ConnectivityService.java revision ad5f292b037a61b9975b1b8d10a1b4202ac533cf
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_CAPTIVE_PORTAL; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 30import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 31import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.annotation.Nullable; 36import android.app.AlarmManager; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.content.BroadcastReceiver; 41import android.content.ContentResolver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.PackageManager; 46import android.content.res.Configuration; 47import android.content.res.Resources; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.IConnectivityManager; 51import android.net.INetworkManagementEventObserver; 52import android.net.INetworkPolicyListener; 53import android.net.INetworkPolicyManager; 54import android.net.INetworkStatsService; 55import android.net.LinkProperties; 56import android.net.LinkProperties.CompareResult; 57import android.net.Network; 58import android.net.NetworkAgent; 59import android.net.NetworkCapabilities; 60import android.net.NetworkConfig; 61import android.net.NetworkInfo; 62import android.net.NetworkInfo.DetailedState; 63import android.net.NetworkMisc; 64import android.net.NetworkQuotaInfo; 65import android.net.NetworkRequest; 66import android.net.NetworkState; 67import android.net.NetworkUtils; 68import android.net.Proxy; 69import android.net.ProxyInfo; 70import android.net.RouteInfo; 71import android.net.UidRange; 72import android.net.Uri; 73import android.os.Binder; 74import android.os.Bundle; 75import android.os.FileUtils; 76import android.os.Handler; 77import android.os.HandlerThread; 78import android.os.IBinder; 79import android.os.INetworkManagementService; 80import android.os.Looper; 81import android.os.Message; 82import android.os.Messenger; 83import android.os.ParcelFileDescriptor; 84import android.os.PowerManager; 85import android.os.Process; 86import android.os.RemoteException; 87import android.os.SystemClock; 88import android.os.SystemProperties; 89import android.os.UserHandle; 90import android.os.UserManager; 91import android.provider.Settings; 92import android.security.Credentials; 93import android.security.KeyStore; 94import android.telephony.TelephonyManager; 95import android.text.TextUtils; 96import android.util.Slog; 97import android.util.SparseArray; 98import android.util.SparseBooleanArray; 99import android.util.SparseIntArray; 100import android.util.Xml; 101 102import com.android.internal.R; 103import com.android.internal.annotations.GuardedBy; 104import com.android.internal.annotations.VisibleForTesting; 105import com.android.internal.app.IBatteryStats; 106import com.android.internal.net.LegacyVpnInfo; 107import com.android.internal.net.NetworkStatsFactory; 108import com.android.internal.net.VpnConfig; 109import com.android.internal.net.VpnInfo; 110import com.android.internal.net.VpnProfile; 111import com.android.internal.telephony.DctConstants; 112import com.android.internal.util.AsyncChannel; 113import com.android.internal.util.IndentingPrintWriter; 114import com.android.internal.util.XmlUtils; 115import com.android.server.am.BatteryStatsService; 116import com.android.server.connectivity.DataConnectionStats; 117import com.android.server.connectivity.NetworkDiagnostics; 118import com.android.server.connectivity.Nat464Xlat; 119import com.android.server.connectivity.NetworkAgentInfo; 120import com.android.server.connectivity.NetworkMonitor; 121import com.android.server.connectivity.PacManager; 122import com.android.server.connectivity.PermissionMonitor; 123import com.android.server.connectivity.Tethering; 124import com.android.server.connectivity.Vpn; 125import com.android.server.net.BaseNetworkObserver; 126import com.android.server.net.LockdownVpnTracker; 127import com.google.android.collect.Lists; 128import com.google.android.collect.Sets; 129 130import org.xmlpull.v1.XmlPullParser; 131import org.xmlpull.v1.XmlPullParserException; 132 133import java.io.File; 134import java.io.FileDescriptor; 135import java.io.FileNotFoundException; 136import java.io.FileReader; 137import java.io.IOException; 138import java.io.PrintWriter; 139import java.net.Inet4Address; 140import java.net.Inet6Address; 141import java.net.InetAddress; 142import java.net.UnknownHostException; 143import java.util.ArrayList; 144import java.util.Arrays; 145import java.util.Collection; 146import java.util.Collections; 147import java.util.HashMap; 148import java.util.HashSet; 149import java.util.Iterator; 150import java.util.List; 151import java.util.Map; 152import java.util.Objects; 153import java.util.concurrent.atomic.AtomicInteger; 154 155/** 156 * @hide 157 */ 158public class ConnectivityService extends IConnectivityManager.Stub 159 implements PendingIntent.OnFinished { 160 private static final String TAG = "ConnectivityService"; 161 162 private static final boolean DBG = true; 163 private static final boolean VDBG = false; 164 165 private static final boolean LOGD_RULES = false; 166 167 // TODO: create better separation between radio types and network types 168 169 // how long to wait before switching back to a radio's default network 170 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 171 // system property that can override the above value 172 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 173 "android.telephony.apn-restore"; 174 175 // How long to wait before putting up a "This network doesn't have an Internet connection, 176 // connect anyway?" dialog after the user selects a network that doesn't validate. 177 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 178 179 // How long to delay to removal of a pending intent based request. 180 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 181 private final int mReleasePendingIntentDelayMs; 182 183 private Tethering mTethering; 184 185 private final PermissionMonitor mPermissionMonitor; 186 187 private KeyStore mKeyStore; 188 189 @GuardedBy("mVpns") 190 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 191 192 private boolean mLockdownEnabled; 193 private LockdownVpnTracker mLockdownTracker; 194 195 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 196 private Object mRulesLock = new Object(); 197 /** Currently active network rules by UID. */ 198 private SparseIntArray mUidRules = new SparseIntArray(); 199 /** Set of ifaces that are costly. */ 200 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 201 202 final private Context mContext; 203 private int mNetworkPreference; 204 // 0 is full bad, 100 is full good 205 private int mDefaultInetConditionPublished = 0; 206 207 private int mNumDnsEntries; 208 209 private boolean mTestMode; 210 private static ConnectivityService sServiceInstance; 211 212 private INetworkManagementService mNetd; 213 private INetworkStatsService mStatsService; 214 private INetworkPolicyManager mPolicyManager; 215 216 private String mCurrentTcpBufferSizes; 217 218 private static final int ENABLED = 1; 219 private static final int DISABLED = 0; 220 221 // Arguments to rematchNetworkAndRequests() 222 private enum NascentState { 223 // Indicates a network was just validated for the first time. If the network is found to 224 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 225 JUST_VALIDATED, 226 // Indicates a network was not validated for the first time immediately prior to this call. 227 NOT_JUST_VALIDATED 228 }; 229 private enum ReapUnvalidatedNetworks { 230 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 231 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 232 // known that there may be unvalidated networks that could potentially be reaped, and when 233 // all networks have been rematched against all NetworkRequests. 234 REAP, 235 // Don't reap unvalidated networks. This should be passed when it's known that there are 236 // no unvalidated networks that could potentially be reaped, and when some networks have 237 // not yet been rematched against all NetworkRequests. 238 DONT_REAP 239 }; 240 241 /** 242 * used internally to change our mobile data enabled flag 243 */ 244 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 245 246 /** 247 * used internally to clear a wakelock when transitioning 248 * from one net to another. Clear happens when we get a new 249 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 250 * after a timeout if no network is found (typically 1 min). 251 */ 252 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 253 254 /** 255 * used internally to reload global proxy settings 256 */ 257 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 258 259 /** 260 * used internally to send a sticky broadcast delayed. 261 */ 262 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 263 264 /** 265 * PAC manager has received new port. 266 */ 267 private static final int EVENT_PROXY_HAS_CHANGED = 16; 268 269 /** 270 * used internally when registering NetworkFactories 271 * obj = NetworkFactoryInfo 272 */ 273 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 274 275 /** 276 * used internally when registering NetworkAgents 277 * obj = Messenger 278 */ 279 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 280 281 /** 282 * used to add a network request 283 * includes a NetworkRequestInfo 284 */ 285 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 286 287 /** 288 * indicates a timeout period is over - check if we had a network yet or not 289 * and if not, call the timeout calback (but leave the request live until they 290 * cancel it. 291 * includes a NetworkRequestInfo 292 */ 293 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 294 295 /** 296 * used to add a network listener - no request 297 * includes a NetworkRequestInfo 298 */ 299 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 300 301 /** 302 * used to remove a network request, either a listener or a real request 303 * arg1 = UID of caller 304 * obj = NetworkRequest 305 */ 306 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 307 308 /** 309 * used internally when registering NetworkFactories 310 * obj = Messenger 311 */ 312 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 313 314 /** 315 * used internally to expire a wakelock when transitioning 316 * from one net to another. Expire happens when we fail to find 317 * a new network (typically after 1 minute) - 318 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 319 * a replacement network. 320 */ 321 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 322 323 /** 324 * Used internally to indicate the system is ready. 325 */ 326 private static final int EVENT_SYSTEM_READY = 25; 327 328 /** 329 * used to add a network request with a pending intent 330 * obj = NetworkRequestInfo 331 */ 332 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 333 334 /** 335 * used to remove a pending intent and its associated network request. 336 * arg1 = UID of caller 337 * obj = PendingIntent 338 */ 339 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 340 341 /** 342 * used to specify whether a network should be used even if unvalidated. 343 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 344 * arg2 = whether to remember this choice in the future (1 or 0) 345 * obj = network 346 */ 347 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 348 349 /** 350 * used to ask the user to confirm a connection to an unvalidated network. 351 * obj = network 352 */ 353 private static final int EVENT_PROMPT_UNVALIDATED = 29; 354 355 /** 356 * used internally to (re)configure mobile data always-on settings. 357 */ 358 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 359 360 /** 361 * used to add a network listener with a pending intent 362 * obj = NetworkRequestInfo 363 */ 364 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 365 366 /** Handler used for internal events. */ 367 final private InternalHandler mHandler; 368 /** Handler used for incoming {@link NetworkStateTracker} events. */ 369 final private NetworkStateTrackerHandler mTrackerHandler; 370 371 private boolean mSystemReady; 372 private Intent mInitialBroadcast; 373 374 private PowerManager.WakeLock mNetTransitionWakeLock; 375 private String mNetTransitionWakeLockCausedBy = ""; 376 private int mNetTransitionWakeLockSerialNumber; 377 private int mNetTransitionWakeLockTimeout; 378 private final PowerManager.WakeLock mPendingIntentWakeLock; 379 380 private InetAddress mDefaultDns; 381 382 // used in DBG mode to track inet condition reports 383 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 384 private ArrayList mInetLog; 385 386 // track the current default http proxy - tell the world if we get a new one (real change) 387 private volatile ProxyInfo mDefaultProxy = null; 388 private Object mProxyLock = new Object(); 389 private boolean mDefaultProxyDisabled = false; 390 391 // track the global proxy. 392 private ProxyInfo mGlobalProxy = null; 393 394 private PacManager mPacManager = null; 395 396 final private SettingsObserver mSettingsObserver; 397 398 private UserManager mUserManager; 399 400 NetworkConfig[] mNetConfigs; 401 int mNetworksDefined; 402 403 // the set of network types that can only be enabled by system/sig apps 404 List mProtectedNetworks; 405 406 private DataConnectionStats mDataConnectionStats; 407 408 TelephonyManager mTelephonyManager; 409 410 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 411 private final static int MIN_NET_ID = 100; // some reserved marks 412 private final static int MAX_NET_ID = 65535; 413 private int mNextNetId = MIN_NET_ID; 414 415 // sequence number of NetworkRequests 416 private int mNextNetworkRequestId = 1; 417 418 /** 419 * Implements support for the legacy "one network per network type" model. 420 * 421 * We used to have a static array of NetworkStateTrackers, one for each 422 * network type, but that doesn't work any more now that we can have, 423 * for example, more that one wifi network. This class stores all the 424 * NetworkAgentInfo objects that support a given type, but the legacy 425 * API will only see the first one. 426 * 427 * It serves two main purposes: 428 * 429 * 1. Provide information about "the network for a given type" (since this 430 * API only supports one). 431 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 432 * the first network for a given type changes, or if the default network 433 * changes. 434 */ 435 private class LegacyTypeTracker { 436 437 private static final boolean DBG = true; 438 private static final boolean VDBG = false; 439 private static final String TAG = "CSLegacyTypeTracker"; 440 441 /** 442 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 443 * Each list holds references to all NetworkAgentInfos that are used to 444 * satisfy requests for that network type. 445 * 446 * This array is built out at startup such that an unsupported network 447 * doesn't get an ArrayList instance, making this a tristate: 448 * unsupported, supported but not active and active. 449 * 450 * The actual lists are populated when we scan the network types that 451 * are supported on this device. 452 */ 453 private ArrayList<NetworkAgentInfo> mTypeLists[]; 454 455 public LegacyTypeTracker() { 456 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 457 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 458 } 459 460 public void addSupportedType(int type) { 461 if (mTypeLists[type] != null) { 462 throw new IllegalStateException( 463 "legacy list for type " + type + "already initialized"); 464 } 465 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 466 } 467 468 public boolean isTypeSupported(int type) { 469 return isNetworkTypeValid(type) && mTypeLists[type] != null; 470 } 471 472 public NetworkAgentInfo getNetworkForType(int type) { 473 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 474 return mTypeLists[type].get(0); 475 } else { 476 return null; 477 } 478 } 479 480 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 481 boolean isDefaultNetwork) { 482 if (DBG) { 483 log("Sending " + (connected ? "connected" : "disconnected") + 484 " broadcast for type " + type + " " + nai.name() + 485 " isDefaultNetwork=" + isDefaultNetwork); 486 } 487 } 488 489 /** Adds the given network to the specified legacy type list. */ 490 public void add(int type, NetworkAgentInfo nai) { 491 if (!isTypeSupported(type)) { 492 return; // Invalid network type. 493 } 494 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 495 496 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 497 if (list.contains(nai)) { 498 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 499 return; 500 } 501 502 list.add(nai); 503 504 // Send a broadcast if this is the first network of its type or if it's the default. 505 final boolean isDefaultNetwork = isDefaultNetwork(nai); 506 if (list.size() == 1 || isDefaultNetwork) { 507 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 508 sendLegacyNetworkBroadcast(nai, true, type); 509 } 510 } 511 512 /** Removes the given network from the specified legacy type list. */ 513 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 514 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 515 if (list == null || list.isEmpty()) { 516 return; 517 } 518 519 final boolean wasFirstNetwork = list.get(0).equals(nai); 520 521 if (!list.remove(nai)) { 522 return; 523 } 524 525 if (wasFirstNetwork || wasDefault) { 526 maybeLogBroadcast(nai, false, type, wasDefault); 527 sendLegacyNetworkBroadcast(nai, false, type); 528 } 529 530 if (!list.isEmpty() && wasFirstNetwork) { 531 if (DBG) log("Other network available for type " + type + 532 ", sending connected broadcast"); 533 final NetworkAgentInfo replacement = list.get(0); 534 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 535 sendLegacyNetworkBroadcast(replacement, false, type); 536 } 537 } 538 539 /** Removes the given network from all legacy type lists. */ 540 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 541 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 542 for (int type = 0; type < mTypeLists.length; type++) { 543 remove(type, nai, wasDefault); 544 } 545 } 546 547 private String naiToString(NetworkAgentInfo nai) { 548 String name = (nai != null) ? nai.name() : "null"; 549 String state = (nai.networkInfo != null) ? 550 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 551 "???/???"; 552 return name + " " + state; 553 } 554 555 public void dump(IndentingPrintWriter pw) { 556 pw.println("mLegacyTypeTracker:"); 557 pw.increaseIndent(); 558 pw.print("Supported types:"); 559 for (int type = 0; type < mTypeLists.length; type++) { 560 if (mTypeLists[type] != null) pw.print(" " + type); 561 } 562 pw.println(); 563 pw.println("Current state:"); 564 pw.increaseIndent(); 565 for (int type = 0; type < mTypeLists.length; type++) { 566 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 567 for (NetworkAgentInfo nai : mTypeLists[type]) { 568 pw.println(type + " " + naiToString(nai)); 569 } 570 } 571 pw.decreaseIndent(); 572 pw.decreaseIndent(); 573 pw.println(); 574 } 575 576 // This class needs its own log method because it has a different TAG. 577 private void log(String s) { 578 Slog.d(TAG, s); 579 } 580 581 } 582 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 583 584 public ConnectivityService(Context context, INetworkManagementService netManager, 585 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 586 if (DBG) log("ConnectivityService starting up"); 587 588 mDefaultRequest = createInternetRequestForTransport(-1); 589 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 590 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 591 592 mDefaultMobileDataRequest = createInternetRequestForTransport( 593 NetworkCapabilities.TRANSPORT_CELLULAR); 594 595 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 596 handlerThread.start(); 597 mHandler = new InternalHandler(handlerThread.getLooper()); 598 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 599 600 // setup our unique device name 601 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 602 String id = Settings.Secure.getString(context.getContentResolver(), 603 Settings.Secure.ANDROID_ID); 604 if (id != null && id.length() > 0) { 605 String name = new String("android-").concat(id); 606 SystemProperties.set("net.hostname", name); 607 } 608 } 609 610 // read our default dns server ip 611 String dns = Settings.Global.getString(context.getContentResolver(), 612 Settings.Global.DEFAULT_DNS_SERVER); 613 if (dns == null || dns.length() == 0) { 614 dns = context.getResources().getString( 615 com.android.internal.R.string.config_default_dns_server); 616 } 617 try { 618 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 619 } catch (IllegalArgumentException e) { 620 loge("Error setting defaultDns using " + dns); 621 } 622 623 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 624 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 625 626 mContext = checkNotNull(context, "missing Context"); 627 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 628 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 629 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 630 mKeyStore = KeyStore.getInstance(); 631 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 632 633 try { 634 mPolicyManager.registerListener(mPolicyListener); 635 } catch (RemoteException e) { 636 // ouch, no rules updates means some processes may never get network 637 loge("unable to register INetworkPolicyListener" + e.toString()); 638 } 639 640 final PowerManager powerManager = (PowerManager) context.getSystemService( 641 Context.POWER_SERVICE); 642 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 643 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 644 com.android.internal.R.integer.config_networkTransitionTimeout); 645 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 646 647 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 648 649 // TODO: What is the "correct" way to do determine if this is a wifi only device? 