ConnectivityService.java revision 2c22a91d4c1399cdbe2ade5f697aeb0f560e3f03
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 22import static android.net.ConnectivityManager.NETID_UNSET; 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.annotation.Nullable; 31import android.app.AlarmManager; 32import android.app.Notification; 33import android.app.NotificationManager; 34import android.app.PendingIntent; 35import android.content.BroadcastReceiver; 36import android.content.ContentResolver; 37import android.content.Context; 38import android.content.Intent; 39import android.content.IntentFilter; 40import android.content.pm.PackageManager; 41import android.content.res.Configuration; 42import android.content.res.Resources; 43import android.database.ContentObserver; 44import android.net.ConnectivityManager; 45import android.net.IConnectivityManager; 46import android.net.INetworkManagementEventObserver; 47import android.net.INetworkPolicyListener; 48import android.net.INetworkPolicyManager; 49import android.net.INetworkStatsService; 50import android.net.LinkProperties; 51import android.net.LinkProperties.CompareResult; 52import android.net.Network; 53import android.net.NetworkAgent; 54import android.net.NetworkCapabilities; 55import android.net.NetworkConfig; 56import android.net.NetworkInfo; 57import android.net.NetworkInfo.DetailedState; 58import android.net.NetworkMisc; 59import android.net.NetworkQuotaInfo; 60import android.net.NetworkRequest; 61import android.net.NetworkState; 62import android.net.NetworkUtils; 63import android.net.Proxy; 64import android.net.ProxyInfo; 65import android.net.RouteInfo; 66import android.net.UidRange; 67import android.net.Uri; 68import android.os.Binder; 69import android.os.Bundle; 70import android.os.FileUtils; 71import android.os.Handler; 72import android.os.HandlerThread; 73import android.os.IBinder; 74import android.os.INetworkManagementService; 75import android.os.Looper; 76import android.os.Message; 77import android.os.Messenger; 78import android.os.ParcelFileDescriptor; 79import android.os.PowerManager; 80import android.os.Process; 81import android.os.RemoteException; 82import android.os.SystemClock; 83import android.os.SystemProperties; 84import android.os.UserHandle; 85import android.os.UserManager; 86import android.provider.Settings; 87import android.security.Credentials; 88import android.security.KeyStore; 89import android.telephony.TelephonyManager; 90import android.text.TextUtils; 91import android.util.Slog; 92import android.util.SparseArray; 93import android.util.SparseBooleanArray; 94import android.util.SparseIntArray; 95import android.util.Xml; 96 97import com.android.internal.R; 98import com.android.internal.annotations.GuardedBy; 99import com.android.internal.app.IBatteryStats; 100import com.android.internal.net.LegacyVpnInfo; 101import com.android.internal.net.NetworkStatsFactory; 102import com.android.internal.net.VpnConfig; 103import com.android.internal.net.VpnInfo; 104import com.android.internal.net.VpnProfile; 105import com.android.internal.telephony.DctConstants; 106import com.android.internal.util.AsyncChannel; 107import com.android.internal.util.IndentingPrintWriter; 108import com.android.internal.util.XmlUtils; 109import com.android.server.am.BatteryStatsService; 110import com.android.server.connectivity.DataConnectionStats; 111import com.android.server.connectivity.Nat464Xlat; 112import com.android.server.connectivity.NetworkAgentInfo; 113import com.android.server.connectivity.NetworkMonitor; 114import com.android.server.connectivity.PacManager; 115import com.android.server.connectivity.PermissionMonitor; 116import com.android.server.connectivity.Tethering; 117import com.android.server.connectivity.Vpn; 118import com.android.server.net.BaseNetworkObserver; 119import com.android.server.net.LockdownVpnTracker; 120import com.google.android.collect.Lists; 121import com.google.android.collect.Sets; 122 123import org.xmlpull.v1.XmlPullParser; 124import org.xmlpull.v1.XmlPullParserException; 125 126import java.io.File; 127import java.io.FileDescriptor; 128import java.io.FileNotFoundException; 129import java.io.FileReader; 130import java.io.IOException; 131import java.io.PrintWriter; 132import java.net.Inet4Address; 133import java.net.InetAddress; 134import java.net.UnknownHostException; 135import java.util.ArrayList; 136import java.util.Arrays; 137import java.util.Collection; 138import java.util.HashMap; 139import java.util.HashSet; 140import java.util.Iterator; 141import java.util.List; 142import java.util.Map; 143import java.util.Objects; 144import java.util.concurrent.atomic.AtomicInteger; 145 146/** 147 * @hide 148 */ 149public class ConnectivityService extends IConnectivityManager.Stub 150 implements PendingIntent.OnFinished { 151 private static final String TAG = "ConnectivityService"; 152 153 private static final boolean DBG = true; 154 private static final boolean VDBG = false; 155 156 private static final boolean LOGD_RULES = false; 157 158 // TODO: create better separation between radio types and network types 159 160 // how long to wait before switching back to a radio's default network 161 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 162 // system property that can override the above value 163 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 164 "android.telephony.apn-restore"; 165 166 // How long to wait before putting up a "This network doesn't have an Internet connection, 167 // connect anyway?" dialog after the user selects a network that doesn't validate. 168 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 169 170 // How long to delay to removal of a pending intent based request. 171 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 172 private final int mReleasePendingIntentDelayMs; 173 174 private Tethering mTethering; 175 176 private final PermissionMonitor mPermissionMonitor; 177 178 private KeyStore mKeyStore; 179 180 @GuardedBy("mVpns") 181 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 182 183 private boolean mLockdownEnabled; 184 private LockdownVpnTracker mLockdownTracker; 185 186 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 187 private Object mRulesLock = new Object(); 188 /** Currently active network rules by UID. */ 189 private SparseIntArray mUidRules = new SparseIntArray(); 190 /** Set of ifaces that are costly. */ 191 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 192 193 private Context mContext; 194 private int mNetworkPreference; 195 // 0 is full bad, 100 is full good 196 private int mDefaultInetConditionPublished = 0; 197 198 private Object mDnsLock = new Object(); 199 private int mNumDnsEntries; 200 201 private boolean mTestMode; 202 private static ConnectivityService sServiceInstance; 203 204 private INetworkManagementService mNetd; 205 private INetworkStatsService mStatsService; 206 private INetworkPolicyManager mPolicyManager; 207 208 private String mCurrentTcpBufferSizes; 209 210 private static final int ENABLED = 1; 211 private static final int DISABLED = 0; 212 213 // Arguments to rematchNetworkAndRequests() 214 private enum NascentState { 215 // Indicates a network was just validated for the first time. If the network is found to 216 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 217 JUST_VALIDATED, 218 // Indicates a network was not validated for the first time immediately prior to this call. 219 NOT_JUST_VALIDATED 220 }; 221 private enum ReapUnvalidatedNetworks { 222 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 223 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 224 // known that there may be unvalidated networks that could potentially be reaped, and when 225 // all networks have been rematched against all NetworkRequests. 226 REAP, 227 // Don't reap unvalidated networks. This should be passed when it's known that there are 228 // no unvalidated networks that could potentially be reaped, and when some networks have 229 // not yet been rematched against all NetworkRequests. 230 DONT_REAP 231 }; 232 233 /** 234 * used internally to change our mobile data enabled flag 235 */ 236 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 237 238 /** 239 * used internally to clear a wakelock when transitioning 240 * from one net to another. Clear happens when we get a new 241 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 242 * after a timeout if no network is found (typically 1 min). 243 */ 244 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 245 246 /** 247 * used internally to reload global proxy settings 248 */ 249 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 250 251 /** 252 * used internally to send a sticky broadcast delayed. 253 */ 254 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 255 256 /** 257 * PAC manager has received new port. 258 */ 259 private static final int EVENT_PROXY_HAS_CHANGED = 16; 260 261 /** 262 * used internally when registering NetworkFactories 263 * obj = NetworkFactoryInfo 264 */ 265 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 266 267 /** 268 * used internally when registering NetworkAgents 269 * obj = Messenger 270 */ 271 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 272 273 /** 274 * used to add a network request 275 * includes a NetworkRequestInfo 276 */ 277 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 278 279 /** 280 * indicates a timeout period is over - check if we had a network yet or not 281 * and if not, call the timeout calback (but leave the request live until they 282 * cancel it. 283 * includes a NetworkRequestInfo 284 */ 285 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 286 287 /** 288 * used to add a network listener - no request 289 * includes a NetworkRequestInfo 290 */ 291 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 292 293 /** 294 * used to remove a network request, either a listener or a real request 295 * arg1 = UID of caller 296 * obj = NetworkRequest 297 */ 298 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 299 300 /** 301 * used internally when registering NetworkFactories 302 * obj = Messenger 303 */ 304 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 305 306 /** 307 * used internally to expire a wakelock when transitioning 308 * from one net to another. Expire happens when we fail to find 309 * a new network (typically after 1 minute) - 310 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 311 * a replacement network. 312 */ 313 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 314 315 /** 316 * Used internally to indicate the system is ready. 317 */ 318 private static final int EVENT_SYSTEM_READY = 25; 319 320 /** 321 * used to add a network request with a pending intent 322 * includes a NetworkRequestInfo 323 */ 324 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 325 326 /** 327 * used to remove a pending intent and its associated network request. 328 * arg1 = UID of caller 329 * obj = PendingIntent 330 */ 331 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 332 333 /** 334 * used to specify whether a network should be used even if unvalidated. 335 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 336 * arg2 = whether to remember this choice in the future (1 or 0) 337 * obj = network 338 */ 339 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 340 341 /** 342 * used to ask the user to confirm a connection to an unvalidated network. 343 * obj = network 344 */ 345 private static final int EVENT_PROMPT_UNVALIDATED = 29; 346 347 /** Handler used for internal events. */ 348 final private InternalHandler mHandler; 349 /** Handler used for incoming {@link NetworkStateTracker} events. */ 350 final private NetworkStateTrackerHandler mTrackerHandler; 351 352 private boolean mSystemReady; 353 private Intent mInitialBroadcast; 354 355 private PowerManager.WakeLock mNetTransitionWakeLock; 356 private String mNetTransitionWakeLockCausedBy = ""; 357 private int mNetTransitionWakeLockSerialNumber; 358 private int mNetTransitionWakeLockTimeout; 359 private final PowerManager.WakeLock mPendingIntentWakeLock; 360 361 private InetAddress mDefaultDns; 362 363 // used in DBG mode to track inet condition reports 364 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 365 private ArrayList mInetLog; 366 367 // track the current default http proxy - tell the world if we get a new one (real change) 368 private volatile ProxyInfo mDefaultProxy = null; 369 private Object mProxyLock = new Object(); 370 private boolean mDefaultProxyDisabled = false; 371 372 // track the global proxy. 373 private ProxyInfo mGlobalProxy = null; 374 375 private PacManager mPacManager = null; 376 377 private SettingsObserver mSettingsObserver; 378 379 private UserManager mUserManager; 380 381 NetworkConfig[] mNetConfigs; 382 int mNetworksDefined; 383 384 // the set of network types that can only be enabled by system/sig apps 385 List mProtectedNetworks; 386 387 private DataConnectionStats mDataConnectionStats; 388 389 TelephonyManager mTelephonyManager; 390 391 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 392 private final static int MIN_NET_ID = 100; // some reserved marks 393 private final static int MAX_NET_ID = 65535; 394 private int mNextNetId = MIN_NET_ID; 395 396 // sequence number of NetworkRequests 397 private int mNextNetworkRequestId = 1; 398 399 /** 400 * Implements support for the legacy "one network per network type" model. 401 * 402 * We used to have a static array of NetworkStateTrackers, one for each 403 * network type, but that doesn't work any more now that we can have, 404 * for example, more that one wifi network. This class stores all the 405 * NetworkAgentInfo objects that support a given type, but the legacy 406 * API will only see the first one. 407 * 408 * It serves two main purposes: 409 * 410 * 1. Provide information about "the network for a given type" (since this 411 * API only supports one). 412 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 413 * the first network for a given type changes, or if the default network 414 * changes. 415 */ 416 private class LegacyTypeTracker { 417 418 private static final boolean DBG = true; 419 private static final boolean VDBG = false; 420 private static final String TAG = "CSLegacyTypeTracker"; 421 422 /** 423 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 424 * Each list holds references to all NetworkAgentInfos that are used to 425 * satisfy requests for that network type. 426 * 427 * This array is built out at startup such that an unsupported network 428 * doesn't get an ArrayList instance, making this a tristate: 429 * unsupported, supported but not active and active. 430 * 431 * The actual lists are populated when we scan the network types that 432 * are supported on this device. 433 */ 434 private ArrayList<NetworkAgentInfo> mTypeLists[]; 435 436 public LegacyTypeTracker() { 437 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 438 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 439 } 440 441 public void addSupportedType(int type) { 442 if (mTypeLists[type] != null) { 443 throw new IllegalStateException( 444 "legacy list for type " + type + "already initialized"); 445 } 446 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 447 } 448 449 public boolean isTypeSupported(int type) { 450 return isNetworkTypeValid(type) && mTypeLists[type] != null; 451 } 452 453 public NetworkAgentInfo getNetworkForType(int type) { 454 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 455 return mTypeLists[type].get(0); 456 } else { 457 return null; 458 } 459 } 460 461 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 462 if (DBG) { 463 log("Sending " + (connected ? "connected" : "disconnected") + 464 " broadcast for type " + type + " " + nai.name() + 465 " isDefaultNetwork=" + isDefaultNetwork(nai)); 466 } 467 } 468 469 /** Adds the given network to the specified legacy type list. */ 470 public void add(int type, NetworkAgentInfo nai) { 471 if (!isTypeSupported(type)) { 472 return; // Invalid network type. 473 } 474 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 475 476 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 477 if (list.contains(nai)) { 478 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 479 return; 480 } 481 482 list.add(nai); 483 484 // Send a broadcast if this is the first network of its type or if it's the default. 485 if (list.size() == 1 || isDefaultNetwork(nai)) { 486 maybeLogBroadcast(nai, true, type); 487 sendLegacyNetworkBroadcast(nai, true, type); 488 } 489 } 490 491 /** Removes the given network from the specified legacy type list. */ 492 public void remove(int type, NetworkAgentInfo nai) { 493 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 494 if (list == null || list.isEmpty()) { 495 return; 496 } 497 498 boolean wasFirstNetwork = list.get(0).equals(nai); 499 500 if (!list.remove(nai)) { 501 return; 502 } 503 504 if (wasFirstNetwork || isDefaultNetwork(nai)) { 505 maybeLogBroadcast(nai, false, type); 506 sendLegacyNetworkBroadcast(nai, false, type); 507 } 508 509 if (!list.isEmpty() && wasFirstNetwork) { 510 if (DBG) log("Other network available for type " + type + 511 ", sending connected broadcast"); 512 maybeLogBroadcast(list.get(0), false, type); 513 sendLegacyNetworkBroadcast(list.get(0), false, type); 514 } 515 } 516 517 /** Removes the given network from all legacy type lists. */ 518 public void remove(NetworkAgentInfo nai) { 519 if (VDBG) log("Removing agent " + nai); 520 for (int type = 0; type < mTypeLists.length; type++) { 521 remove(type, nai); 522 } 523 } 524 525 private String naiToString(NetworkAgentInfo nai) { 526 String name = (nai != null) ? nai.name() : "null"; 527 String state = (nai.networkInfo != null) ? 528 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 529 "???