 3427 } 3428 } catch (NumberFormatException e) { 3429 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3430 } 3431 } 3432 } 3433 return null; 3434 } catch (FileNotFoundException e) { 3435 loge("Carrier Provisioning Urls file not found"); 3436 } catch (XmlPullParserException e) { 3437 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3438 } catch (IOException e) { 3439 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3440 } finally { 3441 if (fileReader != null) { 3442 try { 3443 fileReader.close(); 3444 } catch (IOException e) {} 3445 } 3446 } 3447 return null; 3448 } 3449 3450 @Override 3451 public String getMobileRedirectedProvisioningUrl() { 3452 enforceConnectivityInternalPermission(); 3453 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3454 if (TextUtils.isEmpty(url)) { 3455 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3456 } 3457 return url; 3458 } 3459 3460 @Override 3461 public String getMobileProvisioningUrl() { 3462 enforceConnectivityInternalPermission(); 3463 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3464 if (TextUtils.isEmpty(url)) { 3465 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3466 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3467 } else { 3468 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3469 } 3470 // populate the iccid, imei and phone number in the provisioning url. 3471 if (!TextUtils.isEmpty(url)) { 3472 String phoneNumber = mTelephonyManager.getLine1Number(); 3473 if (TextUtils.isEmpty(phoneNumber)) { 3474 phoneNumber = "0000000000"; 3475 } 3476 url = String.format(url, 3477 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3478 mTelephonyManager.getDeviceId() /* IMEI */, 3479 phoneNumber /* Phone numer */); 3480 } 3481 3482 return url; 3483 } 3484 3485 @Override 3486 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3487 String action) { 3488 enforceConnectivityInternalPermission(); 3489 final long ident = Binder.clearCallingIdentity(); 3490 try { 3491 setProvNotificationVisible(visible, networkType, action); 3492 } finally { 3493 Binder.restoreCallingIdentity(ident); 3494 } 3495 } 3496 3497 @Override 3498 public void setAirplaneMode(boolean enable) { 3499 enforceConnectivityInternalPermission(); 3500 final long ident = Binder.clearCallingIdentity(); 3501 try { 3502 final ContentResolver cr = mContext.getContentResolver(); 3503 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3504 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3505 intent.putExtra("state", enable); 3506 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3507 } finally { 3508 Binder.restoreCallingIdentity(ident); 3509 } 3510 } 3511 3512 private void onUserStart(int userId) { 3513 synchronized(mVpns) { 3514 Vpn userVpn = mVpns.get(userId); 3515 if (userVpn != null) { 3516 loge("Starting user already has a VPN"); 3517 return; 3518 } 3519 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3520 mVpns.put(userId, userVpn); 3521 } 3522 } 3523 3524 private void onUserStop(int userId) { 3525 synchronized(mVpns) { 3526 Vpn userVpn = mVpns.get(userId); 3527 if (userVpn == null) { 3528 loge("Stopping user has no VPN"); 3529 return; 3530 } 3531 mVpns.delete(userId); 3532 } 3533 } 3534 3535 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3536 @Override 3537 public void onReceive(Context context, Intent intent) { 3538 final String action = intent.getAction(); 3539 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3540 if (userId == UserHandle.USER_NULL) return; 3541 3542 if (Intent.ACTION_USER_STARTING.equals(action)) { 3543 onUserStart(userId); 3544 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3545 onUserStop(userId); 3546 } 3547 } 3548 }; 3549 3550 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3551 new HashMap<Messenger, NetworkFactoryInfo>(); 3552 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3553 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3554 3555 private static class NetworkFactoryInfo { 3556 public final String name; 3557 public final Messenger messenger; 3558 public final AsyncChannel asyncChannel; 3559 3560 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3561 this.name = name; 3562 this.messenger = messenger; 3563 this.asyncChannel = asyncChannel; 3564 } 3565 } 3566 3567 /** 3568 * Tracks info about the requester. 3569 * Also used to notice when the calling process dies so we can self-expire 3570 */ 3571 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3572 static final boolean REQUEST = true; 3573 static final boolean LISTEN = false; 3574 3575 final NetworkRequest request; 3576 final PendingIntent mPendingIntent; 3577 boolean mPendingIntentSent; 3578 private final IBinder mBinder; 3579 final int mPid; 3580 final int mUid; 3581 final Messenger messenger; 3582 final boolean isRequest; 3583 3584 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3585 request = r; 3586 mPendingIntent = pi; 3587 messenger = null; 3588 mBinder = null; 3589 mPid = getCallingPid(); 3590 mUid = getCallingUid(); 3591 this.isRequest = isRequest; 3592 } 3593 3594 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3595 super(); 3596 messenger = m; 3597 request = r; 3598 mBinder = binder; 3599 mPid = getCallingPid(); 3600 mUid = getCallingUid(); 3601 this.isRequest = isRequest; 3602 mPendingIntent = null; 3603 3604 try { 3605 mBinder.linkToDeath(this, 0); 3606 } catch (RemoteException e) { 3607 binderDied(); 3608 } 3609 } 3610 3611 void unlinkDeathRecipient() { 3612 if (mBinder != null) { 3613 mBinder.unlinkToDeath(this, 0); 3614 } 3615 } 3616 3617 public void binderDied() { 3618 log("ConnectivityService NetworkRequestInfo binderDied(" + 3619 request + ", " + mBinder + ")"); 3620 releaseNetworkRequest(request); 3621 } 3622 3623 public String toString() { 3624 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3625 mPid + " for " + request + 3626 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3627 } 3628 } 3629 3630 @Override 3631 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3632 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3633 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3634 enforceNetworkRequestPermissions(networkCapabilities); 3635 enforceMeteredApnPolicy(networkCapabilities); 3636 3637 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3638 throw new IllegalArgumentException("Bad timeout specified"); 3639 } 3640 3641 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3642 nextNetworkRequestId()); 3643 if (DBG) log("requestNetwork for " + networkRequest); 3644 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3645 NetworkRequestInfo.REQUEST); 3646 3647 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3648 if (timeoutMs > 0) { 3649 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3650 nri), timeoutMs); 3651 } 3652 return networkRequest; 3653 } 3654 3655 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3656 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3657 enforceConnectivityInternalPermission(); 3658 } else { 3659 enforceChangePermission(); 3660 } 3661 } 3662 3663 @Override 3664 public boolean requestBandwidthUpdate(Network network) { 3665 enforceAccessPermission(); 3666 NetworkAgentInfo nai = null; 3667 if (network == null) { 3668 return false; 3669 } 3670 synchronized (mNetworkForNetId) { 3671 nai = mNetworkForNetId.get(network.netId); 3672 } 3673 if (nai != null) { 3674 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3675 return true; 3676 } 3677 return false; 3678 } 3679 3680 3681 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3682 // if UID is restricted, don't allow them to bring up metered APNs 3683 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3684 final int uidRules; 3685 final int uid = Binder.getCallingUid(); 3686 synchronized(mRulesLock) { 3687 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3688 } 3689 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3690 // we could silently fail or we can filter the available nets to only give 3691 // them those they have access to. Chose the more useful 3692 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3693 } 3694 } 3695 } 3696 3697 @Override 3698 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3699 PendingIntent operation) { 3700 checkNotNull(operation, "PendingIntent cannot be null."); 3701 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3702 enforceNetworkRequestPermissions(networkCapabilities); 3703 enforceMeteredApnPolicy(networkCapabilities); 3704 3705 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3706 nextNetworkRequestId()); 3707 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3708 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3709 NetworkRequestInfo.REQUEST); 3710 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3711 nri)); 3712 return networkRequest; 3713 } 3714 3715 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3716 mHandler.sendMessageDelayed( 3717 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3718 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3719 } 3720 3721 @Override 3722 public void releasePendingNetworkRequest(PendingIntent operation) { 3723 checkNotNull(operation, "PendingIntent cannot be null."); 3724 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3725 getCallingUid(), 0, operation)); 3726 } 3727 3728 // In order to implement the compatibility measure for pre-M apps that call 3729 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3730 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3731 // This ensures it has permission to do so. 3732 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3733 if (nc == null) { 3734 return false; 3735 } 3736 int[] transportTypes = nc.getTransportTypes(); 3737 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3738 return false; 3739 } 3740 try { 3741 mContext.enforceCallingOrSelfPermission( 3742 android.Manifest.permission.ACCESS_WIFI_STATE, 3743 "ConnectivityService"); 3744 } catch (SecurityException e) { 3745 return false; 3746 } 3747 return true; 3748 } 3749 3750 @Override 3751 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3752 Messenger messenger, IBinder binder) { 3753 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3754 enforceAccessPermission(); 3755 } 3756 3757 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3758 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3759 if (DBG) log("listenForNetwork for " + networkRequest); 3760 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3761 NetworkRequestInfo.LISTEN); 3762 3763 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3764 return networkRequest; 3765 } 3766 3767 @Override 3768 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3769 PendingIntent operation) { 3770 checkNotNull(operation, "PendingIntent cannot be null."); 3771 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3772 enforceAccessPermission(); 3773 } 3774 3775 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3776 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3777 if (DBG) log("pendingListenForNetwork for " + networkRequest + " to trigger " + operation); 3778 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3779 NetworkRequestInfo.LISTEN); 3780 3781 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3782 } 3783 3784 @Override 3785 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3786 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3787 0, networkRequest)); 3788 } 3789 3790 @Override 3791 public void registerNetworkFactory(Messenger messenger, String name) { 3792 enforceConnectivityInternalPermission(); 3793 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3794 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3795 } 3796 3797 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3798 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3799 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3800 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3801 } 3802 3803 @Override 3804 public void unregisterNetworkFactory(Messenger messenger) { 3805 enforceConnectivityInternalPermission(); 3806 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3807 } 3808 3809 private void handleUnregisterNetworkFactory(Messenger messenger) { 3810 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3811 if (nfi == null) { 3812 loge("Failed to find Messenger in unregisterNetworkFactory"); 3813 return; 3814 } 3815 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3816 } 3817 3818 /** 3819 * NetworkAgentInfo supporting a request by requestId. 