650 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 651 log("wifiOnly=" + wifiOnly); 652 String[] naStrings = context.getResources().getStringArray( 653 com.android.internal.R.array.networkAttributes); 654 for (String naString : naStrings) { 655 try { 656 NetworkConfig n = new NetworkConfig(naString); 657 if (VDBG) log("naString=" + naString + " config=" + n); 658 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 659 loge("Error in networkAttributes - ignoring attempt to define type " + 660 n.type); 661 continue; 662 } 663 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 664 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 665 n.type); 666 continue; 667 } 668 if (mNetConfigs[n.type] != null) { 669 loge("Error in networkAttributes - ignoring attempt to redefine type " + 670 n.type); 671 continue; 672 } 673 mLegacyTypeTracker.addSupportedType(n.type); 674 675 mNetConfigs[n.type] = n; 676 mNetworksDefined++; 677 } catch(Exception e) { 678 // ignore it - leave the entry null 679 } 680 } 681 682 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 683 if (mNetConfigs[TYPE_VPN] == null) { 684 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 685 // don't need to add TYPE_VPN to mNetConfigs. 686 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 687 mNetworksDefined++; // used only in the log() statement below. 688 } 689 690 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 691 692 mProtectedNetworks = new ArrayList<Integer>(); 693 int[] protectedNetworks = context.getResources().getIntArray( 694 com.android.internal.R.array.config_protectedNetworks); 695 for (int p : protectedNetworks) { 696 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 697 mProtectedNetworks.add(p); 698 } else { 699 if (DBG) loge("Ignoring protectedNetwork " + p); 700 } 701 } 702 703 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 704 && SystemProperties.get("ro.build.type").equals("eng"); 705 706 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 707 708 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 709 710 //set up the listener for user state for creating user VPNs 711 IntentFilter intentFilter = new IntentFilter(); 712 intentFilter.addAction(Intent.ACTION_USER_STARTING); 713 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 714 mContext.registerReceiverAsUser( 715 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 716 717 try { 718 mNetd.registerObserver(mTethering); 719 mNetd.registerObserver(mDataActivityObserver); 720 } catch (RemoteException e) { 721 loge("Error registering observer :" + e); 722 } 723 724 if (DBG) { 725 mInetLog = new ArrayList(); 726 } 727 728 mSettingsObserver = new SettingsObserver(mContext, mHandler); 729 registerSettingsCallbacks(); 730 731 mDataConnectionStats = new DataConnectionStats(mContext); 732 mDataConnectionStats.startMonitoring(); 733 734 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 735 736 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 737 } 738 739 private NetworkRequest createInternetRequestForTransport(int transportType) { 740 NetworkCapabilities netCap = new NetworkCapabilities(); 741 netCap.addCapability(NET_CAPABILITY_INTERNET); 742 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 743 if (transportType > -1) { 744 netCap.addTransportType(transportType); 745 } 746 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 747 } 748 749 private void handleMobileDataAlwaysOn() { 750 final boolean enable = (Settings.Global.getInt( 751 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 752 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 753 if (enable == isEnabled) { 754 return; // Nothing to do. 755 } 756 757 if (enable) { 758 handleRegisterNetworkRequest(new NetworkRequestInfo( 759 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 760 } else { 761 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 762 } 763 } 764 765 private void registerSettingsCallbacks() { 766 // Watch for global HTTP proxy changes. 767 mSettingsObserver.observe( 768 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 769 EVENT_APPLY_GLOBAL_HTTP_PROXY); 770 771 // Watch for whether or not to keep mobile data always on. 772 mSettingsObserver.observe( 773 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 774 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 775 } 776 777 private synchronized int nextNetworkRequestId() { 778 return mNextNetworkRequestId++; 779 } 780 781 @VisibleForTesting 782 protected int reserveNetId() { 783 synchronized (mNetworkForNetId) { 784 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 785 int netId = mNextNetId; 786 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 787 // Make sure NetID unused. http://b/16815182 788 if (!mNetIdInUse.get(netId)) { 789 mNetIdInUse.put(netId, true); 790 return netId; 791 } 792 } 793 } 794 throw new IllegalStateException("No free netIds"); 795 } 796 797 private NetworkState getFilteredNetworkState(int networkType, int uid) { 798 NetworkInfo info = null; 799 LinkProperties lp = null; 800 NetworkCapabilities nc = null; 801 Network network = null; 802 String subscriberId = null; 803 804 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 805 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 806 if (nai != null) { 807 synchronized (nai) { 808 info = new NetworkInfo(nai.networkInfo); 809 lp = new LinkProperties(nai.linkProperties); 810 nc = new NetworkCapabilities(nai.networkCapabilities); 811 // Network objects are outwardly immutable so there is no point to duplicating. 812 // Duplicating also precludes sharing socket factories and connection pools. 813 network = nai.network; 814 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 815 } 816 info.setType(networkType); 817 } else { 818 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 819 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 820 info.setIsAvailable(true); 821 lp = new LinkProperties(); 822 nc = new NetworkCapabilities(); 823 network = null; 824 } 825 info = getFilteredNetworkInfo(info, lp, uid); 826 } 827 828 return new NetworkState(info, lp, nc, network, subscriberId, null); 829 } 830 831 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 832 if (network == null) { 833 return null; 834 } 835 synchronized (mNetworkForNetId) { 836 return mNetworkForNetId.get(network.netId); 837 } 838 }; 839 840 private Network[] getVpnUnderlyingNetworks(int uid) { 841 if (!mLockdownEnabled) { 842 int user = UserHandle.getUserId(uid); 843 synchronized (mVpns) { 844 Vpn vpn = mVpns.get(user); 845 if (vpn != null && vpn.appliesToUid(uid)) { 846 return vpn.getUnderlyingNetworks(); 847 } 848 } 849 } 850 return null; 851 } 852 853 private NetworkState getUnfilteredActiveNetworkState(int uid) { 854 NetworkInfo info = null; 855 LinkProperties lp = null; 856 NetworkCapabilities nc = null; 857 Network network = null; 858 String subscriberId = null; 859 860 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 861 862 final Network[] networks = getVpnUnderlyingNetworks(uid); 863 if (networks != null) { 864 // getUnderlyingNetworks() returns: 865 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 866 // empty array => the VPN explicitly said "no default network". 867 // non-empty array => the VPN specified one or more default networks; we use the 868 // first one. 869 if (networks.length > 0) { 870 nai = getNetworkAgentInfoForNetwork(networks[0]); 871 } else { 872 nai = null; 873 } 874 } 875 876 if (nai != null) { 877 synchronized (nai) { 878 info = new NetworkInfo(nai.networkInfo); 879 lp = new LinkProperties(nai.linkProperties); 880 nc = new NetworkCapabilities(nai.networkCapabilities); 881 // Network objects are outwardly immutable so there is no point to duplicating. 882 // Duplicating also precludes sharing socket factories and connection pools. 883 network = nai.network; 884 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 885 } 886 } 887 888 return new NetworkState(info, lp, nc, network, subscriberId, null); 889 } 890 891 /** 892 * Check if UID should be blocked from using the network with the given LinkProperties. 893 */ 894 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 895 final boolean networkCostly; 896 final int uidRules; 897 898 final String iface = (lp == null ? "" : lp.getInterfaceName()); 899 synchronized (mRulesLock) { 900 networkCostly = mMeteredIfaces.contains(iface); 901 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 902 } 903 904 if ((uidRules & RULE_REJECT_ALL) != 0 905 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 906 return true; 907 } 908 909 // no restrictive rules; network is visible 910 return false; 911 } 912 913 /** 914 * Return a filtered {@link NetworkInfo}, potentially marked 915 * {@link DetailedState#BLOCKED} based on 916 * {@link #isNetworkWithLinkPropertiesBlocked}. 917 */ 918 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 919 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 920 // network is blocked; clone and override state 921 info = new NetworkInfo(info); 922 info.setDetailedState(DetailedState.BLOCKED, null, null); 923 if (VDBG) { 924 log("returning Blocked NetworkInfo for ifname=" + 925 lp.getInterfaceName() + ", uid=" + uid); 926 } 927 } 928 if (info != null && mLockdownTracker != null) { 929 info = mLockdownTracker.augmentNetworkInfo(info); 930 if (VDBG) log("returning Locked NetworkInfo"); 931 } 932 return info; 933 } 934 935 /** 936 * Return NetworkInfo for the active (i.e., connected) network interface. 937 * It is assumed that at most one network is active at a time. If more 938 * than one is active, it is indeterminate which will be returned. 939 * @return the info for the active network, or {@code null} if none is 940 * active 941 */ 942 @Override 943 public NetworkInfo getActiveNetworkInfo() { 944 enforceAccessPermission(); 945 final int uid = Binder.getCallingUid(); 946 NetworkState state = getUnfilteredActiveNetworkState(uid); 947 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 948 } 949 950 @Override 951 public Network getActiveNetwork() { 952 enforceAccessPermission(); 953 final int uid = Binder.getCallingUid(); 954 final int user = UserHandle.getUserId(uid); 955 int vpnNetId = NETID_UNSET; 956 synchronized (mVpns) { 957 final Vpn vpn = mVpns.get(user); 958 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 959 } 960 NetworkAgentInfo nai; 961 if (vpnNetId != NETID_UNSET) { 962 synchronized (mNetworkForNetId) { 963 nai = mNetworkForNetId.get(vpnNetId); 964 } 965 if (nai != null) return nai.network; 966 } 967 nai = getDefaultNetwork(); 968 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 969 return nai != null ? nai.network : null; 970 } 971 972 public NetworkInfo getActiveNetworkInfoUnfiltered() { 973 enforceAccessPermission(); 974 final int uid = Binder.getCallingUid(); 975 NetworkState state = getUnfilteredActiveNetworkState(uid); 976 return state.networkInfo; 977 } 978 979 @Override 980 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 981 enforceConnectivityInternalPermission(); 982 NetworkState state = getUnfilteredActiveNetworkState(uid); 983 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 984 } 985 986 @Override 987 public NetworkInfo getNetworkInfo(int networkType) { 988 enforceAccessPermission(); 989 final int uid = Binder.getCallingUid(); 990 if (getVpnUnderlyingNetworks(uid) != null) { 991 // A VPN is active, so we may need to return one of its underlying networks. This 992 // information is not available in LegacyTypeTracker, so we have to get it from 993 // getUnfilteredActiveNetworkState. 994 NetworkState state = getUnfilteredActiveNetworkState(uid); 995 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 996 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 997 } 998 } 999 NetworkState state = getFilteredNetworkState(networkType, uid); 1000 return state.networkInfo; 1001 } 1002 1003 @Override 1004 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1005 enforceAccessPermission(); 1006 final int uid = Binder.getCallingUid(); 1007 NetworkInfo info = null; 1008 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1009 if (nai != null) { 1010 synchronized (nai) { 1011 info = new NetworkInfo(nai.networkInfo); 1012 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1013 } 1014 } 1015 return info; 1016 } 1017 1018 @Override 1019 public NetworkInfo[] getAllNetworkInfo() { 1020 enforceAccessPermission(); 1021 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1022 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1023 networkType++) { 1024 NetworkInfo info = getNetworkInfo(networkType); 1025 if (info != null) { 1026 result.add(info); 1027 } 1028 } 1029 return result.toArray(new NetworkInfo[result.size()]); 1030 } 1031 1032 @Override 1033 public Network getNetworkForType(int networkType) { 1034 enforceAccessPermission(); 1035 final int uid = Binder.getCallingUid(); 1036 NetworkState state = getFilteredNetworkState(networkType, uid); 1037 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1038 return state.network; 1039 } 1040 return null; 1041 } 1042 1043 @Override 1044 public Network[] getAllNetworks() { 1045 enforceAccessPermission(); 1046 synchronized (mNetworkForNetId) { 1047 final Network[] result = new Network[mNetworkForNetId.size()]; 1048 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1049 result[i] = mNetworkForNetId.valueAt(i).network; 1050 } 1051 return result; 1052 } 1053 } 1054 1055 @Override 1056 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1057 // The basic principle is: if an app's traffic could possibly go over a 1058 // network, without the app doing anything multinetwork-specific, 1059 // (hence, by "default"), then include that network's capabilities in 1060 // the array. 1061 // 1062 // In the normal case, app traffic only goes over the system's default 1063 // network connection, so that's the only network returned. 1064 // 1065 // With a VPN in force, some app traffic may go into the VPN, and thus 1066 // over whatever underlying networks the VPN specifies, while other app 1067 // traffic may go over the system default network (e.g.: a split-tunnel 1068 // VPN, or an app disallowed by the VPN), so the set of networks 1069 // returned includes the VPN's underlying networks and the system 1070 // default. 1071 enforceAccessPermission(); 1072 1073 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1074 1075 NetworkAgentInfo nai = getDefaultNetwork(); 1076 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1077 if (nc != null) { 1078 result.put(nai.network, nc); 1079 } 1080 1081 if (!mLockdownEnabled) { 1082 synchronized (mVpns) { 1083 Vpn vpn = mVpns.get(userId); 1084 if (vpn != null) { 1085 Network[] networks = vpn.getUnderlyingNetworks(); 1086 if (networks != null) { 1087 for (Network network : networks) { 1088 nai = getNetworkAgentInfoForNetwork(network); 1089 nc = getNetworkCapabilitiesInternal(nai); 1090 if (nc != null) { 1091 result.put(network, nc); 1092 } 1093 } 1094 } 1095 } 1096 } 1097 } 1098 1099 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1100 out = result.values().toArray(out); 1101 return out; 1102 } 1103 1104 @Override 1105 public boolean isNetworkSupported(int networkType) { 1106 enforceAccessPermission(); 1107 return mLegacyTypeTracker.isTypeSupported(networkType); 1108 } 1109 1110 /** 1111 * Return LinkProperties for the active (i.e., connected) default 1112 * network interface. It is assumed that at most one default network 1113 * is active at a time. If more than one is active, it is indeterminate 1114 * which will be returned. 1115 * @return the ip properties for the active network, or {@code null} if 1116 * none is active 1117 */ 1118 @Override 1119 public LinkProperties getActiveLinkProperties() { 1120 enforceAccessPermission(); 1121 final int uid = Binder.getCallingUid(); 1122 NetworkState state = getUnfilteredActiveNetworkState(uid); 1123 return state.linkProperties; 1124 } 1125 1126 @Override 1127 public LinkProperties getLinkPropertiesForType(int networkType) { 1128 enforceAccessPermission(); 1129 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1130 if (nai != null) { 1131 synchronized (nai) { 1132 return new LinkProperties(nai.linkProperties); 1133 } 1134 } 1135 return null; 1136 } 1137 1138 // TODO - this should be ALL networks 1139 @Override 1140 public LinkProperties getLinkProperties(Network network) { 1141 enforceAccessPermission(); 1142 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1143 if (nai != null) { 1144 synchronized (nai) { 1145 return new LinkProperties(nai.linkProperties); 1146 } 1147 } 1148 return null; 1149 } 1150 1151 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1152 if (nai != null) { 1153 synchronized (nai) { 1154 if (nai.networkCapabilities != null) { 1155 return new NetworkCapabilities(nai.networkCapabilities); 1156 } 1157 } 1158 } 1159 return null; 1160 } 1161 1162 @Override 1163 public NetworkCapabilities getNetworkCapabilities(Network network) { 1164 enforceAccessPermission(); 1165 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1166 } 1167 1168 @Override 1169 public NetworkState[] getAllNetworkState() { 1170 // Require internal since we're handing out IMSI details 1171 enforceConnectivityInternalPermission(); 1172 1173 final ArrayList<NetworkState> result = Lists.newArrayList(); 1174 for (Network network : getAllNetworks()) { 1175 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1176 if (nai != null) { 1177 synchronized (nai) { 1178 final String subscriberId = (nai.networkMisc != null) 1179 ? nai.networkMisc.subscriberId : null; 1180 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1181 nai.networkCapabilities, network, subscriberId, null)); 1182 } 1183 } 1184 } 1185 return result.toArray(new NetworkState[result.size()]); 1186 } 1187 1188 @Override 1189 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1190 enforceAccessPermission(); 1191 final int uid = Binder.getCallingUid(); 1192 final long token = Binder.clearCallingIdentity(); 1193 try { 1194 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1195 if (state.networkInfo != null) { 1196 try { 1197 return mPolicyManager.getNetworkQuotaInfo(state); 1198 } catch (RemoteException e) { 1199 } 1200 } 1201 return null; 1202 } finally { 1203 Binder.restoreCallingIdentity(token); 1204 } 1205 } 1206 1207 @Override 1208 public boolean isActiveNetworkMetered() { 1209 enforceAccessPermission(); 1210 final int uid = Binder.getCallingUid(); 1211 final long token = Binder.clearCallingIdentity(); 1212 try { 1213 return isActiveNetworkMeteredUnchecked(uid); 1214 } finally { 1215 Binder.restoreCallingIdentity(token); 1216 } 1217 } 1218 1219 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1220 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1221 if (state.networkInfo != null) { 1222 try { 1223 return mPolicyManager.isNetworkMetered(state); 1224 } catch (RemoteException e) { 1225 } 1226 } 1227 return false; 1228 } 1229 1230 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1231 @Override 1232 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1233 int deviceType = Integer.parseInt(label); 1234 sendDataActivityBroadcast(deviceType, active, tsNanos); 1235 } 1236 }; 1237 1238 /** 1239 * Ensure that a network route exists to deliver traffic to the specified 1240 * host via the specified network interface. 