ConnectivityService.java revision 76f67797032981ccb63e12e808ebc8bda636a740
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 30import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 31import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 33 34import android.annotation.Nullable; 35import android.app.AlarmManager; 36import android.app.Notification; 37import android.app.NotificationManager; 38import android.app.PendingIntent; 39import android.content.BroadcastReceiver; 40import android.content.ContentResolver; 41import android.content.Context; 42import android.content.Intent; 43import android.content.IntentFilter; 44import android.content.pm.PackageManager; 45import android.content.res.Configuration; 46import android.content.res.Resources; 47import android.database.ContentObserver; 48import android.net.ConnectivityManager; 49import android.net.IConnectivityManager; 50import android.net.INetworkManagementEventObserver; 51import android.net.INetworkPolicyListener; 52import android.net.INetworkPolicyManager; 53import android.net.INetworkStatsService; 54import android.net.LinkProperties; 55import android.net.LinkProperties.CompareResult; 56import android.net.Network; 57import android.net.NetworkAgent; 58import android.net.NetworkCapabilities; 59import android.net.NetworkConfig; 60import android.net.NetworkInfo; 61import android.net.NetworkInfo.DetailedState; 62import android.net.NetworkMisc; 63import android.net.NetworkQuotaInfo; 64import android.net.NetworkRequest; 65import android.net.NetworkState; 66import android.net.NetworkUtils; 67import android.net.Proxy; 68import android.net.ProxyInfo; 69import android.net.RouteInfo; 70import android.net.UidRange; 71import android.net.Uri; 72import android.os.Binder; 73import android.os.Bundle; 74import android.os.FileUtils; 75import android.os.Handler; 76import android.os.HandlerThread; 77import android.os.IBinder; 78import android.os.INetworkManagementService; 79import android.os.Looper; 80import android.os.Message; 81import android.os.Messenger; 82import android.os.ParcelFileDescriptor; 83import android.os.PowerManager; 84import android.os.Process; 85import android.os.RemoteException; 86import android.os.SystemClock; 87import android.os.SystemProperties; 88import android.os.UserHandle; 89import android.os.UserManager; 90import android.provider.Settings; 91import android.security.Credentials; 92import android.security.KeyStore; 93import android.telephony.TelephonyManager; 94import android.text.TextUtils; 95import android.util.Slog; 96import android.util.SparseArray; 97import android.util.SparseBooleanArray; 98import android.util.SparseIntArray; 99import android.util.Xml; 100 101import com.android.internal.R; 102import com.android.internal.annotations.GuardedBy; 103import com.android.internal.app.IBatteryStats; 104import com.android.internal.net.LegacyVpnInfo; 105import com.android.internal.net.NetworkStatsFactory; 106import com.android.internal.net.VpnConfig; 107import com.android.internal.net.VpnInfo; 108import com.android.internal.net.VpnProfile; 109import com.android.internal.telephony.DctConstants; 110import com.android.internal.util.AsyncChannel; 111import com.android.internal.util.IndentingPrintWriter; 112import com.android.internal.util.XmlUtils; 113import com.android.server.am.BatteryStatsService; 114import com.android.server.connectivity.DataConnectionStats; 115import com.android.server.connectivity.Nat464Xlat; 116import com.android.server.connectivity.NetworkAgentInfo; 117import com.android.server.connectivity.NetworkMonitor; 118import com.android.server.connectivity.PacManager; 119import com.android.server.connectivity.PermissionMonitor; 120import com.android.server.connectivity.Tethering; 121import com.android.server.connectivity.Vpn; 122import com.android.server.net.BaseNetworkObserver; 123import com.android.server.net.LockdownVpnTracker; 124import com.google.android.collect.Lists; 125import com.google.android.collect.Sets; 126 127import org.xmlpull.v1.XmlPullParser; 128import org.xmlpull.v1.XmlPullParserException; 129 130import java.io.File; 131import java.io.FileDescriptor; 132import java.io.FileNotFoundException; 133import java.io.FileReader; 134import java.io.IOException; 135import java.io.PrintWriter; 136import java.net.Inet4Address; 137import java.net.InetAddress; 138import java.net.UnknownHostException; 139import java.util.ArrayList; 140import java.util.Arrays; 141import java.util.Collection; 142import java.util.HashMap; 143import java.util.HashSet; 144import java.util.Iterator; 145import java.util.List; 146import java.util.Map; 147import java.util.Objects; 148import java.util.concurrent.atomic.AtomicInteger; 149 150/** 151 * @hide 152 */ 153public class ConnectivityService extends IConnectivityManager.Stub 154 implements PendingIntent.OnFinished { 155 private static final String TAG = "ConnectivityService"; 156 157 private static final boolean DBG = true; 158 private static final boolean VDBG = false; 159 160 private static final boolean LOGD_RULES = false; 161 162 // TODO: create better separation between radio types and network types 163 164 // how long to wait before switching back to a radio's default network 165 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 166 // system property that can override the above value 167 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 168 "android.telephony.apn-restore"; 169 170 // How long to wait before putting up a "This network doesn't have an Internet connection, 171 // connect anyway?" dialog after the user selects a network that doesn't validate. 172 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 173 174 // How long to delay to removal of a pending intent based request. 175 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 176 private final int mReleasePendingIntentDelayMs; 177 178 private Tethering mTethering; 179 180 private final PermissionMonitor mPermissionMonitor; 181 182 private KeyStore mKeyStore; 183 184 @GuardedBy("mVpns") 185 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 186 187 private boolean mLockdownEnabled; 188 private LockdownVpnTracker mLockdownTracker; 189 190 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 191 private Object mRulesLock = new Object(); 192 /** Currently active network rules by UID. */ 193 private SparseIntArray mUidRules = new SparseIntArray(); 194 /** Set of ifaces that are costly. */ 195 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 196 197 final private Context mContext; 198 private int mNetworkPreference; 199 // 0 is full bad, 100 is full good 200 private int mDefaultInetConditionPublished = 0; 201 202 private Object mDnsLock = new Object(); 203 private int mNumDnsEntries; 204 205 private boolean mTestMode; 206 private static ConnectivityService sServiceInstance; 207 208 private INetworkManagementService mNetd; 209 private INetworkStatsService mStatsService; 210 private INetworkPolicyManager mPolicyManager; 211 212 private String mCurrentTcpBufferSizes; 213 214 private static final int ENABLED = 1; 215 private static final int DISABLED = 0; 216 217 // Arguments to rematchNetworkAndRequests() 218 private enum NascentState { 219 // Indicates a network was just validated for the first time. If the network is found to 220 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 221 JUST_VALIDATED, 222 // Indicates a network was not validated for the first time immediately prior to this call. 223 NOT_JUST_VALIDATED 224 }; 225 private enum ReapUnvalidatedNetworks { 226 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 227 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 228 // known that there may be unvalidated networks that could potentially be reaped, and when 229 // all networks have been rematched against all NetworkRequests. 230 REAP, 231 // Don't reap unvalidated networks. This should be passed when it's known that there are 232 // no unvalidated networks that could potentially be reaped, and when some networks have 233 // not yet been rematched against all NetworkRequests. 234 DONT_REAP 235 }; 236 237 /** 238 * used internally to change our mobile data enabled flag 239 */ 240 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 241 242 /** 243 * used internally to clear a wakelock when transitioning 244 * from one net to another. Clear happens when we get a new 245 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 246 * after a timeout if no network is found (typically 1 min). 247 */ 248 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 249 250 /** 251 * used internally to reload global proxy settings 252 */ 253 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 254 255 /** 256 * used internally to send a sticky broadcast delayed. 257 */ 258 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 259 260 /** 261 * PAC manager has received new port. 262 */ 263 private static final int EVENT_PROXY_HAS_CHANGED = 16; 264 265 /** 266 * used internally when registering NetworkFactories 267 * obj = NetworkFactoryInfo 268 */ 269 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 270 271 /** 272 * used internally when registering NetworkAgents 273 * obj = Messenger 274 */ 275 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 276 277 /** 278 * used to add a network request 279 * includes a NetworkRequestInfo 280 */ 281 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 282 283 /** 284 * indicates a timeout period is over - check if we had a network yet or not 285 * and if not, call the timeout calback (but leave the request live until they 286 * cancel it. 287 * includes a NetworkRequestInfo 288 */ 289 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 290 291 /** 292 * used to add a network listener - no request 293 * includes a NetworkRequestInfo 294 */ 295 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 296 297 /** 298 * used to remove a network request, either a listener or a real request 299 * arg1 = UID of caller 300 * obj = NetworkRequest 301 */ 302 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 303 304 /** 305 * used internally when registering NetworkFactories 306 * obj = Messenger 307 */ 308 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 309 310 /** 311 * used internally to expire a wakelock when transitioning 312 * from one net to another. Expire happens when we fail to find 313 * a new network (typically after 1 minute) - 314 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 315 * a replacement network. 316 */ 317 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 318 319 /** 320 * Used internally to indicate the system is ready. 321 */ 322 private static final int EVENT_SYSTEM_READY = 25; 323 324 /** 325 * used to add a network request with a pending intent 326 * includes a NetworkRequestInfo 327 */ 328 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 329 330 /** 331 * used to remove a pending intent and its associated network request. 332 * arg1 = UID of caller 333 * obj = PendingIntent 334 */ 335 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 336 337 /** 338 * used to specify whether a network should be used even if unvalidated. 339 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 340 * arg2 = whether to remember this choice in the future (1 or 0) 341 * obj = network 342 */ 343 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 344 345 /** 346 * used to ask the user to confirm a connection to an unvalidated network. 347 * obj = network 348 */ 349 private static final int EVENT_PROMPT_UNVALIDATED = 29; 350 351 /** 352 * used internally to (re)configure mobile data always-on settings. 353 */ 354 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 355 356 /** Handler used for internal events. */ 357 final private InternalHandler mHandler; 358 /** Handler used for incoming {@link NetworkStateTracker} events. */ 359 final private NetworkStateTrackerHandler mTrackerHandler; 360 361 private boolean mSystemReady; 362 private Intent mInitialBroadcast; 363 364 private PowerManager.WakeLock mNetTransitionWakeLock; 365 private String mNetTransitionWakeLockCausedBy = ""; 366 private int mNetTransitionWakeLockSerialNumber; 367 private int mNetTransitionWakeLockTimeout; 368 private final PowerManager.WakeLock mPendingIntentWakeLock; 369 370 private InetAddress mDefaultDns; 371 372 // used in DBG mode to track inet condition reports 373 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 374 private ArrayList mInetLog; 375 376 // track the current default http proxy - tell the world if we get a new one (real change) 377 private volatile ProxyInfo mDefaultProxy = null; 378 private Object mProxyLock = new Object(); 379 private boolean mDefaultProxyDisabled = false; 380 381 // track the global proxy. 382 private ProxyInfo mGlobalProxy = null; 383 384 private PacManager mPacManager = null; 385 386 final private SettingsObserver mSettingsObserver; 387 388 private UserManager mUserManager; 389 390 NetworkConfig[] mNetConfigs; 391 int mNetworksDefined; 392 393 // the set of network types that can only be enabled by system/sig apps 394 List mProtectedNetworks; 395 396 private DataConnectionStats mDataConnectionStats; 397 398 TelephonyManager mTelephonyManager; 399 400 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 401 private final static int MIN_NET_ID = 100; // some reserved marks 402 private final static int MAX_NET_ID = 65535; 403 private int mNextNetId = MIN_NET_ID; 404 405 // sequence number of NetworkRequests 406 private int mNextNetworkRequestId = 1; 407 408 /** 409 * Implements support for the legacy "one network per network type" model. 410 * 411 * We used to have a static array of NetworkStateTrackers, one for each 412 * network type, but that doesn't work any more now that we can have, 413 * for example, more that one wifi network. This class stores all the 414 * NetworkAgentInfo objects that support a given type, but the legacy 415 * API will only see the first one. 416 * 417 * It serves two main purposes: 418 * 419 * 1. Provide information about "the network for a given type" (since this 420 * API only supports one). 421 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 422 * the first network for a given type changes, or if the default network 423 * changes. 424 */ 425 private class LegacyTypeTracker { 426 427 private static final boolean DBG = true; 428 private static final boolean VDBG = false; 429 private static final String TAG = "CSLegacyTypeTracker"; 430 431 /** 432 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 433 * Each list holds references to all NetworkAgentInfos that are used to 434 * satisfy requests for that network type. 435 * 436 * This array is built out at startup such that an unsupported network 437 * doesn't get an ArrayList instance, making this a tristate: 438 * unsupported, supported but not active and active. 439 * 440 * The actual lists are populated when we scan the network types that 441 * are supported on this device. 442 */ 443 private ArrayList<NetworkAgentInfo> mTypeLists[]; 444 445 public LegacyTypeTracker() { 446 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 447 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 448 } 449 450 public void addSupportedType(int type) { 451 if (mTypeLists[type] != null) { 452 throw new IllegalStateException( 453 "legacy list for type " + type + "already initialized"); 454 } 455 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 456 } 457 458 public boolean isTypeSupported(int type) { 459 return isNetworkTypeValid(type) && mTypeLists[type] != null; 460 } 461 462 public NetworkAgentInfo getNetworkForType(int type) { 463 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 464 return mTypeLists[type].get(0); 465 } else { 466 return null; 467 } 468 } 469 470 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 471 boolean isDefaultNetwork) { 472 if (DBG) { 473 log("Sending " + (connected ? "connected" : "disconnected") + 474 " broadcast for type " + type + " " + nai.name() + 475 " isDefaultNetwork=" + isDefaultNetwork); 476 } 477 } 478 479 /** Adds the given network to the specified legacy type list. */ 480 public void add(int type, NetworkAgentInfo nai) { 481 if (!isTypeSupported(type)) { 482 return; // Invalid network type. 483 } 484 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 485 486 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 487 if (list.contains(nai)) { 488 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 489 return; 490 } 491 492 list.add(nai); 493 494 // Send a broadcast if this is the first network of its type or if it's the default. 495 final boolean isDefaultNetwork = isDefaultNetwork(nai); 496 if (list.size() == 1 || isDefaultNetwork) { 497 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 498 sendLegacyNetworkBroadcast(nai, true, type); 499 } 500 } 501 502 /** Removes the given network from the specified legacy type list. */ 503 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 504 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 505 if (list == null || list.isEmpty()) { 506 return; 507 } 508 509 final boolean wasFirstNetwork = list.get(0).equals(nai); 510 511 if (!list.remove(nai)) { 512 return; 513 } 514 515 if (wasFirstNetwork || wasDefault) { 516 maybeLogBroadcast(nai, false, type, wasDefault); 517 sendLegacyNetworkBroadcast(nai, false, type); 518 } 519 520 if (!list.isEmpty() && wasFirstNetwork) { 521 if (DBG) log("Other network available for type " + type + 522 ", sending connected broadcast"); 523 final NetworkAgentInfo replacement = list.get(0); 524 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 525 sendLegacyNetworkBroadcast(replacement, false, type); 526 } 527 } 528 529 /** Removes the given network from all legacy type lists. */ 530 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 531 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 532 for (int type = 0; type < mTypeLists.length; type++) { 533 remove(type, nai, wasDefault); 534 } 535 } 536 537 private String naiToString(NetworkAgentInfo nai) { 538 String name = (nai != null) ? nai.name() : "null"; 539 String state = (nai.networkInfo != null) ? 540 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 541 "???