3820 * These have already been vetted (their Capabilities satisfy the request) 3821 * and the are the highest scored network available. 3822 * the are keyed off the Requests requestId. 3823 */ 3824 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3825 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3826 new SparseArray<NetworkAgentInfo>(); 3827 3828 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3829 @GuardedBy("mNetworkForNetId") 3830 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3831 new SparseArray<NetworkAgentInfo>(); 3832 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3833 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3834 // there may not be a strict 1:1 correlation between the two. 3835 @GuardedBy("mNetworkForNetId") 3836 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3837 3838 // NetworkAgentInfo keyed off its connecting messenger 3839 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3840 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3841 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3842 new HashMap<Messenger, NetworkAgentInfo>(); 3843 3844 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3845 private final NetworkRequest mDefaultRequest; 3846 3847 // Request used to optionally keep mobile data active even when higher 3848 // priority networks like Wi-Fi are active. 3849 private final NetworkRequest mDefaultMobileDataRequest; 3850 3851 private NetworkAgentInfo getDefaultNetwork() { 3852 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3853 } 3854 3855 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3856 return nai == getDefaultNetwork(); 3857 } 3858 3859 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3860 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3861 int currentScore, NetworkMisc networkMisc) { 3862 enforceConnectivityInternalPermission(); 3863 3864 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3865 // satisfies mDefaultRequest. 3866 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3867 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3868 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3869 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3870 synchronized (this) { 3871 nai.networkMonitor.systemReady = mSystemReady; 3872 } 3873 if (DBG) log("registerNetworkAgent " + nai); 3874 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3875 return nai.network.netId; 3876 } 3877 3878 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3879 if (VDBG) log("Got NetworkAgent Messenger"); 3880 mNetworkAgentInfos.put(na.messenger, na); 3881 synchronized (mNetworkForNetId) { 3882 mNetworkForNetId.put(na.network.netId, na); 3883 } 3884 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3885 NetworkInfo networkInfo = na.networkInfo; 3886 na.networkInfo = null; 3887 updateNetworkInfo(na, networkInfo); 3888 } 3889 3890 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3891 LinkProperties newLp = networkAgent.linkProperties; 3892 int netId = networkAgent.network.netId; 3893 3894 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3895 // we do anything else, make sure its LinkProperties are accurate. 3896 if (networkAgent.clatd != null) { 3897 networkAgent.clatd.fixupLinkProperties(oldLp); 3898 } 3899 3900 updateInterfaces(newLp, oldLp, netId); 3901 updateMtu(newLp, oldLp); 3902 // TODO - figure out what to do for clat 3903// for (LinkProperties lp : newLp.getStackedLinks()) { 3904// updateMtu(lp, null); 3905// } 3906 updateTcpBufferSizes(networkAgent); 3907 3908 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3909 // In L, we used it only when the network had Internet access but provided no DNS servers. 3910 // For now, just disable it, and if disabling it doesn't break things, remove it. 3911 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3912 // NET_CAPABILITY_INTERNET); 3913 final boolean useDefaultDns = false; 3914 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3915 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3916 3917 updateClat(newLp, oldLp, networkAgent); 3918 if (isDefaultNetwork(networkAgent)) { 3919 handleApplyDefaultProxy(newLp.getHttpProxy()); 3920 } else { 3921 updateProxy(newLp, oldLp, networkAgent); 3922 } 3923 // TODO - move this check to cover the whole function 3924 if (!Objects.equals(newLp, oldLp)) { 3925 notifyIfacesChanged(); 3926 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3927 } 3928 } 3929 3930 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3931 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3932 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3933 3934 if (!wasRunningClat && shouldRunClat) { 3935 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3936 nai.clatd.start(); 3937 } else if (wasRunningClat && !shouldRunClat) { 3938 nai.clatd.stop(); 3939 } 3940 } 3941 3942 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3943 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3944 if (oldLp != null) { 3945 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3946 } else if (newLp != null) { 3947 interfaceDiff.added = newLp.getAllInterfaceNames(); 3948 } 3949 for (String iface : interfaceDiff.added) { 3950 try { 3951 if (DBG) log("Adding iface " + iface + " to network " + netId); 3952 mNetd.addInterfaceToNetwork(iface, netId); 3953 } catch (Exception e) { 3954 loge("Exception adding interface: " + e); 3955 } 3956 } 3957 for (String iface : interfaceDiff.removed) { 3958 try { 3959 if (DBG) log("Removing iface " + iface + " from network " + netId); 3960 mNetd.removeInterfaceFromNetwork(iface, netId); 3961 } catch (Exception e) { 3962 loge("Exception removing interface: " + e); 3963 } 3964 } 3965 } 3966 3967 /** 3968 * Have netd update routes from oldLp to newLp. 