1241 * @param networkType the type of the network over which traffic to the 1242 * specified host is to be routed 1243 * @param hostAddress the IP address of the host to which the route is 1244 * desired 1245 * @return {@code true} on success, {@code false} on failure 1246 */ 1247 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1248 enforceChangePermission(); 1249 if (mProtectedNetworks.contains(networkType)) { 1250 enforceConnectivityInternalPermission(); 1251 } 1252 1253 InetAddress addr; 1254 try { 1255 addr = InetAddress.getByAddress(hostAddress); 1256 } catch (UnknownHostException e) { 1257 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1258 return false; 1259 } 1260 1261 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1262 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1263 return false; 1264 } 1265 1266 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1267 if (nai == null) { 1268 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1269 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1270 } else { 1271 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1272 } 1273 return false; 1274 } 1275 1276 DetailedState netState; 1277 synchronized (nai) { 1278 netState = nai.networkInfo.getDetailedState(); 1279 } 1280 1281 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1282 if (VDBG) { 1283 log("requestRouteToHostAddress on down network " 1284 + "(" + networkType + ") - dropped" 1285 + " netState=" + netState); 1286 } 1287 return false; 1288 } 1289 1290 final int uid = Binder.getCallingUid(); 1291 final long token = Binder.clearCallingIdentity(); 1292 try { 1293 LinkProperties lp; 1294 int netId; 1295 synchronized (nai) { 1296 lp = nai.linkProperties; 1297 netId = nai.network.netId; 1298 } 1299 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1300 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1301 return ok; 1302 } finally { 1303 Binder.restoreCallingIdentity(token); 1304 } 1305 } 1306 1307 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1308 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1309 if (bestRoute == null) { 1310 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1311 } else { 1312 String iface = bestRoute.getInterface(); 1313 if (bestRoute.getGateway().equals(addr)) { 1314 // if there is no better route, add the implied hostroute for our gateway 1315 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1316 } else { 1317 // if we will connect to this through another route, add a direct route 1318 // to it's gateway 1319 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1320 } 1321 } 1322 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1323 try { 1324 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1325 } catch (Exception e) { 1326 // never crash - catch them all 1327 if (DBG) loge("Exception trying to add a route: " + e); 1328 return false; 1329 } 1330 return true; 1331 } 1332 1333 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1334 @Override 1335 public void onUidRulesChanged(int uid, int uidRules) { 1336 // caller is NPMS, since we only register with them 1337 if (LOGD_RULES) { 1338 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1339 } 1340 1341 synchronized (mRulesLock) { 1342 // skip update when we've already applied rules 1343 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1344 if (oldRules == uidRules) return; 1345 1346 mUidRules.put(uid, uidRules); 1347 } 1348 1349 // TODO: notify UID when it has requested targeted updates 1350 } 1351 1352 @Override 1353 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1354 // caller is NPMS, since we only register with them 1355 if (LOGD_RULES) { 1356 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1357 } 1358 1359 synchronized (mRulesLock) { 1360 mMeteredIfaces.clear(); 1361 for (String iface : meteredIfaces) { 1362 mMeteredIfaces.add(iface); 1363 } 1364 } 1365 } 1366 1367 @Override 1368 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1369 // caller is NPMS, since we only register with them 1370 if (LOGD_RULES) { 1371 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1372 } 1373 } 1374 }; 1375 1376 /** 1377 * Require that the caller is either in the same user or has appropriate permission to interact 1378 * across users. 1379 * 1380 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1381 */ 1382 private void enforceCrossUserPermission(int userId) { 1383 if (userId == UserHandle.getCallingUserId()) { 1384 // Not a cross-user call. 1385 return; 1386 } 1387 mContext.enforceCallingOrSelfPermission( 1388 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1389 "ConnectivityService"); 1390 } 1391 1392 private void enforceInternetPermission() { 1393 mContext.enforceCallingOrSelfPermission( 1394 android.Manifest.permission.INTERNET, 1395 "ConnectivityService"); 1396 } 1397 1398 private void enforceAccessPermission() { 1399 mContext.enforceCallingOrSelfPermission( 1400 android.Manifest.permission.ACCESS_NETWORK_STATE, 1401 "ConnectivityService"); 1402 } 1403 1404 private void enforceChangePermission() { 1405 mContext.enforceCallingOrSelfPermission( 1406 android.Manifest.permission.CHANGE_NETWORK_STATE, 1407 "ConnectivityService"); 1408 } 1409 1410 private void enforceTetherAccessPermission() { 1411 mContext.enforceCallingOrSelfPermission( 1412 android.Manifest.permission.ACCESS_NETWORK_STATE, 1413 "ConnectivityService"); 1414 } 1415 1416 private void enforceConnectivityInternalPermission() { 1417 mContext.enforceCallingOrSelfPermission( 1418 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1419 "ConnectivityService"); 1420 } 1421 1422 public void sendConnectedBroadcast(NetworkInfo info) { 1423 enforceConnectivityInternalPermission(); 1424 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1425 } 1426 1427 private void sendInetConditionBroadcast(NetworkInfo info) { 1428 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1429 } 1430 1431 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1432 if (mLockdownTracker != null) { 1433 info = mLockdownTracker.augmentNetworkInfo(info); 1434 } 1435 1436 Intent intent = new Intent(bcastType); 1437 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1438 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1439 if (info.isFailover()) { 1440 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1441 info.setFailover(false); 1442 } 1443 if (info.getReason() != null) { 1444 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1445 } 1446 if (info.getExtraInfo() != null) { 1447 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1448 info.getExtraInfo()); 1449 } 1450 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1451 return intent; 1452 } 1453 1454 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1455 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1456 } 1457 1458 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1459 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1460 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1461 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1462 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1463 final long ident = Binder.clearCallingIdentity(); 1464 try { 1465 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1466 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1467 } finally { 1468 Binder.restoreCallingIdentity(ident); 1469 } 1470 } 1471 1472 private void sendStickyBroadcast(Intent intent) { 1473 synchronized(this) { 1474 if (!mSystemReady) { 1475 mInitialBroadcast = new Intent(intent); 1476 } 1477 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1478 if (DBG) { 1479 log("sendStickyBroadcast: action=" + intent.getAction()); 1480 } 1481 1482 final long ident = Binder.clearCallingIdentity(); 1483 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1484 final IBatteryStats bs = BatteryStatsService.getService(); 1485 try { 1486 NetworkInfo ni = intent.getParcelableExtra( 1487 ConnectivityManager.EXTRA_NETWORK_INFO); 1488 bs.noteConnectivityChanged(intent.getIntExtra( 1489 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1490 ni != null ? ni.getState().toString() : "?"); 1491 } catch (RemoteException e) { 1492 } 1493 } 1494 try { 1495 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1496 } finally { 1497 Binder.restoreCallingIdentity(ident); 1498 } 1499 } 1500 } 1501 1502 void systemReady() { 1503 loadGlobalProxy(); 1504 1505 synchronized(this) { 1506 mSystemReady = true; 1507 if (mInitialBroadcast != null) { 1508 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1509 mInitialBroadcast = null; 1510 } 1511 } 1512 // load the global proxy at startup 1513 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1514 1515 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1516 // for user to unlock device. 1517 if (!updateLockdownVpn()) { 1518 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1519 mContext.registerReceiver(mUserPresentReceiver, filter); 1520 } 1521 1522 // Configure whether mobile data is always on. 1523 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1524 1525 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1526 1527 mPermissionMonitor.startMonitoring(); 1528 } 1529 1530 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1531 @Override 1532 public void onReceive(Context context, Intent intent) { 1533 // Try creating lockdown tracker, since user present usually means 1534 // unlocked keystore. 1535 if (updateLockdownVpn()) { 1536 mContext.unregisterReceiver(this); 1537 } 1538 } 1539 }; 1540 1541 /** 1542 * Setup data activity tracking for the given network. 1543 * 1544 * Every {@code setupDataActivityTracking} should be paired with a 1545 * {@link #removeDataActivityTracking} for cleanup. 1546 */ 1547 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1548 final String iface = networkAgent.linkProperties.getInterfaceName(); 1549 1550 final int timeout; 1551 int type = ConnectivityManager.TYPE_NONE; 1552 1553 if (networkAgent.networkCapabilities.hasTransport( 1554 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1555 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1556 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1557 5); 1558 type = ConnectivityManager.TYPE_MOBILE; 1559 } else if (networkAgent.networkCapabilities.hasTransport( 1560 NetworkCapabilities.TRANSPORT_WIFI)) { 1561 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1562 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1563 15); 1564 type = ConnectivityManager.TYPE_WIFI; 1565 } else { 1566 // do not track any other networks 1567 timeout = 0; 1568 } 1569 1570 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1571 try { 1572 mNetd.addIdleTimer(iface, timeout, type); 1573 } catch (Exception e) { 1574 // You shall not crash! 1575 loge("Exception in setupDataActivityTracking " + e); 1576 } 1577 } 1578 } 1579 1580 /** 1581 * Remove data activity tracking when network disconnects. 1582 */ 1583 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1584 final String iface = networkAgent.linkProperties.getInterfaceName(); 1585 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1586 1587 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1588 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1589 try { 1590 // the call fails silently if no idletimer setup for this interface 1591 mNetd.removeIdleTimer(iface); 1592 } catch (Exception e) { 1593 loge("Exception in removeDataActivityTracking " + e); 1594 } 1595 } 1596 } 1597 1598 /** 1599 * Reads the network specific MTU size from reources. 1600 * and set it on it's iface. 1601 */ 1602 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1603 final String iface = newLp.getInterfaceName(); 1604 final int mtu = newLp.getMtu(); 1605 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1606 if (VDBG) log("identical MTU - not setting"); 1607 return; 1608 } 1609 1610 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1611 loge("Unexpected mtu value: " + mtu + ", " + iface); 1612 return; 1613 } 1614 1615 // Cannot set MTU without interface name 1616 if (TextUtils.isEmpty(iface)) { 1617 loge("Setting MTU size with null iface."); 1618 return; 1619 } 1620 1621 try { 1622 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1623 mNetd.setMtu(iface, mtu); 1624 } catch (Exception e) { 1625 Slog.e(TAG, "exception in setMtu()" + e); 1626 } 1627 } 1628 1629 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1630 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1631 1632 // Overridden for testing purposes to avoid writing to SystemProperties. 1633 @VisibleForTesting 1634 protected int getDefaultTcpRwnd() { 1635 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1636 } 1637 1638 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1639 if (isDefaultNetwork(nai) == false) { 1640 return; 1641 } 1642 1643 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1644 String[] values = null; 1645 if (tcpBufferSizes != null) { 1646 values = tcpBufferSizes.split(","); 1647 } 1648 1649 if (values == null || values.length != 6) { 1650 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1651 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1652 values = tcpBufferSizes.split(","); 1653 } 1654 1655 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1656 1657 try { 1658 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1659 1660 final String prefix = "/sys/kernel/ipv4/tcp_"; 1661 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1662 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1663 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1664 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1665 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1666 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1667 mCurrentTcpBufferSizes = tcpBufferSizes; 1668 } catch (IOException e) { 1669 loge("Can't set TCP buffer sizes:" + e); 1670 } 1671 1672 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1673 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1674 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1675 if (rwndValue != 0) { 1676 SystemProperties.set(sysctlKey, rwndValue.toString()); 1677 } 1678 } 1679 1680 private void flushVmDnsCache() { 1681 /* 1682 * Tell the VMs to toss their DNS caches 1683 */ 1684 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1685 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1686 /* 1687 * Connectivity events can happen before boot has completed ... 1688 */ 1689 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1690 final long ident = Binder.clearCallingIdentity(); 1691 try { 1692 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1693 } finally { 1694 Binder.restoreCallingIdentity(ident); 1695 } 1696 } 1697 1698 @Override 1699 public int getRestoreDefaultNetworkDelay(int networkType) { 1700 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1701 NETWORK_RESTORE_DELAY_PROP_NAME); 1702 if(restoreDefaultNetworkDelayStr != null && 1703 restoreDefaultNetworkDelayStr.length() != 0) { 1704 try { 1705 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1706 } catch (NumberFormatException e) { 1707 } 1708 } 1709 // if the system property isn't set, use the value for the apn type 1710 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1711 1712 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1713 (mNetConfigs[networkType] != null)) { 1714 ret = mNetConfigs[networkType].restoreTime; 1715 } 1716 return ret; 1717 } 1718 1719 private boolean shouldPerformDiagnostics(String[] args) { 1720 for (String arg : args) { 1721 if (arg.equals("--diag")) { 1722 return true; 1723 } 1724 } 1725 return false; 1726 } 1727 1728 @Override 1729 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1730 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1731 if (mContext.checkCallingOrSelfPermission( 1732 android.Manifest.permission.DUMP) 1733 != PackageManager.PERMISSION_GRANTED) { 1734 pw.println("Permission Denial: can't dump ConnectivityService " + 1735 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1736 Binder.getCallingUid()); 1737 return; 1738 } 1739 1740 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1741 if (shouldPerformDiagnostics(args)) { 1742 final long DIAG_TIME_MS = 5000; 1743 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1744 // Start gathering diagnostic information. 1745 netDiags.add(new NetworkDiagnostics( 1746 nai.network, 1747 new LinkProperties(nai.linkProperties), 1748 DIAG_TIME_MS)); 1749 } 1750 1751 for (NetworkDiagnostics netDiag : netDiags) { 1752 pw.println(); 1753 netDiag.waitForMeasurements(); 1754 netDiag.dump(pw); 1755 } 1756 1757 return; 1758 } 1759 1760 pw.print("NetworkFactories for:"); 1761 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1762 pw.print(" " + nfi.name); 1763 } 1764 pw.println(); 1765 pw.println(); 1766 1767 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1768 pw.print("Active default network: "); 1769 if (defaultNai == null) { 1770 pw.println("none"); 1771 } else { 1772 pw.println(defaultNai.network.netId); 1773 } 1774 pw.println(); 1775 1776 pw.println("Current Networks:"); 1777 pw.increaseIndent(); 1778 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1779 pw.println(nai.toString()); 1780 pw.increaseIndent(); 1781 pw.println("Requests:"); 1782 pw.increaseIndent(); 1783 for (int i = 0; i < nai.networkRequests.size(); i++) { 1784 pw.println(nai.networkRequests.valueAt(i).toString()); 1785 } 1786 pw.decreaseIndent(); 1787 pw.println("Lingered:"); 1788 pw.increaseIndent(); 1789 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1790 pw.decreaseIndent(); 1791 pw.decreaseIndent(); 1792 } 1793 pw.decreaseIndent(); 1794 pw.println(); 1795 1796 pw.println("Network Requests:"); 1797 pw.increaseIndent(); 1798 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1799 pw.println(nri.toString()); 1800 } 1801 pw.println(); 1802 pw.decreaseIndent(); 1803 1804 mLegacyTypeTracker.dump(pw); 1805 1806 synchronized (this) { 1807 pw.print("mNetTransitionWakeLock: currently " + 1808 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1809 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1810 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1811 } else { 1812 pw.println(", last requested never"); 1813 } 1814 } 1815 pw.println(); 1816 1817 mTethering.dump(fd, pw, args); 1818 1819 if (mInetLog != null && mInetLog.size() > 0) { 1820 pw.println(); 1821 pw.println("Inet condition reports:"); 1822 pw.increaseIndent(); 1823 for(int i = 0; i < mInetLog.size(); i++) { 1824 pw.println(mInetLog.get(i)); 1825 } 1826 pw.decreaseIndent(); 1827 } 1828 } 1829 1830 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1831 if (nai.network == null) return false; 1832 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1833 if (officialNai != null && officialNai.equals(nai)) return true; 1834 if (officialNai != null || VDBG) { 1835 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1836 " - " + nai); 1837 } 1838 return false; 1839 } 1840 1841 private boolean isRequest(NetworkRequest request) { 1842 return mNetworkRequests.get(request).isRequest; 1843 } 1844 1845 // must be stateless - things change under us. 1846 private class NetworkStateTrackerHandler extends Handler { 1847 public NetworkStateTrackerHandler(Looper looper) { 1848 super(looper); 1849 } 1850 1851 @Override 1852 public void handleMessage(Message msg) { 1853 NetworkInfo info; 1854 switch (msg.what) { 1855 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1856 handleAsyncChannelHalfConnect(msg); 1857 break; 1858 } 1859 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1860 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1861 if (nai != null) nai.asyncChannel.disconnect(); 1862 break; 1863 } 1864 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1865 handleAsyncChannelDisconnected(msg); 1866 break; 1867 } 1868 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1869 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1870 if (nai == null) { 1871 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1872 } else { 1873 final NetworkCapabilities networkCapabilities = 1874 (NetworkCapabilities)msg.obj; 1875 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1876 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1877 Slog.wtf(TAG, "BUG: " + nai + " has stateful capability."); 1878 } 1879 updateCapabilities(nai, networkCapabilities, 1880 NascentState.NOT_JUST_VALIDATED); 1881 } 1882 break; 1883 } 1884 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1885 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1886 if (nai == null) { 1887 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1888 } else { 1889 if (VDBG) { 1890 log("Update of LinkProperties for " + nai.name() + 1891 "; created=" + nai.created); 1892 } 1893 LinkProperties oldLp = nai.linkProperties; 1894 synchronized (nai) { 1895 nai.linkProperties = (LinkProperties)msg.obj; 1896 } 1897 if (nai.created) updateLinkProperties(nai, oldLp); 1898 } 1899 break; 1900 } 1901 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1902 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1903 if (nai == null) { 1904 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1905 break; 1906 } 1907 info = (NetworkInfo) msg.obj; 1908 updateNetworkInfo(nai, info); 1909 break; 1910 } 1911 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1912 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1913 if (nai == null) { 1914 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1915 break; 1916 } 1917 Integer score = (Integer) msg.obj; 1918 if (score != null) updateNetworkScore(nai, score.intValue()); 1919 break; 1920 } 1921 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1922 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1923 if (nai == null) { 1924 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1925 break; 1926 } 1927 try { 1928 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1929 } catch (Exception e) { 1930 // Never crash! 