/???"; 542 return name + " " + state; 543 } 544 545 public void dump(IndentingPrintWriter pw) { 546 for (int type = 0; type < mTypeLists.length; type++) { 547 if (mTypeLists[type] == null) continue; 548 pw.print(type + " "); 549 pw.increaseIndent(); 550 if (mTypeLists[type].size() == 0) pw.println("none"); 551 for (NetworkAgentInfo nai : mTypeLists[type]) { 552 pw.println(naiToString(nai)); 553 } 554 pw.decreaseIndent(); 555 } 556 } 557 558 // This class needs its own log method because it has a different TAG. 559 private void log(String s) { 560 Slog.d(TAG, s); 561 } 562 563 } 564 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 565 566 public ConnectivityService(Context context, INetworkManagementService netManager, 567 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 568 if (DBG) log("ConnectivityService starting up"); 569 570 mDefaultRequest = createInternetRequestForTransport(-1); 571 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 572 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 573 574 mDefaultMobileDataRequest = createInternetRequestForTransport( 575 NetworkCapabilities.TRANSPORT_CELLULAR); 576 577 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 578 handlerThread.start(); 579 mHandler = new InternalHandler(handlerThread.getLooper()); 580 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 581 582 // setup our unique device name 583 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 584 String id = Settings.Secure.getString(context.getContentResolver(), 585 Settings.Secure.ANDROID_ID); 586 if (id != null && id.length() > 0) { 587 String name = new String("android-").concat(id); 588 SystemProperties.set("net.hostname", name); 589 } 590 } 591 592 // read our default dns server ip 593 String dns = Settings.Global.getString(context.getContentResolver(), 594 Settings.Global.DEFAULT_DNS_SERVER); 595 if (dns == null || dns.length() == 0) { 596 dns = context.getResources().getString( 597 com.android.internal.R.string.config_default_dns_server); 598 } 599 try { 600 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 601 } catch (IllegalArgumentException e) { 602 loge("Error setting defaultDns using " + dns); 603 } 604 605 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 606 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 607 608 mContext = checkNotNull(context, "missing Context"); 609 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 610 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 611 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 612 mKeyStore = KeyStore.getInstance(); 613 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 614 615 try { 616 mPolicyManager.registerListener(mPolicyListener); 617 } catch (RemoteException e) { 618 // ouch, no rules updates means some processes may never get network 619 loge("unable to register INetworkPolicyListener" + e.toString()); 620 } 621 622 final PowerManager powerManager = (PowerManager) context.getSystemService( 623 Context.POWER_SERVICE); 624 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 625 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 626 com.android.internal.R.integer.config_networkTransitionTimeout); 627 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 628 629 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 630 631 // TODO: What is the "correct" way to do determine if this is a wifi only device? 632 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 633 log("wifiOnly=" + wifiOnly); 634 String[] naStrings = context.getResources().getStringArray( 635 com.android.internal.R.array.networkAttributes); 636 for (String naString : naStrings) { 637 try { 638 NetworkConfig n = new NetworkConfig(naString); 639 if (VDBG) log("naString=" + naString + " config=" + n); 640 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 641 loge("Error in networkAttributes - ignoring attempt to define type " + 642 n.type); 643 continue; 644 } 645 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 646 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 647 n.type); 648 continue; 649 } 650 if (mNetConfigs[n.type] != null) { 651 loge("Error in networkAttributes - ignoring attempt to redefine type " + 652 n.type); 653 continue; 654 } 655 mLegacyTypeTracker.addSupportedType(n.type); 656 657 mNetConfigs[n.type] = n; 658 mNetworksDefined++; 659 } catch(Exception e) { 660 // ignore it - leave the entry null 661 } 662 } 663 664 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 665 if (mNetConfigs[TYPE_VPN] == null) { 666 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 667 // don't need to add TYPE_VPN to mNetConfigs. 668 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 669 mNetworksDefined++; // used only in the log() statement below. 670 } 671 672 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 673 674 mProtectedNetworks = new ArrayList<Integer>(); 675 int[] protectedNetworks = context.getResources().getIntArray( 676 com.android.internal.R.array.config_protectedNetworks); 677 for (int p : protectedNetworks) { 678 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 679 mProtectedNetworks.add(p); 680 } else { 681 if (DBG) loge("Ignoring protectedNetwork " + p); 682 } 683 } 684 685 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 686 && SystemProperties.get("ro.build.type").equals("eng"); 687 688 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 689 690 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 691 692 //set up the listener for user state for creating user VPNs 693 IntentFilter intentFilter = new IntentFilter(); 694 intentFilter.addAction(Intent.ACTION_USER_STARTING); 695 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 696 mContext.registerReceiverAsUser( 697 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 698 699 try { 700 mNetd.registerObserver(mTethering); 701 mNetd.registerObserver(mDataActivityObserver); 702 } catch (RemoteException e) { 703 loge("Error registering observer :" + e); 704 } 705 706 if (DBG) { 707 mInetLog = new ArrayList(); 708 } 709 710 mSettingsObserver = new SettingsObserver(mContext, mHandler); 711 registerSettingsCallbacks(); 712 713 mDataConnectionStats = new DataConnectionStats(mContext); 714 mDataConnectionStats.startMonitoring(); 715 716 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 717 718 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 719 } 720 721 private NetworkRequest createInternetRequestForTransport(int transportType) { 722 NetworkCapabilities netCap = new NetworkCapabilities(); 723 netCap.addCapability(NET_CAPABILITY_INTERNET); 724 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 725 if (transportType > -1) { 726 netCap.addTransportType(transportType); 727 } 728 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 729 } 730 731 private void handleMobileDataAlwaysOn() { 732 final boolean enable = (Settings.Global.getInt( 733 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 734 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 735 if (enable == isEnabled) { 736 return; // Nothing to do. 737 } 738 739 if (enable) { 740 handleRegisterNetworkRequest(new NetworkRequestInfo( 741 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 742 } else { 743 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 744 } 745 } 746 747 private void registerSettingsCallbacks() { 748 // Watch for global HTTP proxy changes. 749 mSettingsObserver.observe( 750 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 751 EVENT_APPLY_GLOBAL_HTTP_PROXY); 752 753 // Watch for whether or not to keep mobile data always on. 754 mSettingsObserver.observe( 755 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 756 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 757 } 758 759 private synchronized int nextNetworkRequestId() { 760 return mNextNetworkRequestId++; 761 } 762 763 private int reserveNetId() { 764 synchronized (mNetworkForNetId) { 765 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 766 int netId = mNextNetId; 767 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 768 // Make sure NetID unused. http://b/16815182 769 if (!mNetIdInUse.get(netId)) { 770 mNetIdInUse.put(netId, true); 771 return netId; 772 } 773 } 774 } 775 throw new IllegalStateException("No free netIds"); 776 } 777 778 private NetworkState getFilteredNetworkState(int networkType, int uid) { 779 NetworkInfo info = null; 780 LinkProperties lp = null; 781 NetworkCapabilities nc = null; 782 Network network = null; 783 String subscriberId = null; 784 785 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 786 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 787 if (nai != null) { 788 synchronized (nai) { 789 info = new NetworkInfo(nai.networkInfo); 790 lp = new LinkProperties(nai.linkProperties); 791 nc = new NetworkCapabilities(nai.networkCapabilities); 792 // Network objects are outwardly immutable so there is no point to duplicating. 793 // Duplicating also precludes sharing socket factories and connection pools. 794 network = nai.network; 795 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 796 } 797 info.setType(networkType); 798 } else { 799 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 800 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 801 info.setIsAvailable(true); 802 lp = new LinkProperties(); 803 nc = new NetworkCapabilities(); 804 network = null; 805 } 806 info = getFilteredNetworkInfo(info, lp, uid); 807 } 808 809 return new NetworkState(info, lp, nc, network, subscriberId, null); 810 } 811 812 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 813 if (network == null) { 814 return null; 815 } 816 synchronized (mNetworkForNetId) { 817 return mNetworkForNetId.get(network.netId); 818 } 819 }; 820 821 private Network[] getVpnUnderlyingNetworks(int uid) { 822 if (!mLockdownEnabled) { 823 int user = UserHandle.getUserId(uid); 824 synchronized (mVpns) { 825 Vpn vpn = mVpns.get(user); 826 if (vpn != null && vpn.appliesToUid(uid)) { 827 return vpn.getUnderlyingNetworks(); 828 } 829 } 830 } 831 return null; 832 } 833 834 private NetworkState getUnfilteredActiveNetworkState(int uid) { 835 NetworkInfo info = null; 836 LinkProperties lp = null; 837 NetworkCapabilities nc = null; 838 Network network = null; 839 String subscriberId = null; 840 841 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 842 843 final Network[] networks = getVpnUnderlyingNetworks(uid); 844 if (networks != null) { 845 // getUnderlyingNetworks() returns: 846 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 847 // empty array => the VPN explicitly said "no default network". 848 // non-empty array => the VPN specified one or more default networks; we use the 849 // first one. 850 if (networks.length > 0) { 851 nai = getNetworkAgentInfoForNetwork(networks[0]); 852 } else { 853 nai = null; 854 } 855 } 856 857 if (nai != null) { 858 synchronized (nai) { 859 info = new NetworkInfo(nai.networkInfo); 860 lp = new LinkProperties(nai.linkProperties); 861 nc = new NetworkCapabilities(nai.networkCapabilities); 862 // Network objects are outwardly immutable so there is no point to duplicating. 863 // Duplicating also precludes sharing socket factories and connection pools. 864 network = nai.network; 865 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 866 } 867 } 868 869 return new NetworkState(info, lp, nc, network, subscriberId, null); 870 } 871 872 /** 873 * Check if UID should be blocked from using the network with the given LinkProperties. 874 */ 875 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 876 final boolean networkCostly; 877 final int uidRules; 878 879 final String iface = (lp == null ? "" : lp.getInterfaceName()); 880 synchronized (mRulesLock) { 881 networkCostly = mMeteredIfaces.contains(iface); 882 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 883 } 884 885 if ((uidRules & RULE_REJECT_ALL) != 0 886 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 887 return true; 888 } 889 890 // no restrictive rules; network is visible 891 return false; 892 } 893 894 /** 895 * Return a filtered {@link NetworkInfo}, potentially marked 896 * {@link DetailedState#BLOCKED} based on 897 * {@link #isNetworkWithLinkPropertiesBlocked}. 898 */ 899 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 900 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 901 // network is blocked; clone and override state 902 info = new NetworkInfo(info); 903 info.setDetailedState(DetailedState.BLOCKED, null, null); 904 if (DBG) { 905 log("returning Blocked NetworkInfo for ifname=" + 906 lp.getInterfaceName() + ", uid=" + uid); 907 } 908 } 909 if (info != null && mLockdownTracker != null) { 910 info = mLockdownTracker.augmentNetworkInfo(info); 911 if (DBG) log("returning Locked NetworkInfo"); 912 } 913 return info; 914 } 915 916 /** 917 * Return NetworkInfo for the active (i.e., connected) network interface. 918 * It is assumed that at most one network is active at a time. If more 919 * than one is active, it is indeterminate which will be returned. 920 * @return the info for the active network, or {@code null} if none is 921 * active 922 */ 923 @Override 924 public NetworkInfo getActiveNetworkInfo() { 925 enforceAccessPermission(); 926 final int uid = Binder.getCallingUid(); 927 NetworkState state = getUnfilteredActiveNetworkState(uid); 928 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 929 } 930 931 @Override 932 public Network getActiveNetwork() { 933 enforceAccessPermission(); 934 final int uid = Binder.getCallingUid(); 935 final int user = UserHandle.getUserId(uid); 936 int vpnNetId = NETID_UNSET; 937 synchronized (mVpns) { 938 final Vpn vpn = mVpns.get(user); 939 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 940 } 941 NetworkAgentInfo nai; 942 if (vpnNetId != NETID_UNSET) { 943 synchronized (mNetworkForNetId) { 944 nai = mNetworkForNetId.get(vpnNetId); 945 } 946 if (nai != null) return nai.network; 947 } 948 nai = getDefaultNetwork(); 949 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 950 return nai != null ? nai.network : null; 951 } 952 953 /** 954 * Find the first Provisioning network. 955 * 956 * @return NetworkInfo or null if none. 957 */ 958 private NetworkInfo getProvisioningNetworkInfo() { 959 enforceAccessPermission(); 960 961 // Find the first Provisioning Network 962 NetworkInfo provNi = null; 963 for (NetworkInfo ni : getAllNetworkInfo()) { 964 if (ni.isConnectedToProvisioningNetwork()) { 965 provNi = ni; 966 break; 967 } 968 } 969 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 970 return provNi; 971 } 972 973 /** 974 * Find the first Provisioning network or the ActiveDefaultNetwork 975 * if there is no Provisioning network 976 * 977 * @return NetworkInfo or null if none. 978 */ 979 @Override 980 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 981 enforceAccessPermission(); 982 983 NetworkInfo provNi = getProvisioningNetworkInfo(); 984 if (provNi == null) { 985 provNi = getActiveNetworkInfo(); 986 } 987 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 988 return provNi; 989 } 990 991 public NetworkInfo getActiveNetworkInfoUnfiltered() { 992 enforceAccessPermission(); 993 final int uid = Binder.getCallingUid(); 994 NetworkState state = getUnfilteredActiveNetworkState(uid); 995 return state.networkInfo; 996 } 997 998 @Override 999 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1000 enforceConnectivityInternalPermission(); 1001 NetworkState state = getUnfilteredActiveNetworkState(uid); 1002 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1003 } 1004 1005 @Override 1006 public NetworkInfo getNetworkInfo(int networkType) { 1007 enforceAccessPermission(); 1008 final int uid = Binder.getCallingUid(); 1009 if (getVpnUnderlyingNetworks(uid) != null) { 1010 // A VPN is active, so we may need to return one of its underlying networks. This 1011 // information is not available in LegacyTypeTracker, so we have to get it from 1012 // getUnfilteredActiveNetworkState. 1013 NetworkState state = getUnfilteredActiveNetworkState(uid); 1014 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1015 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1016 } 1017 } 1018 NetworkState state = getFilteredNetworkState(networkType, uid); 1019 return state.networkInfo; 1020 } 1021 1022 @Override 1023 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1024 enforceAccessPermission(); 1025 final int uid = Binder.getCallingUid(); 1026 NetworkInfo info = null; 1027 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1028 if (nai != null) { 1029 synchronized (nai) { 1030 info = new NetworkInfo(nai.networkInfo); 1031 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1032 } 1033 } 1034 return info; 1035 } 1036 1037 @Override 1038 public NetworkInfo[] getAllNetworkInfo() { 1039 enforceAccessPermission(); 1040 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1041 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1042 networkType++) { 1043 NetworkInfo info = getNetworkInfo(networkType); 1044 if (info != null) { 1045 result.add(info); 1046 } 1047 } 1048 return result.toArray(new NetworkInfo[result.size()]); 1049 } 1050 1051 @Override 1052 public Network getNetworkForType(int networkType) { 1053 enforceAccessPermission(); 1054 final int uid = Binder.getCallingUid(); 1055 NetworkState state = getFilteredNetworkState(networkType, uid); 1056 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1057 return state.network; 1058 } 1059 return null; 1060 } 1061 1062 @Override 1063 public Network[] getAllNetworks() { 1064 enforceAccessPermission(); 1065 synchronized (mNetworkForNetId) { 1066 final Network[] result = new Network[mNetworkForNetId.size()]; 1067 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1068 result[i] = mNetworkForNetId.valueAt(i).network; 1069 } 1070 return result; 1071 } 1072 } 1073 1074 @Override 1075 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1076 // The basic principle is: if an app's traffic could possibly go over a 1077 // network, without the app doing anything multinetwork-specific, 1078 // (hence, by "default"), then include that network's capabilities in 1079 // the array. 1080 // 1081 // In the normal case, app traffic only goes over the system's default 1082 // network connection, so that's the only network returned. 1083 // 1084 // With a VPN in force, some app traffic may go into the VPN, and thus 1085 // over whatever underlying networks the VPN specifies, while other app 1086 // traffic may go over the system default network (e.g.: a split-tunnel 1087 // VPN, or an app disallowed by the VPN), so the set of networks 1088 // returned includes the VPN's underlying networks and the system 1089 // default. 1090 enforceAccessPermission(); 1091 1092 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1093 1094 NetworkAgentInfo nai = getDefaultNetwork(); 1095 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1096 if (nc != null) { 1097 result.put(nai.network, nc); 1098 } 1099 1100 if (!mLockdownEnabled) { 1101 synchronized (mVpns) { 1102 Vpn vpn = mVpns.get(userId); 1103 if (vpn != null) { 1104 Network[] networks = vpn.getUnderlyingNetworks(); 1105 if (networks != null) { 1106 for (Network network : networks) { 1107 nai = getNetworkAgentInfoForNetwork(network); 1108 nc = getNetworkCapabilitiesInternal(nai); 1109 if (nc != null) { 1110 result.put(network, nc); 1111 } 1112 } 1113 } 1114 } 1115 } 1116 } 1117 1118 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1119 out = result.values().toArray(out); 1120 return out; 1121 } 1122 1123 @Override 1124 public boolean isNetworkSupported(int networkType) { 1125 enforceAccessPermission(); 1126 return mLegacyTypeTracker.isTypeSupported(networkType); 1127 } 1128 1129 /** 1130 * Return LinkProperties for the active (i.e., connected) default 1131 * network interface. It is assumed that at most one default network 1132 * is active at a time. If more than one is active, it is indeterminate 1133 * which will be returned. 