ConnectivityService.java revision e75b9e355500b7c6a05e4d6ec54ef48835707caa
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.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_NONE; 24import static android.net.ConnectivityManager.TYPE_VPN; 25import static android.net.ConnectivityManager.getNetworkTypeName; 26import static android.net.ConnectivityManager.isNetworkTypeValid; 27import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 28import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 29 30import android.app.AlarmManager; 31import android.app.Notification; 32import android.app.NotificationManager; 33import android.app.PendingIntent; 34import android.content.BroadcastReceiver; 35import android.content.ContentResolver; 36import android.content.Context; 37import android.content.Intent; 38import android.content.IntentFilter; 39import android.content.pm.PackageManager; 40import android.content.res.Configuration; 41import android.content.res.Resources; 42import android.database.ContentObserver; 43import android.net.ConnectivityManager; 44import android.net.IConnectivityManager; 45import android.net.INetworkManagementEventObserver; 46import android.net.INetworkPolicyListener; 47import android.net.INetworkPolicyManager; 48import android.net.INetworkStatsService; 49import android.net.LinkProperties; 50import android.net.LinkProperties.CompareResult; 51import android.net.Network; 52import android.net.NetworkAgent; 53import android.net.NetworkCapabilities; 54import android.net.NetworkConfig; 55import android.net.NetworkInfo; 56import android.net.NetworkInfo.DetailedState; 57import android.net.NetworkMisc; 58import android.net.NetworkQuotaInfo; 59import android.net.NetworkRequest; 60import android.net.NetworkState; 61import android.net.NetworkUtils; 62import android.net.Proxy; 63import android.net.ProxyInfo; 64import android.net.RouteInfo; 65import android.net.UidRange; 66import android.net.Uri; 67import android.os.Binder; 68import android.os.Bundle; 69import android.os.FileUtils; 70import android.os.Handler; 71import android.os.HandlerThread; 72import android.os.IBinder; 73import android.os.INetworkManagementService; 74import android.os.Looper; 75import android.os.Message; 76import android.os.Messenger; 77import android.os.ParcelFileDescriptor; 78import android.os.PowerManager; 79import android.os.Process; 80import android.os.RemoteException; 81import android.os.SystemClock; 82import android.os.SystemProperties; 83import android.os.UserHandle; 84import android.os.UserManager; 85import android.provider.Settings; 86import android.security.Credentials; 87import android.security.KeyStore; 88import android.telephony.TelephonyManager; 89import android.text.TextUtils; 90import android.util.Slog; 91import android.util.SparseArray; 92import android.util.SparseIntArray; 93import android.util.Xml; 94 95import com.android.internal.R; 96import com.android.internal.annotations.GuardedBy; 97import com.android.internal.app.IBatteryStats; 98import com.android.internal.net.LegacyVpnInfo; 99import com.android.internal.net.NetworkStatsFactory; 100import com.android.internal.net.VpnConfig; 101import com.android.internal.net.VpnProfile; 102import com.android.internal.telephony.DctConstants; 103import com.android.internal.util.AsyncChannel; 104import com.android.internal.util.IndentingPrintWriter; 105import com.android.internal.util.XmlUtils; 106import com.android.server.am.BatteryStatsService; 107import com.android.server.connectivity.DataConnectionStats; 108import com.android.server.connectivity.Nat464Xlat; 109import com.android.server.connectivity.NetworkAgentInfo; 110import com.android.server.connectivity.NetworkMonitor; 111import com.android.server.connectivity.PacManager; 112import com.android.server.connectivity.PermissionMonitor; 113import com.android.server.connectivity.Tethering; 114import com.android.server.connectivity.Vpn; 115import com.android.server.net.BaseNetworkObserver; 116import com.android.server.net.LockdownVpnTracker; 117import com.google.android.collect.Lists; 118import com.google.android.collect.Sets; 119 120import org.xmlpull.v1.XmlPullParser; 121import org.xmlpull.v1.XmlPullParserException; 122 123import java.io.File; 124import java.io.FileDescriptor; 125import java.io.FileNotFoundException; 126import java.io.FileReader; 127import java.io.IOException; 128import java.io.PrintWriter; 129import java.net.Inet4Address; 130import java.net.InetAddress; 131import java.net.UnknownHostException; 132import java.util.ArrayList; 133import java.util.Arrays; 134import java.util.Collection; 135import java.util.HashMap; 136import java.util.HashSet; 137import java.util.Iterator; 138import java.util.List; 139import java.util.Map; 140import java.util.Objects; 141import java.util.concurrent.atomic.AtomicInteger; 142 143/** 144 * @hide 145 */ 146public class ConnectivityService extends IConnectivityManager.Stub 147 implements PendingIntent.OnFinished { 148 private static final String TAG = "ConnectivityService"; 149 150 private static final boolean DBG = true; 151 private static final boolean VDBG = false; 152 153 private static final boolean LOGD_RULES = false; 154 155 // TODO: create better separation between radio types and network types 156 157 // how long to wait before switching back to a radio's default network 158 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 159 // system property that can override the above value 160 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 161 "android.telephony.apn-restore"; 162 163 // How long to delay to removal of a pending intent based request. 164 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 165 private final int mReleasePendingIntentDelayMs; 166 167 private Tethering mTethering; 168 169 private final PermissionMonitor mPermissionMonitor; 170 171 private KeyStore mKeyStore; 172 173 @GuardedBy("mVpns") 174 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 175 176 private boolean mLockdownEnabled; 177 private LockdownVpnTracker mLockdownTracker; 178 179 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 180 private Object mRulesLock = new Object(); 181 /** Currently active network rules by UID. */ 182 private SparseIntArray mUidRules = new SparseIntArray(); 183 /** Set of ifaces that are costly. */ 184 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 185 186 private Context mContext; 187 private int mNetworkPreference; 188 // 0 is full bad, 100 is full good 189 private int mDefaultInetConditionPublished = 0; 190 191 private Object mDnsLock = new Object(); 192 private int mNumDnsEntries; 193 194 private boolean mTestMode; 195 private static ConnectivityService sServiceInstance; 196 197 private INetworkManagementService mNetd; 198 private INetworkStatsService mStatsService; 199 private INetworkPolicyManager mPolicyManager; 200 201 private String mCurrentTcpBufferSizes; 202 203 private static final int ENABLED = 1; 204 private static final int DISABLED = 0; 205 206 // Arguments to rematchNetworkAndRequests() 207 private enum NascentState { 208 // Indicates a network was just validated for the first time. If the network is found to 209 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 210 JUST_VALIDATED, 211 // Indicates a network was not validated for the first time immediately prior to this call. 212 NOT_JUST_VALIDATED 213 }; 214 private enum ReapUnvalidatedNetworks { 215 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 216 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 217 // known that there may be unvalidated networks that could potentially be reaped, and when 218 // all networks have been rematched against all NetworkRequests. 219 REAP, 220 // Don't reap unvalidated networks. This should be passed when it's known that there are 221 // no unvalidated networks that could potentially be reaped, and when some networks have 222 // not yet been rematched against all NetworkRequests. 223 DONT_REAP 224 }; 225 226 /** 227 * used internally to change our mobile data enabled flag 228 */ 229 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 230 231 /** 232 * used internally to clear a wakelock when transitioning 233 * from one net to another. Clear happens when we get a new 234 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 235 * after a timeout if no network is found (typically 1 min). 236 */ 237 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 238 239 /** 240 * used internally to reload global proxy settings 241 */ 242 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 243 244 /** 245 * used internally to send a sticky broadcast delayed. 246 */ 247 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 248 249 /** 250 * PAC manager has received new port. 251 */ 252 private static final int EVENT_PROXY_HAS_CHANGED = 16; 253 254 /** 255 * used internally when registering NetworkFactories 256 * obj = NetworkFactoryInfo 257 */ 258 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 259 260 /** 261 * used internally when registering NetworkAgents 262 * obj = Messenger 263 */ 264 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 265 266 /** 267 * used to add a network request 268 * includes a NetworkRequestInfo 269 */ 270 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 271 272 /** 273 * indicates a timeout period is over - check if we had a network yet or not 274 * and if not, call the timeout calback (but leave the request live until they 275 * cancel it. 276 * includes a NetworkRequestInfo 277 */ 278 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 279 280 /** 281 * used to add a network listener - no request 282 * includes a NetworkRequestInfo 283 */ 284 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 285 286 /** 287 * used to remove a network request, either a listener or a real request 288 * arg1 = UID of caller 289 * obj = NetworkRequest 290 */ 291 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 292 293 /** 294 * used internally when registering NetworkFactories 295 * obj = Messenger 296 */ 297 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 298 299 /** 300 * used internally to expire a wakelock when transitioning 301 * from one net to another. Expire happens when we fail to find 302 * a new network (typically after 1 minute) - 303 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 304 * a replacement network. 305 */ 306 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 307 308 /** 309 * Used internally to indicate the system is ready. 310 */ 311 private static final int EVENT_SYSTEM_READY = 25; 312 313 /** 314 * used to add a network request with a pending intent 315 * includes a NetworkRequestInfo 316 */ 317 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 318 319 /** 320 * used to remove a pending intent and its associated network request. 321 * arg1 = UID of caller 322 * obj = PendingIntent 323 */ 324 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 325 326 327 /** Handler used for internal events. */ 328 final private InternalHandler mHandler; 329 /** Handler used for incoming {@link NetworkStateTracker} events. */ 330 final private NetworkStateTrackerHandler mTrackerHandler; 331 332 private boolean mSystemReady; 333 private Intent mInitialBroadcast; 334 335 private PowerManager.WakeLock mNetTransitionWakeLock; 336 private String mNetTransitionWakeLockCausedBy = ""; 337 private int mNetTransitionWakeLockSerialNumber; 338 private int mNetTransitionWakeLockTimeout; 339 private final PowerManager.WakeLock mPendingIntentWakeLock; 340 341 private InetAddress mDefaultDns; 342 343 // used in DBG mode to track inet condition reports 344 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 345 private ArrayList mInetLog; 346 347 // track the current default http proxy - tell the world if we get a new one (real change) 348 private volatile ProxyInfo mDefaultProxy = null; 349 private Object mProxyLock = new Object(); 350 private boolean mDefaultProxyDisabled = false; 351 352 // track the global proxy. 353 private ProxyInfo mGlobalProxy = null; 354 355 private PacManager mPacManager = null; 356 357 private SettingsObserver mSettingsObserver; 358 359 private UserManager mUserManager; 360 361 NetworkConfig[] mNetConfigs; 362 int mNetworksDefined; 363 364 // the set of network types that can only be enabled by system/sig apps 365 List mProtectedNetworks; 366 367 private DataConnectionStats mDataConnectionStats; 368 369 TelephonyManager mTelephonyManager; 370 371 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 372 private final static int MIN_NET_ID = 100; // some reserved marks 373 private final static int MAX_NET_ID = 65535; 374 private int mNextNetId = MIN_NET_ID; 375 376 // sequence number of NetworkRequests 377 private int mNextNetworkRequestId = 1; 378 379 /** 380 * Implements support for the legacy "one network per network type" model. 381 * 382 * We used to have a static array of NetworkStateTrackers, one for each 383 * network type, but that doesn't work any more now that we can have, 384 * for example, more that one wifi network. This class stores all the 385 * NetworkAgentInfo objects that support a given type, but the legacy 386 * API will only see the first one. 387 * 388 * It serves two main purposes: 389 * 390 * 1. Provide information about "the network for a given type" (since this 391 * API only supports one). 392 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 393 * the first network for a given type changes, or if the default network 394 * changes. 395 */ 396 private class LegacyTypeTracker { 397 398 private static final boolean DBG = true; 399 private static final boolean VDBG = false; 400 private static final String TAG = "CSLegacyTypeTracker"; 401 402 /** 403 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 404 * Each list holds references to all NetworkAgentInfos that are used to 405 * satisfy requests for that network type. 406 * 407 * This array is built out at startup such that an unsupported network 408 * doesn't get an ArrayList instance, making this a tristate: 409 * unsupported, supported but not active and active. 410 * 411 * The actual lists are populated when we scan the network types that 412 * are supported on this device. 413 */ 414 private ArrayList<NetworkAgentInfo> mTypeLists[]; 415 416 public LegacyTypeTracker() { 417 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 418 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 419 } 420 421 public void addSupportedType(int type) { 422 if (mTypeLists[type] != null) { 423 throw new IllegalStateException( 424 "legacy list for type " + type + "already initialized"); 425 } 426 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 427 } 428 429 public boolean isTypeSupported(int type) { 430 return isNetworkTypeValid(type) && mTypeLists[type] != null; 431 } 432 433 public NetworkAgentInfo getNetworkForType(int type) { 434 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 435 return mTypeLists[type].get(0); 436 } else { 437 return null; 438 } 439 } 440 441 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 442 if (DBG) { 443 log("Sending " + (connected ? "connected" : "disconnected") + 444 " broadcast for type " + type + " " + nai.name() + 445 " isDefaultNetwork=" + isDefaultNetwork(nai)); 446 } 447 } 448 449 /** Adds the given network to the specified legacy type list. */ 450 public void add(int type, NetworkAgentInfo nai) { 451 if (!isTypeSupported(type)) { 452 return; // Invalid network type. 453 } 454 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 455 456 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 457 if (list.contains(nai)) { 458 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 459 return; 460 } 461 462 list.add(nai); 463 464 // Send a broadcast if this is the first network of its type or if it's the default. 465 if (list.size() == 1 || isDefaultNetwork(nai)) { 466 maybeLogBroadcast(nai, true, type); 467 sendLegacyNetworkBroadcast(nai, true, type); 468 } 469 } 470 471 /** Removes the given network from the specified legacy type list. */ 472 public void remove(int type, NetworkAgentInfo nai) { 473 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 474 if (list == null || list.isEmpty()) { 475 return; 476 } 477 478 boolean wasFirstNetwork = list.get(0).equals(nai); 479 480 if (!list.remove(nai)) { 481 return; 482 } 483 484 if (wasFirstNetwork || isDefaultNetwork(nai)) { 485 maybeLogBroadcast(nai, false, type); 486 sendLegacyNetworkBroadcast(nai, false, type); 487 } 488 489 if (!list.isEmpty() && wasFirstNetwork) { 490 if (DBG) log("Other network available for type " + type + 491 ", sending connected broadcast"); 492 maybeLogBroadcast(list.get(0), false, type); 493 sendLegacyNetworkBroadcast(list.get(0), false, type); 494 } 495 } 496 497 /** Removes the given network from all legacy type lists. */ 498 public void remove(NetworkAgentInfo nai) { 499 if (VDBG) log("Removing agent " + nai); 500 for (int type = 0; type < mTypeLists.length; type++) { 501 remove(type, nai); 502 } 503 } 504 505 private String naiToString(NetworkAgentInfo nai) { 506 String name = (nai != null) ? nai.name() : "null"; 507 String state = (nai.networkInfo != null) ? 508 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 509 "???