ConnectivityService.java revision 5c3816f2ff3d40136da1e40eec792d8faf0e75dd
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 android.bluetooth.BluetoothTetheringDataTracker; 20import android.content.ContentResolver; 21import android.content.Context; 22import android.content.Intent; 23import android.content.pm.PackageManager; 24import android.database.ContentObserver; 25import android.net.ConnectivityManager; 26import android.net.DummyDataStateTracker; 27import android.net.EthernetDataTracker; 28import android.net.IConnectivityManager; 29import android.net.LinkAddress; 30import android.net.LinkProperties; 31import android.net.MobileDataStateTracker; 32import android.net.NetworkConfig; 33import android.net.NetworkInfo; 34import android.net.NetworkStateTracker; 35import android.net.NetworkUtils; 36import android.net.Proxy; 37import android.net.ProxyProperties; 38import android.net.RouteInfo; 39import android.net.vpn.VpnManager; 40import android.net.wifi.WifiStateTracker; 41import android.os.Binder; 42import android.os.Handler; 43import android.os.HandlerThread; 44import android.os.IBinder; 45import android.os.INetworkManagementService; 46import android.os.Looper; 47import android.os.Message; 48import android.os.PowerManager; 49import android.os.RemoteException; 50import android.os.ServiceManager; 51import android.os.SystemProperties; 52import android.provider.Settings; 53import android.text.TextUtils; 54import android.util.EventLog; 55import android.util.Slog; 56 57import com.android.internal.telephony.Phone; 58import com.android.server.connectivity.Tethering; 59 60import java.io.FileDescriptor; 61import java.io.FileWriter; 62import java.io.IOException; 63import java.io.PrintWriter; 64import java.net.InetAddress; 65import java.net.Inet4Address; 66import java.net.UnknownHostException; 67import java.util.ArrayList; 68import java.util.Collection; 69import java.util.concurrent.atomic.AtomicBoolean; 70import java.util.GregorianCalendar; 71import java.util.List; 72 73/** 74 * @hide 75 */ 76public class ConnectivityService extends IConnectivityManager.Stub { 77 78 private static final boolean DBG = true; 79 private static final String TAG = "ConnectivityService"; 80 81 // how long to wait before switching back to a radio's default network 82 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 83 // system property that can override the above value 84 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 85 "android.telephony.apn-restore"; 86 87 // used in recursive route setting to add gateways for the host for which 88 // a host route was requested. 89 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 90 91 private Tethering mTethering; 92 private boolean mTetheringConfigValid = false; 93 94 /** 95 * Sometimes we want to refer to the individual network state 96 * trackers separately, and sometimes we just want to treat them 97 * abstractly. 98 */ 99 private NetworkStateTracker mNetTrackers[]; 100 101 /** 102 * A per Net list of the PID's that requested access to the net 103 * used both as a refcount and for per-PID DNS selection 104 */ 105 private List mNetRequestersPids[]; 106 107 private WifiWatchdogService mWifiWatchdogService; 108 109 // priority order of the nettrackers 110 // (excluding dynamically set mNetworkPreference) 111 // TODO - move mNetworkTypePreference into this 112 private int[] mPriorityList; 113 114 private Context mContext; 115 private int mNetworkPreference; 116 private int mActiveDefaultNetwork = -1; 117 // 0 is full bad, 100 is full good 118 private int mDefaultInetCondition = 0; 119 private int mDefaultInetConditionPublished = 0; 120 private boolean mInetConditionChangeInFlight = false; 121 private int mDefaultConnectionSequence = 0; 122 123 private int mNumDnsEntries; 124 125 private boolean mTestMode; 126 private static ConnectivityService sServiceInstance; 127 128 private AtomicBoolean mBackgroundDataEnabled = new AtomicBoolean(true); 129 130 