1134 * @return the ip properties for the active network, or {@code null} if 1135 * none is active 1136 */ 1137 @Override 1138 public LinkProperties getActiveLinkProperties() { 1139 enforceAccessPermission(); 1140 final int uid = Binder.getCallingUid(); 1141 NetworkState state = getUnfilteredActiveNetworkState(uid); 1142 return state.linkProperties; 1143 } 1144 1145 @Override 1146 public LinkProperties getLinkPropertiesForType(int networkType) { 1147 enforceAccessPermission(); 1148 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1149 if (nai != null) { 1150 synchronized (nai) { 1151 return new LinkProperties(nai.linkProperties); 1152 } 1153 } 1154 return null; 1155 } 1156 1157 // TODO - this should be ALL networks 1158 @Override 1159 public LinkProperties getLinkProperties(Network network) { 1160 enforceAccessPermission(); 1161 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1162 if (nai != null) { 1163 synchronized (nai) { 1164 return new LinkProperties(nai.linkProperties); 1165 } 1166 } 1167 return null; 1168 } 1169 1170 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1171 if (nai != null) { 1172 synchronized (nai) { 1173 if (nai.networkCapabilities != null) { 1174 return new NetworkCapabilities(nai.networkCapabilities); 1175 } 1176 } 1177 } 1178 return null; 1179 } 1180 1181 @Override 1182 public NetworkCapabilities getNetworkCapabilities(Network network) { 1183 enforceAccessPermission(); 1184 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1185 } 1186 1187 @Override 1188 public NetworkState[] getAllNetworkState() { 1189 // Require internal since we're handing out IMSI details 1190 enforceConnectivityInternalPermission(); 1191 1192 final ArrayList<NetworkState> result = Lists.newArrayList(); 1193 for (Network network : getAllNetworks()) { 1194 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1195 if (nai != null) { 1196 synchronized (nai) { 1197 final String subscriberId = (nai.networkMisc != null) 1198 ? nai.networkMisc.subscriberId : null; 1199 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1200 nai.networkCapabilities, network, subscriberId, null)); 1201 } 1202 } 1203 } 1204 return result.toArray(new NetworkState[result.size()]); 1205 } 1206 1207 @Override 1208 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1209 enforceAccessPermission(); 1210 final int uid = Binder.getCallingUid(); 1211 final long token = Binder.clearCallingIdentity(); 1212 try { 1213 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1214 if (state.networkInfo != null) { 1215 try { 1216 return mPolicyManager.getNetworkQuotaInfo(state); 1217 } catch (RemoteException e) { 1218 } 1219 } 1220 return null; 1221 } finally { 1222 Binder.restoreCallingIdentity(token); 1223 } 1224 } 1225 1226 @Override 1227 public boolean isActiveNetworkMetered() { 1228 enforceAccessPermission(); 1229 final int uid = Binder.getCallingUid(); 1230 final long token = Binder.clearCallingIdentity(); 1231 try { 1232 return isActiveNetworkMeteredUnchecked(uid); 1233 } finally { 1234 Binder.restoreCallingIdentity(token); 1235 } 1236 } 1237 1238 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1239 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1240 if (state.networkInfo != null) { 1241 try { 1242 return mPolicyManager.isNetworkMetered(state); 1243 } catch (RemoteException e) { 1244 } 1245 } 1246 return false; 1247 } 1248 1249 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1250 @Override 1251 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1252 int deviceType = Integer.parseInt(label); 1253 sendDataActivityBroadcast(deviceType, active, tsNanos); 1254 } 1255 }; 1256 1257 /** 1258 * Ensure that a network route exists to deliver traffic to the specified 1259 * host via the specified network interface. 1260 * @param networkType the type of the network over which traffic to the 1261 * specified host is to be routed 1262 * @param hostAddress the IP address of the host to which the route is 1263 * desired 1264 * @return {@code true} on success, {@code false} on failure 1265 */ 1266 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1267 enforceChangePermission(); 1268 if (mProtectedNetworks.contains(networkType)) { 1269 enforceConnectivityInternalPermission(); 1270 } 1271 1272 InetAddress addr; 1273 try { 1274 addr = InetAddress.getByAddress(hostAddress); 1275 } catch (UnknownHostException e) { 1276 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1277 return false; 1278 } 1279 1280 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1281 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1282 return false; 1283 } 1284 1285 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1286 if (nai == null) { 1287 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1288 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1289 } else { 1290 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1291 } 1292 return false; 1293 } 1294 1295 DetailedState netState; 1296 synchronized (nai) { 1297 netState = nai.networkInfo.getDetailedState(); 1298 } 1299 1300 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1301 if (VDBG) { 1302 log("requestRouteToHostAddress on down network " 1303 + "(" + networkType + ") - dropped" 1304 + " netState=" + netState); 1305 } 1306 return false; 1307 } 1308 1309 final int uid = Binder.getCallingUid(); 1310 final long token = Binder.clearCallingIdentity(); 1311 try { 1312 LinkProperties lp; 1313 int netId; 1314 synchronized (nai) { 1315 lp = nai.linkProperties; 1316 netId = nai.network.netId; 1317 } 1318 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1319 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1320 return ok; 1321 } finally { 1322 Binder.restoreCallingIdentity(token); 1323 } 1324 } 1325 1326 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1327 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1328 if (bestRoute == null) { 1329 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1330 } else { 1331 String iface = bestRoute.getInterface(); 1332 if (bestRoute.getGateway().equals(addr)) { 1333 // if there is no better route, add the implied hostroute for our gateway 1334 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1335 } else { 1336 // if we will connect to this through another route, add a direct route 1337 // to it's gateway 1338 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1339 } 1340 } 1341 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1342 try { 1343 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1344 } catch (Exception e) { 1345 // never crash - catch them all 1346 if (DBG) loge("Exception trying to add a route: " + e); 1347 return false; 1348 } 1349 return true; 1350 } 1351 1352 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1353 @Override 1354 public void onUidRulesChanged(int uid, int uidRules) { 1355 // caller is NPMS, since we only register with them 1356 if (LOGD_RULES) { 1357 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1358 } 1359 1360 synchronized (mRulesLock) { 1361 // skip update when we've already applied rules 1362 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1363 if (oldRules == uidRules) return; 1364 1365 mUidRules.put(uid, uidRules); 1366 } 1367 1368 // TODO: notify UID when it has requested targeted updates 1369 } 1370 1371 @Override 1372 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1373 // caller is NPMS, since we only register with them 1374 if (LOGD_RULES) { 1375 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1376 } 1377 1378 synchronized (mRulesLock) { 1379 mMeteredIfaces.clear(); 1380 for (String iface : meteredIfaces) { 1381 mMeteredIfaces.add(iface); 1382 } 1383 } 1384 } 1385 1386 @Override 1387 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1388 // caller is NPMS, since we only register with them 1389 if (LOGD_RULES) { 1390 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1391 } 1392 } 1393 }; 1394 1395 private void enforceInternetPermission() { 1396 mContext.enforceCallingOrSelfPermission( 1397 android.Manifest.permission.INTERNET, 1398 "ConnectivityService"); 1399 } 1400 1401 private void enforceAccessPermission() { 1402 mContext.enforceCallingOrSelfPermission( 1403 android.Manifest.permission.ACCESS_NETWORK_STATE, 1404 "ConnectivityService"); 1405 } 1406 1407 private void enforceChangePermission() { 1408 mContext.enforceCallingOrSelfPermission( 1409 android.Manifest.permission.CHANGE_NETWORK_STATE, 1410 "ConnectivityService"); 1411 } 1412 1413 private void enforceTetherAccessPermission() { 1414 mContext.enforceCallingOrSelfPermission( 1415 android.Manifest.permission.ACCESS_NETWORK_STATE, 1416 "ConnectivityService"); 1417 } 1418 1419 private void enforceConnectivityInternalPermission() { 1420 mContext.enforceCallingOrSelfPermission( 1421 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1422 "ConnectivityService"); 1423 } 1424 1425 public void sendConnectedBroadcast(NetworkInfo info) { 1426 enforceConnectivityInternalPermission(); 1427 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1428 } 1429 1430 private void sendInetConditionBroadcast(NetworkInfo info) { 1431 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1432 } 1433 1434 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1435 if (mLockdownTracker != null) { 1436 info = mLockdownTracker.augmentNetworkInfo(info); 1437 } 1438 1439 Intent intent = new Intent(bcastType); 1440 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1441 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1442 if (info.isFailover()) { 1443 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1444 info.setFailover(false); 1445 } 1446 if (info.getReason() != null) { 1447 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1448 } 1449 if (info.getExtraInfo() != null) { 1450 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1451 info.getExtraInfo()); 1452 } 1453 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1454 return intent; 1455 } 1456 1457 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1458 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1459 } 1460 1461 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1462 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1463 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1464 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1465 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1466 final long ident = Binder.clearCallingIdentity(); 1467 try { 1468 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1469 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1470 } finally { 1471 Binder.restoreCallingIdentity(ident); 1472 } 1473 } 1474 1475 private void sendStickyBroadcast(Intent intent) { 1476 synchronized(this) { 1477 if (!mSystemReady) { 1478 mInitialBroadcast = new Intent(intent); 1479 } 1480 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1481 if (DBG) { 1482 log("sendStickyBroadcast: action=" + intent.getAction()); 1483 } 1484 1485 final long ident = Binder.clearCallingIdentity(); 1486 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1487 final IBatteryStats bs = BatteryStatsService.getService(); 1488 try { 1489 NetworkInfo ni = intent.getParcelableExtra( 1490 ConnectivityManager.EXTRA_NETWORK_INFO); 1491 bs.noteConnectivityChanged(intent.getIntExtra( 1492 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1493 ni != null ? ni.getState().toString() : "?"); 1494 } catch (RemoteException e) { 1495 } 1496 } 1497 try { 1498 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1499 } finally { 1500 Binder.restoreCallingIdentity(ident); 1501 } 1502 } 1503 } 1504 1505 void systemReady() { 1506 loadGlobalProxy(); 1507 1508 synchronized(this) { 1509 mSystemReady = true; 1510 if (mInitialBroadcast != null) { 1511 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1512 mInitialBroadcast = null; 1513 } 1514 } 1515 // load the global proxy at startup 1516 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1517 1518 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1519 // for user to unlock device. 1520 if (!updateLockdownVpn()) { 1521 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1522 mContext.registerReceiver(mUserPresentReceiver, filter); 1523 } 1524 1525 // Configure whether mobile data is always on. 1526 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1527 1528 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1529 1530 mPermissionMonitor.startMonitoring(); 1531 } 1532 1533 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1534 @Override 1535 public void onReceive(Context context, Intent intent) { 1536 // Try creating lockdown tracker, since user present usually means 1537 // unlocked keystore. 1538 if (updateLockdownVpn()) { 1539 mContext.unregisterReceiver(this); 1540 } 1541 } 1542 }; 1543 1544 /** @hide */ 1545 @Override 1546 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1547 enforceConnectivityInternalPermission(); 1548 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1549// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1550 } 1551 1552 /** 1553 * Setup data activity tracking for the given network. 1554 * 1555 * Every {@code setupDataActivityTracking} should be paired with a 1556 * {@link #removeDataActivityTracking} for cleanup. 1557 */ 1558 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1559 final String iface = networkAgent.linkProperties.getInterfaceName(); 1560 1561 final int timeout; 1562 int type = ConnectivityManager.TYPE_NONE; 1563 1564 if (networkAgent.networkCapabilities.hasTransport( 1565 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1566 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1567 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1568 5); 1569 type = ConnectivityManager.TYPE_MOBILE; 1570 } else if (networkAgent.networkCapabilities.hasTransport( 1571 NetworkCapabilities.TRANSPORT_WIFI)) { 1572 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1573 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1574 5); 1575 type = ConnectivityManager.TYPE_WIFI; 1576 } else { 1577 // do not track any other networks 1578 timeout = 0; 1579 } 1580 1581 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1582 try { 1583 mNetd.addIdleTimer(iface, timeout, type); 1584 } catch (Exception e) { 1585 // You shall not crash! 1586 loge("Exception in setupDataActivityTracking " + e); 1587 } 1588 } 1589 } 1590 1591 /** 1592 * Remove data activity tracking when network disconnects. 1593 */ 1594 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1595 final String iface = networkAgent.linkProperties.getInterfaceName(); 1596 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1597 1598 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1599 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1600 try { 1601 // the call fails silently if no idletimer setup for this interface 1602 mNetd.removeIdleTimer(iface); 1603 } catch (Exception e) { 1604 loge("Exception in removeDataActivityTracking " + e); 1605 } 1606 } 1607 } 1608 1609 /** 1610 * Reads the network specific MTU size from reources. 1611 * and set it on it's iface. 1612 */ 1613 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1614 final String iface = newLp.getInterfaceName(); 1615 final int mtu = newLp.getMtu(); 1616 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1617 if (VDBG) log("identical MTU - not setting"); 1618 return; 1619 } 1620 1621 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1622 loge("Unexpected mtu value: " + mtu + ", " + iface); 1623 return; 1624 } 1625 1626 // Cannot set MTU without interface name 1627 if (TextUtils.isEmpty(iface)) { 1628 loge("Setting MTU size with null iface."); 1629 return; 1630 } 1631 1632 try { 1633 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1634 mNetd.setMtu(iface, mtu); 1635 } catch (Exception e) { 1636 Slog.e(TAG, "exception in setMtu()" + e); 1637 } 1638 } 1639 1640 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1641 1642 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1643 if (isDefaultNetwork(nai) == false) { 1644 return; 1645 } 1646 1647 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1648 String[] values = null; 1649 if (tcpBufferSizes != null) { 1650 values = tcpBufferSizes.split(","); 1651 } 1652 1653 if (values == null || values.length != 6) { 1654 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1655 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1656 values = tcpBufferSizes.split(","); 1657 } 1658 1659 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1660 1661 try { 1662 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1663 1664 final String prefix = "/sys/kernel/ipv4/tcp_"; 1665 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1666 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1667 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1668 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1669 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1670 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1671 mCurrentTcpBufferSizes = tcpBufferSizes; 1672 } catch (IOException e) { 1673 loge("Can't set TCP buffer sizes:" + e); 1674 } 1675 1676 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1677 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1678 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1679 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1680 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1681 if (rwndValue != 0) { 1682 SystemProperties.set(sysctlKey, rwndValue.toString()); 1683 } 1684 } 1685 1686 private void flushVmDnsCache() { 1687 /* 1688 * Tell the VMs to toss their DNS caches 1689 */ 1690 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1691 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1692 /* 1693 * Connectivity events can happen before boot has completed ... 1694 */ 1695 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1696 final long ident = Binder.clearCallingIdentity(); 1697 try { 1698 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1699 } finally { 1700 Binder.restoreCallingIdentity(ident); 1701 } 1702 } 1703 1704 @Override 1705 public int getRestoreDefaultNetworkDelay(int networkType) { 1706 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1707 NETWORK_RESTORE_DELAY_PROP_NAME); 1708 if(restoreDefaultNetworkDelayStr != null && 1709 restoreDefaultNetworkDelayStr.length() != 0) { 1710 try { 1711 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1712 } catch (NumberFormatException e) { 1713 } 1714 } 1715 // if the system property isn't set, use the value for the apn type 1716 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1717 1718 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1719 (mNetConfigs[networkType] != null)) { 1720 ret = mNetConfigs[networkType].restoreTime; 1721 } 1722 return ret; 1723 } 1724 1725 @Override 1726 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1727 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1728 if (mContext.checkCallingOrSelfPermission( 1729 android.Manifest.permission.DUMP) 1730 != PackageManager.PERMISSION_GRANTED) { 1731 pw.println("Permission Denial: can't dump ConnectivityService " + 1732 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1733 Binder.getCallingUid()); 1734 return; 1735 } 1736 1737 pw.println("NetworkFactories for:"); 1738 pw.increaseIndent(); 1739 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1740 pw.println(nfi.name); 1741 } 1742 pw.decreaseIndent(); 1743 pw.println(); 1744 1745 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1746 pw.print("Active default network: "); 1747 if (defaultNai == null) { 1748 pw.println("none"); 1749 } else { 1750 pw.println(defaultNai.network.netId); 1751 } 1752 pw.println(); 1753 1754 pw.println("Current Networks:"); 1755 pw.increaseIndent(); 1756 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1757 pw.println(nai.toString()); 1758 pw.increaseIndent(); 1759 pw.println("Requests:"); 1760 pw.increaseIndent(); 1761 for (int i = 0; i < nai.networkRequests.size(); i++) { 1762 pw.println(nai.networkRequests.valueAt(i).toString()); 1763 } 1764 pw.decreaseIndent(); 1765 pw.println("Lingered:"); 1766 pw.increaseIndent(); 1767 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1768 pw.decreaseIndent(); 1769 pw.decreaseIndent(); 1770 } 1771 pw.decreaseIndent(); 1772 pw.println(); 1773 1774 pw.println("Network Requests:"); 1775 pw.increaseIndent(); 1776 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1777 pw.println(nri.toString()); 1778 } 1779 pw.println(); 1780 pw.decreaseIndent(); 1781 1782 pw.println("mLegacyTypeTracker:"); 1783 pw.increaseIndent(); 1784 mLegacyTypeTracker.dump(pw); 1785 pw.decreaseIndent(); 1786 pw.println(); 1787 1788 synchronized (this) { 1789 pw.println("NetworkTransitionWakeLock is currently " + 1790 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1791 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1792 } 1793 pw.println(); 1794 1795 mTethering.dump(fd, pw, args); 1796 