/???"; 530 return name + " " + state; 531 } 532 533 public void dump(IndentingPrintWriter pw) { 534 for (int type = 0; type < mTypeLists.length; type++) { 535 if (mTypeLists[type] == null) continue; 536 pw.print(type + " "); 537 pw.increaseIndent(); 538 if (mTypeLists[type].size() == 0) pw.println("none"); 539 for (NetworkAgentInfo nai : mTypeLists[type]) { 540 pw.println(naiToString(nai)); 541 } 542 pw.decreaseIndent(); 543 } 544 } 545 546 // This class needs its own log method because it has a different TAG. 547 private void log(String s) { 548 Slog.d(TAG, s); 549 } 550 551 } 552 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 553 554 public ConnectivityService(Context context, INetworkManagementService netManager, 555 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 556 if (DBG) log("ConnectivityService starting up"); 557 558 NetworkCapabilities netCap = new NetworkCapabilities(); 559 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 560 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 561 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 562 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 563 NetworkRequestInfo.REQUEST); 564 mNetworkRequests.put(mDefaultRequest, nri); 565 566 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 567 handlerThread.start(); 568 mHandler = new InternalHandler(handlerThread.getLooper()); 569 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 570 571 // setup our unique device name 572 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 573 String id = Settings.Secure.getString(context.getContentResolver(), 574 Settings.Secure.ANDROID_ID); 575 if (id != null && id.length() > 0) { 576 String name = new String("android-").concat(id); 577 SystemProperties.set("net.hostname", name); 578 } 579 } 580 581 // read our default dns server ip 582 String dns = Settings.Global.getString(context.getContentResolver(), 583 Settings.Global.DEFAULT_DNS_SERVER); 584 if (dns == null || dns.length() == 0) { 585 dns = context.getResources().getString( 586 com.android.internal.R.string.config_default_dns_server); 587 } 588 try { 589 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 590 } catch (IllegalArgumentException e) { 591 loge("Error setting defaultDns using " + dns); 592 } 593 594 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 595 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 596 597 mContext = checkNotNull(context, "missing Context"); 598 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 599 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 600 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 601 mKeyStore = KeyStore.getInstance(); 602 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 603 604 try { 605 mPolicyManager.registerListener(mPolicyListener); 606 } catch (RemoteException e) { 607 // ouch, no rules updates means some processes may never get network 608 loge("unable to register INetworkPolicyListener" + e.toString()); 609 } 610 611 final PowerManager powerManager = (PowerManager) context.getSystemService( 612 Context.POWER_SERVICE); 613 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 614 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 615 com.android.internal.R.integer.config_networkTransitionTimeout); 616 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 617 618 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 619 620 // TODO: What is the "correct" way to do determine if this is a wifi only device? 621 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 622 log("wifiOnly=" + wifiOnly); 623 String[] naStrings = context.getResources().getStringArray( 624 com.android.internal.R.array.networkAttributes); 625 for (String naString : naStrings) { 626 try { 627 NetworkConfig n = new NetworkConfig(naString); 628 if (VDBG) log("naString=" + naString + " config=" + n); 629 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 630 loge("Error in networkAttributes - ignoring attempt to define type " + 631 n.type); 632 continue; 633 } 634 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 635 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 636 n.type); 637 continue; 638 } 639 if (mNetConfigs[n.type] != null) { 640 loge("Error in networkAttributes - ignoring attempt to redefine type " + 641 n.type); 642 continue; 643 } 644 mLegacyTypeTracker.addSupportedType(n.type); 645 646 mNetConfigs[n.type] = n; 647 mNetworksDefined++; 648 } catch(Exception e) { 649 // ignore it - leave the entry null 650 } 651 } 652 653 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 654 if (mNetConfigs[TYPE_VPN] == null) { 655 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 656 // don't need to add TYPE_VPN to mNetConfigs. 657 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 658 mNetworksDefined++; // used only in the log() statement below. 659 } 660 661 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 662 663 mProtectedNetworks = new ArrayList<Integer>(); 664 int[] protectedNetworks = context.getResources().getIntArray( 665 com.android.internal.R.array.config_protectedNetworks); 666 for (int p : protectedNetworks) { 667 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 668 mProtectedNetworks.add(p); 669 } else { 670 if (DBG) loge("Ignoring protectedNetwork " + p); 671 } 672 } 673 674 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 675 && SystemProperties.get("ro.build.type").equals("eng"); 676 677 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 678 679 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 680 681 //set up the listener for user state for creating user VPNs 682 IntentFilter intentFilter = new IntentFilter(); 683 intentFilter.addAction(Intent.ACTION_USER_STARTING); 684 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 685 mContext.registerReceiverAsUser( 686 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 687 688 try { 689 mNetd.registerObserver(mTethering); 690 mNetd.registerObserver(mDataActivityObserver); 691 } catch (RemoteException e) { 692 loge("Error registering observer :" + e); 693 } 694 695 if (DBG) { 696 mInetLog = new ArrayList(); 697 } 698 699 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 700 mSettingsObserver.observe(mContext); 701 702 mDataConnectionStats = new DataConnectionStats(mContext); 703 mDataConnectionStats.startMonitoring(); 704 705 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 706 707 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 708 } 709 710 private synchronized int nextNetworkRequestId() { 711 return mNextNetworkRequestId++; 712 } 713 714 private int reserveNetId() { 715 synchronized (mNetworkForNetId) { 716 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 717 int netId = mNextNetId; 718 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 719 // Make sure NetID unused. http://b/16815182 720 if (!mNetIdInUse.get(netId)) { 721 mNetIdInUse.put(netId, true); 722 return netId; 723 } 724 } 725 } 726 throw new IllegalStateException("No free netIds"); 727 } 728 729 private NetworkState getFilteredNetworkState(int networkType, int uid) { 730 NetworkInfo info = null; 731 LinkProperties lp = null; 732 NetworkCapabilities nc = null; 733 Network network = null; 734 String subscriberId = null; 735 736 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 737 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 738 if (nai != null) { 739 synchronized (nai) { 740 info = new NetworkInfo(nai.networkInfo); 741 lp = new LinkProperties(nai.linkProperties); 742 nc = new NetworkCapabilities(nai.networkCapabilities); 743 // Network objects are outwardly immutable so there is no point to duplicating. 744 // Duplicating also precludes sharing socket factories and connection pools. 745 network = nai.network; 746 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 747 } 748 info.setType(networkType); 749 } else { 750 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 751 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 752 info.setIsAvailable(true); 753 lp = new LinkProperties(); 754 nc = new NetworkCapabilities(); 755 network = null; 756 } 757 info = getFilteredNetworkInfo(info, lp, uid); 758 } 759 760 return new NetworkState(info, lp, nc, network, subscriberId, null); 761 } 762 763 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 764 if (network == null) { 765 return null; 766 } 767 synchronized (mNetworkForNetId) { 768 return mNetworkForNetId.get(network.netId); 769 } 770 }; 771 772 private Network[] getVpnUnderlyingNetworks(int uid) { 773 if (!mLockdownEnabled) { 774 int user = UserHandle.getUserId(uid); 775 synchronized (mVpns) { 776 Vpn vpn = mVpns.get(user); 777 if (vpn != null && vpn.appliesToUid(uid)) { 778 return vpn.getUnderlyingNetworks(); 779 } 780 } 781 } 782 return null; 783 } 784 785 private NetworkState getUnfilteredActiveNetworkState(int uid) { 786 NetworkInfo info = null; 787 LinkProperties lp = null; 788 NetworkCapabilities nc = null; 789 Network network = null; 790 String subscriberId = null; 791 792 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 793 794 final Network[] networks = getVpnUnderlyingNetworks(uid); 795 if (networks != null) { 796 // getUnderlyingNetworks() returns: 797 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 798 // empty array => the VPN explicitly said "no default network". 799 // non-empty array => the VPN specified one or more default networks; we use the 800 // first one. 801 if (networks.length > 0) { 802 nai = getNetworkAgentInfoForNetwork(networks[0]); 803 } else { 804 nai = null; 805 } 806 } 807 808 if (nai != null) { 809 synchronized (nai) { 810 info = new NetworkInfo(nai.networkInfo); 811 lp = new LinkProperties(nai.linkProperties); 812 nc = new NetworkCapabilities(nai.networkCapabilities); 813 // Network objects are outwardly immutable so there is no point to duplicating. 814 // Duplicating also precludes sharing socket factories and connection pools. 815 network = nai.network; 816 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 817 } 818 } 819 820 return new NetworkState(info, lp, nc, network, subscriberId, null); 821 } 822 823 /** 824 * Check if UID should be blocked from using the network with the given LinkProperties. 825 */ 826 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 827 final boolean networkCostly; 828 final int uidRules; 829 830 final String iface = (lp == null ? "" : lp.getInterfaceName()); 831 synchronized (mRulesLock) { 832 networkCostly = mMeteredIfaces.contains(iface); 833 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 834 } 835 836 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 837 return true; 838 } 839 840 // no restrictive rules; network is visible 841 return false; 842 } 843 844 /** 845 * Return a filtered {@link NetworkInfo}, potentially marked 846 * {@link DetailedState#BLOCKED} based on 847 * {@link #isNetworkWithLinkPropertiesBlocked}. 848 */ 849 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 850 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 851 // network is blocked; clone and override state 852 info = new NetworkInfo(info); 853 info.setDetailedState(DetailedState.BLOCKED, null, null); 854 if (DBG) { 855 log("returning Blocked NetworkInfo for ifname=" + 856 lp.getInterfaceName() + ", uid=" + uid); 857 } 858 } 859 if (info != null && mLockdownTracker != null) { 860 info = mLockdownTracker.augmentNetworkInfo(info); 861 if (DBG) log("returning Locked NetworkInfo"); 862 } 863 return info; 864 } 865 866 /** 867 * Return NetworkInfo for the active (i.e., connected) network interface. 868 * It is assumed that at most one network is active at a time. If more 869 * than one is active, it is indeterminate which will be returned. 870 * @return the info for the active network, or {@code null} if none is 871 * active 872 */ 873 @Override 874 public NetworkInfo getActiveNetworkInfo() { 875 enforceAccessPermission(); 876 final int uid = Binder.getCallingUid(); 877 NetworkState state = getUnfilteredActiveNetworkState(uid); 878 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 879 } 880 881 @Override 882 public Network getActiveNetwork() { 883 enforceAccessPermission(); 884 final int uid = Binder.getCallingUid(); 885 final int user = UserHandle.getUserId(uid); 886 int vpnNetId = NETID_UNSET; 887 synchronized (mVpns) { 888 final Vpn vpn = mVpns.get(user); 889 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 890 } 891 NetworkAgentInfo nai; 892 if (vpnNetId != NETID_UNSET) { 893 synchronized (mNetworkForNetId) { 894 nai = mNetworkForNetId.get(vpnNetId); 895 } 896 if (nai != null) return nai.network; 897 } 898 nai = getDefaultNetwork(); 899 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 900 return nai != null ? nai.network : null; 901 } 902 903 /** 904 * Find the first Provisioning network. 905 * 906 * @return NetworkInfo or null if none. 907 */ 908 private NetworkInfo getProvisioningNetworkInfo() { 909 enforceAccessPermission(); 910 911 // Find the first Provisioning Network 912 NetworkInfo provNi = null; 913 for (NetworkInfo ni : getAllNetworkInfo()) { 914 if (ni.isConnectedToProvisioningNetwork()) { 915 provNi = ni; 916 break; 917 } 918 } 919 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 920 return provNi; 921 } 922 923 /** 924 * Find the first Provisioning network or the ActiveDefaultNetwork 925 * if there is no Provisioning network 926 * 927 * @return NetworkInfo or null if none. 928 */ 929 @Override 930 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 931 enforceAccessPermission(); 932 933 NetworkInfo provNi = getProvisioningNetworkInfo(); 934 if (provNi == null) { 935 provNi = getActiveNetworkInfo(); 936 } 937 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 938 return provNi; 939 } 940 941 public NetworkInfo getActiveNetworkInfoUnfiltered() { 942 enforceAccessPermission(); 943 final int uid = Binder.getCallingUid(); 944 NetworkState state = getUnfilteredActiveNetworkState(uid); 945 return state.networkInfo; 946 } 947 948 @Override 949 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 950 enforceConnectivityInternalPermission(); 951 NetworkState state = getUnfilteredActiveNetworkState(uid); 952 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 953 } 954 955 @Override 956 public NetworkInfo getNetworkInfo(int networkType) { 957 enforceAccessPermission(); 958 final int uid = Binder.getCallingUid(); 959 if (getVpnUnderlyingNetworks(uid) != null) { 960 // A VPN is active, so we may need to return one of its underlying networks. This 961 // information is not available in LegacyTypeTracker, so we have to get it from 962 // getUnfilteredActiveNetworkState. 963 NetworkState state = getUnfilteredActiveNetworkState(uid); 964 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 965 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 966 } 967 } 968 NetworkState state = getFilteredNetworkState(networkType, uid); 969 return state.networkInfo; 970 } 971 972 @Override 973 public NetworkInfo getNetworkInfoForNetwork(Network network) { 974 enforceAccessPermission(); 975 final int uid = Binder.getCallingUid(); 976 NetworkInfo info = null; 977 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 978 if (nai != null) { 979 synchronized (nai) { 980 info = new NetworkInfo(nai.networkInfo); 981 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 982 } 983 } 984 return info; 985 } 986 987 @Override 988 public NetworkInfo[] getAllNetworkInfo() { 989 enforceAccessPermission(); 990 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 991 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 992 networkType++) { 993 NetworkInfo info = getNetworkInfo(networkType); 994 if (info != null) { 995 result.add(info); 996 } 997 } 998 return result.toArray(new NetworkInfo[result.size()]); 999 } 1000 1001 @Override 1002 public Network getNetworkForType(int networkType) { 1003 enforceAccessPermission(); 1004 final int uid = Binder.getCallingUid(); 1005 NetworkState state = getFilteredNetworkState(networkType, uid); 1006 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1007 return state.network; 1008 } 1009 return null; 1010 } 1011 1012 @Override 1013 public Network[] getAllNetworks() { 1014 enforceAccessPermission(); 1015 synchronized (mNetworkForNetId) { 1016 final Network[] result = new Network[mNetworkForNetId.size()]; 1017 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1018 result[i] = mNetworkForNetId.valueAt(i).network; 1019 } 1020 return result; 1021 } 1022 } 1023 1024 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 1025 if (nai != null) { 1026 synchronized (nai) { 1027 if (nai.created) { 1028 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1029 if (nai.lastValidated) { 1030 nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1031 } else { 1032 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1033 } 1034 return nc; 1035 } 1036 } 1037 } 1038 return null; 1039 } 1040 1041 @Override 1042 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1043 // The basic principle is: if an app's traffic could possibly go over a 1044 // network, without the app doing anything multinetwork-specific, 1045 // (hence, by "default"), then include that network's capabilities in 1046 // the array. 1047 // 1048 // In the normal case, app traffic only goes over the system's default 1049 // network connection, so that's the only network returned. 1050 // 1051 // With a VPN in force, some app traffic may go into the VPN, and thus 1052 // over whatever underlying networks the VPN specifies, while other app 1053 // traffic may go over the system default network (e.g.: a split-tunnel 1054 // VPN, or an app disallowed by the VPN), so the set of networks 1055 // returned includes the VPN's underlying networks and the system 1056 // default. 1057 enforceAccessPermission(); 1058 1059 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1060 1061 NetworkAgentInfo nai = getDefaultNetwork(); 1062 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1063 if (nc != null) { 1064 result.put(nai.network, nc); 1065 } 1066 1067 if (!mLockdownEnabled) { 1068 synchronized (mVpns) { 1069 Vpn vpn = mVpns.get(userId); 1070 if (vpn != null) { 1071 Network[] networks = vpn.getUnderlyingNetworks(); 1072 if (networks != null) { 1073 for (Network network : networks) { 1074 nai = getNetworkAgentInfoForNetwork(network); 1075 nc = getNetworkCapabilitiesAndValidation(nai); 1076 if (nc != null) { 1077 result.put(nai.network, nc); 1078 } 1079 } 1080 } 1081 } 1082 } 1083 } 1084 1085 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1086 out = result.values().toArray(out); 1087 return out; 1088 } 1089 1090 @Override 1091 public boolean isNetworkSupported(int networkType) { 1092 enforceAccessPermission(); 1093 return mLegacyTypeTracker.isTypeSupported(networkType); 1094 } 1095 1096 /** 1097 * Return LinkProperties for the active (i.e., connected) default 1098 * network interface. It is assumed that at most one default network 1099 * is active at a time. If more than one is active, it is indeterminate 1100 * which will be returned. 