3969 * @return true if routes changed between oldLp and newLp 3970 */ 3971 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3972 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3973 if (oldLp != null) { 3974 routeDiff = oldLp.compareAllRoutes(newLp); 3975 } else if (newLp != null) { 3976 routeDiff.added = newLp.getAllRoutes(); 3977 } 3978 3979 // add routes before removing old in case it helps with continuous connectivity 3980 3981 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3982 for (RouteInfo route : routeDiff.added) { 3983 if (route.hasGateway()) continue; 3984 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3985 try { 3986 mNetd.addRoute(netId, route); 3987 } catch (Exception e) { 3988 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3989 loge("Exception in addRoute for non-gateway: " + e); 3990 } 3991 } 3992 } 3993 for (RouteInfo route : routeDiff.added) { 3994 if (route.hasGateway() == false) continue; 3995 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3996 try { 3997 mNetd.addRoute(netId, route); 3998 } catch (Exception e) { 3999 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4000 loge("Exception in addRoute for gateway: " + e); 4001 } 4002 } 4003 } 4004 4005 for (RouteInfo route : routeDiff.removed) { 4006 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4007 try { 4008 mNetd.removeRoute(netId, route); 4009 } catch (Exception e) { 4010 loge("Exception in removeRoute: " + e); 4011 } 4012 } 4013 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4014 } 4015 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4016 boolean flush, boolean useDefaultDns) { 4017 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4018 Collection<InetAddress> dnses = newLp.getDnsServers(); 4019 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4020 dnses = new ArrayList(); 4021 dnses.add(mDefaultDns); 4022 if (DBG) { 4023 loge("no dns provided for netId " + netId + ", so using defaults"); 4024 } 4025 } 4026 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4027 try { 4028 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4029 newLp.getDomains()); 4030 } catch (Exception e) { 4031 loge("Exception in setDnsServersForNetwork: " + e); 4032 } 4033 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4034 if (defaultNai != null && defaultNai.network.netId == netId) { 4035 setDefaultDnsSystemProperties(dnses); 4036 } 4037 flushVmDnsCache(); 4038 } else if (flush) { 4039 try { 4040 mNetd.flushNetworkDnsCache(netId); 4041 } catch (Exception e) { 4042 loge("Exception in flushNetworkDnsCache: " + e); 4043 } 4044 flushVmDnsCache(); 4045 } 4046 } 4047 4048 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4049 int last = 0; 4050 for (InetAddress dns : dnses) { 4051 ++last; 4052 String key = "net.dns" + last; 4053 String value = dns.getHostAddress(); 4054 SystemProperties.set(key, value); 4055 } 4056 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4057 String key = "net.dns" + i; 4058 SystemProperties.set(key, ""); 4059 } 4060 mNumDnsEntries = last; 4061 } 4062 4063 private void updateCapabilities(NetworkAgentInfo networkAgent, 4064 NetworkCapabilities networkCapabilities) { 4065 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4066 synchronized (networkAgent) { 4067 networkAgent.networkCapabilities = networkCapabilities; 4068 } 4069 if (networkAgent.lastValidated) { 4070 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4071 // There's no need to remove the capability if we think the network is unvalidated, 4072 // because NetworkAgents don't set the validated capability. 4073 } 4074 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 4075 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4076 } 4077 } 4078 4079 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4080 for (int i = 0; i < nai.networkRequests.size(); i++) { 4081 NetworkRequest nr = nai.networkRequests.valueAt(i); 4082 // Don't send listening requests to factories. b/17393458 4083 if (!isRequest(nr)) continue; 4084 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4085 } 4086 } 4087 4088 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4089 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4090 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4091 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4092 networkRequest); 4093 } 4094 } 4095 4096 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4097 int notificationType) { 4098 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4099 Intent intent = new Intent(); 4100 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4101 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4102 nri.mPendingIntentSent = true; 4103 sendIntent(nri.mPendingIntent, intent); 4104 } 4105 // else not handled 4106 } 4107 4108 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4109 mPendingIntentWakeLock.acquire(); 4110 try { 4111 if (DBG) log("Sending " + pendingIntent); 4112 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4113 } catch (PendingIntent.CanceledException e) { 4114 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4115 mPendingIntentWakeLock.release(); 4116 releasePendingNetworkRequest(pendingIntent); 4117 } 4118 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4119 } 4120 4121 @Override 4122 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4123 String resultData, Bundle resultExtras) { 4124 if (DBG) log("Finished sending " + pendingIntent); 4125 mPendingIntentWakeLock.release(); 4126 // Release with a delay so the receiving client has an opportunity to put in its 4127 // own request. 