1797 if (mInetLog != null) { 1798 pw.println(); 1799 pw.println("Inet condition reports:"); 1800 pw.increaseIndent(); 1801 for(int i = 0; i < mInetLog.size(); i++) { 1802 pw.println(mInetLog.get(i)); 1803 } 1804 pw.decreaseIndent(); 1805 } 1806 } 1807 1808 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1809 if (nai.network == null) return false; 1810 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1811 if (officialNai != null && officialNai.equals(nai)) return true; 1812 if (officialNai != null || VDBG) { 1813 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1814 " - " + nai); 1815 } 1816 return false; 1817 } 1818 1819 private boolean isRequest(NetworkRequest request) { 1820 return mNetworkRequests.get(request).isRequest; 1821 } 1822 1823 // must be stateless - things change under us. 1824 private class NetworkStateTrackerHandler extends Handler { 1825 public NetworkStateTrackerHandler(Looper looper) { 1826 super(looper); 1827 } 1828 1829 @Override 1830 public void handleMessage(Message msg) { 1831 NetworkInfo info; 1832 switch (msg.what) { 1833 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1834 handleAsyncChannelHalfConnect(msg); 1835 break; 1836 } 1837 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1838 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1839 if (nai != null) nai.asyncChannel.disconnect(); 1840 break; 1841 } 1842 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1843 handleAsyncChannelDisconnected(msg); 1844 break; 1845 } 1846 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1847 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1848 if (nai == null) { 1849 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1850 } else { 1851 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1852 } 1853 break; 1854 } 1855 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1856 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1857 if (nai == null) { 1858 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1859 } else { 1860 if (VDBG) { 1861 log("Update of LinkProperties for " + nai.name() + 1862 "; created=" + nai.created); 1863 } 1864 LinkProperties oldLp = nai.linkProperties; 1865 synchronized (nai) { 1866 nai.linkProperties = (LinkProperties)msg.obj; 1867 } 1868 if (nai.created) updateLinkProperties(nai, oldLp); 1869 } 1870 break; 1871 } 1872 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1873 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1874 if (nai == null) { 1875 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1876 break; 1877 } 1878 info = (NetworkInfo) msg.obj; 1879 updateNetworkInfo(nai, info); 1880 break; 1881 } 1882 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1883 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1884 if (nai == null) { 1885 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1886 break; 1887 } 1888 Integer score = (Integer) msg.obj; 1889 if (score != null) updateNetworkScore(nai, score.intValue()); 1890 break; 1891 } 1892 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1893 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1894 if (nai == null) { 1895 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1896 break; 1897 } 1898 try { 1899 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1900 } catch (Exception e) { 1901 // Never crash! 1902 loge("Exception in addVpnUidRanges: " + e); 1903 } 1904 break; 1905 } 1906 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1907 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1908 if (nai == null) { 1909 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1910 break; 1911 } 1912 try { 1913 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1914 } catch (Exception e) { 1915 // Never crash! 1916 loge("Exception in removeVpnUidRanges: " + e); 1917 } 1918 break; 1919 } 1920 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1921 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1922 if (nai == null) { 1923 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1924 break; 1925 } 1926 if (nai.created && !nai.networkMisc.explicitlySelected) { 1927 loge("ERROR: created network explicitly selected."); 1928 } 1929 nai.networkMisc.explicitlySelected = true; 1930 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1931 break; 1932 } 1933 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1934 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1935 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1936 final boolean valid = 1937 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1938 final boolean validationChanged = (valid != nai.lastValidated); 1939 nai.lastValidated = valid; 1940 if (valid) { 1941 if (DBG) log("Validated " + nai.name()); 1942 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 1943 if (!nai.everValidated) { 1944 nai.everValidated = true; 1945 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1946 ReapUnvalidatedNetworks.REAP); 1947 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1948 sendUpdatedScoreToFactories(nai); 1949 } 1950 } else { 1951 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 1952 } 1953 updateInetCondition(nai); 1954 // Let the NetworkAgent know the state of its network 1955 nai.asyncChannel.sendMessage( 1956 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1957 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1958 0, null); 1959 1960 if (validationChanged) { 1961 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 1962 } 1963 } 1964 break; 1965 } 1966 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1967 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1968 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1969 handleLingerComplete(nai); 1970 } 1971 break; 1972 } 1973 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1974 if (msg.arg1 == 0) { 1975 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1976 } else { 1977 final NetworkAgentInfo nai; 1978 synchronized (mNetworkForNetId) { 1979 nai = mNetworkForNetId.get(msg.arg2); 1980 } 1981 if (nai == null) { 1982 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1983 break; 1984 } 1985 nai.captivePortalDetected = true; 1986 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1987 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1988 } 1989 break; 1990 } 1991 } 1992 } 1993 } 1994 1995 // Cancel any lingering so the linger timeout doesn't teardown a network. 1996 // This should be called when a network begins satisfying a NetworkRequest. 1997 // Note: depending on what state the NetworkMonitor is in (e.g., 1998 // if it's awaiting captive portal login, or if validation failed), this 1999 // may trigger a re-evaluation of the network. 2000 private void unlinger(NetworkAgentInfo nai) { 2001 if (VDBG) log("Canceling linger of " + nai.name()); 2002 // If network has never been validated, it cannot have been lingered, so don't bother 2003 // needlessly triggering a re-evaluation. 2004 if (!nai.everValidated) return; 2005 nai.networkLingered.clear(); 2006 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2007 } 2008 2009 private void handleAsyncChannelHalfConnect(Message msg) { 2010 AsyncChannel ac = (AsyncChannel) msg.obj; 2011 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2012 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2013 if (VDBG) log("NetworkFactory connected"); 2014 // A network factory has connected. Send it all current NetworkRequests. 2015 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2016 if (nri.isRequest == false) continue; 2017 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2018 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2019 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2020 } 2021 } else { 2022 loge("Error connecting NetworkFactory"); 2023 mNetworkFactoryInfos.remove(msg.obj); 2024 } 2025 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2026 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2027 if (VDBG) log("NetworkAgent connected"); 2028 // A network agent has requested a connection. Establish the connection. 2029 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2030 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2031 } else { 2032 loge("Error connecting NetworkAgent"); 2033 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2034 if (nai != null) { 2035 final boolean wasDefault = isDefaultNetwork(nai); 2036 synchronized (mNetworkForNetId) { 2037 mNetworkForNetId.remove(nai.network.netId); 2038 mNetIdInUse.delete(nai.network.netId); 2039 } 2040 // Just in case. 2041 mLegacyTypeTracker.remove(nai, wasDefault); 2042 } 2043 } 2044 } 2045 } 2046 2047 private void handleAsyncChannelDisconnected(Message msg) { 2048 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2049 if (nai != null) { 2050 if (DBG) { 2051 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2052 } 2053 // A network agent has disconnected. 2054 if (nai.created) { 2055 // Tell netd to clean up the configuration for this network 2056 // (routing rules, DNS, etc). 2057 try { 2058 mNetd.removeNetwork(nai.network.netId); 2059 } catch (Exception e) { 2060 loge("Exception removing network: " + e); 2061 } 2062 } 2063 // TODO - if we move the logic to the network agent (have them disconnect 2064 // because they lost all their requests or because their score isn't good) 2065 // then they would disconnect organically, report their new state and then 2066 // disconnect the channel. 2067 if (nai.networkInfo.isConnected()) { 2068 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2069 null, null); 2070 } 2071 final boolean wasDefault = isDefaultNetwork(nai); 2072 if (wasDefault) { 2073 mDefaultInetConditionPublished = 0; 2074 } 2075 notifyIfacesChanged(); 2076 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2077 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2078 mNetworkAgentInfos.remove(msg.replyTo); 2079 updateClat(null, nai.linkProperties, nai); 2080 synchronized (mNetworkForNetId) { 2081 mNetworkForNetId.remove(nai.network.netId); 2082 mNetIdInUse.delete(nai.network.netId); 2083 } 2084 // Since we've lost the network, go through all the requests that 2085 // it was satisfying and see if any other factory can satisfy them. 2086 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2087 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2088 for (int i = 0; i < nai.networkRequests.size(); i++) { 2089 NetworkRequest request = nai.networkRequests.valueAt(i); 2090 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2091 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2092 if (DBG) { 2093 log("Checking for replacement network to handle request " + request ); 2094 } 2095 mNetworkForRequestId.remove(request.requestId); 2096 sendUpdatedScoreToFactories(request, 0); 2097 NetworkAgentInfo alternative = null; 2098 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2099 if (existing.satisfies(request) && 2100 (alternative == null || 2101 alternative.getCurrentScore() < existing.getCurrentScore())) { 2102 alternative = existing; 2103 } 2104 } 2105 if (alternative != null) { 2106 if (DBG) log(" found replacement in " + alternative.name()); 2107 if (!toActivate.contains(alternative)) { 2108 toActivate.add(alternative); 2109 } 2110 } 2111 } 2112 } 2113 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2114 removeDataActivityTracking(nai); 2115 notifyLockdownVpn(nai); 2116 requestNetworkTransitionWakelock(nai.name()); 2117 } 2118 mLegacyTypeTracker.remove(nai, wasDefault); 2119 for (NetworkAgentInfo networkToActivate : toActivate) { 2120 unlinger(networkToActivate); 2121 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2122 ReapUnvalidatedNetworks.DONT_REAP); 2123 } 2124 } 2125 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2126 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2127 } 2128 2129 // If this method proves to be too slow then we can maintain a separate 2130 // pendingIntent => NetworkRequestInfo map. 2131 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2132 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2133 Intent intent = pendingIntent.getIntent(); 2134 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2135 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2136 if (existingPendingIntent != null && 2137 existingPendingIntent.getIntent().filterEquals(intent)) { 2138 return entry.getValue(); 2139 } 2140 } 2141 return null; 2142 } 2143 2144 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2145 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2146 2147 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2148 if (existingRequest != null) { // remove the existing request. 2149 if (DBG) log("Replacing " + existingRequest.request + " with " 2150 + nri.request + " because their intents matched."); 2151 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2152 } 2153 handleRegisterNetworkRequest(nri); 2154 } 2155 2156 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2157 mNetworkRequests.put(nri.request, nri); 2158 2159 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2160 2161 // Check for the best currently alive network that satisfies this request 2162 NetworkAgentInfo bestNetwork = null; 2163 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2164 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2165 if (network.satisfies(nri.request)) { 2166 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2167 if (!nri.isRequest) { 2168 // Not setting bestNetwork here as a listening NetworkRequest may be 2169 // satisfied by multiple Networks. Instead the request is added to 2170 // each satisfying Network and notified about each. 2171 network.addRequest(nri.request); 2172 notifyNetworkCallback(network, nri); 2173 } else if (bestNetwork == null || 2174 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2175 bestNetwork = network; 2176 } 2177 } 2178 } 2179 if (bestNetwork != null) { 2180 if (DBG) log("using " + bestNetwork.name()); 2181 unlinger(bestNetwork); 2182 bestNetwork.addRequest(nri.request); 2183 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2184 notifyNetworkCallback(bestNetwork, nri); 2185 if (nri.request.legacyType != TYPE_NONE) { 2186 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2187 } 2188 } 2189 2190 if (nri.isRequest) { 2191 if (DBG) log("sending new NetworkRequest to factories"); 2192 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2193 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2194 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2195 0, nri.request); 2196 } 2197 } 2198 } 2199 2200 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2201 int callingUid) { 2202 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2203 if (nri != null) { 2204 handleReleaseNetworkRequest(nri.request, callingUid); 2205 } 2206 } 2207 2208 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2209 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2210 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2211 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2212 private boolean unneeded(NetworkAgentInfo nai) { 2213 if (!nai.created || nai.isVPN()) return false; 2214 boolean unneeded = true; 2215 if (nai.everValidated) { 2216 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2217 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2218 try { 2219 if (isRequest(nr)) unneeded = false; 2220 } catch (Exception e) { 2221 loge("Request " + nr + " not found in mNetworkRequests."); 2222 loge(" it came from request list of " + nai.name()); 2223 } 2224 } 2225 } else { 2226 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2227 // If this Network is already the highest scoring Network for a request, or if 2228 // there is hope for it to become one if it validated, then it is needed. 2229 if (nri.isRequest && nai.satisfies(nri.request) && 2230 (nai.networkRequests.get(nri.request.requestId) != null || 2231 // Note that this catches two important cases: 2232 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2233 // is currently satisfying the request. This is desirable when 2234 // cellular ends up validating but WiFi does not. 2235 // 2. Unvalidated WiFi will not be reaped when validated cellular 2236 // is currently satsifying the request. This is desirable when 2237 // WiFi ends up validating and out scoring cellular. 2238 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2239 nai.getCurrentScoreAsValidated())) { 2240 unneeded = false; 2241 break; 2242 } 2243 } 2244 } 2245 return unneeded; 2246 } 2247 2248 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2249 NetworkRequestInfo nri = mNetworkRequests.get(request); 2250 if (nri != null) { 2251 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2252 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2253 return; 2254 } 2255 if (DBG) log("releasing NetworkRequest " + request); 2256 nri.unlinkDeathRecipient(); 2257 mNetworkRequests.remove(request); 2258 if (nri.isRequest) { 2259 // Find all networks that are satisfying this request and remove the request 2260 // from their request lists. 2261 // TODO - it's my understanding that for a request there is only a single 2262 // network satisfying it, so this loop is wasteful 2263 boolean wasKept = false; 2264 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2265 if (nai.networkRequests.get(nri.request.requestId) != null) { 2266 nai.networkRequests.remove(nri.request.requestId); 2267 if (DBG) { 2268 log(" Removing from current network " + nai.name() + 2269 ", leaving " + nai.networkRequests.size() + 2270 " requests."); 2271 } 2272 if (unneeded(nai)) { 2273 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2274 teardownUnneededNetwork(nai); 2275 } else { 2276 // suspect there should only be one pass through here 2277 // but if any were kept do the check below 2278 wasKept |= true; 2279 } 2280 } 2281 } 2282 2283 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2284 if (nai != null) { 2285 mNetworkForRequestId.remove(nri.request.requestId); 2286 } 2287 // Maintain the illusion. When this request arrived, we might have pretended 2288 // that a network connected to serve it, even though the network was already 2289 // connected. Now that this request has gone away, we might have to pretend 2290 // that the network disconnected. LegacyTypeTracker will generate that 2291 // phantom disconnect for this type. 2292 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2293 boolean doRemove = true; 2294 if (wasKept) { 2295 // check if any of the remaining requests for this network are for the 2296 // same legacy type - if so, don't remove the nai 2297 for (int i = 0; i < nai.networkRequests.size(); i++) { 2298 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2299 if (otherRequest.legacyType == nri.request.legacyType && 2300 isRequest(otherRequest)) { 2301 if (DBG) log(" still have other legacy request - leaving"); 2302 doRemove = false; 2303 } 2304 } 2305 } 2306 2307 if (doRemove) { 2308 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2309 } 2310 } 2311 2312 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2313 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2314 nri.request); 2315 } 2316 } else { 2317 // listens don't have a singular affectedNetwork. Check all networks to see 2318 // if this listen request applies and remove it. 2319 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2320 nai.networkRequests.remove(nri.request.requestId); 2321 } 2322 } 2323 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2324 } 2325 } 2326 2327 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2328 enforceConnectivityInternalPermission(); 2329 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2330 accept ? 1 : 0, always ? 