1101 * @return the ip properties for the active network, or {@code null} if 1102 * none is active 1103 */ 1104 @Override 1105 public LinkProperties getActiveLinkProperties() { 1106 enforceAccessPermission(); 1107 final int uid = Binder.getCallingUid(); 1108 NetworkState state = getUnfilteredActiveNetworkState(uid); 1109 return state.linkProperties; 1110 } 1111 1112 @Override 1113 public LinkProperties getLinkPropertiesForType(int networkType) { 1114 enforceAccessPermission(); 1115 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1116 if (nai != null) { 1117 synchronized (nai) { 1118 return new LinkProperties(nai.linkProperties); 1119 } 1120 } 1121 return null; 1122 } 1123 1124 // TODO - this should be ALL networks 1125 @Override 1126 public LinkProperties getLinkProperties(Network network) { 1127 enforceAccessPermission(); 1128 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1129 if (nai != null) { 1130 synchronized (nai) { 1131 return new LinkProperties(nai.linkProperties); 1132 } 1133 } 1134 return null; 1135 } 1136 1137 @Override 1138 public NetworkCapabilities getNetworkCapabilities(Network network) { 1139 enforceAccessPermission(); 1140 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1141 if (nai != null) { 1142 synchronized (nai) { 1143 return new NetworkCapabilities(nai.networkCapabilities); 1144 } 1145 } 1146 return null; 1147 } 1148 1149 @Override 1150 public NetworkState[] getAllNetworkState() { 1151 // Require internal since we're handing out IMSI details 1152 enforceConnectivityInternalPermission(); 1153 1154 final ArrayList<NetworkState> result = Lists.newArrayList(); 1155 for (Network network : getAllNetworks()) { 1156 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1157 if (nai != null) { 1158 synchronized (nai) { 1159 final String subscriberId = (nai.networkMisc != null) 1160 ? nai.networkMisc.subscriberId : null; 1161 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1162 nai.networkCapabilities, network, subscriberId, null)); 1163 } 1164 } 1165 } 1166 return result.toArray(new NetworkState[result.size()]); 1167 } 1168 1169 @Override 1170 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1171 enforceAccessPermission(); 1172 final int uid = Binder.getCallingUid(); 1173 final long token = Binder.clearCallingIdentity(); 1174 try { 1175 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1176 if (state.networkInfo != null) { 1177 try { 1178 return mPolicyManager.getNetworkQuotaInfo(state); 1179 } catch (RemoteException e) { 1180 } 1181 } 1182 return null; 1183 } finally { 1184 Binder.restoreCallingIdentity(token); 1185 } 1186 } 1187 1188 @Override 1189 public boolean isActiveNetworkMetered() { 1190 enforceAccessPermission(); 1191 final int uid = Binder.getCallingUid(); 1192 final long token = Binder.clearCallingIdentity(); 1193 try { 1194 return isActiveNetworkMeteredUnchecked(uid); 1195 } finally { 1196 Binder.restoreCallingIdentity(token); 1197 } 1198 } 1199 1200 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1201 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1202 if (state.networkInfo != null) { 1203 try { 1204 return mPolicyManager.isNetworkMetered(state); 1205 } catch (RemoteException e) { 1206 } 1207 } 1208 return false; 1209 } 1210 1211 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1212 @Override 1213 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1214 int deviceType = Integer.parseInt(label); 1215 sendDataActivityBroadcast(deviceType, active, tsNanos); 1216 } 1217 }; 1218 1219 /** 1220 * Ensure that a network route exists to deliver traffic to the specified 1221 * host via the specified network interface. 1222 * @param networkType the type of the network over which traffic to the 1223 * specified host is to be routed 1224 * @param hostAddress the IP address of the host to which the route is 1225 * desired 1226 * @return {@code true} on success, {@code false} on failure 1227 */ 1228 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1229 enforceChangePermission(); 1230 if (mProtectedNetworks.contains(networkType)) { 1231 enforceConnectivityInternalPermission(); 1232 } 1233 1234 InetAddress addr; 1235 try { 1236 addr = InetAddress.getByAddress(hostAddress); 1237 } catch (UnknownHostException e) { 1238 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1239 return false; 1240 } 1241 1242 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1243 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1244 return false; 1245 } 1246 1247 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1248 if (nai == null) { 1249 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1250 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1251 } else { 1252 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1253 } 1254 return false; 1255 } 1256 1257 DetailedState netState; 1258 synchronized (nai) { 1259 netState = nai.networkInfo.getDetailedState(); 1260 } 1261 1262 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1263 if (VDBG) { 1264 log("requestRouteToHostAddress on down network " 1265 + "(" + networkType + ") - dropped" 1266 + " netState=" + netState); 1267 } 1268 return false; 1269 } 1270 1271 final int uid = Binder.getCallingUid(); 1272 final long token = Binder.clearCallingIdentity(); 1273 try { 1274 LinkProperties lp; 1275 int netId; 1276 synchronized (nai) { 1277 lp = nai.linkProperties; 1278 netId = nai.network.netId; 1279 } 1280 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1281 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1282 return ok; 1283 } finally { 1284 Binder.restoreCallingIdentity(token); 1285 } 1286 } 1287 1288 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1289 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1290 if (bestRoute == null) { 1291 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1292 } else { 1293 String iface = bestRoute.getInterface(); 1294 if (bestRoute.getGateway().equals(addr)) { 1295 // if there is no better route, add the implied hostroute for our gateway 1296 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1297 } else { 1298 // if we will connect to this through another route, add a direct route 1299 // to it's gateway 1300 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1301 } 1302 } 1303 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1304 try { 1305 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1306 } catch (Exception e) { 1307 // never crash - catch them all 1308 if (DBG) loge("Exception trying to add a route: " + e); 1309 return false; 1310 } 1311 return true; 1312 } 1313 1314 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1315 @Override 1316 public void onUidRulesChanged(int uid, int uidRules) { 1317 // caller is NPMS, since we only register with them 1318 if (LOGD_RULES) { 1319 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1320 } 1321 1322 synchronized (mRulesLock) { 1323 // skip update when we've already applied rules 1324 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1325 if (oldRules == uidRules) return; 1326 1327 mUidRules.put(uid, uidRules); 1328 } 1329 1330 // TODO: notify UID when it has requested targeted updates 1331 } 1332 1333 @Override 1334 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1335 // caller is NPMS, since we only register with them 1336 if (LOGD_RULES) { 1337 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1338 } 1339 1340 synchronized (mRulesLock) { 1341 mMeteredIfaces.clear(); 1342 for (String iface : meteredIfaces) { 1343 mMeteredIfaces.add(iface); 1344 } 1345 } 1346 } 1347 1348 @Override 1349 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1350 // caller is NPMS, since we only register with them 1351 if (LOGD_RULES) { 1352 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1353 } 1354 } 1355 }; 1356 1357 private void enforceInternetPermission() { 1358 mContext.enforceCallingOrSelfPermission( 1359 android.Manifest.permission.INTERNET, 1360 "ConnectivityService"); 1361 } 1362 1363 private void enforceAccessPermission() { 1364 mContext.enforceCallingOrSelfPermission( 1365 android.Manifest.permission.ACCESS_NETWORK_STATE, 1366 "ConnectivityService"); 1367 } 1368 1369 private void enforceChangePermission() { 1370 mContext.enforceCallingOrSelfPermission( 1371 android.Manifest.permission.CHANGE_NETWORK_STATE, 1372 "ConnectivityService"); 1373 } 1374 1375 private void enforceTetherAccessPermission() { 1376 mContext.enforceCallingOrSelfPermission( 1377 android.Manifest.permission.ACCESS_NETWORK_STATE, 1378 "ConnectivityService"); 1379 } 1380 1381 private void enforceConnectivityInternalPermission() { 1382 mContext.enforceCallingOrSelfPermission( 1383 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1384 "ConnectivityService"); 1385 } 1386 1387 public void sendConnectedBroadcast(NetworkInfo info) { 1388 enforceConnectivityInternalPermission(); 1389 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1390 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1391 } 1392 1393 private void sendInetConditionBroadcast(NetworkInfo info) { 1394 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1395 } 1396 1397 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1398 if (mLockdownTracker != null) { 1399 info = mLockdownTracker.augmentNetworkInfo(info); 1400 } 1401 1402 Intent intent = new Intent(bcastType); 1403 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1404 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1405 if (info.isFailover()) { 1406 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1407 info.setFailover(false); 1408 } 1409 if (info.getReason() != null) { 1410 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1411 } 1412 if (info.getExtraInfo() != null) { 1413 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1414 info.getExtraInfo()); 1415 } 1416 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1417 return intent; 1418 } 1419 1420 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1421 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1422 } 1423 1424 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1425 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1426 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1427 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1428 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1429 final long ident = Binder.clearCallingIdentity(); 1430 try { 1431 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1432 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1433 } finally { 1434 Binder.restoreCallingIdentity(ident); 1435 } 1436 } 1437 1438 private void sendStickyBroadcast(Intent intent) { 1439 synchronized(this) { 1440 if (!mSystemReady) { 1441 mInitialBroadcast = new Intent(intent); 1442 } 1443 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1444 if (DBG) { 1445 log("sendStickyBroadcast: action=" + intent.getAction()); 1446 } 1447 1448 final long ident = Binder.clearCallingIdentity(); 1449 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1450 final IBatteryStats bs = BatteryStatsService.getService(); 1451 try { 1452 NetworkInfo ni = intent.getParcelableExtra( 1453 ConnectivityManager.EXTRA_NETWORK_INFO); 1454 bs.noteConnectivityChanged(intent.getIntExtra( 1455 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1456 ni != null ? ni.getState().toString() : "?"); 1457 } catch (RemoteException e) { 1458 } 1459 } 1460 try { 1461 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1462 } finally { 1463 Binder.restoreCallingIdentity(ident); 1464 } 1465 } 1466 } 1467 1468 void systemReady() { 1469 loadGlobalProxy(); 1470 1471 synchronized(this) { 1472 mSystemReady = true; 1473 if (mInitialBroadcast != null) { 1474 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1475 mInitialBroadcast = null; 1476 } 1477 } 1478 // load the global proxy at startup 1479 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1480 1481 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1482 // for user to unlock device. 1483 if (!updateLockdownVpn()) { 1484 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1485 mContext.registerReceiver(mUserPresentReceiver, filter); 1486 } 1487 1488 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1489 1490 mPermissionMonitor.startMonitoring(); 1491 } 1492 1493 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1494 @Override 1495 public void onReceive(Context context, Intent intent) { 1496 // Try creating lockdown tracker, since user present usually means 1497 // unlocked keystore. 1498 if (updateLockdownVpn()) { 1499 mContext.unregisterReceiver(this); 1500 } 1501 } 1502 }; 1503 1504 /** @hide */ 1505 @Override 1506 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1507 enforceConnectivityInternalPermission(); 1508 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1509// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1510 } 1511 1512 /** 1513 * Setup data activity tracking for the given network. 1514 * 1515 * Every {@code setupDataActivityTracking} should be paired with a 1516 * {@link #removeDataActivityTracking} for cleanup. 1517 */ 1518 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1519 final String iface = networkAgent.linkProperties.getInterfaceName(); 1520 1521 final int timeout; 1522 int type = ConnectivityManager.TYPE_NONE; 1523 1524 if (networkAgent.networkCapabilities.hasTransport( 1525 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1526 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1527 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1528 5); 1529 type = ConnectivityManager.TYPE_MOBILE; 1530 } else if (networkAgent.networkCapabilities.hasTransport( 1531 NetworkCapabilities.TRANSPORT_WIFI)) { 1532 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1533 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1534 5); 1535 type = ConnectivityManager.TYPE_WIFI; 1536 } else { 1537 // do not track any other networks 1538 timeout = 0; 1539 } 1540 1541 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1542 try { 1543 mNetd.addIdleTimer(iface, timeout, type); 1544 } catch (Exception e) { 1545 // You shall not crash! 1546 loge("Exception in setupDataActivityTracking " + e); 1547 } 1548 } 1549 } 1550 1551 /** 1552 * Remove data activity tracking when network disconnects. 1553 */ 1554 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1555 final String iface = networkAgent.linkProperties.getInterfaceName(); 1556 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1557 1558 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1559 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1560 try { 1561 // the call fails silently if no idletimer setup for this interface 1562 mNetd.removeIdleTimer(iface); 1563 } catch (Exception e) { 1564 loge("Exception in removeDataActivityTracking " + e); 1565 } 1566 } 1567 } 1568 1569 /** 1570 * Reads the network specific MTU size from reources. 1571 * and set it on it's iface. 1572 */ 1573 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1574 final String iface = newLp.getInterfaceName(); 1575 final int mtu = newLp.getMtu(); 1576 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1577 if (VDBG) log("identical MTU - not setting"); 1578 return; 1579 } 1580 1581 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1582 loge("Unexpected mtu value: " + mtu + ", " + iface); 1583 return; 1584 } 1585 1586 // Cannot set MTU without interface name 1587 if (TextUtils.isEmpty(iface)) { 1588 loge("Setting MTU size with null iface."); 1589 return; 1590 } 1591 1592 try { 1593 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1594 mNetd.setMtu(iface, mtu); 1595 } catch (Exception e) { 1596 Slog.e(TAG, "exception in setMtu()" + e); 1597 } 1598 } 1599 1600 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1601 1602 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1603 if (isDefaultNetwork(nai) == false) { 1604 return; 1605 } 1606 1607 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1608 String[] values = null; 1609 if (tcpBufferSizes != null) { 1610 values = tcpBufferSizes.split(","); 1611 } 1612 1613 if (values == null || values.length != 6) { 1614 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1615 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1616 values = tcpBufferSizes.split(","); 1617 } 1618 1619 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1620 1621 try { 1622 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1623 1624 final String prefix = "/sys/kernel/ipv4/tcp_"; 1625 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1626 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1627 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1628 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1629 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1630 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1631 mCurrentTcpBufferSizes = tcpBufferSizes; 1632 } catch (IOException e) { 1633 loge("Can't set TCP buffer sizes:" + e); 1634 } 1635 1636 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1637 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1638 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1639 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1640 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1641 if (rwndValue != 0) { 1642 SystemProperties.set(sysctlKey, rwndValue.toString()); 1643 } 1644 } 1645 1646 private void flushVmDnsCache() { 1647 /* 1648 * Tell the VMs to toss their DNS caches 1649 */ 1650 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1651 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1652 /* 1653 * Connectivity events can happen before boot has completed ... 1654 */ 1655 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1656 final long ident = Binder.clearCallingIdentity(); 1657 try { 1658 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1659 } finally { 1660 Binder.restoreCallingIdentity(ident); 1661 } 1662 } 1663 1664 @Override 1665 public int getRestoreDefaultNetworkDelay(int networkType) { 1666 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1667 NETWORK_RESTORE_DELAY_PROP_NAME); 1668 if(restoreDefaultNetworkDelayStr != null && 1669 restoreDefaultNetworkDelayStr.length() != 0) { 1670 try { 1671 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1672 } catch (NumberFormatException e) { 1673 } 1674 } 1675 // if the system property isn't set, use the value for the apn type 1676 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1677 1678 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1679 (mNetConfigs[networkType] != null)) { 1680 ret = mNetConfigs[networkType].restoreTime; 1681 } 1682 return ret; 1683 } 1684 1685 @Override 1686 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1687 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1688 if (mContext.checkCallingOrSelfPermission( 1689 android.Manifest.permission.DUMP) 1690 != PackageManager.PERMISSION_GRANTED) { 1691 pw.println("Permission Denial: can't dump ConnectivityService " + 1692 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1693 Binder.getCallingUid()); 1694 return; 1695 } 1696 1697 pw.println("NetworkFactories for:"); 1698 pw.increaseIndent(); 1699 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1700 pw.println(nfi.name); 1701 } 1702 pw.decreaseIndent(); 1703 pw.println(); 1704 1705 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1706 pw.print("Active default network: "); 1707 if (defaultNai == null) { 1708 pw.println("none"); 1709 } else { 1710 pw.println(defaultNai.network.netId); 1711 } 1712 pw.println(); 1713 1714 pw.println("Current Networks:"); 1715 pw.increaseIndent(); 1716 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1717 pw.println(nai.toString()); 1718 pw.increaseIndent(); 1719 pw.println("Requests:"); 1720 pw.increaseIndent(); 1721 for (int i = 0; i < nai.networkRequests.size(); i++) { 1722 pw.println(nai.networkRequests.valueAt(i).toString()); 1723 } 1724 pw.decreaseIndent(); 1725 pw.println("Lingered:"); 1726 pw.increaseIndent(); 1727 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1728 pw.decreaseIndent(); 1729 pw.decreaseIndent(); 1730 } 1731 pw.decreaseIndent(); 1732 pw.println(); 1733 1734 pw.println("Network Requests:"); 1735 pw.increaseIndent(); 1736 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1737 pw.println(nri.toString()); 1738 } 1739 pw.println(); 1740 pw.decreaseIndent(); 1741 1742 pw.println("mLegacyTypeTracker:"); 1743 pw.increaseIndent(); 1744 mLegacyTypeTracker.dump(pw); 1745 pw.decreaseIndent(); 1746 pw.println(); 1747 1748 synchronized (this) { 1749 pw.println("NetworkTransitionWakeLock is currently " + 1750 