/???"; 510 return name + " " + state; 511 } 512 513 public void dump(IndentingPrintWriter pw) { 514 for (int type = 0; type < mTypeLists.length; type++) { 515 if (mTypeLists[type] == null) continue; 516 pw.print(type + " "); 517 pw.increaseIndent(); 518 if (mTypeLists[type].size() == 0) pw.println("none"); 519 for (NetworkAgentInfo nai : mTypeLists[type]) { 520 pw.println(naiToString(nai)); 521 } 522 pw.decreaseIndent(); 523 } 524 } 525 526 // This class needs its own log method because it has a different TAG. 527 private void log(String s) { 528 Slog.d(TAG, s); 529 } 530 531 } 532 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 533 534 public ConnectivityService(Context context, INetworkManagementService netManager, 535 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 536 if (DBG) log("ConnectivityService starting up"); 537 538 NetworkCapabilities netCap = new NetworkCapabilities(); 539 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 540 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 541 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 542 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 543 NetworkRequestInfo.REQUEST); 544 mNetworkRequests.put(mDefaultRequest, nri); 545 546 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 547 handlerThread.start(); 548 mHandler = new InternalHandler(handlerThread.getLooper()); 549 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 550 551 // setup our unique device name 552 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 553 String id = Settings.Secure.getString(context.getContentResolver(), 554 Settings.Secure.ANDROID_ID); 555 if (id != null && id.length() > 0) { 556 String name = new String("android-").concat(id); 557 SystemProperties.set("net.hostname", name); 558 } 559 } 560 561 // read our default dns server ip 562 String dns = Settings.Global.getString(context.getContentResolver(), 563 Settings.Global.DEFAULT_DNS_SERVER); 564 if (dns == null || dns.length() == 0) { 565 dns = context.getResources().getString( 566 com.android.internal.R.string.config_default_dns_server); 567 } 568 try { 569 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 570 } catch (IllegalArgumentException e) { 571 loge("Error setting defaultDns using " + dns); 572 } 573 574 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 575 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 576 577 mContext = checkNotNull(context, "missing Context"); 578 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 579 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 580 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 581 mKeyStore = KeyStore.getInstance(); 582 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 583 584 try { 585 mPolicyManager.registerListener(mPolicyListener); 586 } catch (RemoteException e) { 587 // ouch, no rules updates means some processes may never get network 588 loge("unable to register INetworkPolicyListener" + e.toString()); 589 } 590 591 final PowerManager powerManager = (PowerManager) context.getSystemService( 592 Context.POWER_SERVICE); 593 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 594 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 595 com.android.internal.R.integer.config_networkTransitionTimeout); 596 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 597 598 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 599 600 // TODO: What is the "correct" way to do determine if this is a wifi only device? 601 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 602 log("wifiOnly=" + wifiOnly); 603 String[] naStrings = context.getResources().getStringArray( 604 com.android.internal.R.array.networkAttributes); 605 for (String naString : naStrings) { 606 try { 607 NetworkConfig n = new NetworkConfig(naString); 608 if (VDBG) log("naString=" + naString + " config=" + n); 609 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 610 loge("Error in networkAttributes - ignoring attempt to define type " + 611 n.type); 612 continue; 613 } 614 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 615 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 616 n.type); 617 continue; 618 } 619 if (mNetConfigs[n.type] != null) { 620 loge("Error in networkAttributes - ignoring attempt to redefine type " + 621 n.type); 622 continue; 623 } 624 mLegacyTypeTracker.addSupportedType(n.type); 625 626 mNetConfigs[n.type] = n; 627 mNetworksDefined++; 628 } catch(Exception e) { 629 // ignore it - leave the entry null 630 } 631 } 632 633 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 634 if (mNetConfigs[TYPE_VPN] == null) { 635 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 636 // don't need to add TYPE_VPN to mNetConfigs. 637 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 638 mNetworksDefined++; // used only in the log() statement below. 639 } 640 641 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 642 643 mProtectedNetworks = new ArrayList<Integer>(); 644 int[] protectedNetworks = context.getResources().getIntArray( 645 com.android.internal.R.array.config_protectedNetworks); 646 for (int p : protectedNetworks) { 647 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 648 mProtectedNetworks.add(p); 649 } else { 650 if (DBG) loge("Ignoring protectedNetwork " + p); 651 } 652 } 653 654 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 655 && SystemProperties.get("ro.build.type").equals("eng"); 656 657 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 658 659 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 660 661 //set up the listener for user state for creating user VPNs 662 IntentFilter intentFilter = new IntentFilter(); 663 intentFilter.addAction(Intent.ACTION_USER_STARTING); 664 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 665 mContext.registerReceiverAsUser( 666 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 667 668 try { 669 mNetd.registerObserver(mTethering); 670 mNetd.registerObserver(mDataActivityObserver); 671 } catch (RemoteException e) { 672 loge("Error registering observer :" + e); 673 } 674 675 if (DBG) { 676 mInetLog = new ArrayList(); 677 } 678 679 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 680 mSettingsObserver.observe(mContext); 681 682 mDataConnectionStats = new DataConnectionStats(mContext); 683 mDataConnectionStats.startMonitoring(); 684 685 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 686 687 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 688 } 689 690 private synchronized int nextNetworkRequestId() { 691 return mNextNetworkRequestId++; 692 } 693 694 private void assignNextNetId(NetworkAgentInfo nai) { 695 synchronized (mNetworkForNetId) { 696 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 697 int netId = mNextNetId; 698 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 699 // Make sure NetID unused. http://b/16815182 700 if (mNetworkForNetId.get(netId) == null) { 701 nai.network = new Network(netId); 702 mNetworkForNetId.put(netId, nai); 703 return; 704 } 705 } 706 } 707 throw new IllegalStateException("No free netIds"); 708 } 709 710 private NetworkState getFilteredNetworkState(int networkType, int uid) { 711 NetworkInfo info = null; 712 LinkProperties lp = null; 713 NetworkCapabilities nc = null; 714 Network network = null; 715 String subscriberId = null; 716 717 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 718 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 719 if (nai != null) { 720 synchronized (nai) { 721 info = new NetworkInfo(nai.networkInfo); 722 lp = new LinkProperties(nai.linkProperties); 723 nc = new NetworkCapabilities(nai.networkCapabilities); 724 // Network objects are outwardly immutable so there is no point to duplicating. 725 // Duplicating also precludes sharing socket factories and connection pools. 726 network = nai.network; 727 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 728 } 729 info.setType(networkType); 730 } else { 731 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 732 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 733 info.setIsAvailable(true); 734 lp = new LinkProperties(); 735 nc = new NetworkCapabilities(); 736 network = null; 737 } 738 info = getFilteredNetworkInfo(info, lp, uid); 739 } 740 741 return new NetworkState(info, lp, nc, network, subscriberId, null); 742 } 743 744 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 745 if (network == null) { 746 return null; 747 } 748 synchronized (mNetworkForNetId) { 749 return mNetworkForNetId.get(network.netId); 750 } 751 }; 752 753 private Network[] getVpnUnderlyingNetworks(int uid) { 754 if (!mLockdownEnabled) { 755 int user = UserHandle.getUserId(uid); 756 synchronized (mVpns) { 757 Vpn vpn = mVpns.get(user); 758 if (vpn != null && vpn.appliesToUid(uid)) { 759 return vpn.getUnderlyingNetworks(); 760 } 761 } 762 } 763 return null; 764 } 765 766 private NetworkState getUnfilteredActiveNetworkState(int uid) { 767 NetworkInfo info = null; 768 LinkProperties lp = null; 769 NetworkCapabilities nc = null; 770 Network network = null; 771 String subscriberId = null; 772 773 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 774 775 final Network[] networks = getVpnUnderlyingNetworks(uid); 776 if (networks != null) { 777 // getUnderlyingNetworks() returns: 778 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 779 // empty array => the VPN explicitly said "no default network". 780 // non-empty array => the VPN specified one or more default networks; we use the 781 // first one. 782 if (networks.length > 0) { 783 nai = getNetworkAgentInfoForNetwork(networks[0]); 784 } else { 785 nai = null; 786 } 787 } 788 789 if (nai != null) { 790 synchronized (nai) { 791 info = new NetworkInfo(nai.networkInfo); 792 lp = new LinkProperties(nai.linkProperties); 793 nc = new NetworkCapabilities(nai.networkCapabilities); 794 // Network objects are outwardly immutable so there is no point to duplicating. 795 // Duplicating also precludes sharing socket factories and connection pools. 796 network = nai.network; 797 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 798 } 799 } 800 801 return new NetworkState(info, lp, nc, network, subscriberId, null); 802 } 803 804 /** 805 * Check if UID should be blocked from using the network with the given LinkProperties. 806 */ 807 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 808 final boolean networkCostly; 809 final int uidRules; 810 811 final String iface = (lp == null ? "" : lp.getInterfaceName()); 812 synchronized (mRulesLock) { 813 networkCostly = mMeteredIfaces.contains(iface); 814 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 815 } 816 817 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 818 return true; 819 } 820 821 // no restrictive rules; network is visible 822 return false; 823 } 824 825 /** 826 * Return a filtered {@link NetworkInfo}, potentially marked 827 * {@link DetailedState#BLOCKED} based on 828 * {@link #isNetworkWithLinkPropertiesBlocked}. 829 */ 830 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 831 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 832 // network is blocked; clone and override state 833 info = new NetworkInfo(info); 834 info.setDetailedState(DetailedState.BLOCKED, null, null); 835 if (DBG) { 836 log("returning Blocked NetworkInfo for ifname=" + 837 lp.getInterfaceName() + ", uid=" + uid); 838 } 839 } 840 if (info != null && mLockdownTracker != null) { 841 info = mLockdownTracker.augmentNetworkInfo(info); 842 if (DBG) log("returning Locked NetworkInfo"); 843 } 844 return info; 845 } 846 847 /** 848 * Return NetworkInfo for the active (i.e., connected) network interface. 849 * It is assumed that at most one network is active at a time. If more 850 * than one is active, it is indeterminate which will be returned. 851 * @return the info for the active network, or {@code null} if none is 852 * active 853 */ 854 @Override 855 public NetworkInfo getActiveNetworkInfo() { 856 enforceAccessPermission(); 857 final int uid = Binder.getCallingUid(); 858 NetworkState state = getUnfilteredActiveNetworkState(uid); 859 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 860 } 861 862 /** 863 * Find the first Provisioning network. 864 * 865 * @return NetworkInfo or null if none. 866 */ 867 private NetworkInfo getProvisioningNetworkInfo() { 868 enforceAccessPermission(); 869 870 // Find the first Provisioning Network 871 NetworkInfo provNi = null; 872 for (NetworkInfo ni : getAllNetworkInfo()) { 873 if (ni.isConnectedToProvisioningNetwork()) { 874 provNi = ni; 875 break; 876 } 877 } 878 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 879 return provNi; 880 } 881 882 /** 883 * Find the first Provisioning network or the ActiveDefaultNetwork 884 * if there is no Provisioning network 885 * 886 * @return NetworkInfo or null if none. 887 */ 888 @Override 889 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 890 enforceAccessPermission(); 891 892 NetworkInfo provNi = getProvisioningNetworkInfo(); 893 if (provNi == null) { 894 provNi = getActiveNetworkInfo(); 895 } 896 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 897 return provNi; 898 } 899 900 public NetworkInfo getActiveNetworkInfoUnfiltered() { 901 enforceAccessPermission(); 902 final int uid = Binder.getCallingUid(); 903 NetworkState state = getUnfilteredActiveNetworkState(uid); 904 return state.networkInfo; 905 } 906 907 @Override 908 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 909 enforceConnectivityInternalPermission(); 910 NetworkState state = getUnfilteredActiveNetworkState(uid); 911 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 912 } 913 914 @Override 915 public NetworkInfo getNetworkInfo(int networkType) { 916 enforceAccessPermission(); 917 final int uid = Binder.getCallingUid(); 918 if (getVpnUnderlyingNetworks(uid) != null) { 919 // A VPN is active, so we may need to return one of its underlying networks. This 920 // information is not available in LegacyTypeTracker, so we have to get it from 921 // getUnfilteredActiveNetworkState. 922 NetworkState state = getUnfilteredActiveNetworkState(uid); 923 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 924 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 925 } 926 } 927 NetworkState state = getFilteredNetworkState(networkType, uid); 928 return state.networkInfo; 929 } 930 931 @Override 932 public NetworkInfo getNetworkInfoForNetwork(Network network) { 933 enforceAccessPermission(); 934 final int uid = Binder.getCallingUid(); 935 NetworkInfo info = null; 936 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 937 if (nai != null) { 938 synchronized (nai) { 939 info = new NetworkInfo(nai.networkInfo); 940 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 941 } 942 } 943 return info; 944 } 945 946 @Override 947 public NetworkInfo[] getAllNetworkInfo() { 948 enforceAccessPermission(); 949 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 950 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 951 networkType++) { 952 NetworkInfo info = getNetworkInfo(networkType); 953 if (info != null) { 954 result.add(info); 955 } 956 } 957 return result.toArray(new NetworkInfo[result.size()]); 958 } 959 960 @Override 961 public Network getNetworkForType(int networkType) { 962 enforceAccessPermission(); 963 final int uid = Binder.getCallingUid(); 964 NetworkState state = getFilteredNetworkState(networkType, uid); 965 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 966 return state.network; 967 } 968 return null; 969 } 970 971 @Override 972 public Network[] getAllNetworks() { 973 enforceAccessPermission(); 974 synchronized (mNetworkForNetId) { 975 final Network[] result = new Network[mNetworkForNetId.size()]; 976 for (int i = 0; i < mNetworkForNetId.size(); i++) { 977 result[i] = mNetworkForNetId.valueAt(i).network; 978 } 979 return result; 980 } 981 } 982 983 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 984 if (nai != null) { 985 synchronized (nai) { 986 if (nai.created) { 987 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 988 if (nai.lastValidated) { 989 nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 990 } else { 991 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 992 } 993 return nc; 994 } 995 } 996 } 997 return null; 998 } 999 1000 @Override 1001 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1002 // The basic principle is: if an app's traffic could possibly go over a 1003 // network, without the app doing anything multinetwork-specific, 1004 // (hence, by "default"), then include that network's capabilities in 1005 // the array. 1006 // 1007 // In the normal case, app traffic only goes over the system's default 1008 // network connection, so that's the only network returned. 1009 // 1010 // With a VPN in force, some app traffic may go into the VPN, and thus 1011 // over whatever underlying networks the VPN specifies, while other app 1012 // traffic may go over the system default network (e.g.: a split-tunnel 1013 // VPN, or an app disallowed by the VPN), so the set of networks 1014 // returned includes the VPN's underlying networks and the system 1015 // default. 1016 enforceAccessPermission(); 1017 1018 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1019 1020 NetworkAgentInfo nai = getDefaultNetwork(); 1021 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1022 if (nc != null) { 1023 result.put(nai.network, nc); 1024 } 1025 1026 if (!mLockdownEnabled) { 1027 synchronized (mVpns) { 1028 Vpn vpn = mVpns.get(userId); 1029 if (vpn != null) { 1030 Network[] networks = vpn.getUnderlyingNetworks(); 1031 if (networks != null) { 1032 for (Network network : networks) { 1033 nai = getNetworkAgentInfoForNetwork(network); 1034 nc = getNetworkCapabilitiesAndValidation(nai); 1035 if (nc != null) { 1036 result.put(nai.network, nc); 1037 } 1038 } 1039 } 1040 } 1041 } 1042 } 1043 1044 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1045 out = result.values().toArray(out); 1046 return out; 1047 } 1048 1049 @Override 1050 public boolean isNetworkSupported(int networkType) { 1051 enforceAccessPermission(); 1052 return mLegacyTypeTracker.isTypeSupported(networkType); 1053 } 1054 1055 /** 1056 * Return LinkProperties for the active (i.e., connected) default 1057 * network interface. It is assumed that at most one default network 1058 * is active at a time. If more than one is active, it is indeterminate 1059 * which will be returned. 