1931 loge("Exception in addVpnUidRanges: " + e); 1932 } 1933 break; 1934 } 1935 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1936 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1937 if (nai == null) { 1938 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1939 break; 1940 } 1941 try { 1942 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1943 } catch (Exception e) { 1944 // Never crash! 1945 loge("Exception in removeVpnUidRanges: " + e); 1946 } 1947 break; 1948 } 1949 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1950 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1951 if (nai == null) { 1952 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1953 break; 1954 } 1955 if (nai.created && !nai.networkMisc.explicitlySelected) { 1956 loge("ERROR: created network explicitly selected."); 1957 } 1958 nai.networkMisc.explicitlySelected = true; 1959 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1960 break; 1961 } 1962 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1963 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1964 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1965 final boolean valid = 1966 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1967 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 1968 if (valid != nai.lastValidated) { 1969 final int oldScore = nai.getCurrentScore(); 1970 final NascentState nascent = (valid && !nai.everValidated) ? 1971 NascentState.JUST_VALIDATED : NascentState.NOT_JUST_VALIDATED; 1972 nai.lastValidated = valid; 1973 nai.everValidated |= valid; 1974 updateCapabilities(nai, nai.networkCapabilities, nascent); 1975 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1976 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 1977 } 1978 updateInetCondition(nai); 1979 // Let the NetworkAgent know the state of its network 1980 nai.asyncChannel.sendMessage( 1981 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1982 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1983 0, null); 1984 } 1985 break; 1986 } 1987 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1988 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1989 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1990 handleLingerComplete(nai); 1991 } 1992 break; 1993 } 1994 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1995 final int netId = msg.arg2; 1996 final boolean visible = (msg.arg1 != 0); 1997 final NetworkAgentInfo nai; 1998 synchronized (mNetworkForNetId) { 1999 nai = mNetworkForNetId.get(netId); 2000 } 2001 // If captive portal status has changed, update capabilities. 2002 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2003 nai.lastCaptivePortalDetected = visible; 2004 nai.everCaptivePortalDetected |= visible; 2005 updateCapabilities(nai, nai.networkCapabilities, 2006 NascentState.NOT_JUST_VALIDATED); 2007 } 2008 if (!visible) { 2009 setProvNotificationVisibleIntent(false, netId, null, 0, null, null); 2010 } else { 2011 if (nai == null) { 2012 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2013 break; 2014 } 2015 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2016 nai.networkInfo.getType(),nai.networkInfo.getExtraInfo(), 2017 (PendingIntent)msg.obj); 2018 } 2019 break; 2020 } 2021 } 2022 } 2023 } 2024 2025 // Cancel any lingering so the linger timeout doesn't teardown a network. 2026 // This should be called when a network begins satisfying a NetworkRequest. 2027 // Note: depending on what state the NetworkMonitor is in (e.g., 2028 // if it's awaiting captive portal login, or if validation failed), this 2029 // may trigger a re-evaluation of the network. 2030 private void unlinger(NetworkAgentInfo nai) { 2031 if (VDBG) log("Canceling linger of " + nai.name()); 2032 // If network has never been validated, it cannot have been lingered, so don't bother 2033 // needlessly triggering a re-evaluation. 2034 if (!nai.everValidated) return; 2035 nai.networkLingered.clear(); 2036 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2037 } 2038 2039 private void handleAsyncChannelHalfConnect(Message msg) { 2040 AsyncChannel ac = (AsyncChannel) msg.obj; 2041 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2042 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2043 if (VDBG) log("NetworkFactory connected"); 2044 // A network factory has connected. Send it all current NetworkRequests. 2045 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2046 if (nri.isRequest == false) continue; 2047 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2048 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2049 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2050 } 2051 } else { 2052 loge("Error connecting NetworkFactory"); 2053 mNetworkFactoryInfos.remove(msg.obj); 2054 } 2055 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2056 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2057 if (VDBG) log("NetworkAgent connected"); 2058 // A network agent has requested a connection. Establish the connection. 2059 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2060 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2061 } else { 2062 loge("Error connecting NetworkAgent"); 2063 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2064 if (nai != null) { 2065 final boolean wasDefault = isDefaultNetwork(nai); 2066 synchronized (mNetworkForNetId) { 2067 mNetworkForNetId.remove(nai.network.netId); 2068 mNetIdInUse.delete(nai.network.netId); 2069 } 2070 // Just in case. 2071 mLegacyTypeTracker.remove(nai, wasDefault); 2072 } 2073 } 2074 } 2075 } 2076 2077 private void handleAsyncChannelDisconnected(Message msg) { 2078 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2079 if (nai != null) { 2080 if (DBG) { 2081 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2082 } 2083 // A network agent has disconnected. 2084 // TODO - if we move the logic to the network agent (have them disconnect 2085 // because they lost all their requests or because their score isn't good) 2086 // then they would disconnect organically, report their new state and then 2087 // disconnect the channel. 2088 if (nai.networkInfo.isConnected()) { 2089 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2090 null, null); 2091 } 2092 final boolean wasDefault = isDefaultNetwork(nai); 2093 if (wasDefault) { 2094 mDefaultInetConditionPublished = 0; 2095 } 2096 notifyIfacesChanged(); 2097 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2098 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2099 mNetworkAgentInfos.remove(msg.replyTo); 2100 updateClat(null, nai.linkProperties, nai); 2101 synchronized (mNetworkForNetId) { 2102 // Remove the NetworkAgent, but don't mark the netId as 2103 // available until we've told netd to delete it below. 2104 mNetworkForNetId.remove(nai.network.netId); 2105 } 2106 // Since we've lost the network, go through all the requests that 2107 // it was satisfying and see if any other factory can satisfy them. 2108 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2109 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2110 for (int i = 0; i < nai.networkRequests.size(); i++) { 2111 NetworkRequest request = nai.networkRequests.valueAt(i); 2112 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2113 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2114 if (DBG) { 2115 log("Checking for replacement network to handle request " + request ); 2116 } 2117 mNetworkForRequestId.remove(request.requestId); 2118 sendUpdatedScoreToFactories(request, 0); 2119 NetworkAgentInfo alternative = null; 2120 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2121 if (existing.satisfies(request) && 2122 (alternative == null || 2123 alternative.getCurrentScore() < existing.getCurrentScore())) { 2124 alternative = existing; 2125 } 2126 } 2127 if (alternative != null) { 2128 if (DBG) log(" found replacement in " + alternative.name()); 2129 if (!toActivate.contains(alternative)) { 2130 toActivate.add(alternative); 2131 } 2132 } 2133 } 2134 } 2135 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2136 removeDataActivityTracking(nai); 2137 notifyLockdownVpn(nai); 2138 requestNetworkTransitionWakelock(nai.name()); 2139 } 2140 mLegacyTypeTracker.remove(nai, wasDefault); 2141 for (NetworkAgentInfo networkToActivate : toActivate) { 2142 unlinger(networkToActivate); 2143 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2144 ReapUnvalidatedNetworks.DONT_REAP); 2145 } 2146 if (nai.created) { 2147 // Tell netd to clean up the configuration for this network 2148 // (routing rules, DNS, etc). 2149 // This may be slow as it requires a lot of netd shelling out to ip and 2150 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2151 // after we've rematched networks with requests which should make a potential 2152 // fallback network the default or requested a new network from the 2153 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2154 // long time. 2155 try { 2156 mNetd.removeNetwork(nai.network.netId); 2157 } catch (Exception e) { 2158 loge("Exception removing network: " + e); 2159 } 2160 } 2161 synchronized (mNetworkForNetId) { 2162 mNetIdInUse.delete(nai.network.netId); 2163 } 2164 } else { 2165 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2166 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2167 } 2168 } 2169 2170 // If this method proves to be too slow then we can maintain a separate 2171 // pendingIntent => NetworkRequestInfo map. 2172 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2173 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2174 Intent intent = pendingIntent.getIntent(); 2175 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2176 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2177 if (existingPendingIntent != null && 2178 existingPendingIntent.getIntent().filterEquals(intent)) { 2179 return entry.getValue(); 2180 } 2181 } 2182 return null; 2183 } 2184 2185 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2186 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2187 2188 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2189 if (existingRequest != null) { // remove the existing request. 2190 if (DBG) log("Replacing " + existingRequest.request + " with " 2191 + nri.request + " because their intents matched."); 2192 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2193 } 2194 handleRegisterNetworkRequest(nri); 2195 } 2196 2197 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2198 mNetworkRequests.put(nri.request, nri); 2199 2200 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2201 2202 // Check for the best currently alive network that satisfies this request 2203 NetworkAgentInfo bestNetwork = null; 2204 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2205 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2206 if (network.satisfies(nri.request)) { 2207 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2208 if (!nri.isRequest) { 2209 // Not setting bestNetwork here as a listening NetworkRequest may be 2210 // satisfied by multiple Networks. Instead the request is added to 2211 // each satisfying Network and notified about each. 2212 if (!network.addRequest(nri.request)) { 2213 Slog.wtf(TAG, "BUG: " + network.name() + " already has " + nri.request); 2214 } 2215 notifyNetworkCallback(network, nri); 2216 } else if (bestNetwork == null || 2217 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2218 bestNetwork = network; 2219 } 2220 } 2221 } 2222 if (bestNetwork != null) { 2223 if (DBG) log("using " + bestNetwork.name()); 2224 unlinger(bestNetwork); 2225 if (!bestNetwork.addRequest(nri.request)) { 2226 Slog.wtf(TAG, "BUG: " + bestNetwork.name() + " already has " + nri.request); 2227 } 2228 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2229 notifyNetworkCallback(bestNetwork, nri); 2230 if (nri.request.legacyType != TYPE_NONE) { 2231 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2232 } 2233 } 2234 2235 if (nri.isRequest) { 2236 if (DBG) log("sending new NetworkRequest to factories"); 2237 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2238 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2239 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2240 0, nri.request); 2241 } 2242 } 2243 } 2244 2245 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2246 int callingUid) { 2247 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2248 if (nri != null) { 2249 handleReleaseNetworkRequest(nri.request, callingUid); 2250 } 2251 } 2252 2253 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2254 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2255 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2256 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2257 private boolean unneeded(NetworkAgentInfo nai) { 2258 if (!nai.created || nai.isVPN()) return false; 2259 boolean unneeded = true; 2260 if (nai.everValidated) { 2261 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2262 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2263 try { 2264 if (isRequest(nr)) unneeded = false; 2265 } catch (Exception e) { 2266 loge("Request " + nr + " not found in mNetworkRequests."); 2267 loge(" it came from request list of " + nai.name()); 2268 } 2269 } 2270 } else { 2271 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2272 // If this Network is already the highest scoring Network for a request, or if 2273 // there is hope for it to become one if it validated, then it is needed. 2274 if (nri.isRequest && nai.satisfies(nri.request) && 2275 (nai.networkRequests.get(nri.request.requestId) != null || 2276 // Note that this catches two important cases: 2277 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2278 // is currently satisfying the request. This is desirable when 2279 // cellular ends up validating but WiFi does not. 2280 // 2. Unvalidated WiFi will not be reaped when validated cellular 2281 // is currently satsifying the request. This is desirable when 2282 // WiFi ends up validating and out scoring cellular. 2283 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2284 nai.getCurrentScoreAsValidated())) { 2285 unneeded = false; 2286 break; 2287 } 2288 } 2289 } 2290 return unneeded; 2291 } 2292 2293 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2294 NetworkRequestInfo nri = mNetworkRequests.get(request); 2295 if (nri != null) { 2296 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2297 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2298 return; 2299 } 2300 if (DBG) log("releasing NetworkRequest " + request); 2301 nri.unlinkDeathRecipient(); 2302 mNetworkRequests.remove(request); 2303 if (nri.isRequest) { 2304 // Find all networks that are satisfying this request and remove the request 2305 // from their request lists. 2306 // TODO - it's my understanding that for a request there is only a single 2307 // network satisfying it, so this loop is wasteful 2308 boolean wasKept = false; 2309 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2310 if (nai.networkRequests.get(nri.request.requestId) != null) { 2311 nai.networkRequests.remove(nri.request.requestId); 2312 if (DBG) { 2313 log(" Removing from current network " + nai.name() + 2314 ", leaving " + nai.networkRequests.size() + 2315 " requests."); 2316 } 2317 if (unneeded(nai)) { 2318 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2319 teardownUnneededNetwork(nai); 2320 } else { 2321 // suspect there should only be one pass through here 2322 // but if any were kept do the check below 2323 wasKept |= true; 2324 } 2325 } 2326 } 2327 2328 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2329 if (nai != null) { 2330 mNetworkForRequestId.remove(nri.request.requestId); 2331 } 2332 // Maintain the illusion. When this request arrived, we might have pretended 2333 // that a network connected to serve it, even though the network was already 2334 // connected. Now that this request has gone away, we might have to pretend 2335 // that the network disconnected. LegacyTypeTracker will generate that 2336 // phantom disconnect for this type. 2337 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2338 boolean doRemove = true; 2339 if (wasKept) { 2340 // check if any of the remaining requests for this network are for the 2341 // same legacy type - if so, don't remove the nai 2342 for (int i = 0; i < nai.networkRequests.size(); i++) { 2343 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2344 if (otherRequest.legacyType == nri.request.legacyType && 2345 isRequest(otherRequest)) { 2346 if (DBG) log(" still have other legacy request - leaving"); 2347 doRemove = false; 2348 } 2349 } 2350 } 2351 2352 if (doRemove) { 2353 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2354 } 2355 } 2356 2357 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2358 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2359 nri.request); 2360 } 2361 } else { 2362 // listens don't have a singular affectedNetwork. Check all networks to see 2363 // if this listen request applies and remove it. 2364 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2365 nai.networkRequests.remove(nri.request.requestId); 2366 } 2367 } 2368 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2369 } 2370 } 2371 2372 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2373 enforceConnectivityInternalPermission(); 2374 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2375 accept ? 1 : 0, always ? 1: 0, network)); 2376 } 2377 2378 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2379 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2380 " accept=" + accept + " always=" + always); 2381 2382 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2383 if (nai == null) { 2384 // Nothing to do. 2385 return; 2386 } 2387 2388 if (nai.everValidated) { 2389 // The network validated while the dialog box was up. Take no action. 