1: 0, network)); 2331 } 2332 2333 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2334 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2335 " accept=" + accept + " always=" + always); 2336 2337 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2338 if (nai == null) { 2339 // Nothing to do. 2340 return; 2341 } 2342 2343 if (nai.everValidated) { 2344 // The network validated while the dialog box was up. Don't make any changes. There's a 2345 // TODO in the dialog code to make it go away if the network validates; once that's 2346 // implemented, taking action here will be confusing. 2347 return; 2348 } 2349 2350 if (!nai.networkMisc.explicitlySelected) { 2351 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2352 } 2353 2354 if (accept != nai.networkMisc.acceptUnvalidated) { 2355 int oldScore = nai.getCurrentScore(); 2356 nai.networkMisc.acceptUnvalidated = accept; 2357 rematchAllNetworksAndRequests(nai, oldScore); 2358 sendUpdatedScoreToFactories(nai); 2359 } 2360 2361 if (always) { 2362 nai.asyncChannel.sendMessage( 2363 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2364 } 2365 2366 // TODO: should we also disconnect from the network if accept is false? 2367 } 2368 2369 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2370 mHandler.sendMessageDelayed( 2371 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2372 PROMPT_UNVALIDATED_DELAY_MS); 2373 } 2374 2375 private void handlePromptUnvalidated(Network network) { 2376 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2377 2378 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2379 // we haven't already been told to switch to it regardless of whether it validated or not. 2380 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2381 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2382 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2383 return; 2384 } 2385 2386 // TODO: What should we do if we've already switched to this network because we had no 2387 // better option? There are two obvious alternatives. 2388 // 2389 // 1. Decide that there's no point prompting because this is our only usable network. 2390 // However, because we didn't prompt, if later on a validated network comes along, we'll 2391 // either a) silently switch to it - bad if the user wanted to connect to stay on this 2392 // unvalidated network - or b) prompt the user at that later time - bad because the user 2393 // might not understand why they are now being prompted. 2394 // 2395 // 2. Always prompt the user, even if we have no other network to use. The user could then 2396 // try to find an alternative network to join (remember, if we got here, then the user 2397 // selected this network manually). This is bad because the prompt isn't really very 2398 // useful. 2399 // 2400 // For now we do #1, but we can revisit that later. 2401 if (isDefaultNetwork(nai)) { 2402 return; 2403 } 2404 2405 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2406 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, network); 2407 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2408 intent.setClassName("com.android.settings", 2409 "com.android.settings.wifi.WifiNoInternetDialog"); 2410 mContext.startActivityAsUser(intent, UserHandle.CURRENT); 2411 } 2412 2413 private class InternalHandler extends Handler { 2414 public InternalHandler(Looper looper) { 2415 super(looper); 2416 } 2417 2418 @Override 2419 public void handleMessage(Message msg) { 2420 switch (msg.what) { 2421 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2422 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2423 String causedBy = null; 2424 synchronized (ConnectivityService.this) { 2425 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2426 mNetTransitionWakeLock.isHeld()) { 2427 mNetTransitionWakeLock.release(); 2428 causedBy = mNetTransitionWakeLockCausedBy; 2429 } else { 2430 break; 2431 } 2432 } 2433 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2434 log("Failed to find a new network - expiring NetTransition Wakelock"); 2435 } else { 2436 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2437 " cleared because we found a replacement network"); 2438 } 2439 break; 2440 } 2441 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2442 handleDeprecatedGlobalHttpProxy(); 2443 break; 2444 } 2445 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2446 Intent intent = (Intent)msg.obj; 2447 sendStickyBroadcast(intent); 2448 break; 2449 } 2450 case EVENT_PROXY_HAS_CHANGED: { 2451 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2452 break; 2453 } 2454 case EVENT_REGISTER_NETWORK_FACTORY: { 2455 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2456 break; 2457 } 2458 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2459 handleUnregisterNetworkFactory((Messenger)msg.obj); 2460 break; 2461 } 2462 case EVENT_REGISTER_NETWORK_AGENT: { 2463 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2464 break; 2465 } 2466 case EVENT_REGISTER_NETWORK_REQUEST: 2467 case EVENT_REGISTER_NETWORK_LISTENER: { 2468 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2469 break; 2470 } 2471 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2472 handleRegisterNetworkRequestWithIntent(msg); 2473 break; 2474 } 2475 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2476 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2477 break; 2478 } 2479 case EVENT_RELEASE_NETWORK_REQUEST: { 2480 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2481 break; 2482 } 2483 case EVENT_SET_ACCEPT_UNVALIDATED: { 2484 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2485 break; 2486 } 2487 case EVENT_PROMPT_UNVALIDATED: { 2488 handlePromptUnvalidated((Network) msg.obj); 2489 break; 2490 } 2491 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2492 handleMobileDataAlwaysOn(); 2493 break; 2494 } 2495 case EVENT_SYSTEM_READY: { 2496 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2497 nai.networkMonitor.systemReady = true; 2498 } 2499 break; 2500 } 2501 } 2502 } 2503 } 2504 2505 // javadoc from interface 2506 public int tether(String iface) { 2507 ConnectivityManager.enforceTetherChangePermission(mContext); 2508 if (isTetheringSupported()) { 2509 return mTethering.tether(iface); 2510 } else { 2511 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2512 } 2513 } 2514 2515 // javadoc from interface 2516 public int untether(String iface) { 2517 ConnectivityManager.enforceTetherChangePermission(mContext); 2518 2519 if (isTetheringSupported()) { 2520 return mTethering.untether(iface); 2521 } else { 2522 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2523 } 2524 } 2525 2526 // javadoc from interface 2527 public int getLastTetherError(String iface) { 2528 enforceTetherAccessPermission(); 2529 2530 if (isTetheringSupported()) { 2531 return mTethering.getLastTetherError(iface); 2532 } else { 2533 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2534 } 2535 } 2536 2537 // TODO - proper iface API for selection by property, inspection, etc 2538 public String[] getTetherableUsbRegexs() { 2539 enforceTetherAccessPermission(); 2540 if (isTetheringSupported()) { 2541 return mTethering.getTetherableUsbRegexs(); 2542 } else { 2543 return new String[0]; 2544 } 2545 } 2546 2547 public String[] getTetherableWifiRegexs() { 2548 enforceTetherAccessPermission(); 2549 if (isTetheringSupported()) { 2550 return mTethering.getTetherableWifiRegexs(); 2551 } else { 2552 return new String[0]; 2553 } 2554 } 2555 2556 public String[] getTetherableBluetoothRegexs() { 2557 enforceTetherAccessPermission(); 2558 if (isTetheringSupported()) { 2559 return mTethering.getTetherableBluetoothRegexs(); 2560 } else { 2561 return new String[0]; 2562 } 2563 } 2564 2565 public int setUsbTethering(boolean enable) { 2566 ConnectivityManager.enforceTetherChangePermission(mContext); 2567 if (isTetheringSupported()) { 2568 return mTethering.setUsbTethering(enable); 2569 } else { 2570 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2571 } 2572 } 2573 2574 // TODO - move iface listing, queries, etc to new module 2575 // javadoc from interface 2576 public String[] getTetherableIfaces() { 2577 enforceTetherAccessPermission(); 2578 return mTethering.getTetherableIfaces(); 2579 } 2580 2581 public String[] getTetheredIfaces() { 2582 enforceTetherAccessPermission(); 2583 return mTethering.getTetheredIfaces(); 2584 } 2585 2586 public String[] getTetheringErroredIfaces() { 2587 enforceTetherAccessPermission(); 2588 return mTethering.getErroredIfaces(); 2589 } 2590 2591 public String[] getTetheredDhcpRanges() { 2592 enforceConnectivityInternalPermission(); 2593 return mTethering.getTetheredDhcpRanges(); 2594 } 2595 2596 // if ro.tether.denied = true we default to no tethering 2597 // gservices could set the secure setting to 1 though to enable it on a build where it 2598 // had previously been turned off. 2599 public boolean isTetheringSupported() { 2600 enforceTetherAccessPermission(); 2601 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2602 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2603 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2604 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2605 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2606 mTethering.getTetherableWifiRegexs().length != 0 || 2607 mTethering.getTetherableBluetoothRegexs().length != 0) && 2608 mTethering.getUpstreamIfaceTypes().length != 0); 2609 } 2610 2611 // Called when we lose the default network and have no replacement yet. 2612 // This will automatically be cleared after X seconds or a new default network 2613 // becomes CONNECTED, whichever happens first. The timer is started by the 2614 // first caller and not restarted by subsequent callers. 2615 private void requestNetworkTransitionWakelock(String forWhom) { 2616 int serialNum = 0; 2617 synchronized (this) { 2618 if (mNetTransitionWakeLock.isHeld()) return; 2619 serialNum = ++mNetTransitionWakeLockSerialNumber; 2620 mNetTransitionWakeLock.acquire(); 2621 mNetTransitionWakeLockCausedBy = forWhom; 2622 } 2623 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2624 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2625 mNetTransitionWakeLockTimeout); 2626 return; 2627 } 2628 2629 // 100 percent is full good, 0 is full bad. 2630 public void reportInetCondition(int networkType, int percentage) { 2631 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2632 if (nai == null) return; 2633 reportNetworkConnectivity(nai.network, percentage > 50); 2634 } 2635 2636 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2637 enforceAccessPermission(); 2638 enforceInternetPermission(); 2639 2640 NetworkAgentInfo nai; 2641 if (network == null) { 2642 nai = getDefaultNetwork(); 2643 } else { 2644 nai = getNetworkAgentInfoForNetwork(network); 2645 } 2646 if (nai == null) return; 2647 // Revalidate if the app report does not match our current validated state. 2648 if (hasConnectivity == nai.lastValidated) return; 2649 final int uid = Binder.getCallingUid(); 2650 if (DBG) { 2651 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2652 ") by " + uid); 2653 } 2654 synchronized (nai) { 2655 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2656 // which isn't meant to work on uncreated networks. 2657 if (!nai.created) return; 2658 2659 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2660 2661 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2662 } 2663 } 2664 2665 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2666 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2667 enforceConnectivityInternalPermission(); 2668 } 2669 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2670 if (nai == null) return; 2671 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2672 actionToken); 2673 } 2674 2675 public ProxyInfo getDefaultProxy() { 2676 // this information is already available as a world read/writable jvm property 2677 // so this API change wouldn't have a benifit. It also breaks the passing 2678 // of proxy info to all the JVMs. 2679 // enforceAccessPermission(); 2680 synchronized (mProxyLock) { 2681 ProxyInfo ret = mGlobalProxy; 2682 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2683 return ret; 2684 } 2685 } 2686 2687 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2688 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2689 // proxy is null then there is no proxy in place). 2690 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2691 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2692 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2693 proxy = null; 2694 } 2695 return proxy; 2696 } 2697 2698 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2699 // better for determining if a new proxy broadcast is necessary: 2700 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2701 // avoid unnecessary broadcasts. 2702 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2703 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2704 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2705 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2706 // all set. 2707 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2708 a = canonicalizeProxyInfo(a); 2709 b = canonicalizeProxyInfo(b); 2710 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2711 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2712 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2713 } 2714 2715 public void setGlobalProxy(ProxyInfo proxyProperties) { 2716 enforceConnectivityInternalPermission(); 2717 2718 synchronized (mProxyLock) { 2719 if (proxyProperties == mGlobalProxy) return; 2720 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2721 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2722 2723 String host = ""; 2724 int port = 0; 2725 String exclList = ""; 2726 String pacFileUrl = ""; 2727 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2728 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2729 if (!proxyProperties.isValid()) { 2730 if (DBG) 2731 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2732 return; 2733 } 2734 mGlobalProxy = new ProxyInfo(proxyProperties); 2735 host = mGlobalProxy.getHost(); 2736 port = mGlobalProxy.getPort(); 2737 exclList = mGlobalProxy.getExclusionListAsString(); 2738 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2739 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2740 } 2741 } else { 2742 mGlobalProxy = null; 2743 } 2744 ContentResolver res = mContext.getContentResolver(); 2745 final long token = Binder.clearCallingIdentity(); 2746 try { 2747 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2748 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2749 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2750 exclList); 2751 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2752 } finally { 2753 Binder.restoreCallingIdentity(token); 2754 } 2755 2756 if (mGlobalProxy == null) { 2757 proxyProperties = mDefaultProxy; 2758 } 2759 sendProxyBroadcast(proxyProperties); 2760 } 2761 } 2762 2763 private void loadGlobalProxy() { 2764 ContentResolver res = mContext.getContentResolver(); 2765 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2766 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2767 String exclList = Settings.Global.getString(res, 2768 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2769 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2770 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2771 ProxyInfo proxyProperties; 2772 if (!TextUtils.isEmpty(pacFileUrl)) { 2773 proxyProperties = new ProxyInfo(pacFileUrl); 2774 } else { 2775 proxyProperties = new ProxyInfo(host, port, exclList); 2776 } 2777 if (!proxyProperties.isValid()) { 2778 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2779 return; 2780 } 2781 2782 synchronized (mProxyLock) { 2783 mGlobalProxy = proxyProperties; 2784 } 2785 } 2786 } 2787 2788 public ProxyInfo getGlobalProxy() { 2789 // this information is already available as a world read/writable jvm property 2790 // so this API change wouldn't have a benifit. It also breaks the passing 2791 // of proxy info to all the JVMs. 2792 // enforceAccessPermission(); 2793 synchronized (mProxyLock) { 2794 return mGlobalProxy; 2795 } 2796 } 2797 2798 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2799 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2800 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2801 proxy = null; 2802 } 2803 synchronized (mProxyLock) { 2804 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2805 if (mDefaultProxy == proxy) return; // catches repeated nulls 2806 if (proxy != null && !proxy.isValid()) { 2807 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2808 return; 2809 } 2810 2811 // This call could be coming from the PacManager, containing the port of the local 2812 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2813 // global (to get the correct local port), and send a broadcast. 2814 // TODO: Switch PacManager to have its own message to send back rather than 2815 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2816 if ((mGlobalProxy != null) && (proxy != null) 2817 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2818 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2819 mGlobalProxy = proxy; 2820 sendProxyBroadcast(mGlobalProxy); 2821 return; 2822 } 2823 mDefaultProxy = proxy; 2824 2825 if (mGlobalProxy != null) return; 2826 if (!mDefaultProxyDisabled) { 2827 sendProxyBroadcast(proxy); 2828 } 2829 } 2830 } 2831 2832 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2833 // This method gets called when any network changes proxy, but the broadcast only ever contains 2834 // the default proxy (even if it hasn't changed). 2835 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2836 // world where an app might be bound to a non-default network. 2837 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2838 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2839 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2840 2841 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2842 sendProxyBroadcast(getDefaultProxy()); 2843 } 2844 } 2845 2846 private void handleDeprecatedGlobalHttpProxy() { 2847 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2848 Settings.Global.HTTP_PROXY); 2849 if (!TextUtils.isEmpty(proxy)) { 2850 String data[] = proxy.split(":"); 2851 if (data.length == 0) { 2852 return; 2853 } 2854 2855 String proxyHost = data[0]; 2856 int proxyPort = 8080; 2857 if (data.length > 1) { 2858 try { 2859 proxyPort = Integer.parseInt(data[1]); 2860 } catch (NumberFormatException e) { 2861 return; 2862 } 2863 } 2864 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2865 setGlobalProxy(p); 2866 } 2867 } 2868 2869 private void sendProxyBroadcast(ProxyInfo proxy) { 2870 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2871 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2872 if (DBG) log("sending Proxy Broadcast for " + proxy); 2873 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2874 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2875 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2876 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2877 final long ident = Binder.clearCallingIdentity(); 2878 try { 2879 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2880 } finally { 2881 Binder.restoreCallingIdentity(ident); 2882 } 2883 } 2884 2885 private static class SettingsObserver extends ContentObserver { 2886 final private HashMap<Uri, Integer> mUriEventMap; 2887 final private Context mContext; 2888 final private Handler mHandler; 2889 2890 SettingsObserver(Context context, Handler handler) { 2891 super(null); 2892 mUriEventMap = new HashMap<Uri, Integer>(); 2893 mContext = context; 2894 mHandler = handler; 2895 } 2896 2897 void observe(Uri uri, int what) { 2898 mUriEventMap.put(uri, what); 2899 final ContentResolver resolver = mContext.getContentResolver(); 2900 resolver.registerContentObserver(uri, false, this); 2901 } 2902 2903 @Override 2904 public void onChange(boolean selfChange) { 2905 Slog.wtf(TAG, "Should never be reached."); 2906 } 2907 2908 @Override 2909 public void onChange(boolean selfChange, Uri uri) { 2910 final Integer what = mUriEventMap.get(uri); 2911 if (what != null) { 2912 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2913 } else { 2914 loge("No matching event to send for URI=" + uri); 2915 } 2916 } 2917 } 2918 2919 private static void log(String s) { 2920 Slog.d(TAG, s); 2921 } 2922 2923 private static void loge(String s) { 2924 Slog.e(TAG, s); 2925 } 2926 2927 private static <T> T checkNotNull(T value, String message) { 2928 if (value == null) { 2929 throw new NullPointerException(message); 2930 } 2931 return value; 2932 } 2933 2934 /** 2935 * Prepare for a VPN application. 