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1751 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1752 } 1753 pw.println(); 1754 1755 mTethering.dump(fd, pw, args); 1756 1757 if (mInetLog != null) { 1758 pw.println(); 1759 pw.println("Inet condition reports:"); 1760 pw.increaseIndent(); 1761 for(int i = 0; i < mInetLog.size(); i++) { 1762 pw.println(mInetLog.get(i)); 1763 } 1764 pw.decreaseIndent(); 1765 } 1766 } 1767 1768 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1769 if (nai.network == null) return false; 1770 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1771 if (officialNai != null && officialNai.equals(nai)) return true; 1772 if (officialNai != null || VDBG) { 1773 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1774 " - " + nai); 1775 } 1776 return false; 1777 } 1778 1779 private boolean isRequest(NetworkRequest request) { 1780 return mNetworkRequests.get(request).isRequest; 1781 } 1782 1783 // must be stateless - things change under us. 1784 private class NetworkStateTrackerHandler extends Handler { 1785 public NetworkStateTrackerHandler(Looper looper) { 1786 super(looper); 1787 } 1788 1789 @Override 1790 public void handleMessage(Message msg) { 1791 NetworkInfo info; 1792 switch (msg.what) { 1793 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1794 handleAsyncChannelHalfConnect(msg); 1795 break; 1796 } 1797 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1798 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1799 if (nai != null) nai.asyncChannel.disconnect(); 1800 break; 1801 } 1802 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1803 handleAsyncChannelDisconnected(msg); 1804 break; 1805 } 1806 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1807 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1808 if (nai == null) { 1809 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1810 } else { 1811 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1812 } 1813 break; 1814 } 1815 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1816 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1817 if (nai == null) { 1818 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1819 } else { 1820 if (VDBG) { 1821 log("Update of LinkProperties for " + nai.name() + 1822 "; created=" + nai.created); 1823 } 1824 LinkProperties oldLp = nai.linkProperties; 1825 synchronized (nai) { 1826 nai.linkProperties = (LinkProperties)msg.obj; 1827 } 1828 if (nai.created) updateLinkProperties(nai, oldLp); 1829 } 1830 break; 1831 } 1832 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1833 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1834 if (nai == null) { 1835 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1836 break; 1837 } 1838 info = (NetworkInfo) msg.obj; 1839 updateNetworkInfo(nai, info); 1840 break; 1841 } 1842 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1843 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1844 if (nai == null) { 1845 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1846 break; 1847 } 1848 Integer score = (Integer) msg.obj; 1849 if (score != null) updateNetworkScore(nai, score.intValue()); 1850 break; 1851 } 1852 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1853 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1854 if (nai == null) { 1855 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1856 break; 1857 } 1858 try { 1859 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1860 } catch (Exception e) { 1861 // Never crash! 1862 loge("Exception in addVpnUidRanges: " + e); 1863 } 1864 break; 1865 } 1866 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1867 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1868 if (nai == null) { 1869 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1870 break; 1871 } 1872 try { 1873 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1874 } catch (Exception e) { 1875 // Never crash! 1876 loge("Exception in removeVpnUidRanges: " + e); 1877 } 1878 break; 1879 } 1880 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1881 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1882 if (nai == null) { 1883 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1884 break; 1885 } 1886 if (nai.created && !nai.networkMisc.explicitlySelected) { 1887 loge("ERROR: created network explicitly selected."); 1888 } 1889 nai.networkMisc.explicitlySelected = true; 1890 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1891 break; 1892 } 1893 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1894 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1895 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1896 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1897 nai.lastValidated = valid; 1898 if (valid) { 1899 if (DBG) log("Validated " + nai.name()); 1900 if (!nai.everValidated) { 1901 nai.everValidated = true; 1902 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1903 ReapUnvalidatedNetworks.REAP); 1904 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1905 sendUpdatedScoreToFactories(nai); 1906 } 1907 } 1908 updateInetCondition(nai); 1909 // Let the NetworkAgent know the state of its network 1910 nai.asyncChannel.sendMessage( 1911 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1912 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1913 0, null); 1914 1915 // TODO: trigger a NetworkCapabilities update so that the dialog can know 1916 // that the network is now validated and close itself. 1917 } 1918 break; 1919 } 1920 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1921 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1922 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1923 handleLingerComplete(nai); 1924 } 1925 break; 1926 } 1927 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1928 if (msg.arg1 == 0) { 1929 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1930 } else { 1931 NetworkAgentInfo nai = null; 1932 synchronized (mNetworkForNetId) { 1933 nai = mNetworkForNetId.get(msg.arg2); 1934 } 1935 if (nai == null) { 1936 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1937 break; 1938 } 1939 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1940 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1941 } 1942 break; 1943 } 1944 } 1945 } 1946 } 1947 1948 // Cancel any lingering so the linger timeout doesn't teardown a network. 1949 // This should be called when a network begins satisfying a NetworkRequest. 1950 // Note: depending on what state the NetworkMonitor is in (e.g., 1951 // if it's awaiting captive portal login, or if validation failed), this 1952 // may trigger a re-evaluation of the network. 1953 private void unlinger(NetworkAgentInfo nai) { 1954 if (VDBG) log("Canceling linger of " + nai.name()); 1955 // If network has never been validated, it cannot have been lingered, so don't bother 1956 // needlessly triggering a re-evaluation. 1957 if (!nai.everValidated) return; 1958 nai.networkLingered.clear(); 1959 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 1960 } 1961 1962 private void handleAsyncChannelHalfConnect(Message msg) { 1963 AsyncChannel ac = (AsyncChannel) msg.obj; 1964 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 1965 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 1966 if (VDBG) log("NetworkFactory connected"); 1967 // A network factory has connected. Send it all current NetworkRequests. 1968 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1969 if (nri.isRequest == false) continue; 1970 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 1971 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 1972 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 1973 } 1974 } else { 1975 loge("Error connecting NetworkFactory"); 1976 mNetworkFactoryInfos.remove(msg.obj); 1977 } 1978 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 1979 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 1980 if (VDBG) log("NetworkAgent connected"); 1981 // A network agent has requested a connection. Establish the connection. 1982 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 1983 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 1984 } else { 1985 loge("Error connecting NetworkAgent"); 1986 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 1987 if (nai != null) { 1988 synchronized (mNetworkForNetId) { 1989 mNetworkForNetId.remove(nai.network.netId); 1990 mNetIdInUse.delete(nai.network.netId); 1991 } 1992 // Just in case. 1993 mLegacyTypeTracker.remove(nai); 1994 } 1995 } 1996 } 1997 } 1998 1999 private void handleAsyncChannelDisconnected(Message msg) { 2000 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2001 if (nai != null) { 2002 if (DBG) { 2003 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2004 } 2005 // A network agent has disconnected. 2006 if (nai.created) { 2007 // Tell netd to clean up the configuration for this network 2008 // (routing rules, DNS, etc). 2009 try { 2010 mNetd.removeNetwork(nai.network.netId); 2011 } catch (Exception e) { 2012 loge("Exception removing network: " + e); 2013 } 2014 } 2015 // TODO - if we move the logic to the network agent (have them disconnect 2016 // because they lost all their requests or because their score isn't good) 2017 // then they would disconnect organically, report their new state and then 2018 // disconnect the channel. 2019 if (nai.networkInfo.isConnected()) { 2020 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2021 null, null); 2022 } 2023 if (isDefaultNetwork(nai)) { 2024 mDefaultInetConditionPublished = 0; 2025 } 2026 notifyIfacesChanged(); 2027 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2028 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2029 mNetworkAgentInfos.remove(msg.replyTo); 2030 updateClat(null, nai.linkProperties, nai); 2031 mLegacyTypeTracker.remove(nai); 2032 synchronized (mNetworkForNetId) { 2033 mNetworkForNetId.remove(nai.network.netId); 2034 mNetIdInUse.delete(nai.network.netId); 2035 } 2036 // Since we've lost the network, go through all the requests that 2037 // it was satisfying and see if any other factory can satisfy them. 2038 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2039 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2040 for (int i = 0; i < nai.networkRequests.size(); i++) { 2041 NetworkRequest request = nai.networkRequests.valueAt(i); 2042 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2043 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2044 if (DBG) { 2045 log("Checking for replacement network to handle request " + request ); 2046 } 2047 mNetworkForRequestId.remove(request.requestId); 2048 sendUpdatedScoreToFactories(request, 0); 2049 NetworkAgentInfo alternative = null; 2050 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2051 if (existing.satisfies(request) && 2052 (alternative == null || 2053 alternative.getCurrentScore() < existing.getCurrentScore())) { 2054 alternative = existing; 2055 } 2056 } 2057 if (alternative != null) { 2058 if (DBG) log(" found replacement in " + alternative.name()); 2059 if (!toActivate.contains(alternative)) { 2060 toActivate.add(alternative); 2061 } 2062 } 2063 } 2064 } 2065 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2066 removeDataActivityTracking(nai); 2067 notifyLockdownVpn(nai); 2068 requestNetworkTransitionWakelock(nai.name()); 2069 } 2070 for (NetworkAgentInfo networkToActivate : toActivate) { 2071 unlinger(networkToActivate); 2072 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2073 ReapUnvalidatedNetworks.DONT_REAP); 2074 } 2075 } 2076 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2077 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2078 } 2079 2080 // If this method proves to be too slow then we can maintain a separate 2081 // pendingIntent => NetworkRequestInfo map. 2082 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2083 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2084 Intent intent = pendingIntent.getIntent(); 2085 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2086 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2087 if (existingPendingIntent != null && 2088 existingPendingIntent.getIntent().filterEquals(intent)) { 2089 return entry.getValue(); 2090 } 2091 } 2092 return null; 2093 } 2094 2095 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2096 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2097 2098 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2099 if (existingRequest != null) { // remove the existing request. 2100 if (DBG) log("Replacing " + existingRequest.request + " with " 2101 + nri.request + " because their intents matched."); 2102 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2103 } 2104 handleRegisterNetworkRequest(msg); 2105 } 2106 2107 private void handleRegisterNetworkRequest(Message msg) { 2108 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2109 2110 mNetworkRequests.put(nri.request, nri); 2111 2112 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2113 2114 // Check for the best currently alive network that satisfies this request 2115 NetworkAgentInfo bestNetwork = null; 2116 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2117 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2118 if (network.satisfies(nri.request)) { 2119 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2120 if (!nri.isRequest) { 2121 // Not setting bestNetwork here as a listening NetworkRequest may be 2122 // satisfied by multiple Networks. Instead the request is added to 2123 // each satisfying Network and notified about each. 2124 network.addRequest(nri.request); 2125 notifyNetworkCallback(network, nri); 2126 } else if (bestNetwork == null || 2127 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2128 bestNetwork = network; 2129 } 2130 } 2131 } 2132 if (bestNetwork != null) { 2133 if (DBG) log("using " + bestNetwork.name()); 2134 unlinger(bestNetwork); 2135 bestNetwork.addRequest(nri.request); 2136 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2137 notifyNetworkCallback(bestNetwork, nri); 2138 if (nri.request.legacyType != TYPE_NONE) { 2139 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2140 } 2141 } 2142 2143 if (nri.isRequest) { 2144 if (DBG) log("sending new NetworkRequest to factories"); 2145 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2146 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2147 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2148 0, nri.request); 2149 } 2150 } 2151 } 2152 2153 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2154 int callingUid) { 2155 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2156 if (nri != null) { 2157 handleReleaseNetworkRequest(nri.request, callingUid); 2158 } 2159 } 2160 2161 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2162 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2163 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2164 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2165 private boolean unneeded(NetworkAgentInfo nai) { 2166 if (!nai.created || nai.isVPN()) return false; 2167 boolean unneeded = true; 2168 if (nai.everValidated) { 2169 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2170 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2171 try { 2172 if (isRequest(nr)) unneeded = false; 2173 } catch (Exception e) { 2174 loge("Request " + nr + " not found in mNetworkRequests."); 2175 loge(" it came from request list of " + nai.name()); 2176 } 2177 } 2178 } else { 2179 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2180 // If this Network is already the highest scoring Network for a request, or if 2181 // there is hope for it to become one if it validated, then it is needed. 2182 if (nri.isRequest && nai.satisfies(nri.request) && 2183 (nai.networkRequests.get(nri.request.requestId) != null || 2184 // Note that this catches two important cases: 2185 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2186 // is currently satisfying the request. This is desirable when 2187 // cellular ends up validating but WiFi does not. 2188 // 2. Unvalidated WiFi will not be reaped when validated cellular 2189 // is currently satsifying the request. This is desirable when 2190 // WiFi ends up validating and out scoring cellular. 2191 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2192 nai.getCurrentScoreAsValidated())) { 2193 unneeded = false; 2194 break; 2195 } 2196 } 2197 } 2198 return unneeded; 2199 } 2200 2201 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2202 NetworkRequestInfo nri = mNetworkRequests.get(request); 2203 if (nri != null) { 2204 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2205 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2206 return; 2207 } 2208 if (DBG) log("releasing NetworkRequest " + request); 2209 nri.unlinkDeathRecipient(); 2210 mNetworkRequests.remove(request); 2211 if (nri.isRequest) { 2212 // Find all networks that are satisfying this request and remove the request 2213 // from their request lists. 2214 // TODO - it's my understanding that for a request there is only a single 2215 // network satisfying it, so this loop is wasteful 2216 boolean wasKept = false; 2217 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2218 if (nai.networkRequests.get(nri.request.requestId) != null) { 2219 nai.networkRequests.remove(nri.request.requestId); 2220 if (DBG) { 2221 log(" Removing from current network " + nai.name() + 2222 ", leaving " + nai.networkRequests.size() + 2223 " requests."); 2224 } 2225 if (unneeded(nai)) { 2226 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2227 teardownUnneededNetwork(nai); 2228 } else { 2229 // suspect there should only be one pass through here 2230 // but if any were kept do the check below 2231 wasKept |= true; 2232 } 2233 } 2234 } 2235 2236 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2237 if (nai != null) { 2238 mNetworkForRequestId.remove(nri.request.requestId); 2239 } 2240 // Maintain the illusion. When this request arrived, we might have pretended 2241 // that a network connected to serve it, even though the network was already 2242 // connected. Now that this request has gone away, we might have to pretend 2243 // that the network disconnected. LegacyTypeTracker will generate that 2244 // phantom disconnect for this type. 2245 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2246 boolean doRemove = true; 2247 if (wasKept) { 2248 // check if any of the remaining requests for this network are for the 2249 // same legacy type - if so, don't remove the nai 2250 for (int i = 0; i < nai.networkRequests.size(); i++) { 2251 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2252 if (otherRequest.legacyType == nri.request.legacyType && 2253 isRequest(otherRequest)) { 2254 if (DBG) log(" still have other legacy request - leaving"); 2255 doRemove = false; 2256 } 2257 } 2258 } 2259 2260 if (doRemove) { 2261 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2262 } 2263 } 2264 2265 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2266 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2267 nri.request); 2268 } 2269 } else { 2270 // listens don't have a singular affectedNetwork. Check all networks to see 2271 // if this listen request applies and remove it. 2272 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2273 nai.networkRequests.remove(nri.request.requestId); 2274 } 2275 } 2276 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2277 } 2278 } 2279 2280 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2281 enforceConnectivityInternalPermission(); 2282 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2283 accept ? 