4128 releasePendingNetworkRequestWithDelay(pendingIntent); 4129 } 4130 4131 private void callCallbackForRequest(NetworkRequestInfo nri, 4132 NetworkAgentInfo networkAgent, int notificationType) { 4133 if (nri.messenger == null) return; // Default request has no msgr 4134 Bundle bundle = new Bundle(); 4135 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4136 new NetworkRequest(nri.request)); 4137 Message msg = Message.obtain(); 4138 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4139 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4140 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4141 } 4142 switch (notificationType) { 4143 case ConnectivityManager.CALLBACK_LOSING: { 4144 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4145 break; 4146 } 4147 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4148 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4149 new NetworkCapabilities(networkAgent.networkCapabilities)); 4150 break; 4151 } 4152 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4153 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4154 new LinkProperties(networkAgent.linkProperties)); 4155 break; 4156 } 4157 } 4158 msg.what = notificationType; 4159 msg.setData(bundle); 4160 try { 4161 if (VDBG) { 4162 log("sending notification " + notifyTypeToName(notificationType) + 4163 " for " + nri.request); 4164 } 4165 nri.messenger.send(msg); 4166 } catch (RemoteException e) { 4167 // may occur naturally in the race of binder death. 4168 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4169 } 4170 } 4171 4172 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4173 for (int i = 0; i < nai.networkRequests.size(); i++) { 4174 NetworkRequest nr = nai.networkRequests.valueAt(i); 4175 // Ignore listening requests. 4176 if (!isRequest(nr)) continue; 4177 loge("Dead network still had at least " + nr); 4178 break; 4179 } 4180 nai.asyncChannel.disconnect(); 4181 } 4182 4183 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4184 if (oldNetwork == null) { 4185 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4186 return; 4187 } 4188 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4189 teardownUnneededNetwork(oldNetwork); 4190 } 4191 4192 private void makeDefault(NetworkAgentInfo newNetwork) { 4193 if (DBG) log("Switching to new default network: " + newNetwork); 4194 setupDataActivityTracking(newNetwork); 4195 try { 4196 mNetd.setDefaultNetId(newNetwork.network.netId); 4197 } catch (Exception e) { 4198 loge("Exception setting default network :" + e); 4199 } 4200 notifyLockdownVpn(newNetwork); 4201 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4202 updateTcpBufferSizes(newNetwork); 4203 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4204 } 4205 4206 // Handles a network appearing or improving its score. 4207 // 4208 // - Evaluates all current NetworkRequests that can be 4209 // satisfied by newNetwork, and reassigns to newNetwork 4210 // any such requests for which newNetwork is the best. 4211 // 4212 // - Lingers any validated Networks that as a result are no longer 4213 // needed. A network is needed if it is the best network for 4214 // one or more NetworkRequests, or if it is a VPN. 4215 // 4216 // - Tears down newNetwork if it just became validated 4217 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4218 // 4219 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4220 // networks that have no chance (i.e. even if validated) 4221 // of becoming the highest scoring network. 4222 // 4223 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4224 // it does not remove NetworkRequests that other Networks could better satisfy. 4225 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4226 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4227 // as it performs better by a factor of the number of Networks. 4228 // 4229 // @param newNetwork is the network to be matched against NetworkRequests. 4230 // @param nascent indicates if newNetwork just became validated, in which case it should be 4231 // torn down if unneeded. 4232 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4233 // performed to tear down unvalidated networks that have no chance (i.e. even if 4234 // validated) of becoming the highest scoring network. 4235 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4236 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4237 if (!newNetwork.created) return; 4238 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4239 loge("ERROR: nascent network not validated."); 4240 } 4241 boolean keep = newNetwork.isVPN(); 4242 boolean isNewDefault = false; 4243 NetworkAgentInfo oldDefaultNetwork = null; 4244 if (DBG) log("rematching " + newNetwork.name()); 4245 // Find and migrate to this Network any NetworkRequests for 4246 // which this network is now the best. 4247 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4248 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4249 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4250 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4251 if (newNetwork == currentNetwork) { 4252 if (DBG) { 4253 log("Network " + newNetwork.name() + " was already satisfying" + 4254 " request " + nri.request.requestId + ". No change."); 4255 } 4256 keep = true; 4257 continue; 4258 } 4259 4260 // check if it satisfies the NetworkCapabilities 4261 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4262 if (newNetwork.satisfies(nri.request)) { 4263 if (!nri.isRequest) { 4264 // This is not a request, it's a callback listener. 4265 // Add it to newNetwork regardless of score. 