2390 return; 2391 } 2392 2393 if (!nai.networkMisc.explicitlySelected) { 2394 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2395 } 2396 2397 if (accept != nai.networkMisc.acceptUnvalidated) { 2398 int oldScore = nai.getCurrentScore(); 2399 nai.networkMisc.acceptUnvalidated = accept; 2400 rematchAllNetworksAndRequests(nai, oldScore, NascentState.NOT_JUST_VALIDATED); 2401 sendUpdatedScoreToFactories(nai); 2402 } 2403 2404 if (always) { 2405 nai.asyncChannel.sendMessage( 2406 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2407 } 2408 2409 if (!accept) { 2410 // Tell the NetworkAgent that the network does not have Internet access (because that's 2411 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2412 // the future. We do this now because NetworkMonitor might not yet have finished 2413 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2414 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2415 NetworkAgent.INVALID_NETWORK, 0, null); 2416 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2417 // to reconnect to it immediately. http://b/20739299 2418 } 2419 2420 } 2421 2422 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2423 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2424 mHandler.sendMessageDelayed( 2425 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2426 PROMPT_UNVALIDATED_DELAY_MS); 2427 } 2428 2429 private void handlePromptUnvalidated(Network network) { 2430 if (DBG) log("handlePromptUnvalidated " + network); 2431 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2432 2433 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2434 // we haven't already been told to switch to it regardless of whether it validated or not. 2435 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2436 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2437 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2438 return; 2439 } 2440 2441 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2442 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2443 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2444 intent.setClassName("com.android.settings", 2445 "com.android.settings.wifi.WifiNoInternetDialog"); 2446 2447 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2448 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2449 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2450 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent); 2451 } 2452 2453 private class InternalHandler extends Handler { 2454 public InternalHandler(Looper looper) { 2455 super(looper); 2456 } 2457 2458 @Override 2459 public void handleMessage(Message msg) { 2460 switch (msg.what) { 2461 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2462 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2463 String causedBy = null; 2464 synchronized (ConnectivityService.this) { 2465 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2466 mNetTransitionWakeLock.isHeld()) { 2467 mNetTransitionWakeLock.release(); 2468 causedBy = mNetTransitionWakeLockCausedBy; 2469 } else { 2470 break; 2471 } 2472 } 2473 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2474 log("Failed to find a new network - expiring NetTransition Wakelock"); 2475 } else { 2476 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2477 " cleared because we found a replacement network"); 2478 } 2479 break; 2480 } 2481 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2482 handleDeprecatedGlobalHttpProxy(); 2483 break; 2484 } 2485 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2486 Intent intent = (Intent)msg.obj; 2487 sendStickyBroadcast(intent); 2488 break; 2489 } 2490 case EVENT_PROXY_HAS_CHANGED: { 2491 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2492 break; 2493 } 2494 case EVENT_REGISTER_NETWORK_FACTORY: { 2495 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2496 break; 2497 } 2498 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2499 handleUnregisterNetworkFactory((Messenger)msg.obj); 2500 break; 2501 } 2502 case EVENT_REGISTER_NETWORK_AGENT: { 2503 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2504 break; 2505 } 2506 case EVENT_REGISTER_NETWORK_REQUEST: 2507 case EVENT_REGISTER_NETWORK_LISTENER: { 2508 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2509 break; 2510 } 2511 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2512 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2513 handleRegisterNetworkRequestWithIntent(msg); 2514 break; 2515 } 2516 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2517 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2518 break; 2519 } 2520 case EVENT_RELEASE_NETWORK_REQUEST: { 2521 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2522 break; 2523 } 2524 case EVENT_SET_ACCEPT_UNVALIDATED: { 2525 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2526 break; 2527 } 2528 case EVENT_PROMPT_UNVALIDATED: { 2529 handlePromptUnvalidated((Network) msg.obj); 2530 break; 2531 } 2532 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2533 handleMobileDataAlwaysOn(); 2534 break; 2535 } 2536 case EVENT_SYSTEM_READY: { 2537 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2538 nai.networkMonitor.systemReady = true; 2539 } 2540 break; 2541 } 2542 } 2543 } 2544 } 2545 2546 // javadoc from interface 2547 public int tether(String iface) { 2548 ConnectivityManager.enforceTetherChangePermission(mContext); 2549 if (isTetheringSupported()) { 2550 return mTethering.tether(iface); 2551 } else { 2552 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2553 } 2554 } 2555 2556 // javadoc from interface 2557 public int untether(String iface) { 2558 ConnectivityManager.enforceTetherChangePermission(mContext); 2559 2560 if (isTetheringSupported()) { 2561 return mTethering.untether(iface); 2562 } else { 2563 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2564 } 2565 } 2566 2567 // javadoc from interface 2568 public int getLastTetherError(String iface) { 2569 enforceTetherAccessPermission(); 2570 2571 if (isTetheringSupported()) { 2572 return mTethering.getLastTetherError(iface); 2573 } else { 2574 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2575 } 2576 } 2577 2578 // TODO - proper iface API for selection by property, inspection, etc 2579 public String[] getTetherableUsbRegexs() { 2580 enforceTetherAccessPermission(); 2581 if (isTetheringSupported()) { 2582 return mTethering.getTetherableUsbRegexs(); 2583 } else { 2584 return new String[0]; 2585 } 2586 } 2587 2588 public String[] getTetherableWifiRegexs() { 2589 enforceTetherAccessPermission(); 2590 if (isTetheringSupported()) { 2591 return mTethering.getTetherableWifiRegexs(); 2592 } else { 2593 return new String[0]; 2594 } 2595 } 2596 2597 public String[] getTetherableBluetoothRegexs() { 2598 enforceTetherAccessPermission(); 2599 if (isTetheringSupported()) { 2600 return mTethering.getTetherableBluetoothRegexs(); 2601 } else { 2602 return new String[0]; 2603 } 2604 } 2605 2606 public int setUsbTethering(boolean enable) { 2607 ConnectivityManager.enforceTetherChangePermission(mContext); 2608 if (isTetheringSupported()) { 2609 return mTethering.setUsbTethering(enable); 2610 } else { 2611 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2612 } 2613 } 2614 2615 // TODO - move iface listing, queries, etc to new module 2616 // javadoc from interface 2617 public String[] getTetherableIfaces() { 2618 enforceTetherAccessPermission(); 2619 return mTethering.getTetherableIfaces(); 2620 } 2621 2622 public String[] getTetheredIfaces() { 2623 enforceTetherAccessPermission(); 2624 return mTethering.getTetheredIfaces(); 2625 } 2626 2627 public String[] getTetheringErroredIfaces() { 2628 enforceTetherAccessPermission(); 2629 return mTethering.getErroredIfaces(); 2630 } 2631 2632 public String[] getTetheredDhcpRanges() { 2633 enforceConnectivityInternalPermission(); 2634 return mTethering.getTetheredDhcpRanges(); 2635 } 2636 2637 // if ro.tether.denied = true we default to no tethering 2638 // gservices could set the secure setting to 1 though to enable it on a build where it 2639 // had previously been turned off. 2640 public boolean isTetheringSupported() { 2641 enforceTetherAccessPermission(); 2642 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2643 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2644 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2645 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2646 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2647 mTethering.getTetherableWifiRegexs().length != 0 || 2648 mTethering.getTetherableBluetoothRegexs().length != 0) && 2649 mTethering.getUpstreamIfaceTypes().length != 0); 2650 } 2651 2652 // Called when we lose the default network and have no replacement yet. 2653 // This will automatically be cleared after X seconds or a new default network 2654 // becomes CONNECTED, whichever happens first. The timer is started by the 2655 // first caller and not restarted by subsequent callers. 2656 private void requestNetworkTransitionWakelock(String forWhom) { 2657 int serialNum = 0; 2658 synchronized (this) { 2659 if (mNetTransitionWakeLock.isHeld()) return; 2660 serialNum = ++mNetTransitionWakeLockSerialNumber; 2661 mNetTransitionWakeLock.acquire(); 2662 mNetTransitionWakeLockCausedBy = forWhom; 2663 } 2664 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2665 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2666 mNetTransitionWakeLockTimeout); 2667 return; 2668 } 2669 2670 // 100 percent is full good, 0 is full bad. 2671 public void reportInetCondition(int networkType, int percentage) { 2672 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2673 if (nai == null) return; 2674 reportNetworkConnectivity(nai.network, percentage > 50); 2675 } 2676 2677 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2678 enforceAccessPermission(); 2679 enforceInternetPermission(); 2680 2681 NetworkAgentInfo nai; 2682 if (network == null) { 2683 nai = getDefaultNetwork(); 2684 } else { 2685 nai = getNetworkAgentInfoForNetwork(network); 2686 } 2687 if (nai == null) return; 2688 // Revalidate if the app report does not match our current validated state. 2689 if (hasConnectivity == nai.lastValidated) return; 2690 final int uid = Binder.getCallingUid(); 2691 if (DBG) { 2692 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2693 ") by " + uid); 2694 } 2695 synchronized (nai) { 2696 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2697 // which isn't meant to work on uncreated networks. 2698 if (!nai.created) return; 2699 2700 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2701 2702 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2703 } 2704 } 2705 2706 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2707 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2708 enforceConnectivityInternalPermission(); 2709 } 2710 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2711 if (nai == null) return; 2712 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2713 actionToken); 2714 } 2715 2716 private ProxyInfo getDefaultProxy() { 2717 // this information is already available as a world read/writable jvm property 2718 // so this API change wouldn't have a benifit. It also breaks the passing 2719 // of proxy info to all the JVMs. 2720 // enforceAccessPermission(); 2721 synchronized (mProxyLock) { 2722 ProxyInfo ret = mGlobalProxy; 2723 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2724 return ret; 2725 } 2726 } 2727 2728 public ProxyInfo getProxyForNetwork(Network network) { 2729 if (network == null) return getDefaultProxy(); 2730 final ProxyInfo globalProxy = getGlobalProxy(); 2731 if (globalProxy != null) return globalProxy; 2732 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2733 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2734 // caller may not have. 2735 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2736 if (nai == null) return null; 2737 synchronized (nai) { 2738 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2739 if (proxyInfo == null) return null; 2740 return new ProxyInfo(proxyInfo); 2741 } 2742 } 2743 2744 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2745 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2746 // proxy is null then there is no proxy in place). 2747 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2748 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2749 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2750 proxy = null; 2751 } 2752 return proxy; 2753 } 2754 2755 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2756 // better for determining if a new proxy broadcast is necessary: 2757 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2758 // avoid unnecessary broadcasts. 2759 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2760 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2761 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2762 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2763 // all set. 2764 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2765 a = canonicalizeProxyInfo(a); 2766 b = canonicalizeProxyInfo(b); 2767 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2768 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2769 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2770 } 2771 2772 public void setGlobalProxy(ProxyInfo proxyProperties) { 2773 enforceConnectivityInternalPermission(); 2774 2775 synchronized (mProxyLock) { 2776 if (proxyProperties == mGlobalProxy) return; 2777 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2778 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2779 2780 String host = ""; 2781 int port = 0; 2782 String exclList = ""; 2783 String pacFileUrl = ""; 2784 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2785 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2786 if (!proxyProperties.isValid()) { 2787 if (DBG) 2788 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2789 return; 2790 } 2791 mGlobalProxy = new ProxyInfo(proxyProperties); 2792 host = mGlobalProxy.getHost(); 2793 port = mGlobalProxy.getPort(); 2794 exclList = mGlobalProxy.getExclusionListAsString(); 2795 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2796 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2797 } 2798 } else { 2799 mGlobalProxy = null; 2800 } 2801 ContentResolver res = mContext.getContentResolver(); 2802 final long token = Binder.clearCallingIdentity(); 2803 try { 2804 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2805 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2806 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2807 exclList); 2808 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2809 } finally { 2810 Binder.restoreCallingIdentity(token); 2811 } 2812 2813 if (mGlobalProxy == null) { 2814 proxyProperties = mDefaultProxy; 2815 } 2816 sendProxyBroadcast(proxyProperties); 2817 } 2818 } 2819 2820 private void loadGlobalProxy() { 2821 ContentResolver res = mContext.getContentResolver(); 2822 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2823 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2824 String exclList = Settings.Global.getString(res, 2825 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2826 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2827 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2828 ProxyInfo proxyProperties; 2829 if (!TextUtils.isEmpty(pacFileUrl)) { 2830 proxyProperties = new ProxyInfo(pacFileUrl); 2831 } else { 2832 proxyProperties = new ProxyInfo(host, port, exclList); 2833 } 2834 if (!proxyProperties.isValid()) { 2835 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2836 return; 2837 } 2838 2839 synchronized (mProxyLock) { 2840 mGlobalProxy = proxyProperties; 2841 } 2842 } 2843 } 2844 2845 public ProxyInfo getGlobalProxy() { 2846 // this information is already available as a world read/writable jvm property 2847 // so this API change wouldn't have a benifit. It also breaks the passing 2848 // of proxy info to all the JVMs. 2849 // enforceAccessPermission(); 2850 synchronized (mProxyLock) { 2851 return mGlobalProxy; 2852 } 2853 } 2854 2855 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2856 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2857 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2858 proxy = null; 2859 } 2860 synchronized (mProxyLock) { 2861 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2862 if (mDefaultProxy == proxy) return; // catches repeated nulls 2863 if (proxy != null && !proxy.isValid()) { 2864 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2865 return; 2866 } 2867 2868 // This call could be coming from the PacManager, containing the port of the local 2869 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2870 // global (to get the correct local port), and send a broadcast. 2871 // TODO: Switch PacManager to have its own message to send back rather than 2872 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2873 if ((mGlobalProxy != null) && (proxy != null) 2874 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2875 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2876 mGlobalProxy = proxy; 2877 sendProxyBroadcast(mGlobalProxy); 2878 return; 2879 } 2880 mDefaultProxy = proxy; 2881 2882 if (mGlobalProxy != null) return; 2883 if (!mDefaultProxyDisabled) { 2884 sendProxyBroadcast(proxy); 2885 } 2886 } 2887 } 2888 2889 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2890 // This method gets called when any network changes proxy, but the broadcast only ever contains 2891 // the default proxy (even if it hasn't changed). 2892 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2893 // world where an app might be bound to a non-default network. 2894 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2895 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2896 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2897 2898 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2899 sendProxyBroadcast(getDefaultProxy()); 2900 } 2901 } 2902 2903 private void handleDeprecatedGlobalHttpProxy() { 2904 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2905 Settings.Global.HTTP_PROXY); 2906 if (!TextUtils.isEmpty(proxy)) { 2907 String data[] = proxy.split(":"); 2908 if (data.length == 0) { 2909 return; 2910 } 2911 2912 String proxyHost = data[0]; 2913 int proxyPort = 8080; 2914 if (data.length > 1) { 2915 try { 2916 proxyPort = Integer.parseInt(data[1]); 2917 } catch (NumberFormatException e) { 2918 return; 2919 } 2920 } 2921 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2922 setGlobalProxy(p); 2923 } 2924 } 2925 2926 private void sendProxyBroadcast(ProxyInfo proxy) { 2927 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2928 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2929 if (DBG) log("sending Proxy Broadcast for " + proxy); 2930 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2931 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2932 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2933 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2934 final long ident = Binder.clearCallingIdentity(); 2935 try { 2936 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2937 } finally { 2938 Binder.restoreCallingIdentity(ident); 2939 } 2940 } 2941 2942 private static class SettingsObserver extends ContentObserver { 2943 final private HashMap<Uri, Integer> mUriEventMap; 2944 final private Context mContext; 2945 final private Handler mHandler; 2946 2947 SettingsObserver(Context context, Handler handler) { 2948 super(null); 2949 mUriEventMap = new HashMap<Uri, Integer>(); 2950 mContext = context; 2951 mHandler = handler; 2952 } 2953 2954 void observe(Uri uri, int what) { 2955 mUriEventMap.put(uri, what); 2956 final ContentResolver resolver = mContext.getContentResolver(); 2957 resolver.registerContentObserver(uri, false, this); 2958 } 2959 2960 @Override 2961 public void onChange(boolean selfChange) { 2962 Slog.wtf(TAG, "Should never be reached."); 2963 } 2964 2965 @Override 2966 public void onChange(boolean selfChange, Uri uri) { 2967 final Integer what = mUriEventMap.get(uri); 2968 if (what != null) { 2969 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2970 } else { 2971 loge("No matching event to send for URI=" + uri); 2972 } 2973 } 2974 } 2975 2976 private static void log(String s) { 2977 Slog.d(TAG, s); 2978 } 2979 2980 private static void loge(String s) { 2981 Slog.e(TAG, s); 2982 } 2983 2984 private static <T> T checkNotNull(T value, String message) { 2985 if (value == null) { 2986 throw new NullPointerException(message); 2987 } 2988 return value; 2989 } 2990 2991 /** 2992 * Prepare for a VPN application. 2993 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2994 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2995 * 2996 * @param oldPackage Package name of the application which currently controls VPN, which will 2997 * be replaced. If there is no such application, this should should either be 2998 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 2999 * @param newPackage Package name of the application which should gain control of VPN, or 3000 * {@code null} to disable. 3001 * @param userId User for whom to prepare the new VPN. 3002 * 3003 * @hide 3004 */ 3005 @Override 3006 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3007 int userId) { 3008 enforceCrossUserPermission(userId); 3009 throwIfLockdownEnabled(); 3010 3011 synchronized(mVpns) { 3012 Vpn vpn = mVpns.get(userId); 3013 if (vpn != null) { 3014 return vpn.prepare(oldPackage, newPackage); 3015 } else { 3016 return false; 3017 } 3018 } 3019 } 3020 3021 /** 3022 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3023 * This method is used by system-privileged apps. 3024 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3025 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3026 * 3027 * @param packageName The package for which authorization state should change. 3028 * @param userId User for whom {@code packageName} is installed. 