1 : 0, always ? 1: 0, network)); 2284 } 2285 2286 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2287 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2288 " accept=" + accept + " always=" + always); 2289 2290 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2291 if (nai == null) { 2292 // Nothing to do. 2293 return; 2294 } 2295 2296 if (nai.everValidated) { 2297 // The network validated while the dialog box was up. Don't make any changes. There's a 2298 // TODO in the dialog code to make it go away if the network validates; once that's 2299 // implemented, taking action here will be confusing. 2300 return; 2301 } 2302 2303 if (!nai.networkMisc.explicitlySelected) { 2304 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2305 } 2306 2307 if (accept != nai.networkMisc.acceptUnvalidated) { 2308 int oldScore = nai.getCurrentScore(); 2309 nai.networkMisc.acceptUnvalidated = accept; 2310 rematchAllNetworksAndRequests(nai, oldScore); 2311 sendUpdatedScoreToFactories(nai); 2312 } 2313 2314 if (always) { 2315 nai.asyncChannel.sendMessage( 2316 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2317 } 2318 2319 // TODO: should we also disconnect from the network if accept is false? 2320 } 2321 2322 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2323 mHandler.sendMessageDelayed( 2324 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2325 PROMPT_UNVALIDATED_DELAY_MS); 2326 } 2327 2328 private void handlePromptUnvalidated(Network network) { 2329 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2330 2331 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2332 // we haven't already been told to switch to it regardless of whether it validated or not. 2333 if (nai == null || nai.everValidated || 2334 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2335 return; 2336 } 2337 2338 // TODO: What should we do if we've already switched to this network because we had no 2339 // better option? There are two obvious alternatives. 2340 // 2341 // 1. Decide that there's no point prompting because this is our only usable network. 2342 // However, because we didn't prompt, if later on a validated network comes along, we'll 2343 // either a) silently switch to it - bad if the user wanted to connect to stay on this 2344 // unvalidated network - or b) prompt the user at that later time - bad because the user 2345 // might not understand why they are now being prompted. 2346 // 2347 // 2. Always prompt the user, even if we have no other network to use. The user could then 2348 // try to find an alternative network to join (remember, if we got here, then the user 2349 // selected this network manually). This is bad because the prompt isn't really very 2350 // useful. 2351 // 2352 // For now we do #1, but we can revisit that later. 2353 if (isDefaultNetwork(nai)) { 2354 return; 2355 } 2356 2357 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2358 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, network); 2359 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2360 intent.setClassName("com.android.settings", 2361 "com.android.settings.wifi.WifiNoInternetDialog"); 2362 mContext.startActivityAsUser(intent, UserHandle.CURRENT); 2363 } 2364 2365 private class InternalHandler extends Handler { 2366 public InternalHandler(Looper looper) { 2367 super(looper); 2368 } 2369 2370 @Override 2371 public void handleMessage(Message msg) { 2372 switch (msg.what) { 2373 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2374 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2375 String causedBy = null; 2376 synchronized (ConnectivityService.this) { 2377 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2378 mNetTransitionWakeLock.isHeld()) { 2379 mNetTransitionWakeLock.release(); 2380 causedBy = mNetTransitionWakeLockCausedBy; 2381 } else { 2382 break; 2383 } 2384 } 2385 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2386 log("Failed to find a new network - expiring NetTransition Wakelock"); 2387 } else { 2388 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2389 " cleared because we found a replacement network"); 2390 } 2391 break; 2392 } 2393 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2394 handleDeprecatedGlobalHttpProxy(); 2395 break; 2396 } 2397 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2398 Intent intent = (Intent)msg.obj; 2399 sendStickyBroadcast(intent); 2400 break; 2401 } 2402 case EVENT_PROXY_HAS_CHANGED: { 2403 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2404 break; 2405 } 2406 case EVENT_REGISTER_NETWORK_FACTORY: { 2407 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2408 break; 2409 } 2410 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2411 handleUnregisterNetworkFactory((Messenger)msg.obj); 2412 break; 2413 } 2414 case EVENT_REGISTER_NETWORK_AGENT: { 2415 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2416 break; 2417 } 2418 case EVENT_REGISTER_NETWORK_REQUEST: 2419 case EVENT_REGISTER_NETWORK_LISTENER: { 2420 handleRegisterNetworkRequest(msg); 2421 break; 2422 } 2423 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2424 handleRegisterNetworkRequestWithIntent(msg); 2425 break; 2426 } 2427 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2428 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2429 break; 2430 } 2431 case EVENT_RELEASE_NETWORK_REQUEST: { 2432 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2433 break; 2434 } 2435 case EVENT_SET_ACCEPT_UNVALIDATED: { 2436 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2437 break; 2438 } 2439 case EVENT_PROMPT_UNVALIDATED: { 2440 handlePromptUnvalidated((Network) msg.obj); 2441 break; 2442 } 2443 case EVENT_SYSTEM_READY: { 2444 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2445 nai.networkMonitor.systemReady = true; 2446 } 2447 break; 2448 } 2449 } 2450 } 2451 } 2452 2453 // javadoc from interface 2454 public int tether(String iface) { 2455 ConnectivityManager.enforceTetherChangePermission(mContext); 2456 if (isTetheringSupported()) { 2457 return mTethering.tether(iface); 2458 } else { 2459 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2460 } 2461 } 2462 2463 // javadoc from interface 2464 public int untether(String iface) { 2465 ConnectivityManager.enforceTetherChangePermission(mContext); 2466 2467 if (isTetheringSupported()) { 2468 return mTethering.untether(iface); 2469 } else { 2470 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2471 } 2472 } 2473 2474 // javadoc from interface 2475 public int getLastTetherError(String iface) { 2476 enforceTetherAccessPermission(); 2477 2478 if (isTetheringSupported()) { 2479 return mTethering.getLastTetherError(iface); 2480 } else { 2481 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2482 } 2483 } 2484 2485 // TODO - proper iface API for selection by property, inspection, etc 2486 public String[] getTetherableUsbRegexs() { 2487 enforceTetherAccessPermission(); 2488 if (isTetheringSupported()) { 2489 return mTethering.getTetherableUsbRegexs(); 2490 } else { 2491 return new String[0]; 2492 } 2493 } 2494 2495 public String[] getTetherableWifiRegexs() { 2496 enforceTetherAccessPermission(); 2497 if (isTetheringSupported()) { 2498 return mTethering.getTetherableWifiRegexs(); 2499 } else { 2500 return new String[0]; 2501 } 2502 } 2503 2504 public String[] getTetherableBluetoothRegexs() { 2505 enforceTetherAccessPermission(); 2506 if (isTetheringSupported()) { 2507 return mTethering.getTetherableBluetoothRegexs(); 2508 } else { 2509 return new String[0]; 2510 } 2511 } 2512 2513 public int setUsbTethering(boolean enable) { 2514 ConnectivityManager.enforceTetherChangePermission(mContext); 2515 if (isTetheringSupported()) { 2516 return mTethering.setUsbTethering(enable); 2517 } else { 2518 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2519 } 2520 } 2521 2522 // TODO - move iface listing, queries, etc to new module 2523 // javadoc from interface 2524 public String[] getTetherableIfaces() { 2525 enforceTetherAccessPermission(); 2526 return mTethering.getTetherableIfaces(); 2527 } 2528 2529 public String[] getTetheredIfaces() { 2530 enforceTetherAccessPermission(); 2531 return mTethering.getTetheredIfaces(); 2532 } 2533 2534 public String[] getTetheringErroredIfaces() { 2535 enforceTetherAccessPermission(); 2536 return mTethering.getErroredIfaces(); 2537 } 2538 2539 public String[] getTetheredDhcpRanges() { 2540 enforceConnectivityInternalPermission(); 2541 return mTethering.getTetheredDhcpRanges(); 2542 } 2543 2544 // if ro.tether.denied = true we default to no tethering 2545 // gservices could set the secure setting to 1 though to enable it on a build where it 2546 // had previously been turned off. 2547 public boolean isTetheringSupported() { 2548 enforceTetherAccessPermission(); 2549 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2550 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2551 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2552 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2553 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2554 mTethering.getTetherableWifiRegexs().length != 0 || 2555 mTethering.getTetherableBluetoothRegexs().length != 0) && 2556 mTethering.getUpstreamIfaceTypes().length != 0); 2557 } 2558 2559 // Called when we lose the default network and have no replacement yet. 2560 // This will automatically be cleared after X seconds or a new default network 2561 // becomes CONNECTED, whichever happens first. The timer is started by the 2562 // first caller and not restarted by subsequent callers. 2563 private void requestNetworkTransitionWakelock(String forWhom) { 2564 int serialNum = 0; 2565 synchronized (this) { 2566 if (mNetTransitionWakeLock.isHeld()) return; 2567 serialNum = ++mNetTransitionWakeLockSerialNumber; 2568 mNetTransitionWakeLock.acquire(); 2569 mNetTransitionWakeLockCausedBy = forWhom; 2570 } 2571 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2572 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2573 mNetTransitionWakeLockTimeout); 2574 return; 2575 } 2576 2577 // 100 percent is full good, 0 is full bad. 2578 public void reportInetCondition(int networkType, int percentage) { 2579 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2580 if (nai == null) return; 2581 reportNetworkConnectivity(nai.network, percentage > 50); 2582 } 2583 2584 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2585 enforceAccessPermission(); 2586 enforceInternetPermission(); 2587 2588 NetworkAgentInfo nai; 2589 if (network == null) { 2590 nai = getDefaultNetwork(); 2591 } else { 2592 nai = getNetworkAgentInfoForNetwork(network); 2593 } 2594 if (nai == null) return; 2595 // Revalidate if the app report does not match our current validated state. 2596 if (hasConnectivity == nai.lastValidated) return; 2597 final int uid = Binder.getCallingUid(); 2598 if (DBG) { 2599 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2600 ") by " + uid); 2601 } 2602 synchronized (nai) { 2603 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2604 // which isn't meant to work on uncreated networks. 2605 if (!nai.created) return; 2606 2607 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2608 2609 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2610 } 2611 } 2612 2613 public ProxyInfo getDefaultProxy() { 2614 // this information is already available as a world read/writable jvm property 2615 // so this API change wouldn't have a benifit. It also breaks the passing 2616 // of proxy info to all the JVMs. 2617 // enforceAccessPermission(); 2618 synchronized (mProxyLock) { 2619 ProxyInfo ret = mGlobalProxy; 2620 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2621 return ret; 2622 } 2623 } 2624 2625 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2626 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2627 // proxy is null then there is no proxy in place). 2628 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2629 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2630 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2631 proxy = null; 2632 } 2633 return proxy; 2634 } 2635 2636 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2637 // better for determining if a new proxy broadcast is necessary: 2638 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2639 // avoid unnecessary broadcasts. 2640 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2641 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2642 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2643 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2644 // all set. 2645 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2646 a = canonicalizeProxyInfo(a); 2647 b = canonicalizeProxyInfo(b); 2648 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2649 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2650 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2651 } 2652 2653 public void setGlobalProxy(ProxyInfo proxyProperties) { 2654 enforceConnectivityInternalPermission(); 2655 2656 synchronized (mProxyLock) { 2657 if (proxyProperties == mGlobalProxy) return; 2658 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2659 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2660 2661 String host = ""; 2662 int port = 0; 2663 String exclList = ""; 2664 String pacFileUrl = ""; 2665 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2666 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2667 if (!proxyProperties.isValid()) { 2668 if (DBG) 2669 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2670 return; 2671 } 2672 mGlobalProxy = new ProxyInfo(proxyProperties); 2673 host = mGlobalProxy.getHost(); 2674 port = mGlobalProxy.getPort(); 2675 exclList = mGlobalProxy.getExclusionListAsString(); 2676 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2677 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2678 } 2679 } else { 2680 mGlobalProxy = null; 2681 } 2682 ContentResolver res = mContext.getContentResolver(); 2683 final long token = Binder.clearCallingIdentity(); 2684 try { 2685 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2686 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2687 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2688 exclList); 2689 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2690 } finally { 2691 Binder.restoreCallingIdentity(token); 2692 } 2693 2694 if (mGlobalProxy == null) { 2695 proxyProperties = mDefaultProxy; 2696 } 2697 sendProxyBroadcast(proxyProperties); 2698 } 2699 } 2700 2701 private void loadGlobalProxy() { 2702 ContentResolver res = mContext.getContentResolver(); 2703 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2704 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2705 String exclList = Settings.Global.getString(res, 2706 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2707 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2708 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2709 ProxyInfo proxyProperties; 2710 if (!TextUtils.isEmpty(pacFileUrl)) { 2711 proxyProperties = new ProxyInfo(pacFileUrl); 2712 } else { 2713 proxyProperties = new ProxyInfo(host, port, exclList); 2714 } 2715 if (!proxyProperties.isValid()) { 2716 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2717 return; 2718 } 2719 2720 synchronized (mProxyLock) { 2721 mGlobalProxy = proxyProperties; 2722 } 2723 } 2724 } 2725 2726 public ProxyInfo getGlobalProxy() { 2727 // this information is already available as a world read/writable jvm property 2728 // so this API change wouldn't have a benifit. It also breaks the passing 2729 // of proxy info to all the JVMs. 2730 // enforceAccessPermission(); 2731 synchronized (mProxyLock) { 2732 return mGlobalProxy; 2733 } 2734 } 2735 2736 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2737 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2738 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2739 proxy = null; 2740 } 2741 synchronized (mProxyLock) { 2742 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2743 if (mDefaultProxy == proxy) return; // catches repeated nulls 2744 if (proxy != null && !proxy.isValid()) { 2745 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2746 return; 2747 } 2748 2749 // This call could be coming from the PacManager, containing the port of the local 2750 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2751 // global (to get the correct local port), and send a broadcast. 2752 // TODO: Switch PacManager to have its own message to send back rather than 2753 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2754 if ((mGlobalProxy != null) && (proxy != null) 2755 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2756 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2757 mGlobalProxy = proxy; 2758 sendProxyBroadcast(mGlobalProxy); 2759 return; 2760 } 2761 mDefaultProxy = proxy; 2762 2763 if (mGlobalProxy != null) return; 2764 if (!mDefaultProxyDisabled) { 2765 sendProxyBroadcast(proxy); 2766 } 2767 } 2768 } 2769 2770 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2771 // This method gets called when any network changes proxy, but the broadcast only ever contains 2772 // the default proxy (even if it hasn't changed). 2773 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2774 // world where an app might be bound to a non-default network. 2775 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2776 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2777 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2778 2779 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2780 sendProxyBroadcast(getDefaultProxy()); 2781 } 2782 } 2783 2784 private void handleDeprecatedGlobalHttpProxy() { 2785 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2786 Settings.Global.HTTP_PROXY); 2787 if (!TextUtils.isEmpty(proxy)) { 2788 String data[] = proxy.split(":"); 2789 if (data.length == 0) { 2790 return; 2791 } 2792 2793 String proxyHost = data[0]; 2794 int proxyPort = 8080; 2795 if (data.length > 1) { 2796 try { 2797 proxyPort = Integer.parseInt(data[1]); 2798 } catch (NumberFormatException e) { 2799 return; 2800 } 2801 } 2802 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2803 setGlobalProxy(p); 2804 } 2805 } 2806 2807 private void sendProxyBroadcast(ProxyInfo proxy) { 2808 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2809 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2810 if (DBG) log("sending Proxy Broadcast for " + proxy); 2811 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2812 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2813 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2814 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2815 final long ident = Binder.clearCallingIdentity(); 2816 try { 2817 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2818 } finally { 2819 Binder.restoreCallingIdentity(ident); 2820 } 2821 } 2822 2823 private static class SettingsObserver extends ContentObserver { 2824 private int mWhat; 2825 private Handler mHandler; 2826 SettingsObserver(Handler handler, int what) { 2827 super(handler); 2828 mHandler = handler; 2829 mWhat = what; 2830 } 2831 2832 void observe(Context context) { 2833 ContentResolver resolver = context.getContentResolver(); 2834 resolver.registerContentObserver(Settings.Global.getUriFor( 2835 Settings.Global.HTTP_PROXY), false, this); 2836 } 2837 2838 @Override 2839 public void onChange(boolean selfChange) { 2840 mHandler.obtainMessage(mWhat).sendToTarget(); 2841 } 2842 } 2843 2844 private static void log(String s) { 2845 Slog.d(TAG, s); 2846 } 2847 2848 private static void loge(String s) { 2849 Slog.e(TAG, s); 2850 } 2851 2852 private static <T> T checkNotNull(T value, String message) { 2853 if (value == null) { 2854 throw new NullPointerException(message); 2855 } 2856 return value; 2857 } 2858 2859 /** 2860 * Prepare for a VPN application. 