1060 * @return the ip properties for the active network, or {@code null} if 1061 * none is active 1062 */ 1063 @Override 1064 public LinkProperties getActiveLinkProperties() { 1065 enforceAccessPermission(); 1066 final int uid = Binder.getCallingUid(); 1067 NetworkState state = getUnfilteredActiveNetworkState(uid); 1068 return state.linkProperties; 1069 } 1070 1071 @Override 1072 public LinkProperties getLinkPropertiesForType(int networkType) { 1073 enforceAccessPermission(); 1074 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1075 if (nai != null) { 1076 synchronized (nai) { 1077 return new LinkProperties(nai.linkProperties); 1078 } 1079 } 1080 return null; 1081 } 1082 1083 // TODO - this should be ALL networks 1084 @Override 1085 public LinkProperties getLinkProperties(Network network) { 1086 enforceAccessPermission(); 1087 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1088 if (nai != null) { 1089 synchronized (nai) { 1090 return new LinkProperties(nai.linkProperties); 1091 } 1092 } 1093 return null; 1094 } 1095 1096 @Override 1097 public NetworkCapabilities getNetworkCapabilities(Network network) { 1098 enforceAccessPermission(); 1099 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1100 if (nai != null) { 1101 synchronized (nai) { 1102 return new NetworkCapabilities(nai.networkCapabilities); 1103 } 1104 } 1105 return null; 1106 } 1107 1108 @Override 1109 public NetworkState[] getAllNetworkState() { 1110 // Require internal since we're handing out IMSI details 1111 enforceConnectivityInternalPermission(); 1112 1113 final ArrayList<NetworkState> result = Lists.newArrayList(); 1114 for (Network network : getAllNetworks()) { 1115 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1116 if (nai != null) { 1117 synchronized (nai) { 1118 final String subscriberId = (nai.networkMisc != null) 1119 ? nai.networkMisc.subscriberId : null; 1120 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1121 nai.networkCapabilities, network, subscriberId, null)); 1122 } 1123 } 1124 } 1125 return result.toArray(new NetworkState[result.size()]); 1126 } 1127 1128 @Override 1129 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1130 enforceAccessPermission(); 1131 final int uid = Binder.getCallingUid(); 1132 final long token = Binder.clearCallingIdentity(); 1133 try { 1134 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1135 if (state.networkInfo != null) { 1136 try { 1137 return mPolicyManager.getNetworkQuotaInfo(state); 1138 } catch (RemoteException e) { 1139 } 1140 } 1141 return null; 1142 } finally { 1143 Binder.restoreCallingIdentity(token); 1144 } 1145 } 1146 1147 @Override 1148 public boolean isActiveNetworkMetered() { 1149 enforceAccessPermission(); 1150 final int uid = Binder.getCallingUid(); 1151 final long token = Binder.clearCallingIdentity(); 1152 try { 1153 return isActiveNetworkMeteredUnchecked(uid); 1154 } finally { 1155 Binder.restoreCallingIdentity(token); 1156 } 1157 } 1158 1159 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1160 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1161 if (state.networkInfo != null) { 1162 try { 1163 return mPolicyManager.isNetworkMetered(state); 1164 } catch (RemoteException e) { 1165 } 1166 } 1167 return false; 1168 } 1169 1170 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1171 @Override 1172 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1173 int deviceType = Integer.parseInt(label); 1174 sendDataActivityBroadcast(deviceType, active, tsNanos); 1175 } 1176 }; 1177 1178 /** 1179 * Ensure that a network route exists to deliver traffic to the specified 1180 * host via the specified network interface. 1181 * @param networkType the type of the network over which traffic to the 1182 * specified host is to be routed 1183 * @param hostAddress the IP address of the host to which the route is 1184 * desired 1185 * @return {@code true} on success, {@code false} on failure 1186 */ 1187 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1188 enforceChangePermission(); 1189 if (mProtectedNetworks.contains(networkType)) { 1190 enforceConnectivityInternalPermission(); 1191 } 1192 1193 InetAddress addr; 1194 try { 1195 addr = InetAddress.getByAddress(hostAddress); 1196 } catch (UnknownHostException e) { 1197 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1198 return false; 1199 } 1200 1201 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1202 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1203 return false; 1204 } 1205 1206 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1207 if (nai == null) { 1208 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1209 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1210 } else { 1211 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1212 } 1213 return false; 1214 } 1215 1216 DetailedState netState; 1217 synchronized (nai) { 1218 netState = nai.networkInfo.getDetailedState(); 1219 } 1220 1221 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1222 if (VDBG) { 1223 log("requestRouteToHostAddress on down network " 1224 + "(" + networkType + ") - dropped" 1225 + " netState=" + netState); 1226 } 1227 return false; 1228 } 1229 1230 final int uid = Binder.getCallingUid(); 1231 final long token = Binder.clearCallingIdentity(); 1232 try { 1233 LinkProperties lp; 1234 int netId; 1235 synchronized (nai) { 1236 lp = nai.linkProperties; 1237 netId = nai.network.netId; 1238 } 1239 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1240 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1241 return ok; 1242 } finally { 1243 Binder.restoreCallingIdentity(token); 1244 } 1245 } 1246 1247 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1248 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1249 if (bestRoute == null) { 1250 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1251 } else { 1252 String iface = bestRoute.getInterface(); 1253 if (bestRoute.getGateway().equals(addr)) { 1254 // if there is no better route, add the implied hostroute for our gateway 1255 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1256 } else { 1257 // if we will connect to this through another route, add a direct route 1258 // to it's gateway 1259 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1260 } 1261 } 1262 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1263 try { 1264 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1265 } catch (Exception e) { 1266 // never crash - catch them all 1267 if (DBG) loge("Exception trying to add a route: " + e); 1268 return false; 1269 } 1270 return true; 1271 } 1272 1273 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1274 @Override 1275 public void onUidRulesChanged(int uid, int uidRules) { 1276 // caller is NPMS, since we only register with them 1277 if (LOGD_RULES) { 1278 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1279 } 1280 1281 synchronized (mRulesLock) { 1282 // skip update when we've already applied rules 1283 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1284 if (oldRules == uidRules) return; 1285 1286 mUidRules.put(uid, uidRules); 1287 } 1288 1289 // TODO: notify UID when it has requested targeted updates 1290 } 1291 1292 @Override 1293 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1294 // caller is NPMS, since we only register with them 1295 if (LOGD_RULES) { 1296 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1297 } 1298 1299 synchronized (mRulesLock) { 1300 mMeteredIfaces.clear(); 1301 for (String iface : meteredIfaces) { 1302 mMeteredIfaces.add(iface); 1303 } 1304 } 1305 } 1306 1307 @Override 1308 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1309 // caller is NPMS, since we only register with them 1310 if (LOGD_RULES) { 1311 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1312 } 1313 } 1314 }; 1315 1316 private void enforceInternetPermission() { 1317 mContext.enforceCallingOrSelfPermission( 1318 android.Manifest.permission.INTERNET, 1319 "ConnectivityService"); 1320 } 1321 1322 private void enforceAccessPermission() { 1323 mContext.enforceCallingOrSelfPermission( 1324 android.Manifest.permission.ACCESS_NETWORK_STATE, 1325 "ConnectivityService"); 1326 } 1327 1328 private void enforceChangePermission() { 1329 mContext.enforceCallingOrSelfPermission( 1330 android.Manifest.permission.CHANGE_NETWORK_STATE, 1331 "ConnectivityService"); 1332 } 1333 1334 private void enforceTetherAccessPermission() { 1335 mContext.enforceCallingOrSelfPermission( 1336 android.Manifest.permission.ACCESS_NETWORK_STATE, 1337 "ConnectivityService"); 1338 } 1339 1340 private void enforceConnectivityInternalPermission() { 1341 mContext.enforceCallingOrSelfPermission( 1342 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1343 "ConnectivityService"); 1344 } 1345 1346 public void sendConnectedBroadcast(NetworkInfo info) { 1347 enforceConnectivityInternalPermission(); 1348 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1349 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1350 } 1351 1352 private void sendInetConditionBroadcast(NetworkInfo info) { 1353 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1354 } 1355 1356 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1357 if (mLockdownTracker != null) { 1358 info = mLockdownTracker.augmentNetworkInfo(info); 1359 } 1360 1361 Intent intent = new Intent(bcastType); 1362 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1363 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1364 if (info.isFailover()) { 1365 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1366 info.setFailover(false); 1367 } 1368 if (info.getReason() != null) { 1369 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1370 } 1371 if (info.getExtraInfo() != null) { 1372 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1373 info.getExtraInfo()); 1374 } 1375 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1376 return intent; 1377 } 1378 1379 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1380 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1381 } 1382 1383 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1384 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1385 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1386 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1387 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1388 final long ident = Binder.clearCallingIdentity(); 1389 try { 1390 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1391 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1392 } finally { 1393 Binder.restoreCallingIdentity(ident); 1394 } 1395 } 1396 1397 private void sendStickyBroadcast(Intent intent) { 1398 synchronized(this) { 1399 if (!mSystemReady) { 1400 mInitialBroadcast = new Intent(intent); 1401 } 1402 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1403 if (DBG) { 1404 log("sendStickyBroadcast: action=" + intent.getAction()); 1405 } 1406 1407 final long ident = Binder.clearCallingIdentity(); 1408 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1409 final IBatteryStats bs = BatteryStatsService.getService(); 1410 try { 1411 NetworkInfo ni = intent.getParcelableExtra( 1412 ConnectivityManager.EXTRA_NETWORK_INFO); 1413 bs.noteConnectivityChanged(intent.getIntExtra( 1414 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1415 ni != null ? ni.getState().toString() : "?"); 1416 } catch (RemoteException e) { 1417 } 1418 } 1419 try { 1420 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1421 } finally { 1422 Binder.restoreCallingIdentity(ident); 1423 } 1424 } 1425 } 1426 1427 void systemReady() { 1428 loadGlobalProxy(); 1429 1430 synchronized(this) { 1431 mSystemReady = true; 1432 if (mInitialBroadcast != null) { 1433 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1434 mInitialBroadcast = null; 1435 } 1436 } 1437 // load the global proxy at startup 1438 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1439 1440 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1441 // for user to unlock device. 1442 if (!updateLockdownVpn()) { 1443 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1444 mContext.registerReceiver(mUserPresentReceiver, filter); 1445 } 1446 1447 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1448 1449 mPermissionMonitor.startMonitoring(); 1450 } 1451 1452 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1453 @Override 1454 public void onReceive(Context context, Intent intent) { 1455 // Try creating lockdown tracker, since user present usually means 1456 // unlocked keystore. 1457 if (updateLockdownVpn()) { 1458 mContext.unregisterReceiver(this); 1459 } 1460 } 1461 }; 1462 1463 /** @hide */ 1464 @Override 1465 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1466 enforceConnectivityInternalPermission(); 1467 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1468// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1469 } 1470 1471 /** 1472 * Setup data activity tracking for the given network. 1473 * 1474 * Every {@code setupDataActivityTracking} should be paired with a 1475 * {@link #removeDataActivityTracking} for cleanup. 1476 */ 1477 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1478 final String iface = networkAgent.linkProperties.getInterfaceName(); 1479 1480 final int timeout; 1481 int type = ConnectivityManager.TYPE_NONE; 1482 1483 if (networkAgent.networkCapabilities.hasTransport( 1484 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1485 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1486 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1487 5); 1488 type = ConnectivityManager.TYPE_MOBILE; 1489 } else if (networkAgent.networkCapabilities.hasTransport( 1490 NetworkCapabilities.TRANSPORT_WIFI)) { 1491 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1492 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1493 0); 1494 type = ConnectivityManager.TYPE_WIFI; 1495 } else { 1496 // do not track any other networks 1497 timeout = 0; 1498 } 1499 1500 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1501 try { 1502 mNetd.addIdleTimer(iface, timeout, type); 1503 } catch (Exception e) { 1504 // You shall not crash! 1505 loge("Exception in setupDataActivityTracking " + e); 1506 } 1507 } 1508 } 1509 1510 /** 1511 * Remove data activity tracking when network disconnects. 1512 */ 1513 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1514 final String iface = networkAgent.linkProperties.getInterfaceName(); 1515 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1516 1517 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1518 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1519 try { 1520 // the call fails silently if no idletimer setup for this interface 1521 mNetd.removeIdleTimer(iface); 1522 } catch (Exception e) { 1523 loge("Exception in removeDataActivityTracking " + e); 1524 } 1525 } 1526 } 1527 1528 /** 1529 * Reads the network specific MTU size from reources. 1530 * and set it on it's iface. 1531 */ 1532 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1533 final String iface = newLp.getInterfaceName(); 1534 final int mtu = newLp.getMtu(); 1535 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1536 if (VDBG) log("identical MTU - not setting"); 1537 return; 1538 } 1539 1540 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1541 loge("Unexpected mtu value: " + mtu + ", " + iface); 1542 return; 1543 } 1544 1545 // Cannot set MTU without interface name 1546 if (TextUtils.isEmpty(iface)) { 1547 loge("Setting MTU size with null iface."); 1548 return; 1549 } 1550 1551 try { 1552 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1553 mNetd.setMtu(iface, mtu); 1554 } catch (Exception e) { 1555 Slog.e(TAG, "exception in setMtu()" + e); 1556 } 1557 } 1558 1559 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1560 1561 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1562 if (isDefaultNetwork(nai) == false) { 1563 return; 1564 } 1565 1566 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1567 String[] values = null; 1568 if (tcpBufferSizes != null) { 1569 values = tcpBufferSizes.split(","); 1570 } 1571 1572 if (values == null || values.length != 6) { 1573 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1574 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1575 values = tcpBufferSizes.split(","); 1576 } 1577 1578 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1579 1580 try { 1581 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1582 1583 final String prefix = "/sys/kernel/ipv4/tcp_"; 1584 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1585 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1586 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1587 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1588 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1589 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1590 mCurrentTcpBufferSizes = tcpBufferSizes; 1591 } catch (IOException e) { 1592 loge("Can't set TCP buffer sizes:" + e); 1593 } 1594 1595 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1596 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1597 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1598 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1599 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1600 if (rwndValue != 0) { 1601 SystemProperties.set(sysctlKey, rwndValue.toString()); 1602 } 1603 } 1604 1605 private void flushVmDnsCache() { 1606 /* 1607 * Tell the VMs to toss their DNS caches 1608 */ 1609 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1610 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1611 /* 1612 * Connectivity events can happen before boot has completed ... 