private INetworkManagementService mNetd; 131 132 private static final int ENABLED = 1; 133 private static final int DISABLED = 0; 134 135 // Share the event space with NetworkStateTracker (which can't see this 136 // internal class but sends us events). If you change these, change 137 // NetworkStateTracker.java too. 138 private static final int MIN_NETWORK_STATE_TRACKER_EVENT = 1; 139 private static final int MAX_NETWORK_STATE_TRACKER_EVENT = 100; 140 141 /** 142 * used internally as a delayed event to make us switch back to the 143 * default network 144 */ 145 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 146 MAX_NETWORK_STATE_TRACKER_EVENT + 1; 147 148 /** 149 * used internally to change our mobile data enabled flag 150 */ 151 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 152 MAX_NETWORK_STATE_TRACKER_EVENT + 2; 153 154 /** 155 * used internally to change our network preference setting 156 * arg1 = networkType to prefer 157 */ 158 private static final int EVENT_SET_NETWORK_PREFERENCE = 159 MAX_NETWORK_STATE_TRACKER_EVENT + 3; 160 161 /** 162 * used internally to synchronize inet condition reports 163 * arg1 = networkType 164 * arg2 = condition (0 bad, 100 good) 165 */ 166 private static final int EVENT_INET_CONDITION_CHANGE = 167 MAX_NETWORK_STATE_TRACKER_EVENT + 4; 168 169 /** 170 * used internally to mark the end of inet condition hold periods 171 * arg1 = networkType 172 */ 173 private static final int EVENT_INET_CONDITION_HOLD_END = 174 MAX_NETWORK_STATE_TRACKER_EVENT + 5; 175 176 /** 177 * used internally to set the background data preference 178 * arg1 = TRUE for enabled, FALSE for disabled 179 */ 180 private static final int EVENT_SET_BACKGROUND_DATA = 181 MAX_NETWORK_STATE_TRACKER_EVENT + 6; 182 183 /** 184 * used internally to set enable/disable cellular data 185 * arg1 = ENBALED or DISABLED 186 */ 187 private static final int EVENT_SET_MOBILE_DATA = 188 MAX_NETWORK_STATE_TRACKER_EVENT + 7; 189 190 /** 191 * used internally to clear a wakelock when transitioning 192 * from one net to another 193 */ 194 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 195 MAX_NETWORK_STATE_TRACKER_EVENT + 8; 196 197 /** 198 * used internally to reload global proxy settings 199 */ 200 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 201 MAX_NETWORK_STATE_TRACKER_EVENT + 9; 202 203 /** 204 * used internally to set external dependency met/unmet 205 * arg1 = ENABLED (met) or DISABLED (unmet) 206 * arg2 = NetworkType 207 */ 208 private static final int EVENT_SET_DEPENDENCY_MET = 209 MAX_NETWORK_STATE_TRACKER_EVENT + 10; 210 211 private Handler mHandler; 212 213 // list of DeathRecipients used to make sure features are turned off when 214 // a process dies 215 private List mFeatureUsers; 216 217 private boolean mSystemReady; 218 private Intent mInitialBroadcast; 219 220 private PowerManager.WakeLock mNetTransitionWakeLock; 221 private String mNetTransitionWakeLockCausedBy = ""; 222 private int mNetTransitionWakeLockSerialNumber; 223 private int mNetTransitionWakeLockTimeout; 224 225 private InetAddress mDefaultDns; 226 227 // used in DBG mode to track inet condition reports 228 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 229 private ArrayList mInetLog; 230 231 // track the current default http proxy - tell the world if we get a new one (real change) 232 private ProxyProperties mDefaultProxy = null; 233 // track the global proxy. 