2861 * Permissions are checked in Vpn class. 2862 * @hide 2863 */ 2864 @Override 2865 public boolean prepareVpn(String oldPackage, String newPackage) { 2866 throwIfLockdownEnabled(); 2867 int user = UserHandle.getUserId(Binder.getCallingUid()); 2868 synchronized(mVpns) { 2869 return mVpns.get(user).prepare(oldPackage, newPackage); 2870 } 2871 } 2872 2873 /** 2874 * Set whether the current VPN package has the ability to launch VPNs without 2875 * user intervention. This method is used by system-privileged apps. 2876 * Permissions are checked in Vpn class. 2877 * @hide 2878 */ 2879 @Override 2880 public void setVpnPackageAuthorization(boolean authorized) { 2881 int user = UserHandle.getUserId(Binder.getCallingUid()); 2882 synchronized(mVpns) { 2883 mVpns.get(user).setPackageAuthorization(authorized); 2884 } 2885 } 2886 2887 /** 2888 * Configure a TUN interface and return its file descriptor. Parameters 2889 * are encoded and opaque to this class. This method is used by VpnBuilder 2890 * and not available in ConnectivityManager. Permissions are checked in 2891 * Vpn class. 2892 * @hide 2893 */ 2894 @Override 2895 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2896 throwIfLockdownEnabled(); 2897 int user = UserHandle.getUserId(Binder.getCallingUid()); 2898 synchronized(mVpns) { 2899 return mVpns.get(user).establish(config); 2900 } 2901 } 2902 2903 /** 2904 * Start legacy VPN, controlling native daemons as needed. Creates a 2905 * secondary thread to perform connection work, returning quickly. 2906 */ 2907 @Override 2908 public void startLegacyVpn(VpnProfile profile) { 2909 throwIfLockdownEnabled(); 2910 final LinkProperties egress = getActiveLinkProperties(); 2911 if (egress == null) { 2912 throw new IllegalStateException("Missing active network connection"); 2913 } 2914 int user = UserHandle.getUserId(Binder.getCallingUid()); 2915 synchronized(mVpns) { 2916 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2917 } 2918 } 2919 2920 /** 2921 * Return the information of the ongoing legacy VPN. This method is used 2922 * by VpnSettings and not available in ConnectivityManager. Permissions 2923 * are checked in Vpn class. 2924 */ 2925 @Override 2926 public LegacyVpnInfo getLegacyVpnInfo() { 2927 throwIfLockdownEnabled(); 2928 int user = UserHandle.getUserId(Binder.getCallingUid()); 2929 synchronized(mVpns) { 2930 return mVpns.get(user).getLegacyVpnInfo(); 2931 } 2932 } 2933 2934 /** 2935 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 2936 * and not available in ConnectivityManager. 2937 */ 2938 @Override 2939 public VpnInfo[] getAllVpnInfo() { 2940 enforceConnectivityInternalPermission(); 2941 if (mLockdownEnabled) { 2942 return new VpnInfo[0]; 2943 } 2944 2945 synchronized(mVpns) { 2946 List<VpnInfo> infoList = new ArrayList<>(); 2947 for (int i = 0; i < mVpns.size(); i++) { 2948 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 2949 if (info != null) { 2950 infoList.add(info); 2951 } 2952 } 2953 return infoList.toArray(new VpnInfo[infoList.size()]); 2954 } 2955 } 2956 2957 /** 2958 * @return VPN information for accounting, or null if we can't retrieve all required 2959 * information, e.g primary underlying iface. 2960 */ 2961 @Nullable 2962 private VpnInfo createVpnInfo(Vpn vpn) { 2963 VpnInfo info = vpn.getVpnInfo(); 2964 if (info == null) { 2965 return null; 2966 } 2967 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 2968 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 2969 // the underlyingNetworks list. 2970 if (underlyingNetworks == null) { 2971 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 2972 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 2973 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 2974 } 2975 } else if (underlyingNetworks.length > 0) { 2976 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 2977 if (linkProperties != null) { 2978 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 2979 } 2980 } 2981 return info.primaryUnderlyingIface == null ? null : info; 2982 } 2983 2984 /** 2985 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2986 * not available in ConnectivityManager. 2987 * Permissions are checked in Vpn class. 2988 * @hide 2989 */ 2990 @Override 2991 public VpnConfig getVpnConfig() { 2992 int user = UserHandle.getUserId(Binder.getCallingUid()); 2993 synchronized(mVpns) { 2994 return mVpns.get(user).getVpnConfig(); 2995 } 2996 } 2997 2998 @Override 2999 public boolean updateLockdownVpn() { 3000 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3001 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3002 return false; 3003 } 3004 3005 // Tear down existing lockdown if profile was removed 3006 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3007 if (mLockdownEnabled) { 3008 if (!mKeyStore.isUnlocked()) { 3009 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3010 return false; 3011 } 3012 3013 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3014 final VpnProfile profile = VpnProfile.decode( 3015 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3016 int user = UserHandle.getUserId(Binder.getCallingUid()); 3017 synchronized(mVpns) { 3018 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3019 profile)); 3020 } 3021 } else { 3022 setLockdownTracker(null); 3023 } 3024 3025 return true; 3026 } 3027 3028 /** 3029 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3030 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3031 */ 3032 private void setLockdownTracker(LockdownVpnTracker tracker) { 3033 // Shutdown any existing tracker 3034 final LockdownVpnTracker existing = mLockdownTracker; 3035 mLockdownTracker = null; 3036 if (existing != null) { 3037 existing.shutdown(); 3038 } 3039 3040 try { 3041 if (tracker != null) { 3042 mNetd.setFirewallEnabled(true); 3043 mNetd.setFirewallInterfaceRule("lo", true); 3044 mLockdownTracker = tracker; 3045 mLockdownTracker.init(); 3046 } else { 3047 mNetd.setFirewallEnabled(false); 3048 } 3049 } catch (RemoteException e) { 3050 // ignored; NMS lives inside system_server 3051 } 3052 } 3053 3054 private void throwIfLockdownEnabled() { 3055 if (mLockdownEnabled) { 3056 throw new IllegalStateException("Unavailable in lockdown mode"); 3057 } 3058 } 3059 3060 @Override 3061 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3062 // TODO: Remove? Any reason to trigger a provisioning check? 3063 return -1; 3064 } 3065 3066 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3067 private volatile boolean mIsNotificationVisible = false; 3068 3069 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3070 if (DBG) { 3071 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3072 + " action=" + action); 3073 } 3074 Intent intent = new Intent(action); 3075 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3076 // Concatenate the range of types onto the range of NetIDs. 3077 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3078 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3079 } 3080 3081 /** 3082 * Show or hide network provisioning notificaitons. 3083 * 3084 * @param id an identifier that uniquely identifies this notification. This must match 3085 * between show and hide calls. We use the NetID value but for legacy callers 3086 * we concatenate the range of types with the range of NetIDs. 3087 */ 3088 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3089 String extraInfo, PendingIntent intent) { 3090 if (DBG) { 3091 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3092 networkType + " extraInfo=" + extraInfo); 3093 } 3094 3095 Resources r = Resources.getSystem(); 3096 NotificationManager notificationManager = (NotificationManager) mContext 3097 .getSystemService(Context.NOTIFICATION_SERVICE); 3098 3099 if (visible) { 3100 CharSequence title; 3101 CharSequence details; 3102 int icon; 3103 Notification notification = new Notification(); 3104 switch (networkType) { 3105 case ConnectivityManager.TYPE_WIFI: 3106 title = r.getString(R.string.wifi_available_sign_in, 0); 3107 details = r.getString(R.string.network_available_sign_in_detailed, 3108 extraInfo); 3109 icon = R.drawable.stat_notify_wifi_in_range; 3110 break; 3111 case ConnectivityManager.TYPE_MOBILE: 3112 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3113 title = r.getString(R.string.network_available_sign_in, 0); 3114 // TODO: Change this to pull from NetworkInfo once a printable 3115 // name has been added to it 3116 details = mTelephonyManager.getNetworkOperatorName(); 3117 icon = R.drawable.stat_notify_rssi_in_range; 3118 break; 3119 default: 3120 title = r.getString(R.string.network_available_sign_in, 0); 3121 details = r.getString(R.string.network_available_sign_in_detailed, 3122 extraInfo); 3123 icon = R.drawable.stat_notify_rssi_in_range; 3124 break; 3125 } 3126 3127 notification.when = 0; 3128 notification.icon = icon; 3129 notification.flags = Notification.FLAG_AUTO_CANCEL; 3130 notification.tickerText = title; 3131 notification.color = mContext.getColor( 3132 com.android.internal.R.color.system_notification_accent_color); 3133 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3134 notification.contentIntent = intent; 3135 3136 try { 3137 notificationManager.notify(NOTIFICATION_ID, id, notification); 3138 } catch (NullPointerException npe) { 3139 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3140 npe.printStackTrace(); 3141 } 3142 } else { 3143 try { 3144 notificationManager.cancel(NOTIFICATION_ID, id); 3145 } catch (NullPointerException npe) { 3146 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3147 npe.printStackTrace(); 3148 } 3149 } 3150 mIsNotificationVisible = visible; 3151 } 3152 3153 /** Location to an updatable file listing carrier provisioning urls. 3154 * An example: 3155 * 3156 * <?xml version="1.0" encoding="utf-8"?> 3157 * <provisioningUrls> 3158 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3159 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3160 * </provisioningUrls> 3161 */ 3162 private static final String PROVISIONING_URL_PATH = 3163 "/data/misc/radio/provisioning_urls.xml"; 3164 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3165 3166 /** XML tag for root element. */ 3167 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3168 /** XML tag for individual url */ 3169 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3170 /** XML tag for redirected url */ 3171 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3172 /** XML attribute for mcc */ 3173 private static final String ATTR_MCC = "mcc"; 3174 /** XML attribute for mnc */ 3175 private static final String ATTR_MNC = "mnc"; 3176 3177 private static final int REDIRECTED_PROVISIONING = 1; 3178 private static final int PROVISIONING = 2; 3179 3180 private String getProvisioningUrlBaseFromFile(int type) { 3181 FileReader fileReader = null; 3182 XmlPullParser parser = null; 3183 Configuration config = mContext.getResources().getConfiguration(); 3184 String tagType; 3185 3186 switch (type) { 3187 case PROVISIONING: 3188 tagType = TAG_PROVISIONING_URL; 3189 break; 3190 case REDIRECTED_PROVISIONING: 3191 tagType = TAG_REDIRECTED_URL; 3192 break; 3193 default: 3194 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3195 type); 3196 } 3197 3198 try { 3199 fileReader = new FileReader(mProvisioningUrlFile); 3200 parser = Xml.newPullParser(); 3201 parser.setInput(fileReader); 3202 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3203 3204 while (true) { 3205 XmlUtils.nextElement(parser); 3206 3207 String element = parser.getName(); 3208 if (element == null) break; 3209 3210 if (element.equals(tagType)) { 3211 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3212 try { 3213 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3214 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3215 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3216 parser.next(); 3217 if (parser.getEventType() == XmlPullParser.TEXT) { 3218 return parser.getText(); 3219 } 3220 } 3221 } 3222 } catch (NumberFormatException e) { 3223 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3224 } 3225 } 3226 } 3227 return null; 3228 } catch (FileNotFoundException e) { 3229 loge("Carrier Provisioning Urls file not found"); 3230 } catch (XmlPullParserException e) { 3231 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3232 } catch (IOException e) { 3233 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3234 } finally { 3235 if (fileReader != null) { 3236 try { 3237 fileReader.close(); 3238 } catch (IOException e) {} 3239 } 3240 } 3241 return null; 3242 } 3243 3244 @Override 3245 public String getMobileRedirectedProvisioningUrl() { 3246 enforceConnectivityInternalPermission(); 3247 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3248 if (TextUtils.isEmpty(url)) { 3249 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3250 } 3251 return url; 3252 } 3253 3254 @Override 3255 public String getMobileProvisioningUrl() { 3256 enforceConnectivityInternalPermission(); 3257 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3258 if (TextUtils.isEmpty(url)) { 3259 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3260 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3261 } else { 3262 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3263 } 3264 // populate the iccid, imei and phone number in the provisioning url. 3265 if (!TextUtils.isEmpty(url)) { 3266 String phoneNumber = mTelephonyManager.getLine1Number(); 3267 if (TextUtils.isEmpty(phoneNumber)) { 3268 phoneNumber = "0000000000"; 3269 } 3270 url = String.format(url, 3271 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3272 mTelephonyManager.getDeviceId() /* IMEI */, 3273 phoneNumber /* Phone numer */); 3274 } 3275 3276 return url; 3277 } 3278 3279 @Override 3280 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3281 String action) { 3282 enforceConnectivityInternalPermission(); 3283 final long ident = Binder.clearCallingIdentity(); 3284 try { 3285 setProvNotificationVisible(visible, networkType, action); 3286 } finally { 3287 Binder.restoreCallingIdentity(ident); 3288 } 3289 } 3290 3291 @Override 3292 public void setAirplaneMode(boolean enable) { 3293 enforceConnectivityInternalPermission(); 3294 final long ident = Binder.clearCallingIdentity(); 3295 try { 3296 final ContentResolver cr = mContext.getContentResolver(); 3297 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3298 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3299 intent.putExtra("state", enable); 3300 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3301 } finally { 3302 Binder.restoreCallingIdentity(ident); 3303 } 3304 } 3305 3306 private void onUserStart(int userId) { 3307 synchronized(mVpns) { 3308 Vpn userVpn = mVpns.get(userId); 3309 if (userVpn != null) { 3310 loge("Starting user already has a VPN"); 3311 return; 3312 } 3313 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3314 mVpns.put(userId, userVpn); 3315 } 3316 } 3317 3318 private void onUserStop(int userId) { 3319 synchronized(mVpns) { 3320 Vpn userVpn = mVpns.get(userId); 3321 if (userVpn == null) { 3322 loge("Stopping user has no VPN"); 3323 return; 3324 } 3325 mVpns.delete(userId); 3326 } 3327 } 3328 3329 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3330 @Override 3331 public void onReceive(Context context, Intent intent) { 3332 final String action = intent.getAction(); 3333 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3334 if (userId == UserHandle.USER_NULL) return; 3335 3336 if (Intent.ACTION_USER_STARTING.equals(action)) { 3337 onUserStart(userId); 3338 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3339 onUserStop(userId); 3340 } 3341 } 3342 }; 3343 3344 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3345 new HashMap<Messenger, NetworkFactoryInfo>(); 3346 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3347 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3348 3349 private static class NetworkFactoryInfo { 3350 public final String name; 3351 public final Messenger messenger; 3352 public final AsyncChannel asyncChannel; 3353 3354 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3355 this.name = name; 3356 this.messenger = messenger; 3357 this.asyncChannel = asyncChannel; 3358 } 3359 } 3360 3361 /** 3362 * Tracks info about the requester. 