2936 * Permissions are checked in Vpn class. 2937 * @hide 2938 */ 2939 @Override 2940 public boolean prepareVpn(String oldPackage, String newPackage) { 2941 throwIfLockdownEnabled(); 2942 int user = UserHandle.getUserId(Binder.getCallingUid()); 2943 synchronized(mVpns) { 2944 return mVpns.get(user).prepare(oldPackage, newPackage); 2945 } 2946 } 2947 2948 /** 2949 * Set whether the current VPN package has the ability to launch VPNs without 2950 * user intervention. This method is used by system-privileged apps. 2951 * Permissions are checked in Vpn class. 2952 * @hide 2953 */ 2954 @Override 2955 public void setVpnPackageAuthorization(boolean authorized) { 2956 int user = UserHandle.getUserId(Binder.getCallingUid()); 2957 synchronized(mVpns) { 2958 mVpns.get(user).setPackageAuthorization(authorized); 2959 } 2960 } 2961 2962 /** 2963 * Configure a TUN interface and return its file descriptor. Parameters 2964 * are encoded and opaque to this class. This method is used by VpnBuilder 2965 * and not available in ConnectivityManager. Permissions are checked in 2966 * Vpn class. 2967 * @hide 2968 */ 2969 @Override 2970 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2971 throwIfLockdownEnabled(); 2972 int user = UserHandle.getUserId(Binder.getCallingUid()); 2973 synchronized(mVpns) { 2974 return mVpns.get(user).establish(config); 2975 } 2976 } 2977 2978 /** 2979 * Start legacy VPN, controlling native daemons as needed. Creates a 2980 * secondary thread to perform connection work, returning quickly. 2981 */ 2982 @Override 2983 public void startLegacyVpn(VpnProfile profile) { 2984 throwIfLockdownEnabled(); 2985 final LinkProperties egress = getActiveLinkProperties(); 2986 if (egress == null) { 2987 throw new IllegalStateException("Missing active network connection"); 2988 } 2989 int user = UserHandle.getUserId(Binder.getCallingUid()); 2990 synchronized(mVpns) { 2991 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2992 } 2993 } 2994 2995 /** 2996 * Return the information of the ongoing legacy VPN. This method is used 2997 * by VpnSettings and not available in ConnectivityManager. Permissions 2998 * are checked in Vpn class. 2999 */ 3000 @Override 3001 public LegacyVpnInfo getLegacyVpnInfo() { 3002 throwIfLockdownEnabled(); 3003 int user = UserHandle.getUserId(Binder.getCallingUid()); 3004 synchronized(mVpns) { 3005 return mVpns.get(user).getLegacyVpnInfo(); 3006 } 3007 } 3008 3009 /** 3010 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3011 * and not available in ConnectivityManager. 3012 */ 3013 @Override 3014 public VpnInfo[] getAllVpnInfo() { 3015 enforceConnectivityInternalPermission(); 3016 if (mLockdownEnabled) { 3017 return new VpnInfo[0]; 3018 } 3019 3020 synchronized(mVpns) { 3021 List<VpnInfo> infoList = new ArrayList<>(); 3022 for (int i = 0; i < mVpns.size(); i++) { 3023 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3024 if (info != null) { 3025 infoList.add(info); 3026 } 3027 } 3028 return infoList.toArray(new VpnInfo[infoList.size()]); 3029 } 3030 } 3031 3032 /** 3033 * @return VPN information for accounting, or null if we can't retrieve all required 3034 * information, e.g primary underlying iface. 3035 */ 3036 @Nullable 3037 private VpnInfo createVpnInfo(Vpn vpn) { 3038 VpnInfo info = vpn.getVpnInfo(); 3039 if (info == null) { 3040 return null; 3041 } 3042 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3043 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3044 // the underlyingNetworks list. 3045 if (underlyingNetworks == null) { 3046 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3047 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3048 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3049 } 3050 } else if (underlyingNetworks.length > 0) { 3051 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3052 if (linkProperties != null) { 3053 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3054 } 3055 } 3056 return info.primaryUnderlyingIface == null ? null : info; 3057 } 3058 3059 /** 3060 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3061 * not available in ConnectivityManager. 3062 * Permissions are checked in Vpn class. 3063 * @hide 3064 */ 3065 @Override 3066 public VpnConfig getVpnConfig() { 3067 int user = UserHandle.getUserId(Binder.getCallingUid()); 3068 synchronized(mVpns) { 3069 return mVpns.get(user).getVpnConfig(); 3070 } 3071 } 3072 3073 @Override 3074 public boolean updateLockdownVpn() { 3075 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3076 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3077 return false; 3078 } 3079 3080 // Tear down existing lockdown if profile was removed 3081 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3082 if (mLockdownEnabled) { 3083 if (!mKeyStore.isUnlocked()) { 3084 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3085 return false; 3086 } 3087 3088 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3089 final VpnProfile profile = VpnProfile.decode( 3090 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3091 int user = UserHandle.getUserId(Binder.getCallingUid()); 3092 synchronized(mVpns) { 3093 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3094 profile)); 3095 } 3096 } else { 3097 setLockdownTracker(null); 3098 } 3099 3100 return true; 3101 } 3102 3103 /** 3104 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3105 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3106 */ 3107 private void setLockdownTracker(LockdownVpnTracker tracker) { 3108 // Shutdown any existing tracker 3109 final LockdownVpnTracker existing = mLockdownTracker; 3110 mLockdownTracker = null; 3111 if (existing != null) { 3112 existing.shutdown(); 3113 } 3114 3115 try { 3116 if (tracker != null) { 3117 mNetd.setFirewallEnabled(true); 3118 mNetd.setFirewallInterfaceRule("lo", true); 3119 mLockdownTracker = tracker; 3120 mLockdownTracker.init(); 3121 } else { 3122 mNetd.setFirewallEnabled(false); 3123 } 3124 } catch (RemoteException e) { 3125 // ignored; NMS lives inside system_server 3126 } 3127 } 3128 3129 private void throwIfLockdownEnabled() { 3130 if (mLockdownEnabled) { 3131 throw new IllegalStateException("Unavailable in lockdown mode"); 3132 } 3133 } 3134 3135 @Override 3136 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3137 // TODO: Remove? Any reason to trigger a provisioning check? 3138 return -1; 3139 } 3140 3141 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3142 private volatile boolean mIsNotificationVisible = false; 3143 3144 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3145 if (DBG) { 3146 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3147 + " action=" + action); 3148 } 3149 Intent intent = new Intent(action); 3150 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3151 // Concatenate the range of types onto the range of NetIDs. 3152 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3153 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3154 } 3155 3156 /** 3157 * Show or hide network provisioning notificaitons. 3158 * 3159 * @param id an identifier that uniquely identifies this notification. This must match 3160 * between show and hide calls. We use the NetID value but for legacy callers 3161 * we concatenate the range of types with the range of NetIDs. 3162 */ 3163 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3164 String extraInfo, PendingIntent intent) { 3165 if (DBG) { 3166 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3167 networkType + " extraInfo=" + extraInfo); 3168 } 3169 3170 Resources r = Resources.getSystem(); 3171 NotificationManager notificationManager = (NotificationManager) mContext 3172 .getSystemService(Context.NOTIFICATION_SERVICE); 3173 3174 if (visible) { 3175 CharSequence title; 3176 CharSequence details; 3177 int icon; 3178 Notification notification = new Notification(); 3179 switch (networkType) { 3180 case ConnectivityManager.TYPE_WIFI: 3181 title = r.getString(R.string.wifi_available_sign_in, 0); 3182 details = r.getString(R.string.network_available_sign_in_detailed, 3183 extraInfo); 3184 icon = R.drawable.stat_notify_wifi_in_range; 3185 break; 3186 case ConnectivityManager.TYPE_MOBILE: 3187 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3188 title = r.getString(R.string.network_available_sign_in, 0); 3189 // TODO: Change this to pull from NetworkInfo once a printable 3190 // name has been added to it 3191 details = mTelephonyManager.getNetworkOperatorName(); 3192 icon = R.drawable.stat_notify_rssi_in_range; 3193 break; 3194 default: 3195 title = r.getString(R.string.network_available_sign_in, 0); 3196 details = r.getString(R.string.network_available_sign_in_detailed, 3197 extraInfo); 3198 icon = R.drawable.stat_notify_rssi_in_range; 3199 break; 3200 } 3201 3202 notification.when = 0; 3203 notification.icon = icon; 3204 notification.flags = Notification.FLAG_AUTO_CANCEL; 3205 notification.tickerText = title; 3206 notification.color = mContext.getColor( 3207 com.android.internal.R.color.system_notification_accent_color); 3208 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3209 notification.contentIntent = intent; 3210 3211 try { 3212 notificationManager.notify(NOTIFICATION_ID, id, notification); 3213 } catch (NullPointerException npe) { 3214 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3215 npe.printStackTrace(); 3216 } 3217 } else { 3218 try { 3219 notificationManager.cancel(NOTIFICATION_ID, id); 3220 } catch (NullPointerException npe) { 3221 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3222 npe.printStackTrace(); 3223 } 3224 } 3225 mIsNotificationVisible = visible; 3226 } 3227 3228 /** Location to an updatable file listing carrier provisioning urls. 3229 * An example: 3230 * 3231 * <?xml version="1.0" encoding="utf-8"?> 3232 * <provisioningUrls> 3233 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3234 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3235 * </provisioningUrls> 3236 */ 3237 private static final String PROVISIONING_URL_PATH = 3238 "/data/misc/radio/provisioning_urls.xml"; 3239 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3240 3241 /** XML tag for root element. */ 3242 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3243 /** XML tag for individual url */ 3244 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3245 /** XML tag for redirected url */ 3246 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3247 /** XML attribute for mcc */ 3248 private static final String ATTR_MCC = "mcc"; 3249 /** XML attribute for mnc */ 3250 private static final String ATTR_MNC = "mnc"; 3251 3252 private static final int REDIRECTED_PROVISIONING = 1; 3253 private static final int PROVISIONING = 2; 3254 3255 private String getProvisioningUrlBaseFromFile(int type) { 3256 FileReader fileReader = null; 3257 XmlPullParser parser = null; 3258 Configuration config = mContext.getResources().getConfiguration(); 3259 String tagType; 3260 3261 switch (type) { 3262 case PROVISIONING: 3263 tagType = TAG_PROVISIONING_URL; 3264 break; 3265 case REDIRECTED_PROVISIONING: 3266 tagType = TAG_REDIRECTED_URL; 3267 break; 3268 default: 3269 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3270 type); 3271 } 3272 3273 try { 3274 fileReader = new FileReader(mProvisioningUrlFile); 3275 parser = Xml.newPullParser(); 3276 parser.setInput(fileReader); 3277 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3278 3279 while (true) { 3280 XmlUtils.nextElement(parser); 3281 3282 String element = parser.getName(); 3283 if (element == null) break; 3284 3285 if (element.equals(tagType)) { 3286 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3287 try { 3288 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3289 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3290 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3291 parser.next(); 3292 if (parser.getEventType() == XmlPullParser.TEXT) { 3293 return parser.getText(); 3294 } 3295 } 3296 } 3297 } catch (NumberFormatException e) { 3298 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3299 } 3300 } 3301 } 3302 return null; 3303 } catch (FileNotFoundException e) { 3304 loge("Carrier Provisioning Urls file not found"); 3305 } catch (XmlPullParserException e) { 3306 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3307 } catch (IOException e) { 3308 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3309 } finally { 3310 if (fileReader != null) { 3311 try { 3312 fileReader.close(); 3313 } catch (IOException e) {} 3314 } 3315 } 3316 return null; 3317 } 3318 3319 @Override 3320 public String getMobileRedirectedProvisioningUrl() { 3321 enforceConnectivityInternalPermission(); 3322 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3323 if (TextUtils.isEmpty(url)) { 3324 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3325 } 3326 return url; 3327 } 3328 3329 @Override 3330 public String getMobileProvisioningUrl() { 3331 enforceConnectivityInternalPermission(); 3332 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3333 if (TextUtils.isEmpty(url)) { 3334 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3335 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3336 } else { 3337 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3338 } 3339 // populate the iccid, imei and phone number in the provisioning url. 3340 if (!TextUtils.isEmpty(url)) { 3341 String phoneNumber = mTelephonyManager.getLine1Number(); 3342 if (TextUtils.isEmpty(phoneNumber)) { 3343 phoneNumber = "0000000000"; 3344 } 3345 url = String.format(url, 3346 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3347 mTelephonyManager.getDeviceId() /* IMEI */, 3348 phoneNumber /* Phone numer */); 3349 } 3350 3351 return url; 3352 } 3353 3354 @Override 3355 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3356 String action) { 3357 enforceConnectivityInternalPermission(); 3358 final long ident = Binder.clearCallingIdentity(); 3359 try { 3360 setProvNotificationVisible(visible, networkType, action); 3361 } finally { 3362 Binder.restoreCallingIdentity(ident); 3363 } 3364 } 3365 3366 @Override 3367 public void setAirplaneMode(boolean enable) { 3368 enforceConnectivityInternalPermission(); 3369 final long ident = Binder.clearCallingIdentity(); 3370 try { 3371 final ContentResolver cr = mContext.getContentResolver(); 3372 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3373 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3374 intent.putExtra("state", enable); 3375 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3376 } finally { 3377 Binder.restoreCallingIdentity(ident); 3378 } 3379 } 3380 3381 private void onUserStart(int userId) { 3382 synchronized(mVpns) { 3383 Vpn userVpn = mVpns.get(userId); 3384 if (userVpn != null) { 3385 loge("Starting user already has a VPN"); 3386 return; 3387 } 3388 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3389 mVpns.put(userId, userVpn); 3390 } 3391 } 3392 3393 private void onUserStop(int userId) { 3394 synchronized(mVpns) { 3395 Vpn userVpn = mVpns.get(userId); 3396 if (userVpn == null) { 3397 loge("Stopping user has no VPN"); 3398 return; 3399 } 3400 mVpns.delete(userId); 3401 } 3402 } 3403 3404 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3405 @Override 3406 public void onReceive(Context context, Intent intent) { 3407 final String action = intent.getAction(); 3408 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3409 if (userId == UserHandle.USER_NULL) return; 3410 3411 if (Intent.ACTION_USER_STARTING.equals(action)) { 3412 onUserStart(userId); 3413 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3414 onUserStop(userId); 3415 } 3416 } 3417 }; 3418 3419 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3420 new HashMap<Messenger, NetworkFactoryInfo>(); 3421 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3422 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3423 3424 private static class NetworkFactoryInfo { 3425 public final String name; 3426 public final Messenger messenger; 3427 public final AsyncChannel asyncChannel; 3428 3429 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3430 this.name = name; 3431 this.messenger = messenger; 3432 this.asyncChannel = asyncChannel; 3433 } 3434 } 3435 3436 /** 3437 * Tracks info about the requester. 