1613 */ 1614 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1615 final long ident = Binder.clearCallingIdentity(); 1616 try { 1617 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1618 } finally { 1619 Binder.restoreCallingIdentity(ident); 1620 } 1621 } 1622 1623 @Override 1624 public int getRestoreDefaultNetworkDelay(int networkType) { 1625 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1626 NETWORK_RESTORE_DELAY_PROP_NAME); 1627 if(restoreDefaultNetworkDelayStr != null && 1628 restoreDefaultNetworkDelayStr.length() != 0) { 1629 try { 1630 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1631 } catch (NumberFormatException e) { 1632 } 1633 } 1634 // if the system property isn't set, use the value for the apn type 1635 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1636 1637 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1638 (mNetConfigs[networkType] != null)) { 1639 ret = mNetConfigs[networkType].restoreTime; 1640 } 1641 return ret; 1642 } 1643 1644 @Override 1645 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1646 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1647 if (mContext.checkCallingOrSelfPermission( 1648 android.Manifest.permission.DUMP) 1649 != PackageManager.PERMISSION_GRANTED) { 1650 pw.println("Permission Denial: can't dump ConnectivityService " + 1651 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1652 Binder.getCallingUid()); 1653 return; 1654 } 1655 1656 pw.println("NetworkFactories for:"); 1657 pw.increaseIndent(); 1658 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1659 pw.println(nfi.name); 1660 } 1661 pw.decreaseIndent(); 1662 pw.println(); 1663 1664 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1665 pw.print("Active default network: "); 1666 if (defaultNai == null) { 1667 pw.println("none"); 1668 } else { 1669 pw.println(defaultNai.network.netId); 1670 } 1671 pw.println(); 1672 1673 pw.println("Current Networks:"); 1674 pw.increaseIndent(); 1675 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1676 pw.println(nai.toString()); 1677 pw.increaseIndent(); 1678 pw.println("Requests:"); 1679 pw.increaseIndent(); 1680 for (int i = 0; i < nai.networkRequests.size(); i++) { 1681 pw.println(nai.networkRequests.valueAt(i).toString()); 1682 } 1683 pw.decreaseIndent(); 1684 pw.println("Lingered:"); 1685 pw.increaseIndent(); 1686 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1687 pw.decreaseIndent(); 1688 pw.decreaseIndent(); 1689 } 1690 pw.decreaseIndent(); 1691 pw.println(); 1692 1693 pw.println("Network Requests:"); 1694 pw.increaseIndent(); 1695 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1696 pw.println(nri.toString()); 1697 } 1698 pw.println(); 1699 pw.decreaseIndent(); 1700 1701 pw.println("mLegacyTypeTracker:"); 1702 pw.increaseIndent(); 1703 mLegacyTypeTracker.dump(pw); 1704 pw.decreaseIndent(); 1705 pw.println(); 1706 1707 synchronized (this) { 1708 pw.println("NetworkTransitionWakeLock is currently " + 1709 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1710 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1711 } 1712 pw.println(); 1713 1714 mTethering.dump(fd, pw, args); 1715 1716 if (mInetLog != null) { 1717 pw.println(); 1718 pw.println("Inet condition reports:"); 1719 pw.increaseIndent(); 1720 for(int i = 0; i < mInetLog.size(); i++) { 1721 pw.println(mInetLog.get(i)); 1722 } 1723 pw.decreaseIndent(); 1724 } 1725 } 1726 1727 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1728 if (nai.network == null) return false; 1729 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1730 if (officialNai != null && officialNai.equals(nai)) return true; 1731 if (officialNai != null || VDBG) { 1732 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1733 " - " + nai); 1734 } 1735 return false; 1736 } 1737 1738 private boolean isRequest(NetworkRequest request) { 1739 return mNetworkRequests.get(request).isRequest; 1740 } 1741 1742 // must be stateless - things change under us. 1743 private class NetworkStateTrackerHandler extends Handler { 1744 public NetworkStateTrackerHandler(Looper looper) { 1745 super(looper); 1746 } 1747 1748 @Override 1749 public void handleMessage(Message msg) { 1750 NetworkInfo info; 1751 switch (msg.what) { 1752 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1753 handleAsyncChannelHalfConnect(msg); 1754 break; 1755 } 1756 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1757 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1758 if (nai != null) nai.asyncChannel.disconnect(); 1759 break; 1760 } 1761 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1762 handleAsyncChannelDisconnected(msg); 1763 break; 1764 } 1765 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1766 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1767 if (nai == null) { 1768 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1769 } else { 1770 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1771 } 1772 break; 1773 } 1774 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1775 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1776 if (nai == null) { 1777 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1778 } else { 1779 if (VDBG) { 1780 log("Update of LinkProperties for " + nai.name() + 1781 "; created=" + nai.created); 1782 } 1783 LinkProperties oldLp = nai.linkProperties; 1784 synchronized (nai) { 1785 nai.linkProperties = (LinkProperties)msg.obj; 1786 } 1787 if (nai.created) updateLinkProperties(nai, oldLp); 1788 } 1789 break; 1790 } 1791 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1792 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1793 if (nai == null) { 1794 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1795 break; 1796 } 1797 info = (NetworkInfo) msg.obj; 1798 updateNetworkInfo(nai, info); 1799 break; 1800 } 1801 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1802 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1803 if (nai == null) { 1804 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1805 break; 1806 } 1807 Integer score = (Integer) msg.obj; 1808 if (score != null) updateNetworkScore(nai, score.intValue()); 1809 break; 1810 } 1811 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1812 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1813 if (nai == null) { 1814 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1815 break; 1816 } 1817 try { 1818 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1819 } catch (Exception e) { 1820 // Never crash! 1821 loge("Exception in addVpnUidRanges: " + e); 1822 } 1823 break; 1824 } 1825 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1826 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1827 if (nai == null) { 1828 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1829 break; 1830 } 1831 try { 1832 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1833 } catch (Exception e) { 1834 // Never crash! 1835 loge("Exception in removeVpnUidRanges: " + e); 1836 } 1837 break; 1838 } 1839 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1840 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1841 if (nai == null) { 1842 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1843 break; 1844 } 1845 if (nai.created && !nai.networkMisc.explicitlySelected) { 1846 loge("ERROR: created network explicitly selected."); 1847 } 1848 nai.networkMisc.explicitlySelected = true; 1849 break; 1850 } 1851 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1852 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1853 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1854 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1855 nai.lastValidated = valid; 1856 if (valid) { 1857 if (DBG) log("Validated " + nai.name()); 1858 if (!nai.everValidated) { 1859 nai.everValidated = true; 1860 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1861 ReapUnvalidatedNetworks.REAP); 1862 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1863 sendUpdatedScoreToFactories(nai); 1864 } 1865 } 1866 updateInetCondition(nai); 1867 // Let the NetworkAgent know the state of its network 1868 nai.asyncChannel.sendMessage( 1869 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1870 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1871 0, null); 1872 } 1873 break; 1874 } 1875 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1876 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1877 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1878 handleLingerComplete(nai); 1879 } 1880 break; 1881 } 1882 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1883 if (msg.arg1 == 0) { 1884 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1885 } else { 1886 NetworkAgentInfo nai = null; 1887 synchronized (mNetworkForNetId) { 1888 nai = mNetworkForNetId.get(msg.arg2); 1889 } 1890 if (nai == null) { 1891 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1892 break; 1893 } 1894 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1895 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1896 } 1897 break; 1898 } 1899 } 1900 } 1901 } 1902 1903 // Cancel any lingering so the linger timeout doesn't teardown a network. 1904 // This should be called when a network begins satisfying a NetworkRequest. 1905 // Note: depending on what state the NetworkMonitor is in (e.g., 1906 // if it's awaiting captive portal login, or if validation failed), this 1907 // may trigger a re-evaluation of the network. 1908 private void unlinger(NetworkAgentInfo nai) { 1909 if (VDBG) log("Canceling linger of " + nai.name()); 1910 // If network has never been validated, it cannot have been lingered, so don't bother 1911 // needlessly triggering a re-evaluation. 1912 if (!nai.everValidated) return; 1913 nai.networkLingered.clear(); 1914 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 1915 } 1916 1917 private void handleAsyncChannelHalfConnect(Message msg) { 1918 AsyncChannel ac = (AsyncChannel) msg.obj; 1919 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 1920 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 1921 if (VDBG) log("NetworkFactory connected"); 1922 // A network factory has connected. Send it all current NetworkRequests. 1923 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1924 if (nri.isRequest == false) continue; 1925 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 1926 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 1927 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 1928 } 1929 } else { 1930 loge("Error connecting NetworkFactory"); 1931 mNetworkFactoryInfos.remove(msg.obj); 1932 } 1933 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 1934 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 1935 if (VDBG) log("NetworkAgent connected"); 1936 // A network agent has requested a connection. Establish the connection. 1937 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 1938 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 1939 } else { 1940 loge("Error connecting NetworkAgent"); 1941 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 1942 if (nai != null) { 1943 synchronized (mNetworkForNetId) { 1944 mNetworkForNetId.remove(nai.network.netId); 1945 } 1946 // Just in case. 1947 mLegacyTypeTracker.remove(nai); 1948 } 1949 } 1950 } 1951 } 1952 1953 private void handleAsyncChannelDisconnected(Message msg) { 1954 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1955 if (nai != null) { 1956 if (DBG) { 1957 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 1958 } 1959 // A network agent has disconnected. 1960 if (nai.created) { 1961 // Tell netd to clean up the configuration for this network 1962 // (routing rules, DNS, etc). 1963 try { 1964 mNetd.removeNetwork(nai.network.netId); 1965 } catch (Exception e) { 1966 loge("Exception removing network: " + e); 1967 } 1968 } 1969 // TODO - if we move the logic to the network agent (have them disconnect 1970 // because they lost all their requests or because their score isn't good) 1971 // then they would disconnect organically, report their new state and then 1972 // disconnect the channel. 1973 if (nai.networkInfo.isConnected()) { 1974 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 1975 null, null); 1976 } 1977 if (isDefaultNetwork(nai)) { 1978 mDefaultInetConditionPublished = 0; 1979 } 1980 notifyIfacesChanged(); 1981 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 1982 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 1983 mNetworkAgentInfos.remove(msg.replyTo); 1984 updateClat(null, nai.linkProperties, nai); 1985 mLegacyTypeTracker.remove(nai); 1986 synchronized (mNetworkForNetId) { 1987 mNetworkForNetId.remove(nai.network.netId); 1988 } 1989 // Since we've lost the network, go through all the requests that 1990 // it was satisfying and see if any other factory can satisfy them. 1991 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 1992 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 1993 for (int i = 0; i < nai.networkRequests.size(); i++) { 1994 NetworkRequest request = nai.networkRequests.valueAt(i); 1995 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 1996 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 1997 if (DBG) { 1998 log("Checking for replacement network to handle request " + request ); 1999 } 2000 mNetworkForRequestId.remove(request.requestId); 2001 sendUpdatedScoreToFactories(request, 0); 2002 NetworkAgentInfo alternative = null; 2003 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2004 if (existing.satisfies(request) && 2005 (alternative == null || 2006 alternative.getCurrentScore() < existing.getCurrentScore())) { 2007 alternative = existing; 2008 } 2009 } 2010 if (alternative != null) { 2011 if (DBG) log(" found replacement in " + alternative.name()); 2012 if (!toActivate.contains(alternative)) { 2013 toActivate.add(alternative); 2014 } 2015 } 2016 } 2017 } 2018 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2019 removeDataActivityTracking(nai); 2020 notifyLockdownVpn(nai); 2021 requestNetworkTransitionWakelock(nai.name()); 2022 } 2023 for (NetworkAgentInfo networkToActivate : toActivate) { 2024 unlinger(networkToActivate); 2025 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2026 ReapUnvalidatedNetworks.DONT_REAP); 2027 } 2028 } 2029 } 2030 2031 // If this method proves to be too slow then we can maintain a separate 2032 // pendingIntent => NetworkRequestInfo map. 2033 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2034 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2035 Intent intent = pendingIntent.getIntent(); 2036 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2037 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2038 if (existingPendingIntent != null && 2039 existingPendingIntent.getIntent().filterEquals(intent)) { 2040 return entry.getValue(); 2041 } 2042 } 2043 return null; 2044 } 2045 2046 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2047 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2048 2049 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2050 if (existingRequest != null) { // remove the existing request. 2051 if (DBG) log("Replacing " + existingRequest.request + " with " 2052 + nri.request + " because their intents matched."); 2053 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2054 } 2055 handleRegisterNetworkRequest(msg); 2056 } 2057 2058 private void handleRegisterNetworkRequest(Message msg) { 2059 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2060 2061 mNetworkRequests.put(nri.request, nri); 2062 2063 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2064 2065 // Check for the best currently alive network that satisfies this request 2066 NetworkAgentInfo bestNetwork = null; 2067 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2068 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2069 if (network.satisfies(nri.request)) { 2070 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2071 if (!nri.isRequest) { 2072 // Not setting bestNetwork here as a listening NetworkRequest may be 2073 // satisfied by multiple Networks. Instead the request is added to 2074 // each satisfying Network and notified about each. 2075 network.addRequest(nri.request); 2076 notifyNetworkCallback(network, nri); 2077 } else if (bestNetwork == null || 2078 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2079 bestNetwork = network; 2080 } 2081 } 2082 } 2083 if (bestNetwork != null) { 2084 if (DBG) log("using " + bestNetwork.name()); 2085 unlinger(bestNetwork); 2086 bestNetwork.addRequest(nri.request); 2087 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2088 notifyNetworkCallback(bestNetwork, nri); 2089 if (nri.request.legacyType != TYPE_NONE) { 2090 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2091 } 2092 } 2093 2094 if (nri.isRequest) { 2095 if (DBG) log("sending new NetworkRequest to factories"); 2096 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2097 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2098 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2099 0, nri.request); 2100 } 2101 } 2102 } 2103 2104 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2105 int callingUid) { 2106 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2107 if (nri != null) { 2108 handleReleaseNetworkRequest(nri.request, callingUid); 2109 } 2110 } 2111 2112 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2113 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2114 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2115 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2116 private boolean unneeded(NetworkAgentInfo nai) { 2117 if (!nai.created || nai.isVPN()) return false; 2118 boolean unneeded = true; 2119 if (nai.everValidated) { 2120 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2121 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2122 try { 2123 if (isRequest(nr)) unneeded = false; 2124 } catch (Exception e) { 2125 loge("Request " + nr + " not found in mNetworkRequests."); 2126 loge(" it came from request list of " + nai.name()); 2127 } 2128 } 2129 } else { 2130 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2131 // If this Network is already the highest scoring Network for a request, or if 2132 // there is hope for it to become one if it validated, then it is needed. 2133 if (nri.isRequest && nai.satisfies(nri.request) && 2134 (nai.networkRequests.get(nri.request.requestId) != null || 2135 // Note that this catches two important cases: 2136 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2137 // is currently satisfying the request. This is desirable when 2138 // cellular ends up validating but WiFi does not. 2139 // 2. Unvalidated WiFi will not be reaped when validated cellular 2140 // is currently satsifying the request. This is desirable when 2141 // WiFi ends up validating and out scoring cellular. 2142 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2143 nai.getCurrentScoreAsValidated())) { 2144 unneeded = false; 2145 break; 2146 } 2147 } 2148 } 2149 return unneeded; 2150 } 2151 2152 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2153 NetworkRequestInfo nri = mNetworkRequests.get(request); 2154 if (nri != null) { 2155 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2156 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2157 return; 2158 } 2159 if (DBG) log("releasing NetworkRequest " + request); 2160 nri.unlinkDeathRecipient(); 2161 mNetworkRequests.remove(request); 2162 if (nri.isRequest) { 2163 // Find all networks that are satisfying this request and remove the request 2164 // from their request lists. 