4266 newNetwork.addRequest(nri.request); 4267 continue; 4268 } 4269 4270 // next check if it's better than any current network we're using for 4271 // this request 4272 if (VDBG) { 4273 log("currentScore = " + 4274 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4275 ", newScore = " + newNetwork.getCurrentScore()); 4276 } 4277 if (currentNetwork == null || 4278 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4279 if (currentNetwork != null) { 4280 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4281 currentNetwork.networkRequests.remove(nri.request.requestId); 4282 currentNetwork.networkLingered.add(nri.request); 4283 affectedNetworks.add(currentNetwork); 4284 } else { 4285 if (DBG) log(" accepting network in place of null"); 4286 } 4287 unlinger(newNetwork); 4288 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4289 newNetwork.addRequest(nri.request); 4290 keep = true; 4291 // Tell NetworkFactories about the new score, so they can stop 4292 // trying to connect if they know they cannot match it. 4293 // TODO - this could get expensive if we have alot of requests for this 4294 // network. Think about if there is a way to reduce this. Push 4295 // netid->request mapping to each factory? 4296 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4297 if (mDefaultRequest.requestId == nri.request.requestId) { 4298 isNewDefault = true; 4299 oldDefaultNetwork = currentNetwork; 4300 } 4301 } 4302 } 4303 } 4304 // Linger any networks that are no longer needed. 4305 for (NetworkAgentInfo nai : affectedNetworks) { 4306 if (nai.everValidated && unneeded(nai)) { 4307 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4308 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4309 } else { 4310 unlinger(nai); 4311 } 4312 } 4313 if (keep) { 4314 if (isNewDefault) { 4315 // Notify system services that this network is up. 4316 makeDefault(newNetwork); 4317 synchronized (ConnectivityService.this) { 4318 // have a new default network, release the transition wakelock in 4319 // a second if it's held. The second pause is to allow apps 4320 // to reconnect over the new network 4321 if (mNetTransitionWakeLock.isHeld()) { 4322 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4323 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4324 mNetTransitionWakeLockSerialNumber, 0), 4325 1000); 4326 } 4327 } 4328 } 4329 4330 // do this after the default net is switched, but 4331 // before LegacyTypeTracker sends legacy broadcasts 4332 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4333 4334 if (isNewDefault) { 4335 // Maintain the illusion: since the legacy API only 4336 // understands one network at a time, we must pretend 4337 // that the current default network disconnected before 4338 // the new one connected. 4339 if (oldDefaultNetwork != null) { 4340 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4341 oldDefaultNetwork, true); 4342 } 4343 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4344 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4345 notifyLockdownVpn(newNetwork); 4346 } 4347 4348 // Notify battery stats service about this network, both the normal 4349 // interface and any stacked links. 4350 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4351 try { 4352 final IBatteryStats bs = BatteryStatsService.getService(); 4353 final int type = newNetwork.networkInfo.getType(); 4354 4355 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4356 bs.noteNetworkInterfaceType(baseIface, type); 4357 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4358 final String stackedIface = stacked.getInterfaceName(); 4359 bs.noteNetworkInterfaceType(stackedIface, type); 4360 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4361 } 4362 } catch (RemoteException ignored) { 4363 } 4364 4365 // This has to happen after the notifyNetworkCallbacks as that tickles each 4366 // ConnectivityManager instance so that legacy requests correctly bind dns 4367 // requests to this network. The legacy users are listening for this bcast 4368 // and will generally do a dns request so they can ensureRouteToHost and if 4369 // they do that before the callbacks happen they'll use the default network. 4370 // 4371 // TODO: Is there still a race here? We send the broadcast 4372 // after sending the callback, but if the app can receive the 4373 // broadcast before the callback, it might still break. 4374 // 4375 // This *does* introduce a race where if the user uses the new api 4376 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4377 // they may get old info. Reverse this after the old startUsing api is removed. 4378 // This is on top of the multiple intent sequencing referenced in the todo above. 4379 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4380 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4381 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4382 // legacy type tracker filters out repeat adds 4383 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4384 } 4385 } 4386 4387 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4388 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4389 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4390 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4391 if (newNetwork.isVPN()) { 4392 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4393 } 4394 } else if (nascent == NascentState.JUST_VALIDATED) { 4395 // Only tear down newly validated networks here. Leave unvalidated to either become 4396 // validated (and get evaluated against peers, one losing here), or get reaped (see 4397 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4398 // network. Networks that have been up for a while and are validated should be torn 4399 // down via the lingering process so communication on that network is given time to 4400 // wrap up. 4401 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4402 teardownUnneededNetwork(newNetwork); 4403 } 4404 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4405 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4406 if (!nai.everValidated && unneeded(nai)) { 4407 if (DBG) log("Reaping " + nai.name()); 4408 teardownUnneededNetwork(nai); 4409 } 4410 } 4411 } 4412 } 4413 4414 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4415 // being disconnected. 