234 private ProxyProperties mGlobalProxy = null; 235 private final Object mGlobalProxyLock = new Object(); 236 237 private SettingsObserver mSettingsObserver; 238 239 NetworkConfig[] mNetConfigs; 240 int mNetworksDefined; 241 242 private static class RadioAttributes { 243 public int mSimultaneity; 244 public int mType; 245 public RadioAttributes(String init) { 246 String fragments[] = init.split(","); 247 mType = Integer.parseInt(fragments[0]); 248 mSimultaneity = Integer.parseInt(fragments[1]); 249 } 250 } 251 RadioAttributes[] mRadioAttributes; 252 253 public static synchronized ConnectivityService getInstance(Context context) { 254 if (sServiceInstance == null) { 255 sServiceInstance = new ConnectivityService(context); 256 } 257 return sServiceInstance; 258 } 259 260 private ConnectivityService(Context context) { 261 if (DBG) log("ConnectivityService starting up"); 262 263 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 264 handlerThread.start(); 265 mHandler = new MyHandler(handlerThread.getLooper()); 266 267 mBackgroundDataEnabled.set(Settings.Secure.getInt(context.getContentResolver(), 268 Settings.Secure.BACKGROUND_DATA, 1) == 1); 269 270 // setup our unique device name 271 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 272 String id = Settings.Secure.getString(context.getContentResolver(), 273 Settings.Secure.ANDROID_ID); 274 if (id != null && id.length() > 0) { 275 String name = new String("android_").concat(id); 276 SystemProperties.set("net.hostname", name); 277 } 278 } 279 280 // read our default dns server ip 281 String dns = Settings.Secure.getString(context.getContentResolver(), 282 Settings.Secure.DEFAULT_DNS_SERVER); 283 if (dns == null || dns.length() == 0) { 284 dns = context.getResources().getString( 285 com.android.internal.R.string.config_default_dns_server); 286 } 287 try { 288 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 289 } catch (IllegalArgumentException e) { 290 loge("Error setting defaultDns using " + dns); 291 } 292 293 mContext = context; 294 295 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 296 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 297 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 298 com.android.internal.R.integer.config_networkTransitionTimeout); 299 300 mNetTrackers = new NetworkStateTracker[ 301 ConnectivityManager.MAX_NETWORK_TYPE+1]; 302 303 mNetworkPreference = getPersistedNetworkPreference(); 304 305 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 306 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 307 308 // Load device network attributes from resources 309 String[] raStrings = context.getResources().getStringArray( 310 com.android.internal.R.array.radioAttributes); 311 for (String raString : raStrings) { 312 RadioAttributes r = new RadioAttributes(raString); 313 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 314 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 315 continue; 316 } 317 if (mRadioAttributes[r.mType] != null) { 318 loge("Error in radioAttributes - ignoring attempt to redefine type " + 319 r.mType); 320 continue; 321 } 322 mRadioAttributes[r.mType] = r; 323 } 324 325 String[] naStrings = context.getResources().getStringArray( 326 com.android.internal.R.array.networkAttributes); 327 for (String naString : naStrings) { 328 try { 329 NetworkConfig n = new NetworkConfig(naString); 330 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 331 loge("Error in networkAttributes - ignoring attempt to define type " + 332 n.type); 333 continue; 334 } 335 if (mNetConfigs[n.type] != null) { 336 loge("Error in networkAttributes - ignoring attempt to redefine type " + 337 n.type); 338 continue; 339 } 340 if (mRadioAttributes[n.radio] == null) { 341 loge("Error in networkAttributes - ignoring attempt to use undefined " + 342 "radio " + n.radio + " in network type " + n.type); 343 continue; 344 } 345 mNetConfigs[n.type] = n; 346 mNetworksDefined++; 347 } catch(Exception e) { 348 // ignore it - leave the entry null 349 } 350 } 351 352 // high priority first 353 mPriorityList = new int[mNetworksDefined]; 354 { 355 int insertionPoint = mNetworksDefined-1; 356 int currentLowest = 0; 357 int nextLowest = 0; 358 while (insertionPoint > -1) { 359 for (NetworkConfig na : mNetConfigs) { 360 if (na == null) continue; 361 if (na.priority < currentLowest) continue; 362 if (na.priority > currentLowest) { 363 if (na.priority < nextLowest || nextLowest == 0) { 364 nextLowest = na.priority; 