2165 // TODO - it's my understanding that for a request there is only a single 2166 // network satisfying it, so this loop is wasteful 2167 boolean wasKept = false; 2168 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2169 if (nai.networkRequests.get(nri.request.requestId) != null) { 2170 nai.networkRequests.remove(nri.request.requestId); 2171 if (DBG) { 2172 log(" Removing from current network " + nai.name() + 2173 ", leaving " + nai.networkRequests.size() + 2174 " requests."); 2175 } 2176 if (unneeded(nai)) { 2177 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2178 teardownUnneededNetwork(nai); 2179 } else { 2180 // suspect there should only be one pass through here 2181 // but if any were kept do the check below 2182 wasKept |= true; 2183 } 2184 } 2185 } 2186 2187 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2188 if (nai != null) { 2189 mNetworkForRequestId.remove(nri.request.requestId); 2190 } 2191 // Maintain the illusion. When this request arrived, we might have pretended 2192 // that a network connected to serve it, even though the network was already 2193 // connected. Now that this request has gone away, we might have to pretend 2194 // that the network disconnected. LegacyTypeTracker will generate that 2195 // phantom disconnect for this type. 2196 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2197 boolean doRemove = true; 2198 if (wasKept) { 2199 // check if any of the remaining requests for this network are for the 2200 // same legacy type - if so, don't remove the nai 2201 for (int i = 0; i < nai.networkRequests.size(); i++) { 2202 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2203 if (otherRequest.legacyType == nri.request.legacyType && 2204 isRequest(otherRequest)) { 2205 if (DBG) log(" still have other legacy request - leaving"); 2206 doRemove = false; 2207 } 2208 } 2209 } 2210 2211 if (doRemove) { 2212 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2213 } 2214 } 2215 2216 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2217 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2218 nri.request); 2219 } 2220 } else { 2221 // listens don't have a singular affectedNetwork. Check all networks to see 2222 // if this listen request applies and remove it. 2223 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2224 nai.networkRequests.remove(nri.request.requestId); 2225 } 2226 } 2227 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2228 } 2229 } 2230 2231 private class InternalHandler extends Handler { 2232 public InternalHandler(Looper looper) { 2233 super(looper); 2234 } 2235 2236 @Override 2237 public void handleMessage(Message msg) { 2238 switch (msg.what) { 2239 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2240 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2241 String causedBy = null; 2242 synchronized (ConnectivityService.this) { 2243 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2244 mNetTransitionWakeLock.isHeld()) { 2245 mNetTransitionWakeLock.release(); 2246 causedBy = mNetTransitionWakeLockCausedBy; 2247 } else { 2248 break; 2249 } 2250 } 2251 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2252 log("Failed to find a new network - expiring NetTransition Wakelock"); 2253 } else { 2254 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2255 " cleared because we found a replacement network"); 2256 } 2257 break; 2258 } 2259 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2260 handleDeprecatedGlobalHttpProxy(); 2261 break; 2262 } 2263 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2264 Intent intent = (Intent)msg.obj; 2265 sendStickyBroadcast(intent); 2266 break; 2267 } 2268 case EVENT_PROXY_HAS_CHANGED: { 2269 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2270 break; 2271 } 2272 case EVENT_REGISTER_NETWORK_FACTORY: { 2273 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2274 break; 2275 } 2276 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2277 handleUnregisterNetworkFactory((Messenger)msg.obj); 2278 break; 2279 } 2280 case EVENT_REGISTER_NETWORK_AGENT: { 2281 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2282 break; 2283 } 2284 case EVENT_REGISTER_NETWORK_REQUEST: 2285 case EVENT_REGISTER_NETWORK_LISTENER: { 2286 handleRegisterNetworkRequest(msg); 2287 break; 2288 } 2289 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2290 handleRegisterNetworkRequestWithIntent(msg); 2291 break; 2292 } 2293 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2294 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2295 break; 2296 } 2297 case EVENT_RELEASE_NETWORK_REQUEST: { 2298 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2299 break; 2300 } 2301 case EVENT_SYSTEM_READY: { 2302 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2303 nai.networkMonitor.systemReady = true; 2304 } 2305 break; 2306 } 2307 } 2308 } 2309 } 2310 2311 // javadoc from interface 2312 public int tether(String iface) { 2313 ConnectivityManager.enforceTetherChangePermission(mContext); 2314 if (isTetheringSupported()) { 2315 return mTethering.tether(iface); 2316 } else { 2317 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2318 } 2319 } 2320 2321 // javadoc from interface 2322 public int untether(String iface) { 2323 ConnectivityManager.enforceTetherChangePermission(mContext); 2324 2325 if (isTetheringSupported()) { 2326 return mTethering.untether(iface); 2327 } else { 2328 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2329 } 2330 } 2331 2332 // javadoc from interface 2333 public int getLastTetherError(String iface) { 2334 enforceTetherAccessPermission(); 2335 2336 if (isTetheringSupported()) { 2337 return mTethering.getLastTetherError(iface); 2338 } else { 2339 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2340 } 2341 } 2342 2343 // TODO - proper iface API for selection by property, inspection, etc 2344 public String[] getTetherableUsbRegexs() { 2345 enforceTetherAccessPermission(); 2346 if (isTetheringSupported()) { 2347 return mTethering.getTetherableUsbRegexs(); 2348 } else { 2349 return new String[0]; 2350 } 2351 } 2352 2353 public String[] getTetherableWifiRegexs() { 2354 enforceTetherAccessPermission(); 2355 if (isTetheringSupported()) { 2356 return mTethering.getTetherableWifiRegexs(); 2357 } else { 2358 return new String[0]; 2359 } 2360 } 2361 2362 public String[] getTetherableBluetoothRegexs() { 2363 enforceTetherAccessPermission(); 2364 if (isTetheringSupported()) { 2365 return mTethering.getTetherableBluetoothRegexs(); 2366 } else { 2367 return new String[0]; 2368 } 2369 } 2370 2371 public int setUsbTethering(boolean enable) { 2372 ConnectivityManager.enforceTetherChangePermission(mContext); 2373 if (isTetheringSupported()) { 2374 return mTethering.setUsbTethering(enable); 2375 } else { 2376 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2377 } 2378 } 2379 2380 // TODO - move iface listing, queries, etc to new module 2381 // javadoc from interface 2382 public String[] getTetherableIfaces() { 2383 enforceTetherAccessPermission(); 2384 return mTethering.getTetherableIfaces(); 2385 } 2386 2387 public String[] getTetheredIfaces() { 2388 enforceTetherAccessPermission(); 2389 return mTethering.getTetheredIfaces(); 2390 } 2391 2392 public String[] getTetheringErroredIfaces() { 2393 enforceTetherAccessPermission(); 2394 return mTethering.getErroredIfaces(); 2395 } 2396 2397 public String[] getTetheredDhcpRanges() { 2398 enforceConnectivityInternalPermission(); 2399 return mTethering.getTetheredDhcpRanges(); 2400 } 2401 2402 // if ro.tether.denied = true we default to no tethering 2403 // gservices could set the secure setting to 1 though to enable it on a build where it 2404 // had previously been turned off. 2405 public boolean isTetheringSupported() { 2406 enforceTetherAccessPermission(); 2407 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2408 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2409 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2410 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2411 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2412 mTethering.getTetherableWifiRegexs().length != 0 || 2413 mTethering.getTetherableBluetoothRegexs().length != 0) && 2414 mTethering.getUpstreamIfaceTypes().length != 0); 2415 } 2416 2417 // Called when we lose the default network and have no replacement yet. 2418 // This will automatically be cleared after X seconds or a new default network 2419 // becomes CONNECTED, whichever happens first. The timer is started by the 2420 // first caller and not restarted by subsequent callers. 2421 private void requestNetworkTransitionWakelock(String forWhom) { 2422 int serialNum = 0; 2423 synchronized (this) { 2424 if (mNetTransitionWakeLock.isHeld()) return; 2425 serialNum = ++mNetTransitionWakeLockSerialNumber; 2426 mNetTransitionWakeLock.acquire(); 2427 mNetTransitionWakeLockCausedBy = forWhom; 2428 } 2429 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2430 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2431 mNetTransitionWakeLockTimeout); 2432 return; 2433 } 2434 2435 // 100 percent is full good, 0 is full bad. 2436 public void reportInetCondition(int networkType, int percentage) { 2437 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2438 if (nai == null) return; 2439 boolean isGood = percentage > 50; 2440 // Revalidate if the app report does not match our current validated state. 2441 if (isGood != nai.lastValidated) { 2442 // Make the message logged by reportBadNetwork below less confusing. 2443 if (DBG && isGood) log("reportInetCondition: type=" + networkType + " ok, revalidate"); 2444 reportBadNetwork(nai.network); 2445 } 2446 } 2447 2448 public void reportBadNetwork(Network network) { 2449 enforceAccessPermission(); 2450 enforceInternetPermission(); 2451 2452 if (network == null) return; 2453 2454 final int uid = Binder.getCallingUid(); 2455 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2456 if (nai == null) return; 2457 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2458 synchronized (nai) { 2459 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2460 // which isn't meant to work on uncreated networks. 2461 if (!nai.created) return; 2462 2463 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2464 2465 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2466 } 2467 } 2468 2469 public ProxyInfo getDefaultProxy() { 2470 // this information is already available as a world read/writable jvm property 2471 // so this API change wouldn't have a benifit. It also breaks the passing 2472 // of proxy info to all the JVMs. 2473 // enforceAccessPermission(); 2474 synchronized (mProxyLock) { 2475 ProxyInfo ret = mGlobalProxy; 2476 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2477 return ret; 2478 } 2479 } 2480 2481 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2482 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2483 // proxy is null then there is no proxy in place). 2484 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2485 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2486 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2487 proxy = null; 2488 } 2489 return proxy; 2490 } 2491 2492 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2493 // better for determining if a new proxy broadcast is necessary: 2494 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2495 // avoid unnecessary broadcasts. 2496 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2497 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2498 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2499 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2500 // all set. 2501 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2502 a = canonicalizeProxyInfo(a); 2503 b = canonicalizeProxyInfo(b); 2504 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2505 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2506 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2507 } 2508 2509 public void setGlobalProxy(ProxyInfo proxyProperties) { 2510 enforceConnectivityInternalPermission(); 2511 2512 synchronized (mProxyLock) { 2513 if (proxyProperties == mGlobalProxy) return; 2514 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2515 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2516 2517 String host = ""; 2518 int port = 0; 2519 String exclList = ""; 2520 String pacFileUrl = ""; 2521 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2522 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2523 if (!proxyProperties.isValid()) { 2524 if (DBG) 2525 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2526 return; 2527 } 2528 mGlobalProxy = new ProxyInfo(proxyProperties); 2529 host = mGlobalProxy.getHost(); 2530 port = mGlobalProxy.getPort(); 2531 exclList = mGlobalProxy.getExclusionListAsString(); 2532 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2533 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2534 } 2535 } else { 2536 mGlobalProxy = null; 2537 } 2538 ContentResolver res = mContext.getContentResolver(); 2539 final long token = Binder.clearCallingIdentity(); 2540 try { 2541 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2542 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2543 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2544 exclList); 2545 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2546 } finally { 2547 Binder.restoreCallingIdentity(token); 2548 } 2549 2550 if (mGlobalProxy == null) { 2551 proxyProperties = mDefaultProxy; 2552 } 2553 sendProxyBroadcast(proxyProperties); 2554 } 2555 } 2556 2557 private void loadGlobalProxy() { 2558 ContentResolver res = mContext.getContentResolver(); 2559 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2560 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2561 String exclList = Settings.Global.getString(res, 2562 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2563 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2564 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2565 ProxyInfo proxyProperties; 2566 if (!TextUtils.isEmpty(pacFileUrl)) { 2567 proxyProperties = new ProxyInfo(pacFileUrl); 2568 } else { 2569 proxyProperties = new ProxyInfo(host, port, exclList); 2570 } 2571 if (!proxyProperties.isValid()) { 2572 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2573 return; 2574 } 2575 2576 synchronized (mProxyLock) { 2577 mGlobalProxy = proxyProperties; 2578 } 2579 } 2580 } 2581 2582 public ProxyInfo getGlobalProxy() { 2583 // this information is already available as a world read/writable jvm property 2584 // so this API change wouldn't have a benifit. It also breaks the passing 2585 // of proxy info to all the JVMs. 2586 // enforceAccessPermission(); 2587 synchronized (mProxyLock) { 2588 return mGlobalProxy; 2589 } 2590 } 2591 2592 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2593 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2594 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2595 proxy = null; 2596 } 2597 synchronized (mProxyLock) { 2598 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2599 if (mDefaultProxy == proxy) return; // catches repeated nulls 2600 if (proxy != null && !proxy.isValid()) { 2601 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2602 return; 2603 } 2604 2605 // This call could be coming from the PacManager, containing the port of the local 2606 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2607 // global (to get the correct local port), and send a broadcast. 2608 // TODO: Switch PacManager to have its own message to send back rather than 2609 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2610 if ((mGlobalProxy != null) && (proxy != null) 2611 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2612 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2613 mGlobalProxy = proxy; 2614 sendProxyBroadcast(mGlobalProxy); 2615 return; 2616 } 2617 mDefaultProxy = proxy; 2618 2619 if (mGlobalProxy != null) return; 2620 if (!mDefaultProxyDisabled) { 2621 sendProxyBroadcast(proxy); 2622 } 2623 } 2624 } 2625 2626 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2627 // This method gets called when any network changes proxy, but the broadcast only ever contains 2628 // the default proxy (even if it hasn't changed). 2629 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2630 // world where an app might be bound to a non-default network. 2631 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2632 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2633 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2634 2635 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2636 sendProxyBroadcast(getDefaultProxy()); 2637 } 2638 } 2639 2640 private void handleDeprecatedGlobalHttpProxy() { 2641 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2642 Settings.Global.HTTP_PROXY); 2643 if (!TextUtils.isEmpty(proxy)) { 2644 String data[] = proxy.split(":"); 2645 if (data.length == 0) { 2646 return; 2647 } 2648 2649 String proxyHost = data[0]; 2650 int proxyPort = 8080; 2651 if (data.length > 1) { 2652 try { 2653 proxyPort = Integer.parseInt(data[1]); 2654 } catch (NumberFormatException e) { 2655 return; 2656 } 2657 } 2658 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2659 setGlobalProxy(p); 2660 } 2661 } 2662 2663 private void sendProxyBroadcast(ProxyInfo proxy) { 2664 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2665 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2666 if (DBG) log("sending Proxy Broadcast for " + proxy); 2667 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2668 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2669 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2670 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2671 final long ident = Binder.clearCallingIdentity(); 2672 try { 2673 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2674 } finally { 2675 Binder.restoreCallingIdentity(ident); 2676 } 2677 } 2678 2679 private static class SettingsObserver extends ContentObserver { 2680 private int mWhat; 2681 private Handler mHandler; 2682 SettingsObserver(Handler handler, int what) { 2683 super(handler); 2684 mHandler = handler; 2685 mWhat = what; 2686 } 2687 2688 void observe(Context context) { 2689 ContentResolver resolver = context.getContentResolver(); 2690 resolver.registerContentObserver(Settings.Global.getUriFor( 2691 Settings.Global.HTTP_PROXY), false, this); 2692 } 2693 2694 @Override 2695 public void onChange(boolean selfChange) { 2696 mHandler.obtainMessage(mWhat).sendToTarget(); 2697 } 2698 } 2699 2700 private static void log(String s) { 2701 Slog.d(TAG, s); 2702 } 2703 2704 private static void loge(String s) { 2705 Slog.e(TAG, s); 2706 } 2707 2708 private static <T> T checkNotNull(T value, String message) { 2709 if (value == null) { 2710 throw new NullPointerException(message); 2711 } 2712 return value; 2713 } 2714 2715 /** 2716 * Prepare for a VPN application. 