3029 * @param authorized {@code true} if this app should be able to start a VPN connection without 3030 * explicit user approval, {@code false} if not. 3031 * 3032 * @hide 3033 */ 3034 @Override 3035 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3036 enforceCrossUserPermission(userId); 3037 3038 synchronized(mVpns) { 3039 Vpn vpn = mVpns.get(userId); 3040 if (vpn != null) { 3041 vpn.setPackageAuthorization(packageName, authorized); 3042 } 3043 } 3044 } 3045 3046 /** 3047 * Configure a TUN interface and return its file descriptor. Parameters 3048 * are encoded and opaque to this class. This method is used by VpnBuilder 3049 * and not available in ConnectivityManager. Permissions are checked in 3050 * Vpn class. 3051 * @hide 3052 */ 3053 @Override 3054 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3055 throwIfLockdownEnabled(); 3056 int user = UserHandle.getUserId(Binder.getCallingUid()); 3057 synchronized(mVpns) { 3058 return mVpns.get(user).establish(config); 3059 } 3060 } 3061 3062 /** 3063 * Start legacy VPN, controlling native daemons as needed. Creates a 3064 * secondary thread to perform connection work, returning quickly. 3065 */ 3066 @Override 3067 public void startLegacyVpn(VpnProfile profile) { 3068 throwIfLockdownEnabled(); 3069 final LinkProperties egress = getActiveLinkProperties(); 3070 if (egress == null) { 3071 throw new IllegalStateException("Missing active network connection"); 3072 } 3073 int user = UserHandle.getUserId(Binder.getCallingUid()); 3074 synchronized(mVpns) { 3075 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3076 } 3077 } 3078 3079 /** 3080 * Return the information of the ongoing legacy VPN. This method is used 3081 * by VpnSettings and not available in ConnectivityManager. Permissions 3082 * are checked in Vpn class. 3083 */ 3084 @Override 3085 public LegacyVpnInfo getLegacyVpnInfo() { 3086 throwIfLockdownEnabled(); 3087 int user = UserHandle.getUserId(Binder.getCallingUid()); 3088 synchronized(mVpns) { 3089 return mVpns.get(user).getLegacyVpnInfo(); 3090 } 3091 } 3092 3093 /** 3094 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3095 * and not available in ConnectivityManager. 3096 */ 3097 @Override 3098 public VpnInfo[] getAllVpnInfo() { 3099 enforceConnectivityInternalPermission(); 3100 if (mLockdownEnabled) { 3101 return new VpnInfo[0]; 3102 } 3103 3104 synchronized(mVpns) { 3105 List<VpnInfo> infoList = new ArrayList<>(); 3106 for (int i = 0; i < mVpns.size(); i++) { 3107 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3108 if (info != null) { 3109 infoList.add(info); 3110 } 3111 } 3112 return infoList.toArray(new VpnInfo[infoList.size()]); 3113 } 3114 } 3115 3116 /** 3117 * @return VPN information for accounting, or null if we can't retrieve all required 3118 * information, e.g primary underlying iface. 3119 */ 3120 @Nullable 3121 private VpnInfo createVpnInfo(Vpn vpn) { 3122 VpnInfo info = vpn.getVpnInfo(); 3123 if (info == null) { 3124 return null; 3125 } 3126 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3127 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3128 // the underlyingNetworks list. 3129 if (underlyingNetworks == null) { 3130 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3131 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3132 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3133 } 3134 } else if (underlyingNetworks.length > 0) { 3135 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3136 if (linkProperties != null) { 3137 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3138 } 3139 } 3140 return info.primaryUnderlyingIface == null ? null : info; 3141 } 3142 3143 /** 3144 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3145 * VpnDialogs and not available in ConnectivityManager. 3146 * Permissions are checked in Vpn class. 3147 * @hide 3148 */ 3149 @Override 3150 public VpnConfig getVpnConfig(int userId) { 3151 enforceCrossUserPermission(userId); 3152 synchronized(mVpns) { 3153 Vpn vpn = mVpns.get(userId); 3154 if (vpn != null) { 3155 return vpn.getVpnConfig(); 3156 } else { 3157 return null; 3158 } 3159 } 3160 } 3161 3162 @Override 3163 public boolean updateLockdownVpn() { 3164 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3165 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3166 return false; 3167 } 3168 3169 // Tear down existing lockdown if profile was removed 3170 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3171 if (mLockdownEnabled) { 3172 if (!mKeyStore.isUnlocked()) { 3173 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3174 return false; 3175 } 3176 3177 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3178 final VpnProfile profile = VpnProfile.decode( 3179 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3180 int user = UserHandle.getUserId(Binder.getCallingUid()); 3181 synchronized(mVpns) { 3182 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3183 profile)); 3184 } 3185 } else { 3186 setLockdownTracker(null); 3187 } 3188 3189 return true; 3190 } 3191 3192 /** 3193 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3194 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3195 */ 3196 private void setLockdownTracker(LockdownVpnTracker tracker) { 3197 // Shutdown any existing tracker 3198 final LockdownVpnTracker existing = mLockdownTracker; 3199 mLockdownTracker = null; 3200 if (existing != null) { 3201 existing.shutdown(); 3202 } 3203 3204 try { 3205 if (tracker != null) { 3206 mNetd.setFirewallEnabled(true); 3207 mNetd.setFirewallInterfaceRule("lo", true); 3208 mLockdownTracker = tracker; 3209 mLockdownTracker.init(); 3210 } else { 3211 mNetd.setFirewallEnabled(false); 3212 } 3213 } catch (RemoteException e) { 3214 // ignored; NMS lives inside system_server 3215 } 3216 } 3217 3218 private void throwIfLockdownEnabled() { 3219 if (mLockdownEnabled) { 3220 throw new IllegalStateException("Unavailable in lockdown mode"); 3221 } 3222 } 3223 3224 @Override 3225 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3226 // TODO: Remove? Any reason to trigger a provisioning check? 3227 return -1; 3228 } 3229 3230 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3231 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3232 3233 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3234 if (DBG) { 3235 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3236 + " action=" + action); 3237 } 3238 Intent intent = new Intent(action); 3239 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3240 // Concatenate the range of types onto the range of NetIDs. 3241 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3242 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3243 networkType, null, pendingIntent); 3244 } 3245 3246 /** 3247 * Show or hide network provisioning notifications. 3248 * 3249 * We use notifications for two purposes: to notify that a network requires sign in 3250 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3251 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3252 * particular network we can display the notification type that was most recently requested. 3253 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3254 * might first display NO_INTERNET, and then when the captive portal check completes, display 3255 * SIGN_IN. 3256 * 3257 * @param id an identifier that uniquely identifies this notification. This must match 3258 * between show and hide calls. We use the NetID value but for legacy callers 3259 * we concatenate the range of types with the range of NetIDs. 3260 */ 3261 private void setProvNotificationVisibleIntent(boolean visible, int id, 3262 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent) { 3263 if (DBG) { 3264 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3265 + " networkType=" + getNetworkTypeName(networkType) 3266 + " extraInfo=" + extraInfo); 3267 } 3268 3269 Resources r = Resources.getSystem(); 3270 NotificationManager notificationManager = (NotificationManager) mContext 3271 .getSystemService(Context.NOTIFICATION_SERVICE); 3272 3273 if (visible) { 3274 CharSequence title; 3275 CharSequence details; 3276 int icon; 3277 if (notifyType == NotificationType.NO_INTERNET && 3278 networkType == ConnectivityManager.TYPE_WIFI) { 3279 title = r.getString(R.string.wifi_no_internet, 0); 3280 details = r.getString(R.string.wifi_no_internet_detailed); 3281 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3282 } else if (notifyType == NotificationType.SIGN_IN) { 3283 switch (networkType) { 3284 case ConnectivityManager.TYPE_WIFI: 3285 title = r.getString(R.string.wifi_available_sign_in, 0); 3286 details = r.getString(R.string.network_available_sign_in_detailed, 3287 extraInfo); 3288 icon = R.drawable.stat_notify_wifi_in_range; 3289 break; 3290 case ConnectivityManager.TYPE_MOBILE: 3291 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3292 title = r.getString(R.string.network_available_sign_in, 0); 3293 // TODO: Change this to pull from NetworkInfo once a printable 3294 // name has been added to it 3295 details = mTelephonyManager.getNetworkOperatorName(); 3296 icon = R.drawable.stat_notify_rssi_in_range; 3297 break; 3298 default: 3299 title = r.getString(R.string.network_available_sign_in, 0); 3300 details = r.getString(R.string.network_available_sign_in_detailed, 3301 extraInfo); 3302 icon = R.drawable.stat_notify_rssi_in_range; 3303 break; 3304 } 3305 } else { 3306 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3307 + getNetworkTypeName(networkType)); 3308 return; 3309 } 3310 3311 Notification notification = new Notification.Builder(mContext) 3312 .setWhen(0) 3313 .setSmallIcon(icon) 3314 .setAutoCancel(true) 3315 .setTicker(title) 3316 .setColor(mContext.getColor( 3317 com.android.internal.R.color.system_notification_accent_color)) 3318 .setContentTitle(title) 3319 .setContentText(details) 3320 .setContentIntent(intent) 3321 .build(); 3322 3323 try { 3324 notificationManager.notify(NOTIFICATION_ID, id, notification); 3325 } catch (NullPointerException npe) { 3326 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3327 npe.printStackTrace(); 3328 } 3329 } else { 3330 try { 3331 notificationManager.cancel(NOTIFICATION_ID, id); 3332 } catch (NullPointerException npe) { 3333 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3334 npe.printStackTrace(); 3335 } 3336 } 3337 } 3338 3339 /** Location to an updatable file listing carrier provisioning urls. 3340 * An example: 3341 * 3342 * <?xml version="1.0" encoding="utf-8"?> 3343 * <provisioningUrls> 3344 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3345 * </provisioningUrls> 3346 */ 3347 private static final String PROVISIONING_URL_PATH = 3348 "/data/misc/radio/provisioning_urls.xml"; 3349 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3350 3351 /** XML tag for root element. */ 3352 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3353 /** XML tag for individual url */ 3354 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3355 /** XML attribute for mcc */ 3356 private static final String ATTR_MCC = "mcc"; 3357 /** XML attribute for mnc */ 3358 private static final String ATTR_MNC = "mnc"; 3359 3360 private String getProvisioningUrlBaseFromFile() { 3361 FileReader fileReader = null; 3362 XmlPullParser parser = null; 3363 Configuration config = mContext.getResources().getConfiguration(); 3364 3365 try { 3366 fileReader = new FileReader(mProvisioningUrlFile); 3367 parser = Xml.newPullParser(); 3368 parser.setInput(fileReader); 3369 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3370 3371 while (true) { 3372 XmlUtils.nextElement(parser); 3373 3374 String element = parser.getName(); 3375 if (element == null) break; 3376 3377 if (element.equals(TAG_PROVISIONING_URL)) { 3378 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3379 try { 3380 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3381 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3382 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3383 parser.next(); 3384 if (parser.getEventType() == XmlPullParser.TEXT) { 3385 return parser.getText(); 3386 } 3387 } 3388 } 3389 } catch (NumberFormatException e) { 3390 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3391 } 3392 } 3393 } 3394 return null; 3395 } catch (FileNotFoundException e) { 3396 loge("Carrier Provisioning Urls file not found"); 3397 } catch (XmlPullParserException e) { 3398 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3399 } catch (IOException e) { 3400 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3401 } finally { 3402 if (fileReader != null) { 3403 try { 3404 fileReader.close(); 3405 } catch (IOException e) {} 3406 } 3407 } 3408 return null; 3409 } 3410 3411 @Override 3412 public String getMobileProvisioningUrl() { 3413 enforceConnectivityInternalPermission(); 3414 String url = getProvisioningUrlBaseFromFile(); 3415 if (TextUtils.isEmpty(url)) { 3416 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3417 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3418 } else { 3419 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3420 } 3421 // populate the iccid, imei and phone number in the provisioning url. 3422 if (!TextUtils.isEmpty(url)) { 3423 String phoneNumber = mTelephonyManager.getLine1Number(); 3424 if (TextUtils.isEmpty(phoneNumber)) { 3425 phoneNumber = "0000000000"; 3426 } 3427 url = String.format(url, 3428 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3429 mTelephonyManager.getDeviceId() /* IMEI */, 3430 phoneNumber /* Phone numer */); 3431 } 3432 3433 return url; 3434 } 3435 3436 @Override 3437 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3438 String action) { 3439 enforceConnectivityInternalPermission(); 3440 final long ident = Binder.clearCallingIdentity(); 3441 try { 3442 setProvNotificationVisible(visible, networkType, action); 3443 } finally { 3444 Binder.restoreCallingIdentity(ident); 3445 } 3446 } 3447 3448 @Override 3449 public void setAirplaneMode(boolean enable) { 3450 enforceConnectivityInternalPermission(); 3451 final long ident = Binder.clearCallingIdentity(); 3452 try { 3453 final ContentResolver cr = mContext.getContentResolver(); 3454 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3455 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3456 intent.putExtra("state", enable); 3457 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3458 } finally { 3459 Binder.restoreCallingIdentity(ident); 3460 } 3461 } 3462 3463 private void onUserStart(int userId) { 3464 synchronized(mVpns) { 3465 Vpn userVpn = mVpns.get(userId); 3466 if (userVpn != null) { 3467 loge("Starting user already has a VPN"); 3468 return; 3469 } 3470 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3471 mVpns.put(userId, userVpn); 3472 } 3473 } 3474 3475 private void onUserStop(int userId) { 3476 synchronized(mVpns) { 3477 Vpn userVpn = mVpns.get(userId); 3478 if (userVpn == null) { 3479 loge("Stopping user has no VPN"); 3480 return; 3481 } 3482 mVpns.delete(userId); 3483 } 3484 } 3485 3486 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3487 @Override 3488 public void onReceive(Context context, Intent intent) { 3489 final String action = intent.getAction(); 3490 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3491 if (userId == UserHandle.USER_NULL) return; 3492 3493 if (Intent.ACTION_USER_STARTING.equals(action)) { 3494 onUserStart(userId); 3495 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3496 onUserStop(userId); 3497 } 3498 } 3499 }; 3500 3501 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3502 new HashMap<Messenger, NetworkFactoryInfo>(); 3503 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3504 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3505 3506 private static class NetworkFactoryInfo { 3507 public final String name; 3508 public final Messenger messenger; 3509 public final AsyncChannel asyncChannel; 3510 3511 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3512 this.name = name; 3513 this.messenger = messenger; 3514 this.asyncChannel = asyncChannel; 3515 } 3516 } 3517 3518 /** 3519 * Tracks info about the requester. 3520 * Also used to notice when the calling process dies so we can self-expire 3521 */ 3522 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3523 static final boolean REQUEST = true; 3524 static final boolean LISTEN = false; 3525 3526 final NetworkRequest request; 3527 final PendingIntent mPendingIntent; 3528 boolean mPendingIntentSent; 3529 private final IBinder mBinder; 3530 final int mPid; 3531 final int mUid; 3532 final Messenger messenger; 3533 final boolean isRequest; 3534 3535 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3536 request = r; 3537 mPendingIntent = pi; 3538 messenger = null; 3539 mBinder = null; 3540 mPid = getCallingPid(); 3541 mUid = getCallingUid(); 3542 this.isRequest = isRequest; 3543 } 3544 3545 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3546 super(); 3547 messenger = m; 3548 request = r; 3549 mBinder = binder; 3550 mPid = getCallingPid(); 3551 mUid = getCallingUid(); 3552 this.isRequest = isRequest; 3553 mPendingIntent = null; 3554 3555 try { 3556 mBinder.linkToDeath(this, 0); 3557 } catch (RemoteException e) { 3558 binderDied(); 3559 } 3560 } 3561 3562 void unlinkDeathRecipient() { 3563 if (mBinder != null) { 3564 mBinder.unlinkToDeath(this, 0); 3565 } 3566 } 3567 3568 public void binderDied() { 3569 log("ConnectivityService NetworkRequestInfo binderDied(" + 3570 request + ", " + mBinder + ")"); 3571 releaseNetworkRequest(request); 3572 } 3573 3574 public String toString() { 3575 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3576 mPid + " for " + request + 3577 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3578 } 3579 } 3580 3581 private void ensureImmutableCapabilities(NetworkCapabilities networkCapabilities) { 3582 if (networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 3583 throw new IllegalArgumentException( 3584 "Cannot request network with NET_CAPABILITY_VALIDATED"); 3585 } 3586 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL)) { 3587 throw new IllegalArgumentException( 3588 "Cannot request network with NET_CAPABILITY_CAPTIVE_PORTAL"); 3589 } 3590 } 3591 3592 @Override 3593 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3594 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3595 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3596 enforceNetworkRequestPermissions(networkCapabilities); 3597 enforceMeteredApnPolicy(networkCapabilities); 3598 ensureImmutableCapabilities(networkCapabilities); 3599 3600 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3601 throw new IllegalArgumentException("Bad timeout specified"); 3602 } 3603 3604 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3605 nextNetworkRequestId()); 3606 if (DBG) log("requestNetwork for " + networkRequest); 3607 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3608 NetworkRequestInfo.REQUEST); 3609 3610 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3611 if (timeoutMs > 0) { 3612 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3613 nri), timeoutMs); 3614 } 3615 return networkRequest; 3616 } 3617 3618 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3619 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3620 enforceConnectivityInternalPermission(); 3621 } else { 3622 enforceChangePermission(); 3623 } 3624 } 3625 3626 @Override 3627 public boolean requestBandwidthUpdate(Network network) { 3628 enforceAccessPermission(); 3629 NetworkAgentInfo nai = null; 3630 if (network == null) { 3631 return false; 3632 } 3633 synchronized (mNetworkForNetId) { 3634 nai = mNetworkForNetId.get(network.netId); 3635 } 3636 if (nai != null) { 3637 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3638 return true; 3639 } 3640 return false; 3641 } 3642 3643 3644 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3645 // if UID is restricted, don't allow them to bring up metered APNs 3646 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3647 final int uidRules; 3648 final int uid = Binder.getCallingUid(); 3649 synchronized(mRulesLock) { 3650 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3651 } 3652 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3653 // we could silently fail or we can filter the available nets to only give 3654 // them those they have access to. Chose the more useful 3655 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3656 } 3657 } 3658 } 3659 3660 @Override 3661 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3662 PendingIntent operation) { 3663 checkNotNull(operation, "PendingIntent cannot be null."); 3664 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3665 enforceNetworkRequestPermissions(networkCapabilities); 3666 enforceMeteredApnPolicy(networkCapabilities); 3667 ensureImmutableCapabilities(networkCapabilities); 3668 3669 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3670 nextNetworkRequestId()); 3671 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3672 