3363 * Also used to notice when the calling process dies so we can self-expire 3364 */ 3365 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3366 static final boolean REQUEST = true; 3367 static final boolean LISTEN = false; 3368 3369 final NetworkRequest request; 3370 final PendingIntent mPendingIntent; 3371 boolean mPendingIntentSent; 3372 private final IBinder mBinder; 3373 final int mPid; 3374 final int mUid; 3375 final Messenger messenger; 3376 final boolean isRequest; 3377 3378 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3379 request = r; 3380 mPendingIntent = pi; 3381 messenger = null; 3382 mBinder = null; 3383 mPid = getCallingPid(); 3384 mUid = getCallingUid(); 3385 this.isRequest = isRequest; 3386 } 3387 3388 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3389 super(); 3390 messenger = m; 3391 request = r; 3392 mBinder = binder; 3393 mPid = getCallingPid(); 3394 mUid = getCallingUid(); 3395 this.isRequest = isRequest; 3396 mPendingIntent = null; 3397 3398 try { 3399 mBinder.linkToDeath(this, 0); 3400 } catch (RemoteException e) { 3401 binderDied(); 3402 } 3403 } 3404 3405 void unlinkDeathRecipient() { 3406 if (mBinder != null) { 3407 mBinder.unlinkToDeath(this, 0); 3408 } 3409 } 3410 3411 public void binderDied() { 3412 log("ConnectivityService NetworkRequestInfo binderDied(" + 3413 request + ", " + mBinder + ")"); 3414 releaseNetworkRequest(request); 3415 } 3416 3417 public String toString() { 3418 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3419 mPid + " for " + request + 3420 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3421 } 3422 } 3423 3424 @Override 3425 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3426 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3427 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3428 enforceNetworkRequestPermissions(networkCapabilities); 3429 enforceMeteredApnPolicy(networkCapabilities); 3430 3431 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3432 throw new IllegalArgumentException("Bad timeout specified"); 3433 } 3434 3435 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3436 nextNetworkRequestId()); 3437 if (DBG) log("requestNetwork for " + networkRequest); 3438 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3439 NetworkRequestInfo.REQUEST); 3440 3441 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3442 if (timeoutMs > 0) { 3443 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3444 nri), timeoutMs); 3445 } 3446 return networkRequest; 3447 } 3448 3449 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3450 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3451 == false) { 3452 enforceConnectivityInternalPermission(); 3453 } else { 3454 enforceChangePermission(); 3455 } 3456 } 3457 3458 @Override 3459 public boolean requestBwUpdate(Network network) { 3460 enforceAccessPermission(); 3461 NetworkAgentInfo nai = null; 3462 if (network == null) { 3463 return false; 3464 } 3465 synchronized (mNetworkForNetId) { 3466 nai = mNetworkForNetId.get(network.netId); 3467 } 3468 if (nai != null) { 3469 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3470 return true; 3471 } 3472 return false; 3473 } 3474 3475 3476 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3477 // if UID is restricted, don't allow them to bring up metered APNs 3478 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3479 == false) { 3480 final int uidRules; 3481 final int uid = Binder.getCallingUid(); 3482 synchronized(mRulesLock) { 3483 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3484 } 3485 if ((uidRules & RULE_REJECT_METERED) != 0) { 3486 // we could silently fail or we can filter the available nets to only give 3487 // them those they have access to. Chose the more useful 3488 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3489 } 3490 } 3491 } 3492 3493 @Override 3494 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3495 PendingIntent operation) { 3496 checkNotNull(operation, "PendingIntent cannot be null."); 3497 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3498 enforceNetworkRequestPermissions(networkCapabilities); 3499 enforceMeteredApnPolicy(networkCapabilities); 3500 3501 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3502 nextNetworkRequestId()); 3503 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3504 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3505 NetworkRequestInfo.REQUEST); 3506 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3507 nri)); 3508 return networkRequest; 3509 } 3510 3511 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3512 mHandler.sendMessageDelayed( 3513 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3514 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3515 } 3516 3517 @Override 3518 public void releasePendingNetworkRequest(PendingIntent operation) { 3519 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3520 getCallingUid(), 0, operation)); 3521 } 3522 3523 @Override 3524 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3525 Messenger messenger, IBinder binder) { 3526 enforceAccessPermission(); 3527 3528 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3529 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3530 if (DBG) log("listenForNetwork for " + networkRequest); 3531 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3532 NetworkRequestInfo.LISTEN); 3533 3534 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3535 return networkRequest; 3536 } 3537 3538 @Override 3539 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3540 PendingIntent operation) { 3541 } 3542 3543 @Override 3544 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3545 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3546 0, networkRequest)); 3547 } 3548 3549 @Override 3550 public void registerNetworkFactory(Messenger messenger, String name) { 3551 enforceConnectivityInternalPermission(); 3552 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3553 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3554 } 3555 3556 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3557 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3558 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3559 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3560 } 3561 3562 @Override 3563 public void unregisterNetworkFactory(Messenger messenger) { 3564 enforceConnectivityInternalPermission(); 3565 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3566 } 3567 3568 private void handleUnregisterNetworkFactory(Messenger messenger) { 3569 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3570 if (nfi == null) { 3571 loge("Failed to find Messenger in unregisterNetworkFactory"); 3572 return; 3573 } 3574 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3575 } 3576 3577 /** 3578 * NetworkAgentInfo supporting a request by requestId. 3579 * These have already been vetted (their Capabilities satisfy the request) 3580 * and the are the highest scored network available. 3581 * the are keyed off the Requests requestId. 3582 */ 3583 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3584 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3585 new SparseArray<NetworkAgentInfo>(); 3586 3587 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3588 @GuardedBy("mNetworkForNetId") 3589 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3590 new SparseArray<NetworkAgentInfo>(); 3591 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3592 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3593 // there may not be a strict 1:1 correlation between the two. 3594 @GuardedBy("mNetworkForNetId") 3595 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3596 3597 // NetworkAgentInfo keyed off its connecting messenger 3598 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3599 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3600 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3601 new HashMap<Messenger, NetworkAgentInfo>(); 3602 3603 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3604 private final NetworkRequest mDefaultRequest; 3605 3606 private NetworkAgentInfo getDefaultNetwork() { 3607 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3608 } 3609 3610 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3611 return nai == getDefaultNetwork(); 3612 } 3613 3614 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3615 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3616 int currentScore, NetworkMisc networkMisc) { 3617 enforceConnectivityInternalPermission(); 3618 3619 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3620 // satisfies mDefaultRequest. 3621 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3622 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3623 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3624 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3625 synchronized (this) { 3626 nai.networkMonitor.systemReady = mSystemReady; 3627 } 3628 if (DBG) log("registerNetworkAgent " + nai); 3629 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3630 return nai.network.netId; 3631 } 3632 3633 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3634 if (VDBG) log("Got NetworkAgent Messenger"); 3635 mNetworkAgentInfos.put(na.messenger, na); 3636 synchronized (mNetworkForNetId) { 3637 mNetworkForNetId.put(na.network.netId, na); 3638 } 3639 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3640 NetworkInfo networkInfo = na.networkInfo; 3641 na.networkInfo = null; 3642 updateNetworkInfo(na, networkInfo); 3643 } 3644 3645 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3646 LinkProperties newLp = networkAgent.linkProperties; 3647 int netId = networkAgent.network.netId; 3648 3649 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3650 // we do anything else, make sure its LinkProperties are accurate. 3651 if (networkAgent.clatd != null) { 3652 networkAgent.clatd.fixupLinkProperties(oldLp); 3653 } 3654 3655 updateInterfaces(newLp, oldLp, netId); 3656 updateMtu(newLp, oldLp); 3657 // TODO - figure out what to do for clat 3658// for (LinkProperties lp : newLp.getStackedLinks()) { 3659// updateMtu(lp, null); 3660// } 3661 updateTcpBufferSizes(networkAgent); 3662 3663 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3664 // For now, use it only when the network has Internet access. http://b/18327075 3665 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3666 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3667 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3668 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3669 3670 updateClat(newLp, oldLp, networkAgent); 3671 if (isDefaultNetwork(networkAgent)) { 3672 handleApplyDefaultProxy(newLp.getHttpProxy()); 3673 } else { 3674 updateProxy(newLp, oldLp, networkAgent); 3675 } 3676 // TODO - move this check to cover the whole function 3677 if (!Objects.equals(newLp, oldLp)) { 3678 notifyIfacesChanged(); 3679 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3680 } 3681 } 3682 3683 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3684 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3685 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3686 3687 if (!wasRunningClat && shouldRunClat) { 3688 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3689 nai.clatd.start(); 3690 } else if (wasRunningClat && !shouldRunClat) { 3691 nai.clatd.stop(); 3692 } 3693 } 3694 3695 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3696 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3697 if (oldLp != null) { 3698 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3699 } else if (newLp != null) { 3700 interfaceDiff.added = newLp.getAllInterfaceNames(); 3701 } 3702 for (String iface : interfaceDiff.added) { 3703 try { 3704 if (DBG) log("Adding iface " + iface + " to network " + netId); 3705 mNetd.addInterfaceToNetwork(iface, netId); 3706 } catch (Exception e) { 3707 loge("Exception adding interface: " + e); 3708 } 3709 } 3710 for (String iface : interfaceDiff.removed) { 3711 try { 3712 if (DBG) log("Removing iface " + iface + " from network " + netId); 3713 mNetd.removeInterfaceFromNetwork(iface, netId); 3714 } catch (Exception e) { 3715 loge("Exception removing interface: " + e); 3716 } 3717 } 3718 } 3719 3720 /** 3721 * Have netd update routes from oldLp to newLp. 3722 * @return true if routes changed between oldLp and newLp 3723 */ 3724 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3725 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3726 if (oldLp != null) { 3727 routeDiff = oldLp.compareAllRoutes(newLp); 3728 } else if (newLp != null) { 3729 routeDiff.added = newLp.getAllRoutes(); 3730 } 3731 3732 // add routes before removing old in case it helps with continuous connectivity 3733 3734 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3735 for (RouteInfo route : routeDiff.added) { 3736 if (route.hasGateway()) continue; 3737 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3738 try { 3739 mNetd.addRoute(netId, route); 3740 } catch (Exception e) { 3741 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3742 loge("Exception in addRoute for non-gateway: " + e); 3743 } 3744 } 3745 } 3746 for (RouteInfo route : routeDiff.added) { 3747 if (route.hasGateway() == false) continue; 3748 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3749 try { 3750 mNetd.addRoute(netId, route); 3751 } catch (Exception e) { 3752 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3753 loge("Exception in addRoute for gateway: " + e); 3754 } 3755 } 3756 } 3757 3758 for (RouteInfo route : routeDiff.removed) { 3759 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3760 try { 3761 mNetd.removeRoute(netId, route); 3762 } catch (Exception e) { 3763 loge("Exception in removeRoute: " + e); 3764 } 3765 } 3766 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3767 } 3768 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3769 boolean flush, boolean useDefaultDns) { 3770 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3771 Collection<InetAddress> dnses = newLp.getDnsServers(); 3772 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3773 dnses = new ArrayList(); 3774 dnses.add(mDefaultDns); 3775 if (DBG) { 3776 loge("no dns provided for netId " + netId + ", so using defaults"); 3777 } 3778 } 3779 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3780 try { 3781 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3782 newLp.getDomains()); 3783 } catch (Exception e) { 3784 loge("Exception in setDnsServersForNetwork: " + e); 3785 } 3786 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3787 if (defaultNai != null && defaultNai.network.netId == netId) { 3788 setDefaultDnsSystemProperties(dnses); 3789 } 3790 flushVmDnsCache(); 3791 } else if (flush) { 3792 try { 3793 mNetd.flushNetworkDnsCache(netId); 3794 } catch (Exception e) { 3795 loge("Exception in flushNetworkDnsCache: " + e); 3796 } 3797 flushVmDnsCache(); 3798 } 3799 } 3800 3801 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3802 int last = 0; 3803 for (InetAddress dns : dnses) { 3804 ++last; 3805 String key = "net.dns" + last; 3806 String value = dns.getHostAddress(); 3807 SystemProperties.set(key, value); 3808 } 3809 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3810 String key = "net.dns" + i; 3811 SystemProperties.set(key, ""); 3812 } 3813 mNumDnsEntries = last; 3814 } 3815 3816 private void updateCapabilities(NetworkAgentInfo networkAgent, 3817 NetworkCapabilities networkCapabilities) { 3818 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3819 synchronized (networkAgent) { 3820 networkAgent.networkCapabilities = networkCapabilities; 3821 } 3822 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3823 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3824 } 3825 } 3826 3827 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3828 for (int i = 0; i < nai.networkRequests.size(); i++) { 3829 NetworkRequest nr = nai.networkRequests.valueAt(i); 3830 // Don't send listening requests to factories. b/17393458 3831 if (!isRequest(nr)) continue; 3832 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3833 } 3834 } 3835 3836 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3837 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3838 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3839 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3840 networkRequest); 3841 } 3842 } 3843 3844 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3845 int notificationType) { 3846 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 3847 Intent intent = new Intent(); 3848 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3849 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3850 nri.mPendingIntentSent = true; 3851 sendIntent(nri.mPendingIntent, intent); 3852 } 3853 // else not handled 3854 } 3855 3856 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3857 mPendingIntentWakeLock.acquire(); 3858 try { 3859 if (DBG) log("Sending " + pendingIntent); 3860 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3861 } catch (PendingIntent.CanceledException e) { 3862 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3863 mPendingIntentWakeLock.release(); 3864 releasePendingNetworkRequest(pendingIntent); 3865 } 3866 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3867 } 3868 3869 @Override 3870 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3871 String resultData, Bundle resultExtras) { 3872 if (DBG) log("Finished sending " + pendingIntent); 3873 mPendingIntentWakeLock.release(); 3874 // Release with a delay so the receiving client has an opportunity to put in its 3875 // own request. 3876 releasePendingNetworkRequestWithDelay(pendingIntent); 3877 } 3878 3879 private void callCallbackForRequest(NetworkRequestInfo nri, 3880 NetworkAgentInfo networkAgent, int notificationType) { 3881 if (nri.messenger == null) return; // Default request has no msgr 3882 Bundle bundle = new Bundle(); 3883 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3884 new NetworkRequest(nri.request)); 3885 Message msg = Message.obtain(); 3886 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3887 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3888 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3889 } 3890 switch (notificationType) { 3891 case ConnectivityManager.CALLBACK_LOSING: { 3892 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3893 break; 3894 } 3895 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3896 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3897 new NetworkCapabilities(networkAgent.networkCapabilities)); 3898 break; 3899 } 3900 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3901 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3902 new LinkProperties(networkAgent.linkProperties)); 3903 break; 3904 } 3905 } 3906 msg.what = notificationType; 3907 msg.setData(bundle); 3908 try { 3909 if (VDBG) { 3910 log("sending notification " + notifyTypeToName(notificationType) + 3911 " for " + nri.request); 3912 } 3913 nri.messenger.send(msg); 3914 } catch (RemoteException e) { 3915 // may occur naturally in the race of binder death. 3916 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3917 } 3918 } 3919 3920 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3921 for (int i = 0; i < nai.networkRequests.size(); i++) { 3922 NetworkRequest nr = nai.networkRequests.valueAt(i); 3923 // Ignore listening requests. 3924 if (!isRequest(nr)) continue; 3925 loge("Dead network still had at least " + nr); 3926 break; 3927 } 3928 nai.asyncChannel.disconnect(); 3929 } 3930 3931 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3932 if (oldNetwork == null) { 3933 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3934 return; 3935 } 3936 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3937 teardownUnneededNetwork(oldNetwork); 3938 } 3939 3940 private void makeDefault(NetworkAgentInfo newNetwork) { 3941 if (DBG) log("Switching to new default network: " + newNetwork); 3942 setupDataActivityTracking(newNetwork); 3943 try { 3944 mNetd.setDefaultNetId(newNetwork.network.netId); 3945 } catch (Exception e) { 3946 loge("Exception setting default network :" + e); 3947 } 3948 notifyLockdownVpn(newNetwork); 3949 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3950 updateTcpBufferSizes(newNetwork); 3951 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 3952 } 3953 3954 // Handles a network appearing or improving its score. 3955 // 3956 // - Evaluates all current NetworkRequests that can be 3957 // satisfied by newNetwork, and reassigns to newNetwork 3958 // any such requests for which newNetwork is the best. 3959 // 3960 // - Lingers any validated Networks that as a result are no longer 3961 // needed. A network is needed if it is the best network for 3962 // one or more NetworkRequests, or if it is a VPN. 3963 // 3964 // - Tears down newNetwork if it just became validated 3965 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 3966 // 3967 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 3968 // networks that have no chance (i.e. even if validated) 3969 // of becoming the highest scoring network. 