2717 * Permissions are checked in Vpn class. 2718 * @hide 2719 */ 2720 @Override 2721 public boolean prepareVpn(String oldPackage, String newPackage) { 2722 throwIfLockdownEnabled(); 2723 int user = UserHandle.getUserId(Binder.getCallingUid()); 2724 synchronized(mVpns) { 2725 return mVpns.get(user).prepare(oldPackage, newPackage); 2726 } 2727 } 2728 2729 /** 2730 * Set whether the current VPN package has the ability to launch VPNs without 2731 * user intervention. This method is used by system-privileged apps. 2732 * Permissions are checked in Vpn class. 2733 * @hide 2734 */ 2735 @Override 2736 public void setVpnPackageAuthorization(boolean authorized) { 2737 int user = UserHandle.getUserId(Binder.getCallingUid()); 2738 synchronized(mVpns) { 2739 mVpns.get(user).setPackageAuthorization(authorized); 2740 } 2741 } 2742 2743 /** 2744 * Configure a TUN interface and return its file descriptor. Parameters 2745 * are encoded and opaque to this class. This method is used by VpnBuilder 2746 * and not available in ConnectivityManager. Permissions are checked in 2747 * Vpn class. 2748 * @hide 2749 */ 2750 @Override 2751 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2752 throwIfLockdownEnabled(); 2753 int user = UserHandle.getUserId(Binder.getCallingUid()); 2754 synchronized(mVpns) { 2755 return mVpns.get(user).establish(config); 2756 } 2757 } 2758 2759 /** 2760 * Start legacy VPN, controlling native daemons as needed. Creates a 2761 * secondary thread to perform connection work, returning quickly. 2762 */ 2763 @Override 2764 public void startLegacyVpn(VpnProfile profile) { 2765 throwIfLockdownEnabled(); 2766 final LinkProperties egress = getActiveLinkProperties(); 2767 if (egress == null) { 2768 throw new IllegalStateException("Missing active network connection"); 2769 } 2770 int user = UserHandle.getUserId(Binder.getCallingUid()); 2771 synchronized(mVpns) { 2772 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2773 } 2774 } 2775 2776 /** 2777 * Return the information of the ongoing legacy VPN. This method is used 2778 * by VpnSettings and not available in ConnectivityManager. Permissions 2779 * are checked in Vpn class. 2780 * @hide 2781 */ 2782 @Override 2783 public LegacyVpnInfo getLegacyVpnInfo() { 2784 throwIfLockdownEnabled(); 2785 int user = UserHandle.getUserId(Binder.getCallingUid()); 2786 synchronized(mVpns) { 2787 return mVpns.get(user).getLegacyVpnInfo(); 2788 } 2789 } 2790 2791 /** 2792 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2793 * not available in ConnectivityManager. 2794 * Permissions are checked in Vpn class. 2795 * @hide 2796 */ 2797 @Override 2798 public VpnConfig getVpnConfig() { 2799 int user = UserHandle.getUserId(Binder.getCallingUid()); 2800 synchronized(mVpns) { 2801 return mVpns.get(user).getVpnConfig(); 2802 } 2803 } 2804 2805 @Override 2806 public boolean updateLockdownVpn() { 2807 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2808 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2809 return false; 2810 } 2811 2812 // Tear down existing lockdown if profile was removed 2813 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2814 if (mLockdownEnabled) { 2815 if (!mKeyStore.isUnlocked()) { 2816 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2817 return false; 2818 } 2819 2820 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2821 final VpnProfile profile = VpnProfile.decode( 2822 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2823 int user = UserHandle.getUserId(Binder.getCallingUid()); 2824 synchronized(mVpns) { 2825 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2826 profile)); 2827 } 2828 } else { 2829 setLockdownTracker(null); 2830 } 2831 2832 return true; 2833 } 2834 2835 /** 2836 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2837 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2838 */ 2839 private void setLockdownTracker(LockdownVpnTracker tracker) { 2840 // Shutdown any existing tracker 2841 final LockdownVpnTracker existing = mLockdownTracker; 2842 mLockdownTracker = null; 2843 if (existing != null) { 2844 existing.shutdown(); 2845 } 2846 2847 try { 2848 if (tracker != null) { 2849 mNetd.setFirewallEnabled(true); 2850 mNetd.setFirewallInterfaceRule("lo", true); 2851 mLockdownTracker = tracker; 2852 mLockdownTracker.init(); 2853 } else { 2854 mNetd.setFirewallEnabled(false); 2855 } 2856 } catch (RemoteException e) { 2857 // ignored; NMS lives inside system_server 2858 } 2859 } 2860 2861 private void throwIfLockdownEnabled() { 2862 if (mLockdownEnabled) { 2863 throw new IllegalStateException("Unavailable in lockdown mode"); 2864 } 2865 } 2866 2867 @Override 2868 public int checkMobileProvisioning(int suggestedTimeOutMs) { 2869 // TODO: Remove? Any reason to trigger a provisioning check? 2870 return -1; 2871 } 2872 2873 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 2874 private volatile boolean mIsNotificationVisible = false; 2875 2876 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 2877 if (DBG) { 2878 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 2879 + " action=" + action); 2880 } 2881 Intent intent = new Intent(action); 2882 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 2883 // Concatenate the range of types onto the range of NetIDs. 2884 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 2885 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 2886 } 2887 2888 /** 2889 * Show or hide network provisioning notificaitons. 2890 * 2891 * @param id an identifier that uniquely identifies this notification. This must match 2892 * between show and hide calls. We use the NetID value but for legacy callers 2893 * we concatenate the range of types with the range of NetIDs. 2894 */ 2895 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 2896 String extraInfo, PendingIntent intent) { 2897 if (DBG) { 2898 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 2899 networkType + " extraInfo=" + extraInfo); 2900 } 2901 2902 Resources r = Resources.getSystem(); 2903 NotificationManager notificationManager = (NotificationManager) mContext 2904 .getSystemService(Context.NOTIFICATION_SERVICE); 2905 2906 if (visible) { 2907 CharSequence title; 2908 CharSequence details; 2909 int icon; 2910 Notification notification = new Notification(); 2911 switch (networkType) { 2912 case ConnectivityManager.TYPE_WIFI: 2913 title = r.getString(R.string.wifi_available_sign_in, 0); 2914 details = r.getString(R.string.network_available_sign_in_detailed, 2915 extraInfo); 2916 icon = R.drawable.stat_notify_wifi_in_range; 2917 break; 2918 case ConnectivityManager.TYPE_MOBILE: 2919 case ConnectivityManager.TYPE_MOBILE_HIPRI: 2920 title = r.getString(R.string.network_available_sign_in, 0); 2921 // TODO: Change this to pull from NetworkInfo once a printable 2922 // name has been added to it 2923 details = mTelephonyManager.getNetworkOperatorName(); 2924 icon = R.drawable.stat_notify_rssi_in_range; 2925 break; 2926 default: 2927 title = r.getString(R.string.network_available_sign_in, 0); 2928 details = r.getString(R.string.network_available_sign_in_detailed, 2929 extraInfo); 2930 icon = R.drawable.stat_notify_rssi_in_range; 2931 break; 2932 } 2933 2934 notification.when = 0; 2935 notification.icon = icon; 2936 notification.flags = Notification.FLAG_AUTO_CANCEL; 2937 notification.tickerText = title; 2938 notification.color = mContext.getResources().getColor( 2939 com.android.internal.R.color.system_notification_accent_color); 2940 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 2941 notification.contentIntent = intent; 2942 2943 try { 2944 notificationManager.notify(NOTIFICATION_ID, id, notification); 2945 } catch (NullPointerException npe) { 2946 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 2947 npe.printStackTrace(); 2948 } 2949 } else { 2950 try { 2951 notificationManager.cancel(NOTIFICATION_ID, id); 2952 } catch (NullPointerException npe) { 2953 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 2954 npe.printStackTrace(); 2955 } 2956 } 2957 mIsNotificationVisible = visible; 2958 } 2959 2960 /** Location to an updatable file listing carrier provisioning urls. 2961 * An example: 2962 * 2963 * <?xml version="1.0" encoding="utf-8"?> 2964 * <provisioningUrls> 2965 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 2966 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 2967 * </provisioningUrls> 2968 */ 2969 private static final String PROVISIONING_URL_PATH = 2970 "/data/misc/radio/provisioning_urls.xml"; 2971 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 2972 2973 /** XML tag for root element. */ 2974 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 2975 /** XML tag for individual url */ 2976 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 2977 /** XML tag for redirected url */ 2978 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 2979 /** XML attribute for mcc */ 2980 private static final String ATTR_MCC = "mcc"; 2981 /** XML attribute for mnc */ 2982 private static final String ATTR_MNC = "mnc"; 2983 2984 private static final int REDIRECTED_PROVISIONING = 1; 2985 private static final int PROVISIONING = 2; 2986 2987 private String getProvisioningUrlBaseFromFile(int type) { 2988 FileReader fileReader = null; 2989 XmlPullParser parser = null; 2990 Configuration config = mContext.getResources().getConfiguration(); 2991 String tagType; 2992 2993 switch (type) { 2994 case PROVISIONING: 2995 tagType = TAG_PROVISIONING_URL; 2996 break; 2997 case REDIRECTED_PROVISIONING: 2998 tagType = TAG_REDIRECTED_URL; 2999 break; 3000 default: 3001 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3002 type); 3003 } 3004 3005 try { 3006 fileReader = new FileReader(mProvisioningUrlFile); 3007 parser = Xml.newPullParser(); 3008 parser.setInput(fileReader); 3009 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3010 3011 while (true) { 3012 XmlUtils.nextElement(parser); 3013 3014 String element = parser.getName(); 3015 if (element == null) break; 3016 3017 if (element.equals(tagType)) { 3018 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3019 try { 3020 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3021 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3022 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3023 parser.next(); 3024 if (parser.getEventType() == XmlPullParser.TEXT) { 3025 return parser.getText(); 3026 } 3027 } 3028 } 3029 } catch (NumberFormatException e) { 3030 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3031 } 3032 } 3033 } 3034 return null; 3035 } catch (FileNotFoundException e) { 3036 loge("Carrier Provisioning Urls file not found"); 3037 } catch (XmlPullParserException e) { 3038 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3039 } catch (IOException e) { 3040 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3041 } finally { 3042 if (fileReader != null) { 3043 try { 3044 fileReader.close(); 3045 } catch (IOException e) {} 3046 } 3047 } 3048 return null; 3049 } 3050 3051 @Override 3052 public String getMobileRedirectedProvisioningUrl() { 3053 enforceConnectivityInternalPermission(); 3054 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3055 if (TextUtils.isEmpty(url)) { 3056 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3057 } 3058 return url; 3059 } 3060 3061 @Override 3062 public String getMobileProvisioningUrl() { 3063 enforceConnectivityInternalPermission(); 3064 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3065 if (TextUtils.isEmpty(url)) { 3066 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3067 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3068 } else { 3069 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3070 } 3071 // populate the iccid, imei and phone number in the provisioning url. 3072 if (!TextUtils.isEmpty(url)) { 3073 String phoneNumber = mTelephonyManager.getLine1Number(); 3074 if (TextUtils.isEmpty(phoneNumber)) { 3075 phoneNumber = "0000000000"; 3076 } 3077 url = String.format(url, 3078 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3079 mTelephonyManager.getDeviceId() /* IMEI */, 3080 phoneNumber /* Phone numer */); 3081 } 3082 3083 return url; 3084 } 3085 3086 @Override 3087 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3088 String action) { 3089 enforceConnectivityInternalPermission(); 3090 final long ident = Binder.clearCallingIdentity(); 3091 try { 3092 setProvNotificationVisible(visible, networkType, action); 3093 } finally { 3094 Binder.restoreCallingIdentity(ident); 3095 } 3096 } 3097 3098 @Override 3099 public void setAirplaneMode(boolean enable) { 3100 enforceConnectivityInternalPermission(); 3101 final long ident = Binder.clearCallingIdentity(); 3102 try { 3103 final ContentResolver cr = mContext.getContentResolver(); 3104 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3105 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3106 intent.putExtra("state", enable); 3107 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3108 } finally { 3109 Binder.restoreCallingIdentity(ident); 3110 } 3111 } 3112 3113 private void onUserStart(int userId) { 3114 synchronized(mVpns) { 3115 Vpn userVpn = mVpns.get(userId); 3116 if (userVpn != null) { 3117 loge("Starting user already has a VPN"); 3118 return; 3119 } 3120 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3121 mVpns.put(userId, userVpn); 3122 } 3123 } 3124 3125 private void onUserStop(int userId) { 3126 synchronized(mVpns) { 3127 Vpn userVpn = mVpns.get(userId); 3128 if (userVpn == null) { 3129 loge("Stopping user has no VPN"); 3130 return; 3131 } 3132 mVpns.delete(userId); 3133 } 3134 } 3135 3136 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3137 @Override 3138 public void onReceive(Context context, Intent intent) { 3139 final String action = intent.getAction(); 3140 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3141 if (userId == UserHandle.USER_NULL) return; 3142 3143 if (Intent.ACTION_USER_STARTING.equals(action)) { 3144 onUserStart(userId); 3145 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3146 onUserStop(userId); 3147 } 3148 } 3149 }; 3150 3151 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3152 new HashMap<Messenger, NetworkFactoryInfo>(); 3153 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3154 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3155 3156 private static class NetworkFactoryInfo { 3157 public final String name; 3158 public final Messenger messenger; 3159 public final AsyncChannel asyncChannel; 3160 3161 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3162 this.name = name; 3163 this.messenger = messenger; 3164 this.asyncChannel = asyncChannel; 3165 } 3166 } 3167 3168 /** 3169 * Tracks info about the requester. 