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3673 NetworkRequestInfo.REQUEST); 3674 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3675 nri)); 3676 return networkRequest; 3677 } 3678 3679 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3680 mHandler.sendMessageDelayed( 3681 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3682 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3683 } 3684 3685 @Override 3686 public void releasePendingNetworkRequest(PendingIntent operation) { 3687 checkNotNull(operation, "PendingIntent cannot be null."); 3688 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3689 getCallingUid(), 0, operation)); 3690 } 3691 3692 // In order to implement the compatibility measure for pre-M apps that call 3693 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3694 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3695 // This ensures it has permission to do so. 3696 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3697 if (nc == null) { 3698 return false; 3699 } 3700 int[] transportTypes = nc.getTransportTypes(); 3701 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3702 return false; 3703 } 3704 try { 3705 mContext.enforceCallingOrSelfPermission( 3706 android.Manifest.permission.ACCESS_WIFI_STATE, 3707 "ConnectivityService"); 3708 } catch (SecurityException e) { 3709 return false; 3710 } 3711 return true; 3712 } 3713 3714 @Override 3715 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3716 Messenger messenger, IBinder binder) { 3717 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3718 enforceAccessPermission(); 3719 } 3720 3721 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3722 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3723 if (DBG) log("listenForNetwork for " + networkRequest); 3724 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3725 NetworkRequestInfo.LISTEN); 3726 3727 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3728 return networkRequest; 3729 } 3730 3731 @Override 3732 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3733 PendingIntent operation) { 3734 checkNotNull(operation, "PendingIntent cannot be null."); 3735 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3736 enforceAccessPermission(); 3737 } 3738 3739 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3740 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3741 if (DBG) log("pendingListenForNetwork for " + networkRequest + " to trigger " + operation); 3742 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3743 NetworkRequestInfo.LISTEN); 3744 3745 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3746 } 3747 3748 @Override 3749 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3750 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3751 0, networkRequest)); 3752 } 3753 3754 @Override 3755 public void registerNetworkFactory(Messenger messenger, String name) { 3756 enforceConnectivityInternalPermission(); 3757 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3758 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3759 } 3760 3761 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3762 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3763 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3764 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3765 } 3766 3767 @Override 3768 public void unregisterNetworkFactory(Messenger messenger) { 3769 enforceConnectivityInternalPermission(); 3770 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3771 } 3772 3773 private void handleUnregisterNetworkFactory(Messenger messenger) { 3774 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3775 if (nfi == null) { 3776 loge("Failed to find Messenger in unregisterNetworkFactory"); 3777 return; 3778 } 3779 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3780 } 3781 3782 /** 3783 * NetworkAgentInfo supporting a request by requestId. 3784 * These have already been vetted (their Capabilities satisfy the request) 3785 * and the are the highest scored network available. 3786 * the are keyed off the Requests requestId. 3787 */ 3788 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3789 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3790 new SparseArray<NetworkAgentInfo>(); 3791 3792 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3793 @GuardedBy("mNetworkForNetId") 3794 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3795 new SparseArray<NetworkAgentInfo>(); 3796 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3797 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3798 // there may not be a strict 1:1 correlation between the two. 3799 @GuardedBy("mNetworkForNetId") 3800 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3801 3802 // NetworkAgentInfo keyed off its connecting messenger 3803 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3804 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3805 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3806 new HashMap<Messenger, NetworkAgentInfo>(); 3807 3808 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3809 private final NetworkRequest mDefaultRequest; 3810 3811 // Request used to optionally keep mobile data active even when higher 3812 // priority networks like Wi-Fi are active. 3813 private final NetworkRequest mDefaultMobileDataRequest; 3814 3815 private NetworkAgentInfo getDefaultNetwork() { 3816 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3817 } 3818 3819 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3820 return nai == getDefaultNetwork(); 3821 } 3822 3823 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3824 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3825 int currentScore, NetworkMisc networkMisc) { 3826 enforceConnectivityInternalPermission(); 3827 3828 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3829 // satisfies mDefaultRequest. 3830 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3831 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3832 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3833 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3834 synchronized (this) { 3835 nai.networkMonitor.systemReady = mSystemReady; 3836 } 3837 if (DBG) log("registerNetworkAgent " + nai); 3838 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3839 return nai.network.netId; 3840 } 3841 3842 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3843 if (VDBG) log("Got NetworkAgent Messenger"); 3844 mNetworkAgentInfos.put(na.messenger, na); 3845 synchronized (mNetworkForNetId) { 3846 mNetworkForNetId.put(na.network.netId, na); 3847 } 3848 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3849 NetworkInfo networkInfo = na.networkInfo; 3850 na.networkInfo = null; 3851 updateNetworkInfo(na, networkInfo); 3852 } 3853 3854 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3855 LinkProperties newLp = networkAgent.linkProperties; 3856 int netId = networkAgent.network.netId; 3857 3858 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3859 // we do anything else, make sure its LinkProperties are accurate. 3860 if (networkAgent.clatd != null) { 3861 networkAgent.clatd.fixupLinkProperties(oldLp); 3862 } 3863 3864 updateInterfaces(newLp, oldLp, netId); 3865 updateMtu(newLp, oldLp); 3866 // TODO - figure out what to do for clat 3867// for (LinkProperties lp : newLp.getStackedLinks()) { 3868// updateMtu(lp, null); 3869// } 3870 updateTcpBufferSizes(networkAgent); 3871 3872 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3873 // In L, we used it only when the network had Internet access but provided no DNS servers. 3874 // For now, just disable it, and if disabling it doesn't break things, remove it. 3875 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3876 // NET_CAPABILITY_INTERNET); 3877 final boolean useDefaultDns = false; 3878 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3879 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3880 3881 updateClat(newLp, oldLp, networkAgent); 3882 if (isDefaultNetwork(networkAgent)) { 3883 handleApplyDefaultProxy(newLp.getHttpProxy()); 3884 } else { 3885 updateProxy(newLp, oldLp, networkAgent); 3886 } 3887 // TODO - move this check to cover the whole function 3888 if (!Objects.equals(newLp, oldLp)) { 3889 notifyIfacesChanged(); 3890 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3891 } 3892 } 3893 3894 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3895 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3896 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3897 3898 if (!wasRunningClat && shouldRunClat) { 3899 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3900 nai.clatd.start(); 3901 } else if (wasRunningClat && !shouldRunClat) { 3902 nai.clatd.stop(); 3903 } 3904 } 3905 3906 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3907 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3908 if (oldLp != null) { 3909 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3910 } else if (newLp != null) { 3911 interfaceDiff.added = newLp.getAllInterfaceNames(); 3912 } 3913 for (String iface : interfaceDiff.added) { 3914 try { 3915 if (DBG) log("Adding iface " + iface + " to network " + netId); 3916 mNetd.addInterfaceToNetwork(iface, netId); 3917 } catch (Exception e) { 3918 loge("Exception adding interface: " + e); 3919 } 3920 } 3921 for (String iface : interfaceDiff.removed) { 3922 try { 3923 if (DBG) log("Removing iface " + iface + " from network " + netId); 3924 mNetd.removeInterfaceFromNetwork(iface, netId); 3925 } catch (Exception e) { 3926 loge("Exception removing interface: " + e); 3927 } 3928 } 3929 } 3930 3931 /** 3932 * Have netd update routes from oldLp to newLp. 3933 * @return true if routes changed between oldLp and newLp 3934 */ 3935 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3936 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3937 if (oldLp != null) { 3938 routeDiff = oldLp.compareAllRoutes(newLp); 3939 } else if (newLp != null) { 3940 routeDiff.added = newLp.getAllRoutes(); 3941 } 3942 3943 // add routes before removing old in case it helps with continuous connectivity 3944 3945 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3946 for (RouteInfo route : routeDiff.added) { 3947 if (route.hasGateway()) continue; 3948 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3949 try { 3950 mNetd.addRoute(netId, route); 3951 } catch (Exception e) { 3952 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3953 loge("Exception in addRoute for non-gateway: " + e); 3954 } 3955 } 3956 } 3957 for (RouteInfo route : routeDiff.added) { 3958 if (route.hasGateway() == false) continue; 3959 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3960 try { 3961 mNetd.addRoute(netId, route); 3962 } catch (Exception e) { 3963 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3964 loge("Exception in addRoute for gateway: " + e); 3965 } 3966 } 3967 } 3968 3969 for (RouteInfo route : routeDiff.removed) { 3970 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3971 try { 3972 mNetd.removeRoute(netId, route); 3973 } catch (Exception e) { 3974 loge("Exception in removeRoute: " + e); 3975 } 3976 } 3977 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3978 } 3979 3980 // TODO: investigate moving this into LinkProperties, if only to make more accurate 3981 // the isProvisioned() checks. 3982 private static Collection<InetAddress> getLikelyReachableDnsServers(LinkProperties lp) { 3983 final ArrayList<InetAddress> dnsServers = new ArrayList<InetAddress>(); 3984 final List<RouteInfo> allRoutes = lp.getAllRoutes(); 3985 for (InetAddress nameserver : lp.getDnsServers()) { 3986 // If the LinkProperties doesn't include a route to the nameserver, ignore it. 3987 final RouteInfo bestRoute = RouteInfo.selectBestRoute(allRoutes, nameserver); 3988 if (bestRoute == null) { 3989 continue; 3990 } 3991 3992 // TODO: better source address evaluation for destination addresses. 3993 if (nameserver instanceof Inet4Address) { 3994 if (!lp.hasIPv4Address()) { 3995 continue; 3996 } 3997 } else if (nameserver instanceof Inet6Address) { 3998 if (nameserver.isLinkLocalAddress()) { 3999 if (((Inet6Address)nameserver).getScopeId() == 0) { 4000 // For now, just make sure link-local DNS servers have 4001 // scopedIds set, since DNS lookups will fail otherwise. 4002 // TODO: verify the scopeId matches that of lp's interface. 4003 continue; 4004 } 4005 } else { 4006 if (bestRoute.isIPv6Default() && !lp.hasGlobalIPv6Address()) { 4007 // TODO: reconsider all corner cases (disconnected ULA networks, ...). 4008 continue; 4009 } 4010 } 4011 } 4012 4013 dnsServers.add(nameserver); 4014 } 4015 return Collections.unmodifiableList(dnsServers); 4016 } 4017 4018 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4019 boolean flush, boolean useDefaultDns) { 4020 // TODO: consider comparing the getLikelyReachableDnsServers() lists, in case the 4021 // route to a DNS server has been removed (only really applicable in special cases 4022 // where there is no default route). 4023 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4024 Collection<InetAddress> dnses = getLikelyReachableDnsServers(newLp); 4025 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4026 dnses = new ArrayList(); 4027 dnses.add(mDefaultDns); 4028 if (DBG) { 4029 loge("no dns provided for netId " + netId + ", so using defaults"); 4030 } 4031 } 4032 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4033 try { 4034 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4035 newLp.getDomains()); 4036 } catch (Exception e) { 4037 loge("Exception in setDnsServersForNetwork: " + e); 4038 } 4039 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4040 if (defaultNai != null && defaultNai.network.netId == netId) { 4041 setDefaultDnsSystemProperties(dnses); 4042 } 4043 flushVmDnsCache(); 4044 } else if (flush) { 4045 try { 4046 mNetd.flushNetworkDnsCache(netId); 4047 } catch (Exception e) { 4048 loge("Exception in flushNetworkDnsCache: " + e); 4049 } 4050 flushVmDnsCache(); 4051 } 4052 } 4053 4054 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4055 int last = 0; 4056 for (InetAddress dns : dnses) { 4057 ++last; 4058 String key = "net.dns" + last; 4059 String value = dns.getHostAddress(); 4060 SystemProperties.set(key, value); 4061 } 4062 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4063 String key = "net.dns" + i; 4064 SystemProperties.set(key, ""); 4065 } 4066 mNumDnsEntries = last; 4067 } 4068 4069 /** 4070 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4071 * augmented with any stateful capabilities implied from {@code networkAgent} 4072 * (e.g., validated status and captive portal status). 4073 * 4074 * @param networkAgent the network having its capabilities updated. 4075 * @param networkCapabilities the new network capabilities. 4076 * @param nascent indicates whether {@code networkAgent} was validated 4077 * (i.e. had everValidated set for the first time) immediately prior to this call. 4078 */ 4079 private void updateCapabilities(NetworkAgentInfo networkAgent, 4080 NetworkCapabilities networkCapabilities, NascentState nascent) { 4081 // Don't modify caller's NetworkCapabilities. 4082 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4083 if (networkAgent.lastValidated) { 4084 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4085 } else { 4086 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4087 } 4088 if (networkAgent.lastCaptivePortalDetected) { 4089 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4090 } else { 4091 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4092 } 4093 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4094 synchronized (networkAgent) { 4095 networkAgent.networkCapabilities = networkCapabilities; 4096 } 4097 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore(), nascent); 4098 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4099 } 4100 } 4101 4102 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4103 for (int i = 0; i < nai.networkRequests.size(); i++) { 4104 NetworkRequest nr = nai.networkRequests.valueAt(i); 4105 // Don't send listening requests to factories. b/17393458 4106 if (!isRequest(nr)) continue; 4107 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4108 } 4109 } 4110 4111 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4112 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4113 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4114 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4115 networkRequest); 4116 } 4117 } 4118 4119 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4120 int notificationType) { 4121 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4122 Intent intent = new Intent(); 4123 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4124 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4125 nri.mPendingIntentSent = true; 4126 sendIntent(nri.mPendingIntent, intent); 4127 } 4128 // else not handled 4129 } 4130 4131 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4132 mPendingIntentWakeLock.acquire(); 4133 try { 4134 if (DBG) log("Sending " + pendingIntent); 4135 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4136 } catch (PendingIntent.CanceledException e) { 4137 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4138 mPendingIntentWakeLock.release(); 4139 releasePendingNetworkRequest(pendingIntent); 4140 } 4141 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4142 } 4143 4144 @Override 4145 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4146 String resultData, Bundle resultExtras) { 4147 if (DBG) log("Finished sending " + pendingIntent); 4148 mPendingIntentWakeLock.release(); 4149 // Release with a delay so the receiving client has an opportunity to put in its 4150 // own request. 4151 releasePendingNetworkRequestWithDelay(pendingIntent); 4152 } 4153 4154 private void callCallbackForRequest(NetworkRequestInfo nri, 4155 NetworkAgentInfo networkAgent, int notificationType) { 4156 if (nri.messenger == null) return; // Default request has no msgr 4157 Bundle bundle = new Bundle(); 4158 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4159 new NetworkRequest(nri.request)); 4160 Message msg = Message.obtain(); 4161 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4162 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4163 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4164 } 4165 switch (notificationType) { 4166 case ConnectivityManager.CALLBACK_LOSING: { 4167 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4168 break; 4169 } 4170 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4171 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4172 new NetworkCapabilities(networkAgent.networkCapabilities)); 4173 break; 4174 } 4175 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4176 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4177 new LinkProperties(networkAgent.linkProperties)); 4178 break; 4179 } 4180 } 4181 msg.what = notificationType; 4182 msg.setData(bundle); 4183 try { 4184 if (VDBG) { 4185 log("sending notification " + notifyTypeToName(notificationType) + 4186 " for " + nri.request); 4187 } 4188 nri.messenger.send(msg); 4189 } catch (RemoteException e) { 4190 // may occur naturally in the race of binder death. 4191 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4192 } 4193 } 4194 4195 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4196 for (int i = 0; i < nai.networkRequests.size(); i++) { 4197 NetworkRequest nr = nai.networkRequests.valueAt(i); 4198 // Ignore listening requests. 4199 if (!isRequest(nr)) continue; 4200 loge("Dead network still had at least " + nr); 4201 break; 4202 } 4203 nai.asyncChannel.disconnect(); 4204 } 4205 4206 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4207 if (oldNetwork == null) { 4208 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4209 return; 4210 } 4211 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4212 teardownUnneededNetwork(oldNetwork); 4213 } 4214 4215 private void makeDefault(NetworkAgentInfo newNetwork) { 4216 if (DBG) log("Switching to new default network: " + newNetwork); 4217 setupDataActivityTracking(newNetwork); 4218 try { 4219 mNetd.setDefaultNetId(newNetwork.network.netId); 4220 } catch (Exception e) { 4221 loge("Exception setting default network :" + e); 4222 } 4223 notifyLockdownVpn(newNetwork); 4224 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4225 updateTcpBufferSizes(newNetwork); 4226 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4227 } 4228 4229 // Handles a network appearing or improving its score. 