4416 // If only one Network's score or capabilities have been modified since the last time 4417 // this function was called, pass this Network in via the "changed" arugment, otherwise 4418 // pass null. 4419 // If only one Network has been changed but its NetworkCapabilities have not changed, 4420 // pass in the Network's score (from getCurrentScore()) prior to the change via 4421 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4422 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4423 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4424 // to avoid the slowness. It is not simply enough to process just "changed", for 4425 // example in the case where "changed"'s score decreases and another network should begin 4426 // satifying a NetworkRequest that "changed" currently satisfies. 4427 4428 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4429 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4430 // rematchNetworkAndRequests() handles. 4431 if (changed != null && oldScore < changed.getCurrentScore()) { 4432 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4433 ReapUnvalidatedNetworks.REAP); 4434 } else { 4435 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4436 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4437 NascentState.NOT_JUST_VALIDATED, 4438 // Only reap the last time through the loop. Reaping before all rematching 4439 // is complete could incorrectly teardown a network that hasn't yet been 4440 // rematched. 4441 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4442 : ReapUnvalidatedNetworks.REAP); 4443 } 4444 } 4445 } 4446 4447 private void updateInetCondition(NetworkAgentInfo nai) { 4448 // Don't bother updating until we've graduated to validated at least once. 4449 if (!nai.everValidated) return; 4450 // For now only update icons for default connection. 4451 // TODO: Update WiFi and cellular icons separately. b/17237507 4452 if (!isDefaultNetwork(nai)) return; 4453 4454 int newInetCondition = nai.lastValidated ? 100 : 0; 4455 // Don't repeat publish. 4456 if (newInetCondition == mDefaultInetConditionPublished) return; 4457 4458 mDefaultInetConditionPublished = newInetCondition; 4459 sendInetConditionBroadcast(nai.networkInfo); 4460 } 4461 4462 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4463 if (mLockdownTracker != null) { 4464 if (nai != null && nai.isVPN()) { 4465 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4466 } else { 4467 mLockdownTracker.onNetworkInfoChanged(); 4468 } 4469 } 4470 } 4471 4472 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4473 NetworkInfo.State state = newInfo.getState(); 4474 NetworkInfo oldInfo = null; 4475 synchronized (networkAgent) { 4476 oldInfo = networkAgent.networkInfo; 4477 networkAgent.networkInfo = newInfo; 4478 } 4479 notifyLockdownVpn(networkAgent); 4480 4481 if (oldInfo != null && oldInfo.getState() == state) { 4482 if (VDBG) log("ignoring duplicate network state non-change"); 4483 return; 4484 } 4485 if (DBG) { 4486 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4487 (oldInfo == null ? "null" : oldInfo.getState()) + 4488 " to " + state); 4489 } 4490 4491 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4492 try { 4493 // This should never fail. Specifying an already in use NetID will cause failure. 4494 if (networkAgent.isVPN()) { 4495 mNetd.createVirtualNetwork(networkAgent.network.netId, 4496 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4497 (networkAgent.networkMisc == null || 4498 !networkAgent.networkMisc.allowBypass)); 4499 } else { 4500 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4501 } 4502 } catch (Exception e) { 4503 loge("Error creating network " + networkAgent.network.netId + ": " 4504 + e.getMessage()); 4505 return; 4506 } 4507 networkAgent.created = true; 4508 updateLinkProperties(networkAgent, null); 4509 notifyIfacesChanged(); 4510 4511 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4512 scheduleUnvalidatedPrompt(networkAgent); 4513 4514 if (networkAgent.isVPN()) { 4515 // Temporarily disable the default proxy (not global). 4516 synchronized (mProxyLock) { 4517 if (!mDefaultProxyDisabled) { 4518 mDefaultProxyDisabled = true; 4519 if (mGlobalProxy == null && mDefaultProxy != null) { 4520 sendProxyBroadcast(null); 4521 } 4522 } 4523 } 4524 // TODO: support proxy per network. 4525 } 4526 4527 // Consider network even though it is not yet validated. 4528 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4529 ReapUnvalidatedNetworks.REAP); 4530 4531 // This has to happen after matching the requests, because callbacks are just requests. 4532 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4533 } else if (state == NetworkInfo.State.DISCONNECTED || 4534 state == NetworkInfo.State.SUSPENDED) { 4535 networkAgent.asyncChannel.disconnect(); 4536 if (networkAgent.isVPN()) { 4537 synchronized (mProxyLock) { 4538 if (mDefaultProxyDisabled) { 4539 mDefaultProxyDisabled = false; 4540 if (mGlobalProxy == null && mDefaultProxy != null) { 4541 sendProxyBroadcast(mDefaultProxy); 4542 } 4543 } 4544 } 4545 } 4546 } 4547 } 4548 4549 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4550 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4551 if (score < 0) { 4552 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4553 "). Bumping score to min of 0"); 4554 score = 0; 4555 } 4556 4557 final int oldScore = nai.getCurrentScore(); 4558 nai.setCurrentScore(score); 4559 4560 rematchAllNetworksAndRequests(nai, oldScore); 