3170 * Also used to notice when the calling process dies so we can self-expire 3171 */ 3172 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3173 static final boolean REQUEST = true; 3174 static final boolean LISTEN = false; 3175 3176 final NetworkRequest request; 3177 final PendingIntent mPendingIntent; 3178 boolean mPendingIntentSent; 3179 private final IBinder mBinder; 3180 final int mPid; 3181 final int mUid; 3182 final Messenger messenger; 3183 final boolean isRequest; 3184 3185 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3186 request = r; 3187 mPendingIntent = pi; 3188 messenger = null; 3189 mBinder = null; 3190 mPid = getCallingPid(); 3191 mUid = getCallingUid(); 3192 this.isRequest = isRequest; 3193 } 3194 3195 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3196 super(); 3197 messenger = m; 3198 request = r; 3199 mBinder = binder; 3200 mPid = getCallingPid(); 3201 mUid = getCallingUid(); 3202 this.isRequest = isRequest; 3203 mPendingIntent = null; 3204 3205 try { 3206 mBinder.linkToDeath(this, 0); 3207 } catch (RemoteException e) { 3208 binderDied(); 3209 } 3210 } 3211 3212 void unlinkDeathRecipient() { 3213 if (mBinder != null) { 3214 mBinder.unlinkToDeath(this, 0); 3215 } 3216 } 3217 3218 public void binderDied() { 3219 log("ConnectivityService NetworkRequestInfo binderDied(" + 3220 request + ", " + mBinder + ")"); 3221 releaseNetworkRequest(request); 3222 } 3223 3224 public String toString() { 3225 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3226 mPid + " for " + request + 3227 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3228 } 3229 } 3230 3231 @Override 3232 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3233 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3234 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3235 enforceNetworkRequestPermissions(networkCapabilities); 3236 enforceMeteredApnPolicy(networkCapabilities); 3237 3238 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3239 throw new IllegalArgumentException("Bad timeout specified"); 3240 } 3241 3242 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3243 nextNetworkRequestId()); 3244 if (DBG) log("requestNetwork for " + networkRequest); 3245 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3246 NetworkRequestInfo.REQUEST); 3247 3248 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3249 if (timeoutMs > 0) { 3250 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3251 nri), timeoutMs); 3252 } 3253 return networkRequest; 3254 } 3255 3256 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3257 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3258 == false) { 3259 enforceConnectivityInternalPermission(); 3260 } else { 3261 enforceChangePermission(); 3262 } 3263 } 3264 3265 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3266 // if UID is restricted, don't allow them to bring up metered APNs 3267 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3268 == false) { 3269 final int uidRules; 3270 final int uid = Binder.getCallingUid(); 3271 synchronized(mRulesLock) { 3272 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3273 } 3274 if ((uidRules & RULE_REJECT_METERED) != 0) { 3275 // we could silently fail or we can filter the available nets to only give 3276 // them those they have access to. Chose the more useful 3277 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3278 } 3279 } 3280 } 3281 3282 @Override 3283 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3284 PendingIntent operation) { 3285 checkNotNull(operation, "PendingIntent cannot be null."); 3286 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3287 enforceNetworkRequestPermissions(networkCapabilities); 3288 enforceMeteredApnPolicy(networkCapabilities); 3289 3290 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3291 nextNetworkRequestId()); 3292 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3293 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3294 NetworkRequestInfo.REQUEST); 3295 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3296 nri)); 3297 return networkRequest; 3298 } 3299 3300 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3301 mHandler.sendMessageDelayed( 3302 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3303 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3304 } 3305 3306 @Override 3307 public void releasePendingNetworkRequest(PendingIntent operation) { 3308 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3309 getCallingUid(), 0, operation)); 3310 } 3311 3312 @Override 3313 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3314 Messenger messenger, IBinder binder) { 3315 enforceAccessPermission(); 3316 3317 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3318 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3319 if (DBG) log("listenForNetwork for " + networkRequest); 3320 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3321 NetworkRequestInfo.LISTEN); 3322 3323 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3324 return networkRequest; 3325 } 3326 3327 @Override 3328 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3329 PendingIntent operation) { 3330 } 3331 3332 @Override 3333 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3334 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3335 0, networkRequest)); 3336 } 3337 3338 @Override 3339 public void registerNetworkFactory(Messenger messenger, String name) { 3340 enforceConnectivityInternalPermission(); 3341 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3342 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3343 } 3344 3345 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3346 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3347 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3348 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3349 } 3350 3351 @Override 3352 public void unregisterNetworkFactory(Messenger messenger) { 3353 enforceConnectivityInternalPermission(); 3354 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3355 } 3356 3357 private void handleUnregisterNetworkFactory(Messenger messenger) { 3358 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3359 if (nfi == null) { 3360 loge("Failed to find Messenger in unregisterNetworkFactory"); 3361 return; 3362 } 3363 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3364 } 3365 3366 /** 3367 * NetworkAgentInfo supporting a request by requestId. 3368 * These have already been vetted (their Capabilities satisfy the request) 3369 * and the are the highest scored network available. 3370 * the are keyed off the Requests requestId. 3371 */ 3372 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3373 new SparseArray<NetworkAgentInfo>(); 3374 3375 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3376 new SparseArray<NetworkAgentInfo>(); 3377 3378 // NetworkAgentInfo keyed off its connecting messenger 3379 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3380 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3381 new HashMap<Messenger, NetworkAgentInfo>(); 3382 3383 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3384 private final NetworkRequest mDefaultRequest; 3385 3386 private NetworkAgentInfo getDefaultNetwork() { 3387 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3388 } 3389 3390 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3391 return nai == getDefaultNetwork(); 3392 } 3393 3394 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3395 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3396 int currentScore, NetworkMisc networkMisc) { 3397 enforceConnectivityInternalPermission(); 3398 3399 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3400 // satisfies mDefaultRequest. 3401 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3402 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3403 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3404 new NetworkMisc(networkMisc), mDefaultRequest); 3405 synchronized (this) { 3406 nai.networkMonitor.systemReady = mSystemReady; 3407 } 3408 if (DBG) log("registerNetworkAgent " + nai); 3409 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3410 } 3411 3412 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3413 if (VDBG) log("Got NetworkAgent Messenger"); 3414 mNetworkAgentInfos.put(na.messenger, na); 3415 assignNextNetId(na); 3416 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3417 NetworkInfo networkInfo = na.networkInfo; 3418 na.networkInfo = null; 3419 updateNetworkInfo(na, networkInfo); 3420 } 3421 3422 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3423 LinkProperties newLp = networkAgent.linkProperties; 3424 int netId = networkAgent.network.netId; 3425 3426 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3427 // we do anything else, make sure its LinkProperties are accurate. 3428 if (networkAgent.clatd != null) { 3429 networkAgent.clatd.fixupLinkProperties(oldLp); 3430 } 3431 3432 updateInterfaces(newLp, oldLp, netId); 3433 updateMtu(newLp, oldLp); 3434 // TODO - figure out what to do for clat 3435// for (LinkProperties lp : newLp.getStackedLinks()) { 3436// updateMtu(lp, null); 3437// } 3438 updateTcpBufferSizes(networkAgent); 3439 3440 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3441 // For now, use it only when the network has Internet access. http://b/18327075 3442 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3443 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3444 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3445 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3446 3447 updateClat(newLp, oldLp, networkAgent); 3448 if (isDefaultNetwork(networkAgent)) { 3449 handleApplyDefaultProxy(newLp.getHttpProxy()); 3450 } else { 3451 updateProxy(newLp, oldLp, networkAgent); 3452 } 3453 // TODO - move this check to cover the whole function 3454 if (!Objects.equals(newLp, oldLp)) { 3455 notifyIfacesChanged(); 3456 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3457 } 3458 } 3459 3460 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3461 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3462 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3463 3464 if (!wasRunningClat && shouldRunClat) { 3465 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3466 nai.clatd.start(); 3467 } else if (wasRunningClat && !shouldRunClat) { 3468 nai.clatd.stop(); 3469 } 3470 } 3471 3472 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3473 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3474 if (oldLp != null) { 3475 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3476 } else if (newLp != null) { 3477 interfaceDiff.added = newLp.getAllInterfaceNames(); 3478 } 3479 for (String iface : interfaceDiff.added) { 3480 try { 3481 if (DBG) log("Adding iface " + iface + " to network " + netId); 3482 mNetd.addInterfaceToNetwork(iface, netId); 3483 } catch (Exception e) { 3484 loge("Exception adding interface: " + e); 3485 } 3486 } 3487 for (String iface : interfaceDiff.removed) { 3488 try { 3489 if (DBG) log("Removing iface " + iface + " from network " + netId); 3490 mNetd.removeInterfaceFromNetwork(iface, netId); 3491 } catch (Exception e) { 3492 loge("Exception removing interface: " + e); 3493 } 3494 } 3495 } 3496 3497 /** 3498 * Have netd update routes from oldLp to newLp. 3499 * @return true if routes changed between oldLp and newLp 3500 */ 3501 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3502 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3503 if (oldLp != null) { 3504 routeDiff = oldLp.compareAllRoutes(newLp); 3505 } else if (newLp != null) { 3506 routeDiff.added = newLp.getAllRoutes(); 3507 } 3508 3509 // add routes before removing old in case it helps with continuous connectivity 3510 3511 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3512 for (RouteInfo route : routeDiff.added) { 3513 if (route.hasGateway()) continue; 3514 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3515 try { 3516 mNetd.addRoute(netId, route); 3517 } catch (Exception e) { 3518 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3519 loge("Exception in addRoute for non-gateway: " + e); 3520 } 3521 } 3522 } 3523 for (RouteInfo route : routeDiff.added) { 3524 if (route.hasGateway() == false) continue; 3525 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3526 try { 3527 mNetd.addRoute(netId, route); 3528 } catch (Exception e) { 3529 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3530 loge("Exception in addRoute for gateway: " + e); 3531 } 3532 } 3533 } 3534 3535 for (RouteInfo route : routeDiff.removed) { 3536 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3537 try { 3538 mNetd.removeRoute(netId, route); 3539 } catch (Exception e) { 3540 loge("Exception in removeRoute: " + e); 3541 } 3542 } 3543 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3544 } 3545 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3546 boolean flush, boolean useDefaultDns) { 3547 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3548 Collection<InetAddress> dnses = newLp.getDnsServers(); 3549 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3550 dnses = new ArrayList(); 3551 dnses.add(mDefaultDns); 3552 if (DBG) { 3553 loge("no dns provided for netId " + netId + ", so using defaults"); 3554 } 3555 } 3556 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3557 try { 3558 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3559 newLp.getDomains()); 3560 } catch (Exception e) { 3561 loge("Exception in setDnsServersForNetwork: " + e); 3562 } 3563 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3564 if (defaultNai != null && defaultNai.network.netId == netId) { 3565 setDefaultDnsSystemProperties(dnses); 3566 } 3567 flushVmDnsCache(); 3568 } else if (flush) { 3569 try { 3570 mNetd.flushNetworkDnsCache(netId); 3571 } catch (Exception e) { 3572 loge("Exception in flushNetworkDnsCache: " + e); 3573 } 3574 flushVmDnsCache(); 3575 } 3576 } 3577 3578 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3579 int last = 0; 3580 for (InetAddress dns : dnses) { 3581 ++last; 3582 String key = "net.dns" + last; 3583 String value = dns.getHostAddress(); 3584 SystemProperties.set(key, value); 3585 } 3586 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3587 String key = "net.dns" + i; 3588 SystemProperties.set(key, ""); 3589 } 3590 mNumDnsEntries = last; 3591 } 3592 3593 private void updateCapabilities(NetworkAgentInfo networkAgent, 3594 NetworkCapabilities networkCapabilities) { 3595 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3596 synchronized (networkAgent) { 3597 networkAgent.networkCapabilities = networkCapabilities; 3598 } 3599 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3600 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3601 } 3602 } 3603 3604 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3605 for (int i = 0; i < nai.networkRequests.size(); i++) { 3606 NetworkRequest nr = nai.networkRequests.valueAt(i); 3607 // Don't send listening requests to factories. b/17393458 3608 if (!isRequest(nr)) continue; 3609 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3610 } 3611 } 3612 3613 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3614 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3615 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3616 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3617 networkRequest); 3618 } 3619 } 3620 3621 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3622 int notificationType) { 3623 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 3624 Intent intent = new Intent(); 3625 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3626 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3627 nri.mPendingIntentSent = true; 3628 sendIntent(nri.mPendingIntent, intent); 3629 } 3630 // else not handled 3631 } 3632 3633 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3634 mPendingIntentWakeLock.acquire(); 3635 try { 3636 if (DBG) log("Sending " + pendingIntent); 3637 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3638 } catch (PendingIntent.CanceledException e) { 3639 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3640 mPendingIntentWakeLock.release(); 3641 releasePendingNetworkRequest(pendingIntent); 3642 } 3643 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3644 } 3645 3646 @Override 3647 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3648 String resultData, Bundle resultExtras) { 3649 if (DBG) log("Finished sending " + pendingIntent); 3650 mPendingIntentWakeLock.release(); 3651 // Release with a delay so the receiving client has an opportunity to put in its 3652 // own request. 3653 releasePendingNetworkRequestWithDelay(pendingIntent); 3654 } 3655 3656 private void callCallbackForRequest(NetworkRequestInfo nri, 3657 NetworkAgentInfo networkAgent, int notificationType) { 3658 if (nri.messenger == null) return; // Default request has no msgr 3659 Bundle bundle = new Bundle(); 3660 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3661 new NetworkRequest(nri.request)); 3662 Message msg = Message.obtain(); 3663 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3664 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3665 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3666 } 3667 switch (notificationType) { 3668 case ConnectivityManager.CALLBACK_LOSING: { 3669 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3670 break; 3671 } 3672 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3673 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3674 new NetworkCapabilities(networkAgent.networkCapabilities)); 3675 break; 3676 } 3677 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3678 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3679 new LinkProperties(networkAgent.linkProperties)); 3680 break; 3681 } 3682 } 3683 msg.what = notificationType; 3684 msg.setData(bundle); 3685 try { 3686 if (VDBG) { 3687 log("sending notification " + notifyTypeToName(notificationType) + 3688 " for " + nri.request); 3689 } 3690 nri.messenger.send(msg); 3691 } catch (RemoteException e) { 3692 // may occur naturally in the race of binder death. 3693 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3694 } 3695 } 3696 3697 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3698 for (int i = 0; i < nai.networkRequests.size(); i++) { 3699 NetworkRequest nr = nai.networkRequests.valueAt(i); 3700 // Ignore listening requests. 3701 if (!isRequest(nr)) continue; 3702 loge("Dead network still had at least " + nr); 3703 break; 3704 } 3705 nai.asyncChannel.disconnect(); 3706 } 3707 3708 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3709 if (oldNetwork == null) { 3710 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3711 return; 3712 } 3713 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3714 teardownUnneededNetwork(oldNetwork); 3715 } 3716 3717 private void makeDefault(NetworkAgentInfo newNetwork) { 3718 if (DBG) log("Switching to new default network: " + newNetwork); 3719 setupDataActivityTracking(newNetwork); 3720 try { 3721 mNetd.setDefaultNetId(newNetwork.network.netId); 3722 } catch (Exception e) { 3723 loge("Exception setting default network :" + e); 3724 } 3725 notifyLockdownVpn(newNetwork); 3726 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3727 updateTcpBufferSizes(newNetwork); 3728 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 3729 } 3730 3731 // Handles a network appearing or improving its score. 3732 // 3733 // - Evaluates all current NetworkRequests that can be 3734 // satisfied by newNetwork, and reassigns to newNetwork 3735 // any such requests for which newNetwork is the best. 3736 // 3737 // - Lingers any validated Networks that as a result are no longer 3738 // needed. A network is needed if it is the best network for 3739 // one or more NetworkRequests, or if it is a VPN. 3740 // 3741 // - Tears down newNetwork if it just became validated 3742 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 3743 // 3744 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 3745 // networks that have no chance (i.e. even if validated) 3746 // of becoming the highest scoring network. 3747 // 3748 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3749 // it does not remove NetworkRequests that other Networks could better satisfy. 3750 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3751 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3752 // as it performs better by a factor of the number of Networks. 3753 // 3754 // @param newNetwork is the network to be matched against NetworkRequests. 3755 // @param nascent indicates if newNetwork just became validated, in which case it should be 3756 // torn down if unneeded. 