4230 // 4231 // - Evaluates all current NetworkRequests that can be 4232 // satisfied by newNetwork, and reassigns to newNetwork 4233 // any such requests for which newNetwork is the best. 4234 // 4235 // - Lingers any validated Networks that as a result are no longer 4236 // needed. A network is needed if it is the best network for 4237 // one or more NetworkRequests, or if it is a VPN. 4238 // 4239 // - Tears down newNetwork if it just became validated 4240 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4241 // 4242 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4243 // networks that have no chance (i.e. even if validated) 4244 // of becoming the highest scoring network. 4245 // 4246 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4247 // it does not remove NetworkRequests that other Networks could better satisfy. 4248 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4249 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4250 // as it performs better by a factor of the number of Networks. 4251 // 4252 // @param newNetwork is the network to be matched against NetworkRequests. 4253 // @param nascent indicates if newNetwork just became validated, in which case it should be 4254 // torn down if unneeded. 4255 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4256 // performed to tear down unvalidated networks that have no chance (i.e. even if 4257 // validated) of becoming the highest scoring network. 4258 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4259 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4260 if (!newNetwork.created) return; 4261 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4262 loge("ERROR: nascent network not validated."); 4263 } 4264 boolean keep = newNetwork.isVPN(); 4265 boolean isNewDefault = false; 4266 NetworkAgentInfo oldDefaultNetwork = null; 4267 if (DBG) log("rematching " + newNetwork.name()); 4268 // Find and migrate to this Network any NetworkRequests for 4269 // which this network is now the best. 4270 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4271 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4272 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4273 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4274 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4275 if (newNetwork == currentNetwork) { 4276 if (DBG) { 4277 log("Network " + newNetwork.name() + " was already satisfying" + 4278 " request " + nri.request.requestId + ". No change."); 4279 } 4280 keep = true; 4281 continue; 4282 } 4283 4284 // check if it satisfies the NetworkCapabilities 4285 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4286 if (newNetwork.satisfies(nri.request)) { 4287 if (!nri.isRequest) { 4288 // This is not a request, it's a callback listener. 4289 // Add it to newNetwork regardless of score. 4290 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4291 continue; 4292 } 4293 4294 // next check if it's better than any current network we're using for 4295 // this request 4296 if (VDBG) { 4297 log("currentScore = " + 4298 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4299 ", newScore = " + newNetwork.getCurrentScore()); 4300 } 4301 if (currentNetwork == null || 4302 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4303 if (currentNetwork != null) { 4304 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4305 currentNetwork.networkRequests.remove(nri.request.requestId); 4306 currentNetwork.networkLingered.add(nri.request); 4307 affectedNetworks.add(currentNetwork); 4308 } else { 4309 if (DBG) log(" accepting network in place of null"); 4310 } 4311 unlinger(newNetwork); 4312 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4313 if (!newNetwork.addRequest(nri.request)) { 4314 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4315 } 4316 addedRequests.add(nri); 4317 keep = true; 4318 // Tell NetworkFactories about the new score, so they can stop 4319 // trying to connect if they know they cannot match it. 4320 // TODO - this could get expensive if we have alot of requests for this 4321 // network. Think about if there is a way to reduce this. Push 4322 // netid->request mapping to each factory? 4323 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4324 if (mDefaultRequest.requestId == nri.request.requestId) { 4325 isNewDefault = true; 4326 oldDefaultNetwork = currentNetwork; 4327 } 4328 } 4329 } 4330 } 4331 // Linger any networks that are no longer needed. 4332 for (NetworkAgentInfo nai : affectedNetworks) { 4333 if (nai.everValidated && unneeded(nai)) { 4334 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4335 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4336 } else { 4337 unlinger(nai); 4338 } 4339 } 4340 if (keep) { 4341 if (isNewDefault) { 4342 // Notify system services that this network is up. 4343 makeDefault(newNetwork); 4344 synchronized (ConnectivityService.this) { 4345 // have a new default network, release the transition wakelock in 4346 // a second if it's held. The second pause is to allow apps 4347 // to reconnect over the new network 4348 if (mNetTransitionWakeLock.isHeld()) { 4349 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4350 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4351 mNetTransitionWakeLockSerialNumber, 0), 4352 1000); 4353 } 4354 } 4355 } 4356 4357 // do this after the default net is switched, but 4358 // before LegacyTypeTracker sends legacy broadcasts 4359 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4360 4361 if (isNewDefault) { 4362 // Maintain the illusion: since the legacy API only 4363 // understands one network at a time, we must pretend 4364 // that the current default network disconnected before 4365 // the new one connected. 4366 if (oldDefaultNetwork != null) { 4367 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4368 oldDefaultNetwork, true); 4369 } 4370 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4371 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4372 notifyLockdownVpn(newNetwork); 4373 } 4374 4375 // Notify battery stats service about this network, both the normal 4376 // interface and any stacked links. 4377 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4378 try { 4379 final IBatteryStats bs = BatteryStatsService.getService(); 4380 final int type = newNetwork.networkInfo.getType(); 4381 4382 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4383 bs.noteNetworkInterfaceType(baseIface, type); 4384 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4385 final String stackedIface = stacked.getInterfaceName(); 4386 bs.noteNetworkInterfaceType(stackedIface, type); 4387 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4388 } 4389 } catch (RemoteException ignored) { 4390 } 4391 4392 // This has to happen after the notifyNetworkCallbacks as that tickles each 4393 // ConnectivityManager instance so that legacy requests correctly bind dns 4394 // requests to this network. The legacy users are listening for this bcast 4395 // and will generally do a dns request so they can ensureRouteToHost and if 4396 // they do that before the callbacks happen they'll use the default network. 4397 // 4398 // TODO: Is there still a race here? We send the broadcast 4399 // after sending the callback, but if the app can receive the 4400 // broadcast before the callback, it might still break. 4401 // 4402 // This *does* introduce a race where if the user uses the new api 4403 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4404 // they may get old info. Reverse this after the old startUsing api is removed. 4405 // This is on top of the multiple intent sequencing referenced in the todo above. 4406 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4407 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4408 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4409 // legacy type tracker filters out repeat adds 4410 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4411 } 4412 } 4413 4414 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4415 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4416 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4417 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4418 if (newNetwork.isVPN()) { 4419 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4420 } 4421 } else if (nascent == NascentState.JUST_VALIDATED) { 4422 // Only tear down newly validated networks here. Leave unvalidated to either become 4423 // validated (and get evaluated against peers, one losing here), or get reaped (see 4424 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4425 // network. Networks that have been up for a while and are validated should be torn 4426 // down via the lingering process so communication on that network is given time to 4427 // wrap up. 4428 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4429 teardownUnneededNetwork(newNetwork); 4430 } 4431 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4432 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4433 if (!nai.everValidated && unneeded(nai)) { 4434 if (DBG) log("Reaping " + nai.name()); 4435 teardownUnneededNetwork(nai); 4436 } 4437 } 4438 } 4439 } 4440 4441 /** 4442 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4443 * being disconnected. 4444 * @param changed If only one Network's score or capabilities have been modified since the last 4445 * time this function was called, pass this Network in this argument, otherwise pass 4446 * null. 4447 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4448 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4449 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4450 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4451 * network's score. 4452 * @param nascent indicates if {@code changed} has just been validated. 4453 */ 4454 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore, 4455 NascentState nascent) { 4456 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4457 // to avoid the slowness. It is not simply enough to process just "changed", for 4458 // example in the case where "changed"'s score decreases and another network should begin 4459 // satifying a NetworkRequest that "changed" currently satisfies. 4460 4461 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4462 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4463 // rematchNetworkAndRequests() handles. 4464 if (changed != null && 4465 (oldScore < changed.getCurrentScore() || nascent == NascentState.JUST_VALIDATED)) { 4466 rematchNetworkAndRequests(changed, nascent, ReapUnvalidatedNetworks.REAP); 4467 } else { 4468 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4469 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4470 NascentState.NOT_JUST_VALIDATED, 4471 // Only reap the last time through the loop. Reaping before all rematching 4472 // is complete could incorrectly teardown a network that hasn't yet been 4473 // rematched. 4474 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4475 : ReapUnvalidatedNetworks.REAP); 4476 } 4477 } 4478 } 4479 4480 private void updateInetCondition(NetworkAgentInfo nai) { 4481 // Don't bother updating until we've graduated to validated at least once. 4482 if (!nai.everValidated) return; 4483 // For now only update icons for default connection. 4484 // TODO: Update WiFi and cellular icons separately. b/17237507 4485 if (!isDefaultNetwork(nai)) return; 4486 4487 int newInetCondition = nai.lastValidated ? 100 : 0; 4488 // Don't repeat publish. 4489 if (newInetCondition == mDefaultInetConditionPublished) return; 4490 4491 mDefaultInetConditionPublished = newInetCondition; 4492 sendInetConditionBroadcast(nai.networkInfo); 4493 } 4494 4495 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4496 if (mLockdownTracker != null) { 4497 if (nai != null && nai.isVPN()) { 4498 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4499 } else { 4500 mLockdownTracker.onNetworkInfoChanged(); 4501 } 4502 } 4503 } 4504 4505 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4506 NetworkInfo.State state = newInfo.getState(); 4507 NetworkInfo oldInfo = null; 4508 synchronized (networkAgent) { 4509 oldInfo = networkAgent.networkInfo; 4510 networkAgent.networkInfo = newInfo; 4511 } 4512 notifyLockdownVpn(networkAgent); 4513 4514 if (oldInfo != null && oldInfo.getState() == state) { 4515 if (VDBG) log("ignoring duplicate network state non-change"); 4516 return; 4517 } 4518 if (DBG) { 4519 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4520 (oldInfo == null ? "null" : oldInfo.getState()) + 4521 " to " + state); 4522 } 4523 4524 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4525 try { 4526 // This should never fail. Specifying an already in use NetID will cause failure. 4527 if (networkAgent.isVPN()) { 4528 mNetd.createVirtualNetwork(networkAgent.network.netId, 4529 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4530 (networkAgent.networkMisc == null || 4531 !networkAgent.networkMisc.allowBypass)); 4532 } else { 4533 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4534 } 4535 } catch (Exception e) { 4536 loge("Error creating network " + networkAgent.network.netId + ": " 4537 + e.getMessage()); 4538 return; 4539 } 4540 networkAgent.created = true; 4541 updateLinkProperties(networkAgent, null); 4542 notifyIfacesChanged(); 4543 4544 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4545 scheduleUnvalidatedPrompt(networkAgent); 4546 4547 if (networkAgent.isVPN()) { 4548 // Temporarily disable the default proxy (not global). 4549 synchronized (mProxyLock) { 4550 if (!mDefaultProxyDisabled) { 4551 mDefaultProxyDisabled = true; 4552 if (mGlobalProxy == null && mDefaultProxy != null) { 4553 sendProxyBroadcast(null); 4554 } 4555 } 4556 } 4557 // TODO: support proxy per network. 4558 } 4559 4560 // Consider network even though it is not yet validated. 4561 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4562 ReapUnvalidatedNetworks.REAP); 4563 4564 // This has to happen after matching the requests, because callbacks are just requests. 4565 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4566 } else if (state == NetworkInfo.State.DISCONNECTED || 4567 state == NetworkInfo.State.SUSPENDED) { 4568 networkAgent.asyncChannel.disconnect(); 4569 if (networkAgent.isVPN()) { 4570 synchronized (mProxyLock) { 4571 if (mDefaultProxyDisabled) { 4572 mDefaultProxyDisabled = false; 4573 if (mGlobalProxy == null && mDefaultProxy != null) { 4574 sendProxyBroadcast(mDefaultProxy); 4575 } 4576 } 4577 } 4578 } 4579 } 4580 } 4581 4582 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4583 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4584 if (score < 0) { 4585 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4586 "). Bumping score to min of 0"); 4587 score = 0; 4588 } 4589 4590 final int oldScore = nai.getCurrentScore(); 4591 nai.setCurrentScore(score); 4592 4593 rematchAllNetworksAndRequests(nai, oldScore, NascentState.NOT_JUST_VALIDATED); 4594 4595 sendUpdatedScoreToFactories(nai); 4596 } 4597 4598 // notify only this one new request of the current state 4599 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4600 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4601 // TODO - read state from monitor to decide what to send. 4602// if (nai.networkMonitor.isLingering()) { 4603// notifyType = NetworkCallbacks.LOSING; 4604// } else if (nai.networkMonitor.isEvaluating()) { 4605// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4606// } 4607 if (nri.mPendingIntent == null) { 4608 callCallbackForRequest(nri, nai, notifyType); 4609 } else { 4610 sendPendingIntentForRequest(nri, nai, notifyType); 4611 } 4612 } 4613 4614 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4615 // The NetworkInfo we actually send out has no bearing on the real 4616 // state of affairs. For example, if the default connection is mobile, 4617 // and a request for HIPRI has just gone away, we need to pretend that 4618 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4619 // the state to DISCONNECTED, even though the network is of type MOBILE 4620 // and is still connected. 4621 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4622 info.setType(type); 4623 if (connected) { 4624 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4625 sendConnectedBroadcast(info); 4626 } else { 4627 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4628 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4629 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4630 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4631 if (info.isFailover()) { 4632 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4633 nai.networkInfo.setFailover(false); 4634 } 4635 if (info.getReason() != null) { 4636 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4637 } 4638 if (info.getExtraInfo() != null) { 4639 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4640 } 4641 NetworkAgentInfo newDefaultAgent = null; 4642 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4643 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4644 if (newDefaultAgent != null) { 4645 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4646 newDefaultAgent.networkInfo); 4647 } else { 4648 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4649 } 4650 } 4651 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4652 mDefaultInetConditionPublished); 4653 sendStickyBroadcast(intent); 4654 if (newDefaultAgent != null) { 4655 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4656 } 4657 } 4658 } 4659 4660 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4661 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4662 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4663 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4664 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4665 if (VDBG) log(" sending notification for " + nr); 4666 if (nri.mPendingIntent == null) { 4667 callCallbackForRequest(nri, networkAgent, notifyType); 4668 } else { 4669 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4670 } 4671 } 4672 } 4673 4674 private String notifyTypeToName(int notifyType) { 4675 switch (notifyType) { 4676 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4677 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4678 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4679 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4680 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4681 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4682 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4683 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4684 } 4685 return "UNKNOWN"; 4686 } 4687 4688 /** 4689 * Notify other system services that set of active ifaces has changed. 4690 */ 4691 private void notifyIfacesChanged() { 4692 try { 4693 mStatsService.forceUpdateIfaces(); 4694 } catch (Exception ignored) { 4695 } 4696 } 4697 4698 @Override 4699 public boolean addVpnAddress(String address, int prefixLength) { 4700 throwIfLockdownEnabled(); 4701 int user = UserHandle.getUserId(Binder.getCallingUid()); 4702 synchronized (mVpns) { 4703 return mVpns.get(user).addAddress(address, prefixLength); 4704 } 4705 } 4706 4707 @Override 4708 public boolean removeVpnAddress(String address, int prefixLength) { 4709 throwIfLockdownEnabled(); 4710 int user = UserHandle.getUserId(Binder.getCallingUid()); 4711 synchronized (mVpns) { 4712 return mVpns.get(user).removeAddress(address, prefixLength); 4713 } 4714 } 4715 4716 @Override 4717 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4718 throwIfLockdownEnabled(); 4719 int user = UserHandle.getUserId(Binder.getCallingUid()); 4720 boolean success; 4721 synchronized (mVpns) { 4722 success = mVpns.get(user).setUnderlyingNetworks(networks); 4723 } 4724 if (success) { 4725 notifyIfacesChanged(); 4726 } 4727 return success; 4728 } 4729 4730 @Override 4731 public void factoryReset() { 4732 enforceConnectivityInternalPermission(); 4733 4734 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4735 return; 4736 } 4737 4738 final int userId = UserHandle.getCallingUserId(); 4739 4740 // Turn airplane mode off 4741 setAirplaneMode(false); 4742 4743 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4744 // Untether 4745 for (String tether : getTetheredIfaces()) { 4746 untether(tether); 4747 } 4748 } 4749 4750 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4751 // Turn VPN off 4752 VpnConfig vpnConfig = getVpnConfig(userId); 4753 if (vpnConfig != null) { 4754 if (vpnConfig.legacy) { 4755 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4756 } else { 4757 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4758 // in the future without user intervention. 4759 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4760 4761 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4762 } 4763 } 4764 } 4765 } 4766} 4767