3438 * Also used to notice when the calling process dies so we can self-expire 3439 */ 3440 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3441 static final boolean REQUEST = true; 3442 static final boolean LISTEN = false; 3443 3444 final NetworkRequest request; 3445 final PendingIntent mPendingIntent; 3446 boolean mPendingIntentSent; 3447 private final IBinder mBinder; 3448 final int mPid; 3449 final int mUid; 3450 final Messenger messenger; 3451 final boolean isRequest; 3452 3453 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3454 request = r; 3455 mPendingIntent = pi; 3456 messenger = null; 3457 mBinder = null; 3458 mPid = getCallingPid(); 3459 mUid = getCallingUid(); 3460 this.isRequest = isRequest; 3461 } 3462 3463 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3464 super(); 3465 messenger = m; 3466 request = r; 3467 mBinder = binder; 3468 mPid = getCallingPid(); 3469 mUid = getCallingUid(); 3470 this.isRequest = isRequest; 3471 mPendingIntent = null; 3472 3473 try { 3474 mBinder.linkToDeath(this, 0); 3475 } catch (RemoteException e) { 3476 binderDied(); 3477 } 3478 } 3479 3480 void unlinkDeathRecipient() { 3481 if (mBinder != null) { 3482 mBinder.unlinkToDeath(this, 0); 3483 } 3484 } 3485 3486 public void binderDied() { 3487 log("ConnectivityService NetworkRequestInfo binderDied(" + 3488 request + ", " + mBinder + ")"); 3489 releaseNetworkRequest(request); 3490 } 3491 3492 public String toString() { 3493 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3494 mPid + " for " + request + 3495 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3496 } 3497 } 3498 3499 @Override 3500 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3501 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3502 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3503 enforceNetworkRequestPermissions(networkCapabilities); 3504 enforceMeteredApnPolicy(networkCapabilities); 3505 3506 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3507 throw new IllegalArgumentException("Bad timeout specified"); 3508 } 3509 3510 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3511 nextNetworkRequestId()); 3512 if (DBG) log("requestNetwork for " + networkRequest); 3513 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3514 NetworkRequestInfo.REQUEST); 3515 3516 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3517 if (timeoutMs > 0) { 3518 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3519 nri), timeoutMs); 3520 } 3521 return networkRequest; 3522 } 3523 3524 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3525 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3526 enforceConnectivityInternalPermission(); 3527 } else { 3528 enforceChangePermission(); 3529 } 3530 } 3531 3532 @Override 3533 public boolean requestBandwidthUpdate(Network network) { 3534 enforceAccessPermission(); 3535 NetworkAgentInfo nai = null; 3536 if (network == null) { 3537 return false; 3538 } 3539 synchronized (mNetworkForNetId) { 3540 nai = mNetworkForNetId.get(network.netId); 3541 } 3542 if (nai != null) { 3543 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3544 return true; 3545 } 3546 return false; 3547 } 3548 3549 3550 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3551 // if UID is restricted, don't allow them to bring up metered APNs 3552 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3553 final int uidRules; 3554 final int uid = Binder.getCallingUid(); 3555 synchronized(mRulesLock) { 3556 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3557 } 3558 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3559 // we could silently fail or we can filter the available nets to only give 3560 // them those they have access to. Chose the more useful 3561 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3562 } 3563 } 3564 } 3565 3566 @Override 3567 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3568 PendingIntent operation) { 3569 checkNotNull(operation, "PendingIntent cannot be null."); 3570 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3571 enforceNetworkRequestPermissions(networkCapabilities); 3572 enforceMeteredApnPolicy(networkCapabilities); 3573 3574 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3575 nextNetworkRequestId()); 3576 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3577 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3578 NetworkRequestInfo.REQUEST); 3579 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3580 nri)); 3581 return networkRequest; 3582 } 3583 3584 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3585 mHandler.sendMessageDelayed( 3586 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3587 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3588 } 3589 3590 @Override 3591 public void releasePendingNetworkRequest(PendingIntent operation) { 3592 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3593 getCallingUid(), 0, operation)); 3594 } 3595 3596 // In order to implement the compatibility measure for pre-M apps that call 3597 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3598 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3599 // This ensures it has permission to do so. 3600 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3601 if (nc == null) { 3602 return false; 3603 } 3604 int[] transportTypes = nc.getTransportTypes(); 3605 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3606 return false; 3607 } 3608 try { 3609 mContext.enforceCallingOrSelfPermission( 3610 android.Manifest.permission.ACCESS_WIFI_STATE, 3611 "ConnectivityService"); 3612 } catch (SecurityException e) { 3613 return false; 3614 } 3615 return true; 3616 } 3617 3618 @Override 3619 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3620 Messenger messenger, IBinder binder) { 3621 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3622 enforceAccessPermission(); 3623 } 3624 3625 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3626 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3627 if (DBG) log("listenForNetwork for " + networkRequest); 3628 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3629 NetworkRequestInfo.LISTEN); 3630 3631 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3632 return networkRequest; 3633 } 3634 3635 @Override 3636 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3637 PendingIntent operation) { 3638 } 3639 3640 @Override 3641 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3642 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3643 0, networkRequest)); 3644 } 3645 3646 @Override 3647 public void registerNetworkFactory(Messenger messenger, String name) { 3648 enforceConnectivityInternalPermission(); 3649 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3650 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3651 } 3652 3653 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3654 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3655 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3656 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3657 } 3658 3659 @Override 3660 public void unregisterNetworkFactory(Messenger messenger) { 3661 enforceConnectivityInternalPermission(); 3662 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3663 } 3664 3665 private void handleUnregisterNetworkFactory(Messenger messenger) { 3666 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3667 if (nfi == null) { 3668 loge("Failed to find Messenger in unregisterNetworkFactory"); 3669 return; 3670 } 3671 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3672 } 3673 3674 /** 3675 * NetworkAgentInfo supporting a request by requestId. 3676 * These have already been vetted (their Capabilities satisfy the request) 3677 * and the are the highest scored network available. 3678 * the are keyed off the Requests requestId. 3679 */ 3680 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3681 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3682 new SparseArray<NetworkAgentInfo>(); 3683 3684 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3685 @GuardedBy("mNetworkForNetId") 3686 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3687 new SparseArray<NetworkAgentInfo>(); 3688 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3689 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3690 // there may not be a strict 1:1 correlation between the two. 3691 @GuardedBy("mNetworkForNetId") 3692 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3693 3694 // NetworkAgentInfo keyed off its connecting messenger 3695 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3696 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3697 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3698 new HashMap<Messenger, NetworkAgentInfo>(); 3699 3700 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3701 private final NetworkRequest mDefaultRequest; 3702 3703 // Request used to optionally keep mobile data active even when higher 3704 // priority networks like Wi-Fi are active. 3705 private final NetworkRequest mDefaultMobileDataRequest; 3706 3707 private NetworkAgentInfo getDefaultNetwork() { 3708 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3709 } 3710 3711 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3712 return nai == getDefaultNetwork(); 3713 } 3714 3715 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3716 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3717 int currentScore, NetworkMisc networkMisc) { 3718 enforceConnectivityInternalPermission(); 3719 3720 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3721 // satisfies mDefaultRequest. 3722 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3723 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3724 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3725 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3726 synchronized (this) { 3727 nai.networkMonitor.systemReady = mSystemReady; 3728 } 3729 if (DBG) log("registerNetworkAgent " + nai); 3730 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3731 return nai.network.netId; 3732 } 3733 3734 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3735 if (VDBG) log("Got NetworkAgent Messenger"); 3736 mNetworkAgentInfos.put(na.messenger, na); 3737 synchronized (mNetworkForNetId) { 3738 mNetworkForNetId.put(na.network.netId, na); 3739 } 3740 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3741 NetworkInfo networkInfo = na.networkInfo; 3742 na.networkInfo = null; 3743 updateNetworkInfo(na, networkInfo); 3744 } 3745 3746 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3747 LinkProperties newLp = networkAgent.linkProperties; 3748 int netId = networkAgent.network.netId; 3749 3750 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3751 // we do anything else, make sure its LinkProperties are accurate. 3752 if (networkAgent.clatd != null) { 3753 networkAgent.clatd.fixupLinkProperties(oldLp); 3754 } 3755 3756 updateInterfaces(newLp, oldLp, netId); 3757 updateMtu(newLp, oldLp); 3758 // TODO - figure out what to do for clat 3759// for (LinkProperties lp : newLp.getStackedLinks()) { 3760// updateMtu(lp, null); 3761// } 3762 updateTcpBufferSizes(networkAgent); 3763 3764 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3765 // For now, use it only when the network has Internet access. http://b/18327075 3766 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3767 NET_CAPABILITY_INTERNET); 3768 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3769 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3770 3771 updateClat(newLp, oldLp, networkAgent); 3772 if (isDefaultNetwork(networkAgent)) { 3773 handleApplyDefaultProxy(newLp.getHttpProxy()); 3774 } else { 3775 updateProxy(newLp, oldLp, networkAgent); 3776 } 3777 // TODO - move this check to cover the whole function 3778 if (!Objects.equals(newLp, oldLp)) { 3779 notifyIfacesChanged(); 3780 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3781 } 3782 } 3783 3784 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3785 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3786 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3787 3788 if (!wasRunningClat && shouldRunClat) { 3789 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3790 nai.clatd.start(); 3791 } else if (wasRunningClat && !shouldRunClat) { 3792 nai.clatd.stop(); 3793 } 3794 } 3795 3796 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3797 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3798 if (oldLp != null) { 3799 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3800 } else if (newLp != null) { 3801 interfaceDiff.added = newLp.getAllInterfaceNames(); 3802 } 3803 for (String iface : interfaceDiff.added) { 3804 try { 3805 if (DBG) log("Adding iface " + iface + " to network " + netId); 3806 mNetd.addInterfaceToNetwork(iface, netId); 3807 } catch (Exception e) { 3808 loge("Exception adding interface: " + e); 3809 } 3810 } 3811 for (String iface : interfaceDiff.removed) { 3812 try { 3813 if (DBG) log("Removing iface " + iface + " from network " + netId); 3814 mNetd.removeInterfaceFromNetwork(iface, netId); 3815 } catch (Exception e) { 3816 loge("Exception removing interface: " + e); 3817 } 3818 } 3819 } 3820 3821 /** 3822 * Have netd update routes from oldLp to newLp. 3823 * @return true if routes changed between oldLp and newLp 3824 */ 3825 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3826 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3827 if (oldLp != null) { 3828 routeDiff = oldLp.compareAllRoutes(newLp); 3829 } else if (newLp != null) { 3830 routeDiff.added = newLp.getAllRoutes(); 3831 } 3832 3833 // add routes before removing old in case it helps with continuous connectivity 3834 3835 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3836 for (RouteInfo route : routeDiff.added) { 3837 if (route.hasGateway()) continue; 3838 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3839 try { 3840 mNetd.addRoute(netId, route); 3841 } catch (Exception e) { 3842 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3843 loge("Exception in addRoute for non-gateway: " + e); 3844 } 3845 } 3846 } 3847 for (RouteInfo route : routeDiff.added) { 3848 if (route.hasGateway() == false) continue; 3849 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3850 try { 3851 mNetd.addRoute(netId, route); 3852 } catch (Exception e) { 3853 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3854 loge("Exception in addRoute for gateway: " + e); 3855 } 3856 } 3857 } 3858 3859 for (RouteInfo route : routeDiff.removed) { 3860 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3861 try { 3862 mNetd.removeRoute(netId, route); 3863 } catch (Exception e) { 3864 loge("Exception in removeRoute: " + e); 3865 } 3866 } 3867 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3868 } 3869 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3870 boolean flush, boolean useDefaultDns) { 3871 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3872 Collection<InetAddress> dnses = newLp.getDnsServers(); 3873 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3874 dnses = new ArrayList(); 3875 dnses.add(mDefaultDns); 3876 if (DBG) { 3877 loge("no dns provided for netId " + netId + ", so using defaults"); 3878 } 3879 } 3880 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3881 try { 3882 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3883 newLp.getDomains()); 3884 } catch (Exception e) { 3885 loge("Exception in setDnsServersForNetwork: " + e); 3886 } 3887 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3888 if (defaultNai != null && defaultNai.network.netId == netId) { 3889 setDefaultDnsSystemProperties(dnses); 3890 } 3891 flushVmDnsCache(); 3892 } else if (flush) { 3893 try { 3894 mNetd.flushNetworkDnsCache(netId); 3895 } catch (Exception e) { 3896 loge("Exception in flushNetworkDnsCache: " + e); 3897 } 3898 flushVmDnsCache(); 3899 } 3900 } 3901 3902 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3903 int last = 0; 3904 for (InetAddress dns : dnses) { 3905 ++last; 3906 String key = "net.dns" + last; 3907 String value = dns.getHostAddress(); 3908 SystemProperties.set(key, value); 3909 } 3910 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3911 String key = "net.dns" + i; 3912 SystemProperties.set(key, ""); 3913 } 3914 mNumDnsEntries = last; 3915 } 3916 3917 private void updateCapabilities(NetworkAgentInfo networkAgent, 3918 NetworkCapabilities networkCapabilities) { 3919 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3920 synchronized (networkAgent) { 3921 networkAgent.networkCapabilities = networkCapabilities; 3922 } 3923 if (networkAgent.lastValidated) { 3924 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 3925 // There's no need to remove the capability if we think the network is unvalidated, 3926 // because NetworkAgents don't set the validated capability. 3927 } 3928 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3929 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3930 } 3931 } 3932 3933 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3934 for (int i = 0; i < nai.networkRequests.size(); i++) { 3935 NetworkRequest nr = nai.networkRequests.valueAt(i); 3936 // Don't send listening requests to factories. b/17393458 3937 if (!isRequest(nr)) continue; 3938 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3939 } 3940 } 3941 3942 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3943 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3944 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3945 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3946 networkRequest); 3947 } 3948 } 3949 3950 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3951 int notificationType) { 3952 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 3953 Intent intent = new Intent(); 3954 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3955 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3956 nri.mPendingIntentSent = true; 3957 sendIntent(nri.mPendingIntent, intent); 3958 } 3959 // else not handled 3960 } 3961 3962 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3963 mPendingIntentWakeLock.acquire(); 3964 try { 3965 if (DBG) log("Sending " + pendingIntent); 3966 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3967 } catch (PendingIntent.CanceledException e) { 3968 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3969 mPendingIntentWakeLock.release(); 3970 releasePendingNetworkRequest(pendingIntent); 3971 } 3972 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3973 } 3974 3975 @Override 3976 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3977 String resultData, Bundle resultExtras) { 3978 if (DBG) log("Finished sending " + pendingIntent); 3979 mPendingIntentWakeLock.release(); 3980 // Release with a delay so the receiving client has an opportunity to put in its 3981 // own request. 3982 releasePendingNetworkRequestWithDelay(pendingIntent); 3983 } 3984 3985 private void callCallbackForRequest(NetworkRequestInfo nri, 3986 NetworkAgentInfo networkAgent, int notificationType) { 3987 if (nri.messenger == null) return; // Default request has no msgr 3988 Bundle bundle = new Bundle(); 3989 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3990 new NetworkRequest(nri.request)); 3991 Message msg = Message.obtain(); 3992 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3993 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3994 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3995 } 3996 switch (notificationType) { 3997 case ConnectivityManager.CALLBACK_LOSING: { 3998 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3999 break; 4000 } 4001 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4002 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4003 new NetworkCapabilities(networkAgent.networkCapabilities)); 4004 break; 4005 } 4006 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4007 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4008 new LinkProperties(networkAgent.linkProperties)); 4009 break; 4010 } 4011 } 4012 msg.what = notificationType; 4013 msg.setData(bundle); 4014 try { 4015 if (VDBG) { 4016 log("sending notification " + notifyTypeToName(notificationType) + 4017 " for " + nri.request); 4018 } 4019 nri.messenger.send(msg); 4020 } catch (RemoteException e) { 4021 // may occur naturally in the race of binder death. 4022 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4023 } 4024 } 4025 4026 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4027 for (int i = 0; i < nai.networkRequests.size(); i++) { 4028 NetworkRequest nr = nai.networkRequests.valueAt(i); 4029 // Ignore listening requests. 4030 if (!isRequest(nr)) continue; 4031 loge("Dead network still had at least " + nr); 4032 break; 4033 } 4034 nai.asyncChannel.disconnect(); 4035 } 4036 4037 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4038 if (oldNetwork == null) { 4039 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4040 return; 4041 } 4042 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4043 teardownUnneededNetwork(oldNetwork); 4044 } 4045 4046 private void makeDefault(NetworkAgentInfo newNetwork) { 4047 if (DBG) log("Switching to new default network: " + newNetwork); 4048 setupDataActivityTracking(newNetwork); 4049 try { 4050 mNetd.setDefaultNetId(newNetwork.network.netId); 4051 } catch (Exception e) { 4052 loge("Exception setting default network :" + e); 4053 } 4054 notifyLockdownVpn(newNetwork); 4055 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4056 updateTcpBufferSizes(newNetwork); 4057 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4058 } 4059 4060 // Handles a network appearing or improving its score. 4061 // 4062 // - Evaluates all current NetworkRequests that can be 4063 // satisfied by newNetwork, and reassigns to newNetwork 4064 // any such requests for which newNetwork is the best. 4065 // 4066 // - Lingers any validated Networks that as a result are no longer 4067 // needed. A network is needed if it is the best network for 4068 // one or more NetworkRequests, or if it is a VPN. 4069 // 4070 // - Tears down newNetwork if it just became validated 4071 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4072 // 4073 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4074 // networks that have no chance (i.e. even if validated) 4075 // of becoming the highest scoring network. 