3757 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 3758 // performed to tear down unvalidated networks that have no chance (i.e. even if 3759 // validated) of becoming the highest scoring network. 3760 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 3761 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 3762 if (!newNetwork.created) return; 3763 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 3764 loge("ERROR: nascent network not validated."); 3765 } 3766 boolean keep = newNetwork.isVPN(); 3767 boolean isNewDefault = false; 3768 NetworkAgentInfo oldDefaultNetwork = null; 3769 if (DBG) log("rematching " + newNetwork.name()); 3770 // Find and migrate to this Network any NetworkRequests for 3771 // which this network is now the best. 3772 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3773 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3774 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3775 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 3776 if (newNetwork == currentNetwork) { 3777 if (DBG) { 3778 log("Network " + newNetwork.name() + " was already satisfying" + 3779 " request " + nri.request.requestId + ". No change."); 3780 } 3781 keep = true; 3782 continue; 3783 } 3784 3785 // check if it satisfies the NetworkCapabilities 3786 if (VDBG) log(" checking if request is satisfied: " + nri.request); 3787 if (newNetwork.satisfies(nri.request)) { 3788 if (!nri.isRequest) { 3789 // This is not a request, it's a callback listener. 3790 // Add it to newNetwork regardless of score. 3791 newNetwork.addRequest(nri.request); 3792 continue; 3793 } 3794 3795 // next check if it's better than any current network we're using for 3796 // this request 3797 if (VDBG) { 3798 log("currentScore = " + 3799 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 3800 ", newScore = " + newNetwork.getCurrentScore()); 3801 } 3802 if (currentNetwork == null || 3803 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 3804 if (currentNetwork != null) { 3805 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 3806 currentNetwork.networkRequests.remove(nri.request.requestId); 3807 currentNetwork.networkLingered.add(nri.request); 3808 affectedNetworks.add(currentNetwork); 3809 } else { 3810 if (DBG) log(" accepting network in place of null"); 3811 } 3812 unlinger(newNetwork); 3813 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 3814 newNetwork.addRequest(nri.request); 3815 keep = true; 3816 // Tell NetworkFactories about the new score, so they can stop 3817 // trying to connect if they know they cannot match it. 3818 // TODO - this could get expensive if we have alot of requests for this 3819 // network. Think about if there is a way to reduce this. Push 3820 // netid->request mapping to each factory? 3821 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 3822 if (mDefaultRequest.requestId == nri.request.requestId) { 3823 isNewDefault = true; 3824 oldDefaultNetwork = currentNetwork; 3825 } 3826 } 3827 } 3828 } 3829 // Linger any networks that are no longer needed. 3830 for (NetworkAgentInfo nai : affectedNetworks) { 3831 if (nai.everValidated && unneeded(nai)) { 3832 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 3833 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 3834 } else { 3835 unlinger(nai); 3836 } 3837 } 3838 if (keep) { 3839 if (isNewDefault) { 3840 // Notify system services that this network is up. 3841 makeDefault(newNetwork); 3842 synchronized (ConnectivityService.this) { 3843 // have a new default network, release the transition wakelock in 3844 // a second if it's held. The second pause is to allow apps 3845 // to reconnect over the new network 3846 if (mNetTransitionWakeLock.isHeld()) { 3847 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3848 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3849 mNetTransitionWakeLockSerialNumber, 0), 3850 1000); 3851 } 3852 } 3853 } 3854 3855 // do this after the default net is switched, but 3856 // before LegacyTypeTracker sends legacy broadcasts 3857 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 3858 3859 if (isNewDefault) { 3860 // Maintain the illusion: since the legacy API only 3861 // understands one network at a time, we must pretend 3862 // that the current default network disconnected before 3863 // the new one connected. 3864 if (oldDefaultNetwork != null) { 3865 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 3866 oldDefaultNetwork); 3867 } 3868 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 3869 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 3870 notifyLockdownVpn(newNetwork); 3871 } 3872 3873 // Notify battery stats service about this network, both the normal 3874 // interface and any stacked links. 3875 // TODO: Avoid redoing this; this must only be done once when a network comes online. 3876 try { 3877 final IBatteryStats bs = BatteryStatsService.getService(); 3878 final int type = newNetwork.networkInfo.getType(); 3879 3880 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 3881 bs.noteNetworkInterfaceType(baseIface, type); 3882 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 3883 final String stackedIface = stacked.getInterfaceName(); 3884 bs.noteNetworkInterfaceType(stackedIface, type); 3885 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 3886 } 3887 } catch (RemoteException ignored) { 3888 } 3889 3890 // This has to happen after the notifyNetworkCallbacks as that tickles each 3891 // ConnectivityManager instance so that legacy requests correctly bind dns 3892 // requests to this network. The legacy users are listening for this bcast 3893 // and will generally do a dns request so they can ensureRouteToHost and if 3894 // they do that before the callbacks happen they'll use the default network. 3895 // 3896 // TODO: Is there still a race here? We send the broadcast 3897 // after sending the callback, but if the app can receive the 3898 // broadcast before the callback, it might still break. 3899 // 3900 // This *does* introduce a race where if the user uses the new api 3901 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 3902 // they may get old info. Reverse this after the old startUsing api is removed. 3903 // This is on top of the multiple intent sequencing referenced in the todo above. 3904 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 3905 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 3906 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 3907 // legacy type tracker filters out repeat adds 3908 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 3909 } 3910 } 3911 3912 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 3913 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 3914 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 3915 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 3916 if (newNetwork.isVPN()) { 3917 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 3918 } 3919 } else if (nascent == NascentState.JUST_VALIDATED) { 3920 // Only tear down newly validated networks here. Leave unvalidated to either become 3921 // validated (and get evaluated against peers, one losing here), or get reaped (see 3922 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 3923 // network. Networks that have been up for a while and are validated should be torn 3924 // down via the lingering process so communication on that network is given time to 3925 // wrap up. 3926 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 3927 teardownUnneededNetwork(newNetwork); 3928 } 3929 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 3930 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 3931 if (!nai.everValidated && unneeded(nai)) { 3932 if (DBG) log("Reaping " + nai.name()); 3933 teardownUnneededNetwork(nai); 3934 } 3935 } 3936 } 3937 } 3938 3939 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 3940 // being disconnected. 3941 // If only one Network's score or capabilities have been modified since the last time 3942 // this function was called, pass this Network in via the "changed" arugment, otherwise 3943 // pass null. 3944 // If only one Network has been changed but its NetworkCapabilities have not changed, 3945 // pass in the Network's score (from getCurrentScore()) prior to the change via 3946 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 3947 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 3948 // TODO: This may get slow. The "changed" parameter is provided for future optimization 3949 // to avoid the slowness. It is not simply enough to process just "changed", for 3950 // example in the case where "changed"'s score decreases and another network should begin 3951 // satifying a NetworkRequest that "changed" currently satisfies. 3952 3953 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 3954 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 3955 // rematchNetworkAndRequests() handles. 3956 if (changed != null && oldScore < changed.getCurrentScore()) { 3957 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 3958 ReapUnvalidatedNetworks.REAP); 3959 } else { 3960 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 3961 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 3962 NascentState.NOT_JUST_VALIDATED, 3963 // Only reap the last time through the loop. Reaping before all rematching 3964 // is complete could incorrectly teardown a network that hasn't yet been 3965 // rematched. 3966 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 3967 : ReapUnvalidatedNetworks.REAP); 3968 } 3969 } 3970 } 3971 3972 private void updateInetCondition(NetworkAgentInfo nai) { 3973 // Don't bother updating until we've graduated to validated at least once. 3974 if (!nai.everValidated) return; 3975 // For now only update icons for default connection. 3976 // TODO: Update WiFi and cellular icons separately. b/17237507 3977 if (!isDefaultNetwork(nai)) return; 3978 3979 int newInetCondition = nai.lastValidated ? 100 : 0; 3980 // Don't repeat publish. 3981 if (newInetCondition == mDefaultInetConditionPublished) return; 3982 3983 mDefaultInetConditionPublished = newInetCondition; 3984 sendInetConditionBroadcast(nai.networkInfo); 3985 } 3986 3987 private void notifyLockdownVpn(NetworkAgentInfo nai) { 3988 if (mLockdownTracker != null) { 3989 if (nai != null && nai.isVPN()) { 3990 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 3991 } else { 3992 mLockdownTracker.onNetworkInfoChanged(); 3993 } 3994 } 3995 } 3996 3997 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 3998 NetworkInfo.State state = newInfo.getState(); 3999 NetworkInfo oldInfo = null; 4000 synchronized (networkAgent) { 4001 oldInfo = networkAgent.networkInfo; 4002 networkAgent.networkInfo = newInfo; 4003 } 4004 notifyLockdownVpn(networkAgent); 4005 4006 if (oldInfo != null && oldInfo.getState() == state) { 4007 if (VDBG) log("ignoring duplicate network state non-change"); 4008 return; 4009 } 4010 if (DBG) { 4011 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4012 (oldInfo == null ? "null" : oldInfo.getState()) + 4013 " to " + state); 4014 } 4015 4016 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4017 try { 4018 // This should never fail. Specifying an already in use NetID will cause failure. 4019 if (networkAgent.isVPN()) { 4020 mNetd.createVirtualNetwork(networkAgent.network.netId, 4021 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4022 (networkAgent.networkMisc == null || 4023 !networkAgent.networkMisc.allowBypass)); 4024 } else { 4025 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4026 } 4027 } catch (Exception e) { 4028 loge("Error creating network " + networkAgent.network.netId + ": " 4029 + e.getMessage()); 4030 return; 4031 } 4032 networkAgent.created = true; 4033 updateLinkProperties(networkAgent, null); 4034 notifyIfacesChanged(); 4035 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4036 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4037 if (networkAgent.isVPN()) { 4038 // Temporarily disable the default proxy (not global). 4039 synchronized (mProxyLock) { 4040 if (!mDefaultProxyDisabled) { 4041 mDefaultProxyDisabled = true; 4042 if (mGlobalProxy == null && mDefaultProxy != null) { 4043 sendProxyBroadcast(null); 4044 } 4045 } 4046 } 4047 // TODO: support proxy per network. 4048 } 4049 // Consider network even though it is not yet validated. 4050 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4051 ReapUnvalidatedNetworks.REAP); 4052 } else if (state == NetworkInfo.State.DISCONNECTED || 4053 state == NetworkInfo.State.SUSPENDED) { 4054 networkAgent.asyncChannel.disconnect(); 4055 if (networkAgent.isVPN()) { 4056 synchronized (mProxyLock) { 4057 if (mDefaultProxyDisabled) { 4058 mDefaultProxyDisabled = false; 4059 if (mGlobalProxy == null && mDefaultProxy != null) { 4060 sendProxyBroadcast(mDefaultProxy); 4061 } 4062 } 4063 } 4064 } 4065 } 4066 } 4067 4068 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4069 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4070 if (score < 0) { 4071 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4072 "). Bumping score to min of 0"); 4073 score = 0; 4074 } 4075 4076 final int oldScore = nai.getCurrentScore(); 4077 nai.setCurrentScore(score); 4078 4079 rematchAllNetworksAndRequests(nai, oldScore); 4080 4081 sendUpdatedScoreToFactories(nai); 4082 } 4083 4084 // notify only this one new request of the current state 4085 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4086 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4087 // TODO - read state from monitor to decide what to send. 4088// if (nai.networkMonitor.isLingering()) { 4089// notifyType = NetworkCallbacks.LOSING; 4090// } else if (nai.networkMonitor.isEvaluating()) { 4091// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4092// } 4093 if (nri.mPendingIntent == null) { 4094 callCallbackForRequest(nri, nai, notifyType); 4095 } else { 4096 sendPendingIntentForRequest(nri, nai, notifyType); 4097 } 4098 } 4099 4100 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4101 // The NetworkInfo we actually send out has no bearing on the real 4102 // state of affairs. For example, if the default connection is mobile, 4103 // and a request for HIPRI has just gone away, we need to pretend that 4104 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4105 // the state to DISCONNECTED, even though the network is of type MOBILE 4106 // and is still connected. 4107 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4108 info.setType(type); 4109 if (connected) { 4110 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4111 sendConnectedBroadcast(info); 4112 } else { 4113 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4114 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4115 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4116 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4117 if (info.isFailover()) { 4118 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4119 nai.networkInfo.setFailover(false); 4120 } 4121 if (info.getReason() != null) { 4122 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4123 } 4124 if (info.getExtraInfo() != null) { 4125 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4126 } 4127 NetworkAgentInfo newDefaultAgent = null; 4128 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4129 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4130 if (newDefaultAgent != null) { 4131 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4132 newDefaultAgent.networkInfo); 4133 } else { 4134 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4135 } 4136 } 4137 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4138 mDefaultInetConditionPublished); 4139 final Intent immediateIntent = new Intent(intent); 4140 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4141 sendStickyBroadcast(immediateIntent); 4142 sendStickyBroadcast(intent); 4143 if (newDefaultAgent != null) { 4144 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4145 } 4146 } 4147 } 4148 4149 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4150 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4151 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4152 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4153 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4154 if (VDBG) log(" sending notification for " + nr); 4155 if (nri.mPendingIntent == null) { 4156 callCallbackForRequest(nri, networkAgent, notifyType); 4157 } else { 4158 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4159 } 4160 } 4161 } 4162 4163 private String notifyTypeToName(int notifyType) { 4164 switch (notifyType) { 4165 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4166 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4167 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4168 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4169 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4170 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4171 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4172 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4173 } 4174 return "UNKNOWN"; 4175 } 4176 4177 /** 4178 * Notify other system services that set of active ifaces has changed. 4179 */ 4180 private void notifyIfacesChanged() { 4181 try { 4182 mStatsService.forceUpdateIfaces(); 4183 } catch (Exception ignored) { 4184 } 4185 } 4186 4187 @Override 4188 public boolean addVpnAddress(String address, int prefixLength) { 4189 throwIfLockdownEnabled(); 4190 int user = UserHandle.getUserId(Binder.getCallingUid()); 4191 synchronized (mVpns) { 4192 return mVpns.get(user).addAddress(address, prefixLength); 4193 } 4194 } 4195 4196 @Override 4197 public boolean removeVpnAddress(String address, int prefixLength) { 4198 throwIfLockdownEnabled(); 4199 int user = UserHandle.getUserId(Binder.getCallingUid()); 4200 synchronized (mVpns) { 4201 return mVpns.get(user).removeAddress(address, prefixLength); 4202 } 4203 } 4204 4205 @Override 4206 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4207 throwIfLockdownEnabled(); 4208 int user = UserHandle.getUserId(Binder.getCallingUid()); 4209 synchronized (mVpns) { 4210 return mVpns.get(user).setUnderlyingNetworks(networks); 4211 } 4212 } 4213} 4214