4561 4562 sendUpdatedScoreToFactories(nai); 4563 } 4564 4565 // notify only this one new request of the current state 4566 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4567 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4568 // TODO - read state from monitor to decide what to send. 4569// if (nai.networkMonitor.isLingering()) { 4570// notifyType = NetworkCallbacks.LOSING; 4571// } else if (nai.networkMonitor.isEvaluating()) { 4572// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4573// } 4574 if (nri.mPendingIntent == null) { 4575 callCallbackForRequest(nri, nai, notifyType); 4576 } else { 4577 sendPendingIntentForRequest(nri, nai, notifyType); 4578 } 4579 } 4580 4581 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4582 // The NetworkInfo we actually send out has no bearing on the real 4583 // state of affairs. For example, if the default connection is mobile, 4584 // and a request for HIPRI has just gone away, we need to pretend that 4585 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4586 // the state to DISCONNECTED, even though the network is of type MOBILE 4587 // and is still connected. 4588 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4589 info.setType(type); 4590 if (connected) { 4591 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4592 sendConnectedBroadcast(info); 4593 } else { 4594 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4595 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4596 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4597 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4598 if (info.isFailover()) { 4599 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4600 nai.networkInfo.setFailover(false); 4601 } 4602 if (info.getReason() != null) { 4603 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4604 } 4605 if (info.getExtraInfo() != null) { 4606 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4607 } 4608 NetworkAgentInfo newDefaultAgent = null; 4609 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4610 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4611 if (newDefaultAgent != null) { 4612 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4613 newDefaultAgent.networkInfo); 4614 } else { 4615 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4616 } 4617 } 4618 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4619 mDefaultInetConditionPublished); 4620 sendStickyBroadcast(intent); 4621 if (newDefaultAgent != null) { 4622 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4623 } 4624 } 4625 } 4626 4627 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4628 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4629 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4630 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4631 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4632 if (VDBG) log(" sending notification for " + nr); 4633 if (nri.mPendingIntent == null) { 4634 callCallbackForRequest(nri, networkAgent, notifyType); 4635 } else { 4636 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4637 } 4638 } 4639 } 4640 4641 private String notifyTypeToName(int notifyType) { 4642 switch (notifyType) { 4643 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4644 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4645 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4646 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4647 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4648 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4649 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4650 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4651 } 4652 return "UNKNOWN"; 4653 } 4654 4655 /** 4656 * Notify other system services that set of active ifaces has changed. 4657 */ 4658 private void notifyIfacesChanged() { 4659 try { 4660 mStatsService.forceUpdateIfaces(); 4661 } catch (Exception ignored) { 4662 } 4663 } 4664 4665 @Override 4666 public boolean addVpnAddress(String address, int prefixLength) { 4667 throwIfLockdownEnabled(); 4668 int user = UserHandle.getUserId(Binder.getCallingUid()); 4669 synchronized (mVpns) { 4670 return mVpns.get(user).addAddress(address, prefixLength); 4671 } 4672 } 4673 4674 @Override 4675 public boolean removeVpnAddress(String address, int prefixLength) { 4676 throwIfLockdownEnabled(); 4677 int user = UserHandle.getUserId(Binder.getCallingUid()); 4678 synchronized (mVpns) { 4679 return mVpns.get(user).removeAddress(address, prefixLength); 4680 } 4681 } 4682 4683 @Override 4684 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4685 throwIfLockdownEnabled(); 4686 int user = UserHandle.getUserId(Binder.getCallingUid()); 4687 boolean success; 4688 synchronized (mVpns) { 4689 success = mVpns.get(user).setUnderlyingNetworks(networks); 4690 } 4691 if (success) { 4692 notifyIfacesChanged(); 4693 } 4694 return success; 4695 } 4696 4697 @Override 4698 public void factoryReset() { 4699 enforceConnectivityInternalPermission(); 4700 4701 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4702 return; 4703 } 4704 4705 final int userId = UserHandle.getCallingUserId(); 4706 4707 // Turn airplane mode off 4708 setAirplaneMode(false); 4709 4710 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4711 // Untether 4712 for (String tether : getTetheredIfaces()) { 4713 untether(tether); 4714 } 4715 } 4716 4717 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4718 // Turn VPN off 4719 VpnConfig vpnConfig = getVpnConfig(userId); 4720 if (vpnConfig != null) { 4721 if (vpnConfig.legacy) { 4722 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4723 } else { 4724 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4725 // in the future without user intervention. 4726 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4727 4728 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4729 } 4730 } 4731 } 4732 } 4733} 4734