4076 // 4077 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4078 // it does not remove NetworkRequests that other Networks could better satisfy. 4079 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4080 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4081 // as it performs better by a factor of the number of Networks. 4082 // 4083 // @param newNetwork is the network to be matched against NetworkRequests. 4084 // @param nascent indicates if newNetwork just became validated, in which case it should be 4085 // torn down if unneeded. 4086 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4087 // performed to tear down unvalidated networks that have no chance (i.e. even if 4088 // validated) of becoming the highest scoring network. 4089 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4090 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4091 if (!newNetwork.created) return; 4092 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4093 loge("ERROR: nascent network not validated."); 4094 } 4095 boolean keep = newNetwork.isVPN(); 4096 boolean isNewDefault = false; 4097 NetworkAgentInfo oldDefaultNetwork = null; 4098 if (DBG) log("rematching " + newNetwork.name()); 4099 // Find and migrate to this Network any NetworkRequests for 4100 // which this network is now the best. 4101 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4102 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4103 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4104 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4105 if (newNetwork == currentNetwork) { 4106 if (DBG) { 4107 log("Network " + newNetwork.name() + " was already satisfying" + 4108 " request " + nri.request.requestId + ". No change."); 4109 } 4110 keep = true; 4111 continue; 4112 } 4113 4114 // check if it satisfies the NetworkCapabilities 4115 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4116 if (newNetwork.satisfies(nri.request)) { 4117 if (!nri.isRequest) { 4118 // This is not a request, it's a callback listener. 4119 // Add it to newNetwork regardless of score. 4120 newNetwork.addRequest(nri.request); 4121 continue; 4122 } 4123 4124 // next check if it's better than any current network we're using for 4125 // this request 4126 if (VDBG) { 4127 log("currentScore = " + 4128 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4129 ", newScore = " + newNetwork.getCurrentScore()); 4130 } 4131 if (currentNetwork == null || 4132 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4133 if (currentNetwork != null) { 4134 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4135 currentNetwork.networkRequests.remove(nri.request.requestId); 4136 currentNetwork.networkLingered.add(nri.request); 4137 affectedNetworks.add(currentNetwork); 4138 } else { 4139 if (DBG) log(" accepting network in place of null"); 4140 } 4141 unlinger(newNetwork); 4142 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4143 newNetwork.addRequest(nri.request); 4144 keep = true; 4145 // Tell NetworkFactories about the new score, so they can stop 4146 // trying to connect if they know they cannot match it. 4147 // TODO - this could get expensive if we have alot of requests for this 4148 // network. Think about if there is a way to reduce this. Push 4149 // netid->request mapping to each factory? 4150 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4151 if (mDefaultRequest.requestId == nri.request.requestId) { 4152 isNewDefault = true; 4153 oldDefaultNetwork = currentNetwork; 4154 } 4155 } 4156 } 4157 } 4158 // Linger any networks that are no longer needed. 4159 for (NetworkAgentInfo nai : affectedNetworks) { 4160 if (nai.everValidated && unneeded(nai)) { 4161 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4162 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4163 } else { 4164 unlinger(nai); 4165 } 4166 } 4167 if (keep) { 4168 if (isNewDefault) { 4169 // Notify system services that this network is up. 4170 makeDefault(newNetwork); 4171 synchronized (ConnectivityService.this) { 4172 // have a new default network, release the transition wakelock in 4173 // a second if it's held. The second pause is to allow apps 4174 // to reconnect over the new network 4175 if (mNetTransitionWakeLock.isHeld()) { 4176 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4177 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4178 mNetTransitionWakeLockSerialNumber, 0), 4179 1000); 4180 } 4181 } 4182 } 4183 4184 // do this after the default net is switched, but 4185 // before LegacyTypeTracker sends legacy broadcasts 4186 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4187 4188 if (isNewDefault) { 4189 // Maintain the illusion: since the legacy API only 4190 // understands one network at a time, we must pretend 4191 // that the current default network disconnected before 4192 // the new one connected. 4193 if (oldDefaultNetwork != null) { 4194 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4195 oldDefaultNetwork, true); 4196 } 4197 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4198 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4199 notifyLockdownVpn(newNetwork); 4200 } 4201 4202 // Notify battery stats service about this network, both the normal 4203 // interface and any stacked links. 4204 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4205 try { 4206 final IBatteryStats bs = BatteryStatsService.getService(); 4207 final int type = newNetwork.networkInfo.getType(); 4208 4209 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4210 bs.noteNetworkInterfaceType(baseIface, type); 4211 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4212 final String stackedIface = stacked.getInterfaceName(); 4213 bs.noteNetworkInterfaceType(stackedIface, type); 4214 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4215 } 4216 } catch (RemoteException ignored) { 4217 } 4218 4219 // This has to happen after the notifyNetworkCallbacks as that tickles each 4220 // ConnectivityManager instance so that legacy requests correctly bind dns 4221 // requests to this network. The legacy users are listening for this bcast 4222 // and will generally do a dns request so they can ensureRouteToHost and if 4223 // they do that before the callbacks happen they'll use the default network. 4224 // 4225 // TODO: Is there still a race here? We send the broadcast 4226 // after sending the callback, but if the app can receive the 4227 // broadcast before the callback, it might still break. 4228 // 4229 // This *does* introduce a race where if the user uses the new api 4230 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4231 // they may get old info. Reverse this after the old startUsing api is removed. 4232 // This is on top of the multiple intent sequencing referenced in the todo above. 4233 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4234 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4235 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4236 // legacy type tracker filters out repeat adds 4237 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4238 } 4239 } 4240 4241 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4242 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4243 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4244 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4245 if (newNetwork.isVPN()) { 4246 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4247 } 4248 } else if (nascent == NascentState.JUST_VALIDATED) { 4249 // Only tear down newly validated networks here. Leave unvalidated to either become 4250 // validated (and get evaluated against peers, one losing here), or get reaped (see 4251 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4252 // network. Networks that have been up for a while and are validated should be torn 4253 // down via the lingering process so communication on that network is given time to 4254 // wrap up. 4255 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4256 teardownUnneededNetwork(newNetwork); 4257 } 4258 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4259 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4260 if (!nai.everValidated && unneeded(nai)) { 4261 if (DBG) log("Reaping " + nai.name()); 4262 teardownUnneededNetwork(nai); 4263 } 4264 } 4265 } 4266 } 4267 4268 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4269 // being disconnected. 4270 // If only one Network's score or capabilities have been modified since the last time 4271 // this function was called, pass this Network in via the "changed" arugment, otherwise 4272 // pass null. 4273 // If only one Network has been changed but its NetworkCapabilities have not changed, 4274 // pass in the Network's score (from getCurrentScore()) prior to the change via 4275 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4276 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4277 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4278 // to avoid the slowness. It is not simply enough to process just "changed", for 4279 // example in the case where "changed"'s score decreases and another network should begin 4280 // satifying a NetworkRequest that "changed" currently satisfies. 4281 4282 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4283 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4284 // rematchNetworkAndRequests() handles. 4285 if (changed != null && oldScore < changed.getCurrentScore()) { 4286 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4287 ReapUnvalidatedNetworks.REAP); 4288 } else { 4289 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4290 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4291 NascentState.NOT_JUST_VALIDATED, 4292 // Only reap the last time through the loop. Reaping before all rematching 4293 // is complete could incorrectly teardown a network that hasn't yet been 4294 // rematched. 4295 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4296 : ReapUnvalidatedNetworks.REAP); 4297 } 4298 } 4299 } 4300 4301 private void updateInetCondition(NetworkAgentInfo nai) { 4302 // Don't bother updating until we've graduated to validated at least once. 4303 if (!nai.everValidated) return; 4304 // For now only update icons for default connection. 4305 // TODO: Update WiFi and cellular icons separately. b/17237507 4306 if (!isDefaultNetwork(nai)) return; 4307 4308 int newInetCondition = nai.lastValidated ? 100 : 0; 4309 // Don't repeat publish. 4310 if (newInetCondition == mDefaultInetConditionPublished) return; 4311 4312 mDefaultInetConditionPublished = newInetCondition; 4313 sendInetConditionBroadcast(nai.networkInfo); 4314 } 4315 4316 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4317 if (mLockdownTracker != null) { 4318 if (nai != null && nai.isVPN()) { 4319 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4320 } else { 4321 mLockdownTracker.onNetworkInfoChanged(); 4322 } 4323 } 4324 } 4325 4326 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4327 NetworkInfo.State state = newInfo.getState(); 4328 NetworkInfo oldInfo = null; 4329 synchronized (networkAgent) { 4330 oldInfo = networkAgent.networkInfo; 4331 networkAgent.networkInfo = newInfo; 4332 } 4333 notifyLockdownVpn(networkAgent); 4334 4335 if (oldInfo != null && oldInfo.getState() == state) { 4336 if (VDBG) log("ignoring duplicate network state non-change"); 4337 return; 4338 } 4339 if (DBG) { 4340 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4341 (oldInfo == null ? "null" : oldInfo.getState()) + 4342 " to " + state); 4343 } 4344 4345 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4346 try { 4347 // This should never fail. Specifying an already in use NetID will cause failure. 4348 if (networkAgent.isVPN()) { 4349 mNetd.createVirtualNetwork(networkAgent.network.netId, 4350 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4351 (networkAgent.networkMisc == null || 4352 !networkAgent.networkMisc.allowBypass)); 4353 } else { 4354 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4355 } 4356 } catch (Exception e) { 4357 loge("Error creating network " + networkAgent.network.netId + ": " 4358 + e.getMessage()); 4359 return; 4360 } 4361 networkAgent.created = true; 4362 updateLinkProperties(networkAgent, null); 4363 notifyIfacesChanged(); 4364 4365 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4366 scheduleUnvalidatedPrompt(networkAgent); 4367 4368 if (networkAgent.isVPN()) { 4369 // Temporarily disable the default proxy (not global). 4370 synchronized (mProxyLock) { 4371 if (!mDefaultProxyDisabled) { 4372 mDefaultProxyDisabled = true; 4373 if (mGlobalProxy == null && mDefaultProxy != null) { 4374 sendProxyBroadcast(null); 4375 } 4376 } 4377 } 4378 // TODO: support proxy per network. 4379 } 4380 4381 // Consider network even though it is not yet validated. 4382 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4383 ReapUnvalidatedNetworks.REAP); 4384 4385 // This has to happen after matching the requests, because callbacks are just requests. 4386 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4387 } else if (state == NetworkInfo.State.DISCONNECTED || 4388 state == NetworkInfo.State.SUSPENDED) { 4389 networkAgent.asyncChannel.disconnect(); 4390 if (networkAgent.isVPN()) { 4391 synchronized (mProxyLock) { 4392 if (mDefaultProxyDisabled) { 4393 mDefaultProxyDisabled = false; 4394 if (mGlobalProxy == null && mDefaultProxy != null) { 4395 sendProxyBroadcast(mDefaultProxy); 4396 } 4397 } 4398 } 4399 } 4400 } 4401 } 4402 4403 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4404 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4405 if (score < 0) { 4406 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4407 "). Bumping score to min of 0"); 4408 score = 0; 4409 } 4410 4411 final int oldScore = nai.getCurrentScore(); 4412 nai.setCurrentScore(score); 4413 4414 rematchAllNetworksAndRequests(nai, oldScore); 4415 4416 sendUpdatedScoreToFactories(nai); 4417 } 4418 4419 // notify only this one new request of the current state 4420 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4421 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4422 // TODO - read state from monitor to decide what to send. 4423// if (nai.networkMonitor.isLingering()) { 4424// notifyType = NetworkCallbacks.LOSING; 4425// } else if (nai.networkMonitor.isEvaluating()) { 4426// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4427// } 4428 if (nri.mPendingIntent == null) { 4429 callCallbackForRequest(nri, nai, notifyType); 4430 } else { 4431 sendPendingIntentForRequest(nri, nai, notifyType); 4432 } 4433 } 4434 4435 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4436 // The NetworkInfo we actually send out has no bearing on the real 4437 // state of affairs. For example, if the default connection is mobile, 4438 // and a request for HIPRI has just gone away, we need to pretend that 4439 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4440 // the state to DISCONNECTED, even though the network is of type MOBILE 4441 // and is still connected. 4442 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4443 info.setType(type); 4444 if (connected) { 4445 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4446 sendConnectedBroadcast(info); 4447 } else { 4448 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4449 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4450 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4451 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4452 if (info.isFailover()) { 4453 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4454 nai.networkInfo.setFailover(false); 4455 } 4456 if (info.getReason() != null) { 4457 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4458 } 4459 if (info.getExtraInfo() != null) { 4460 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4461 } 4462 NetworkAgentInfo newDefaultAgent = null; 4463 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4464 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4465 if (newDefaultAgent != null) { 4466 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4467 newDefaultAgent.networkInfo); 4468 } else { 4469 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4470 } 4471 } 4472 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4473 mDefaultInetConditionPublished); 4474 sendStickyBroadcast(intent); 4475 if (newDefaultAgent != null) { 4476 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4477 } 4478 } 4479 } 4480 4481 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4482 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4483 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4484 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4485 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4486 if (VDBG) log(" sending notification for " + nr); 4487 if (nri.mPendingIntent == null) { 4488 callCallbackForRequest(nri, networkAgent, notifyType); 4489 } else { 4490 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4491 } 4492 } 4493 } 4494 4495 private String notifyTypeToName(int notifyType) { 4496 switch (notifyType) { 4497 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4498 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4499 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4500 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4501 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4502 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4503 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4504 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4505 } 4506 return "UNKNOWN"; 4507 } 4508 4509 /** 4510 * Notify other system services that set of active ifaces has changed. 4511 */ 4512 private void notifyIfacesChanged() { 4513 try { 4514 mStatsService.forceUpdateIfaces(); 4515 } catch (Exception ignored) { 4516 } 4517 } 4518 4519 @Override 4520 public boolean addVpnAddress(String address, int prefixLength) { 4521 throwIfLockdownEnabled(); 4522 int user = UserHandle.getUserId(Binder.getCallingUid()); 4523 synchronized (mVpns) { 4524 return mVpns.get(user).addAddress(address, prefixLength); 4525 } 4526 } 4527 4528 @Override 4529 public boolean removeVpnAddress(String address, int prefixLength) { 4530 throwIfLockdownEnabled(); 4531 int user = UserHandle.getUserId(Binder.getCallingUid()); 4532 synchronized (mVpns) { 4533 return mVpns.get(user).removeAddress(address, prefixLength); 4534 } 4535 } 4536 4537 @Override 4538 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4539 throwIfLockdownEnabled(); 4540 int user = UserHandle.getUserId(Binder.getCallingUid()); 4541 boolean success; 4542 synchronized (mVpns) { 4543 success = mVpns.get(user).setUnderlyingNetworks(networks); 4544 } 4545 if (success) { 4546 notifyIfacesChanged(); 4547 } 4548 return success; 4549 } 4550 4551 @Override 4552 public void factoryReset() { 4553 enforceConnectivityInternalPermission(); 4554 // Turn airplane mode off 4555 setAirplaneMode(false); 4556 4557 // Untether 4558 for (String tether : getTetheredIfaces()) { 4559 untether(tether); 4560 } 4561 4562 // Turn VPN off 4563 VpnConfig vpnConfig = getVpnConfig(); 4564 if (vpnConfig != null) { 4565 if (vpnConfig.legacy) { 4566 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN); 4567 } else { 4568 // Prevent this app from initiating VPN connections in the future without 4569 // user intervention. 4570 setVpnPackageAuthorization(false); 4571 4572 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN); 4573 } 4574 } 4575 } 4576} 4577