3970 // 3971 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3972 // it does not remove NetworkRequests that other Networks could better satisfy. 3973 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3974 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3975 // as it performs better by a factor of the number of Networks. 3976 // 3977 // @param newNetwork is the network to be matched against NetworkRequests. 3978 // @param nascent indicates if newNetwork just became validated, in which case it should be 3979 // torn down if unneeded. 3980 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 3981 // performed to tear down unvalidated networks that have no chance (i.e. even if 3982 // validated) of becoming the highest scoring network. 3983 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 3984 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 3985 if (!newNetwork.created) return; 3986 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 3987 loge("ERROR: nascent network not validated."); 3988 } 3989 boolean keep = newNetwork.isVPN(); 3990 boolean isNewDefault = false; 3991 NetworkAgentInfo oldDefaultNetwork = null; 3992 if (DBG) log("rematching " + newNetwork.name()); 3993 // Find and migrate to this Network any NetworkRequests for 3994 // which this network is now the best. 3995 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3996 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3997 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3998 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 3999 if (newNetwork == currentNetwork) { 4000 if (DBG) { 4001 log("Network " + newNetwork.name() + " was already satisfying" + 4002 " request " + nri.request.requestId + ". No change."); 4003 } 4004 keep = true; 4005 continue; 4006 } 4007 4008 // check if it satisfies the NetworkCapabilities 4009 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4010 if (newNetwork.satisfies(nri.request)) { 4011 if (!nri.isRequest) { 4012 // This is not a request, it's a callback listener. 4013 // Add it to newNetwork regardless of score. 4014 newNetwork.addRequest(nri.request); 4015 continue; 4016 } 4017 4018 // next check if it's better than any current network we're using for 4019 // this request 4020 if (VDBG) { 4021 log("currentScore = " + 4022 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4023 ", newScore = " + newNetwork.getCurrentScore()); 4024 } 4025 if (currentNetwork == null || 4026 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4027 if (currentNetwork != null) { 4028 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4029 currentNetwork.networkRequests.remove(nri.request.requestId); 4030 currentNetwork.networkLingered.add(nri.request); 4031 affectedNetworks.add(currentNetwork); 4032 } else { 4033 if (DBG) log(" accepting network in place of null"); 4034 } 4035 unlinger(newNetwork); 4036 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4037 newNetwork.addRequest(nri.request); 4038 keep = true; 4039 // Tell NetworkFactories about the new score, so they can stop 4040 // trying to connect if they know they cannot match it. 4041 // TODO - this could get expensive if we have alot of requests for this 4042 // network. Think about if there is a way to reduce this. Push 4043 // netid->request mapping to each factory? 4044 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4045 if (mDefaultRequest.requestId == nri.request.requestId) { 4046 isNewDefault = true; 4047 oldDefaultNetwork = currentNetwork; 4048 } 4049 } 4050 } 4051 } 4052 // Linger any networks that are no longer needed. 4053 for (NetworkAgentInfo nai : affectedNetworks) { 4054 if (nai.everValidated && unneeded(nai)) { 4055 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4056 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4057 } else { 4058 unlinger(nai); 4059 } 4060 } 4061 if (keep) { 4062 if (isNewDefault) { 4063 // Notify system services that this network is up. 4064 makeDefault(newNetwork); 4065 synchronized (ConnectivityService.this) { 4066 // have a new default network, release the transition wakelock in 4067 // a second if it's held. The second pause is to allow apps 4068 // to reconnect over the new network 4069 if (mNetTransitionWakeLock.isHeld()) { 4070 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4071 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4072 mNetTransitionWakeLockSerialNumber, 0), 4073 1000); 4074 } 4075 } 4076 } 4077 4078 // do this after the default net is switched, but 4079 // before LegacyTypeTracker sends legacy broadcasts 4080 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4081 4082 if (isNewDefault) { 4083 // Maintain the illusion: since the legacy API only 4084 // understands one network at a time, we must pretend 4085 // that the current default network disconnected before 4086 // the new one connected. 4087 if (oldDefaultNetwork != null) { 4088 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4089 oldDefaultNetwork); 4090 } 4091 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4092 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4093 notifyLockdownVpn(newNetwork); 4094 } 4095 4096 // Notify battery stats service about this network, both the normal 4097 // interface and any stacked links. 4098 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4099 try { 4100 final IBatteryStats bs = BatteryStatsService.getService(); 4101 final int type = newNetwork.networkInfo.getType(); 4102 4103 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4104 bs.noteNetworkInterfaceType(baseIface, type); 4105 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4106 final String stackedIface = stacked.getInterfaceName(); 4107 bs.noteNetworkInterfaceType(stackedIface, type); 4108 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4109 } 4110 } catch (RemoteException ignored) { 4111 } 4112 4113 // This has to happen after the notifyNetworkCallbacks as that tickles each 4114 // ConnectivityManager instance so that legacy requests correctly bind dns 4115 // requests to this network. The legacy users are listening for this bcast 4116 // and will generally do a dns request so they can ensureRouteToHost and if 4117 // they do that before the callbacks happen they'll use the default network. 4118 // 4119 // TODO: Is there still a race here? We send the broadcast 4120 // after sending the callback, but if the app can receive the 4121 // broadcast before the callback, it might still break. 4122 // 4123 // This *does* introduce a race where if the user uses the new api 4124 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4125 // they may get old info. Reverse this after the old startUsing api is removed. 4126 // This is on top of the multiple intent sequencing referenced in the todo above. 4127 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4128 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4129 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4130 // legacy type tracker filters out repeat adds 4131 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4132 } 4133 } 4134 4135 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4136 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4137 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4138 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4139 if (newNetwork.isVPN()) { 4140 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4141 } 4142 } else if (nascent == NascentState.JUST_VALIDATED) { 4143 // Only tear down newly validated networks here. Leave unvalidated to either become 4144 // validated (and get evaluated against peers, one losing here), or get reaped (see 4145 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4146 // network. Networks that have been up for a while and are validated should be torn 4147 // down via the lingering process so communication on that network is given time to 4148 // wrap up. 4149 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4150 teardownUnneededNetwork(newNetwork); 4151 } 4152 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4153 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4154 if (!nai.everValidated && unneeded(nai)) { 4155 if (DBG) log("Reaping " + nai.name()); 4156 teardownUnneededNetwork(nai); 4157 } 4158 } 4159 } 4160 } 4161 4162 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4163 // being disconnected. 4164 // If only one Network's score or capabilities have been modified since the last time 4165 // this function was called, pass this Network in via the "changed" arugment, otherwise 4166 // pass null. 4167 // If only one Network has been changed but its NetworkCapabilities have not changed, 4168 // pass in the Network's score (from getCurrentScore()) prior to the change via 4169 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4170 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4171 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4172 // to avoid the slowness. It is not simply enough to process just "changed", for 4173 // example in the case where "changed"'s score decreases and another network should begin 4174 // satifying a NetworkRequest that "changed" currently satisfies. 4175 4176 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4177 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4178 // rematchNetworkAndRequests() handles. 4179 if (changed != null && oldScore < changed.getCurrentScore()) { 4180 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4181 ReapUnvalidatedNetworks.REAP); 4182 } else { 4183 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4184 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4185 NascentState.NOT_JUST_VALIDATED, 4186 // Only reap the last time through the loop. Reaping before all rematching 4187 // is complete could incorrectly teardown a network that hasn't yet been 4188 // rematched. 4189 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4190 : ReapUnvalidatedNetworks.REAP); 4191 } 4192 } 4193 } 4194 4195 private void updateInetCondition(NetworkAgentInfo nai) { 4196 // Don't bother updating until we've graduated to validated at least once. 4197 if (!nai.everValidated) return; 4198 // For now only update icons for default connection. 4199 // TODO: Update WiFi and cellular icons separately. b/17237507 4200 if (!isDefaultNetwork(nai)) return; 4201 4202 int newInetCondition = nai.lastValidated ? 100 : 0; 4203 // Don't repeat publish. 4204 if (newInetCondition == mDefaultInetConditionPublished) return; 4205 4206 mDefaultInetConditionPublished = newInetCondition; 4207 sendInetConditionBroadcast(nai.networkInfo); 4208 } 4209 4210 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4211 if (mLockdownTracker != null) { 4212 if (nai != null && nai.isVPN()) { 4213 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4214 } else { 4215 mLockdownTracker.onNetworkInfoChanged(); 4216 } 4217 } 4218 } 4219 4220 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4221 NetworkInfo.State state = newInfo.getState(); 4222 NetworkInfo oldInfo = null; 4223 synchronized (networkAgent) { 4224 oldInfo = networkAgent.networkInfo; 4225 networkAgent.networkInfo = newInfo; 4226 } 4227 notifyLockdownVpn(networkAgent); 4228 4229 if (oldInfo != null && oldInfo.getState() == state) { 4230 if (VDBG) log("ignoring duplicate network state non-change"); 4231 return; 4232 } 4233 if (DBG) { 4234 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4235 (oldInfo == null ? "null" : oldInfo.getState()) + 4236 " to " + state); 4237 } 4238 4239 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4240 try { 4241 // This should never fail. Specifying an already in use NetID will cause failure. 4242 if (networkAgent.isVPN()) { 4243 mNetd.createVirtualNetwork(networkAgent.network.netId, 4244 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4245 (networkAgent.networkMisc == null || 4246 !networkAgent.networkMisc.allowBypass)); 4247 } else { 4248 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4249 } 4250 } catch (Exception e) { 4251 loge("Error creating network " + networkAgent.network.netId + ": " 4252 + e.getMessage()); 4253 return; 4254 } 4255 networkAgent.created = true; 4256 updateLinkProperties(networkAgent, null); 4257 notifyIfacesChanged(); 4258 4259 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4260 scheduleUnvalidatedPrompt(networkAgent); 4261 4262 if (networkAgent.isVPN()) { 4263 // Temporarily disable the default proxy (not global). 4264 synchronized (mProxyLock) { 4265 if (!mDefaultProxyDisabled) { 4266 mDefaultProxyDisabled = true; 4267 if (mGlobalProxy == null && mDefaultProxy != null) { 4268 sendProxyBroadcast(null); 4269 } 4270 } 4271 } 4272 // TODO: support proxy per network. 4273 } 4274 4275 // Consider network even though it is not yet validated. 4276 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4277 ReapUnvalidatedNetworks.REAP); 4278 4279 // This has to happen after matching the requests, because callbacks are just requests. 4280 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4281 } else if (state == NetworkInfo.State.DISCONNECTED || 4282 state == NetworkInfo.State.SUSPENDED) { 4283 networkAgent.asyncChannel.disconnect(); 4284 if (networkAgent.isVPN()) { 4285 synchronized (mProxyLock) { 4286 if (mDefaultProxyDisabled) { 4287 mDefaultProxyDisabled = false; 4288 if (mGlobalProxy == null && mDefaultProxy != null) { 4289 sendProxyBroadcast(mDefaultProxy); 4290 } 4291 } 4292 } 4293 } 4294 } 4295 } 4296 4297 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4298 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4299 if (score < 0) { 4300 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4301 "). Bumping score to min of 0"); 4302 score = 0; 4303 } 4304 4305 final int oldScore = nai.getCurrentScore(); 4306 nai.setCurrentScore(score); 4307 4308 rematchAllNetworksAndRequests(nai, oldScore); 4309 4310 sendUpdatedScoreToFactories(nai); 4311 } 4312 4313 // notify only this one new request of the current state 4314 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4315 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4316 // TODO - read state from monitor to decide what to send. 4317// if (nai.networkMonitor.isLingering()) { 4318// notifyType = NetworkCallbacks.LOSING; 4319// } else if (nai.networkMonitor.isEvaluating()) { 4320// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4321// } 4322 if (nri.mPendingIntent == null) { 4323 callCallbackForRequest(nri, nai, notifyType); 4324 } else { 4325 sendPendingIntentForRequest(nri, nai, notifyType); 4326 } 4327 } 4328 4329 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4330 // The NetworkInfo we actually send out has no bearing on the real 4331 // state of affairs. For example, if the default connection is mobile, 4332 // and a request for HIPRI has just gone away, we need to pretend that 4333 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4334 // the state to DISCONNECTED, even though the network is of type MOBILE 4335 // and is still connected. 4336 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4337 info.setType(type); 4338 if (connected) { 4339 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4340 sendConnectedBroadcast(info); 4341 } else { 4342 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4343 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4344 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4345 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4346 if (info.isFailover()) { 4347 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4348 nai.networkInfo.setFailover(false); 4349 } 4350 if (info.getReason() != null) { 4351 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4352 } 4353 if (info.getExtraInfo() != null) { 4354 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4355 } 4356 NetworkAgentInfo newDefaultAgent = null; 4357 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4358 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4359 if (newDefaultAgent != null) { 4360 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4361 newDefaultAgent.networkInfo); 4362 } else { 4363 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4364 } 4365 } 4366 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4367 mDefaultInetConditionPublished); 4368 final Intent immediateIntent = new Intent(intent); 4369 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4370 sendStickyBroadcast(immediateIntent); 4371 sendStickyBroadcast(intent); 4372 if (newDefaultAgent != null) { 4373 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4374 } 4375 } 4376 } 4377 4378 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4379 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4380 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4381 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4382 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4383 if (VDBG) log(" sending notification for " + nr); 4384 if (nri.mPendingIntent == null) { 4385 callCallbackForRequest(nri, networkAgent, notifyType); 4386 } else { 4387 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4388 } 4389 } 4390 } 4391 4392 private String notifyTypeToName(int notifyType) { 4393 switch (notifyType) { 4394 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4395 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4396 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4397 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4398 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4399 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4400 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4401 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4402 } 4403 return "UNKNOWN"; 4404 } 4405 4406 /** 4407 * Notify other system services that set of active ifaces has changed. 4408 */ 4409 private void notifyIfacesChanged() { 4410 try { 4411 mStatsService.forceUpdateIfaces(); 4412 } catch (Exception ignored) { 4413 } 4414 } 4415 4416 @Override 4417 public boolean addVpnAddress(String address, int prefixLength) { 4418 throwIfLockdownEnabled(); 4419 int user = UserHandle.getUserId(Binder.getCallingUid()); 4420 synchronized (mVpns) { 4421 return mVpns.get(user).addAddress(address, prefixLength); 4422 } 4423 } 4424 4425 @Override 4426 public boolean removeVpnAddress(String address, int prefixLength) { 4427 throwIfLockdownEnabled(); 4428 int user = UserHandle.getUserId(Binder.getCallingUid()); 4429 synchronized (mVpns) { 4430 return mVpns.get(user).removeAddress(address, prefixLength); 4431 } 4432 } 4433 4434 @Override 4435 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4436 throwIfLockdownEnabled(); 4437 int user = UserHandle.getUserId(Binder.getCallingUid()); 4438 boolean success; 4439 synchronized (mVpns) { 4440 success = mVpns.get(user).setUnderlyingNetworks(networks); 4441 } 4442 if (success) { 4443 notifyIfacesChanged(); 4444 } 4445 return success; 4446 } 4447} 4448