365 } 366 continue; 367 } 368 mPriorityList[insertionPoint--] = na.type; 369 } 370 currentLowest = nextLowest; 371 nextLowest = 0; 372 } 373 } 374 375 mNetRequestersPids = new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 376 for (int i : mPriorityList) { 377 mNetRequestersPids[i] = new ArrayList(); 378 } 379 380 mFeatureUsers = new ArrayList(); 381 382 mNumDnsEntries = 0; 383 384 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 385 && SystemProperties.get("ro.build.type").equals("eng"); 386 /* 387 * Create the network state trackers for Wi-Fi and mobile 388 * data. Maybe this could be done with a factory class, 389 * but it's not clear that it's worth it, given that 390 * the number of different network types is not going 391 * to change very often. 392 */ 393 for (int netType : mPriorityList) { 394 switch (mNetConfigs[netType].radio) { 395 case ConnectivityManager.TYPE_WIFI: 396 if (DBG) log("Starting Wifi Service."); 397 WifiStateTracker wst = new WifiStateTracker(); 398 WifiService wifiService = new WifiService(context); 399 ServiceManager.addService(Context.WIFI_SERVICE, wifiService); 400 wifiService.checkAndStartWifi(); 401 mNetTrackers[ConnectivityManager.TYPE_WIFI] = wst; 402 wst.startMonitoring(context, mHandler); 403 404 //TODO: as part of WWS refactor, create only when needed 405 mWifiWatchdogService = new WifiWatchdogService(context); 406 407 break; 408 case ConnectivityManager.TYPE_MOBILE: 409 mNetTrackers[netType] = new MobileDataStateTracker(netType, 410 mNetConfigs[netType].name); 411 mNetTrackers[netType].startMonitoring(context, mHandler); 412 break; 413 case ConnectivityManager.TYPE_DUMMY: 414 mNetTrackers[netType] = new DummyDataStateTracker(netType, 415 mNetConfigs[netType].name); 416 mNetTrackers[netType].startMonitoring(context, mHandler); 417 break; 418 case ConnectivityManager.TYPE_BLUETOOTH: 419 mNetTrackers[netType] = BluetoothTetheringDataTracker.getInstance(); 420 mNetTrackers[netType].startMonitoring(context, mHandler); 421 break; 422 case ConnectivityManager.TYPE_ETHERNET: 423 mNetTrackers[netType] = EthernetDataTracker.getInstance(); 424 mNetTrackers[netType].startMonitoring(context, mHandler); 425 break; 426 default: 427 loge("Trying to create a DataStateTracker for an unknown radio type " + 428 mNetConfigs[netType].radio); 429 continue; 430 } 431 } 432 433 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 434 INetworkManagementService nmService = INetworkManagementService.Stub.asInterface(b); 435 436 mTethering = new Tethering(mContext, nmService, mHandler.getLooper()); 437 mTetheringConfigValid = (((mNetTrackers[ConnectivityManager.TYPE_MOBILE_DUN] != null) || 438 !mTethering.isDunRequired()) && 439 (mTethering.getTetherableUsbRegexs().length != 0 || 440 mTethering.getTetherableWifiRegexs().length != 0 || 441 mTethering.getTetherableBluetoothRegexs().length != 0) && 442 mTethering.getUpstreamIfaceRegexs().length != 0); 443 444 if (DBG) { 445 mInetLog = new ArrayList(); 446 } 447 448 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 449 mSettingsObserver.observe(mContext); 450 451 loadGlobalProxy(); 452 453 VpnManager.startVpnService(context); 454 } 455 456 457 /** 458 * Sets the preferred network. 459 * @param preference the new preference 460 */ 461 public void setNetworkPreference(int preference) { 462 enforceChangePermission(); 463 464 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_NETWORK_PREFERENCE, preference, 0)); 465 } 466 467 public int getNetworkPreference() { 468 enforceAccessPermission(); 469 int preference; 470 synchronized(this) { 471 preference = mNetworkPreference; 472 } 473 return preference; 474 } 475 476 private void handleSetNetworkPreference(int preference) { 477 if (ConnectivityManager.isNetworkTypeValid(preference) && 478 mNetConfigs[preference] != null && 479 mNetConfigs[preference].isDefault()) { 480 if (mNetworkPreference != preference) { 481 final ContentResolver cr = mContext.getContentResolver(); 482 Settings.Secure.putInt(cr, Settings.Secure.NETWORK_PREFERENCE, preference); 483 synchronized(this) { 484 mNetworkPreference = preference; 485 } 486 enforcePreference(); 487 } 488 } 489 } 490 491 private int getPersistedNetworkPreference() { 492 final ContentResolver cr = mContext.getContentResolver(); 493 494 final int networkPrefSetting = Settings.Secure 495 .getInt(cr, Settings.Secure.NETWORK_PREFERENCE, -1); 496 if (networkPrefSetting != -1) { 497 return networkPrefSetting; 498 } 499 500 return ConnectivityManager.DEFAULT_NETWORK_PREFERENCE; 501 } 502 503 /** 504 * Make the state of network connectivity conform to the preference settings 505 * In this method, we only tear down a non-preferred network. Establishing 506 * a connection to the preferred network is taken care of when we handle 507 * the disconnect event from the non-preferred network 508 * (see {@link #handleDisconnect(NetworkInfo)}). 509 */ 510 private void enforcePreference() { 511 if (mNetTrackers[mNetworkPreference].getNetworkInfo().isConnected()) 512 return; 513 514 if (!mNetTrackers[mNetworkPreference].isAvailable()) 515 return; 516 517 for (int t=0; t <= ConnectivityManager.MAX_RADIO_TYPE; t++) { 518 if (t != mNetworkPreference && mNetTrackers[t] != null && 519 mNetTrackers[t].getNetworkInfo().isConnected()) { 520 if (DBG) { 521 log("tearing down " + mNetTrackers[t].getNetworkInfo() + 522 " in enforcePreference"); 523 } 524 teardown(mNetTrackers[t]); 525 } 526 } 527 } 528 529 private boolean teardown(NetworkStateTracker netTracker) { 530 if (netTracker.teardown()) { 531 netTracker.setTeardownRequested(true); 532 return true; 533 } else { 534 return false; 535 } 536 } 537 538 /** 539 * Return NetworkInfo for the active (i.e., connected) network interface. 540 * It is assumed that at most one network is active at a time. If more 541 * than one is active, it is indeterminate which will be returned. 542 * @return the info for the active network, or {@code null} if none is 543 * active 544 */ 545 public NetworkInfo getActiveNetworkInfo() { 546 enforceAccessPermission(); 547 if (mActiveDefaultNetwork != -1) { 548 return mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 549 } 550 return null; 551 } 552 553 public NetworkInfo getNetworkInfo(int networkType) { 554 enforceAccessPermission(); 555 if (ConnectivityManager.isNetworkTypeValid(networkType)) { 556 NetworkStateTracker t = mNetTrackers[networkType]; 557 if (t != null) 558 return t.getNetworkInfo(); 559 } 560 return null; 561 } 562 563 public NetworkInfo[] getAllNetworkInfo() { 564 enforceAccessPermission(); 565 NetworkInfo[] result = new NetworkInfo[mNetworksDefined]; 566 int i = 0; 567 for (NetworkStateTracker t : mNetTrackers) { 568 if(t != null) result[i++] = t.getNetworkInfo(); 569 } 570 return result; 571 } 572 573 /** 574 * Return LinkProperties for the active (i.e., connected) default 575 * network interface. It is assumed that at most one default network 576 * is active at a time. If more than one is active, it is indeterminate 577 * which will be returned. 578 * @return the ip properties for the active network, or {@code null} if 579 * none is active 580 */ 581 public LinkProperties getActiveLinkProperties() { 582 enforceAccessPermission(); 583 for (int type=0; type <= ConnectivityManager.MAX_NETWORK_TYPE; type++) { 584 if (mNetConfigs[type] == null || !mNetConfigs[type].isDefault()) { 585 continue; 586 } 587 NetworkStateTracker t = mNetTrackers[type]; 588 NetworkInfo info = t.getNetworkInfo(); 589 if (info.isConnected()) { 590 return t.getLinkProperties(); 591 } 592 } 593 return null; 594 } 595 596 public LinkProperties getLinkProperties(int networkType) { 597 enforceAccessPermission(); 598 if (ConnectivityManager.isNetworkTypeValid(networkType)) { 599 NetworkStateTracker t = mNetTrackers[networkType]; 600 if (t != null) return t.getLinkProperties(); 601 } 602 return null; 603 } 604 605 public boolean setRadios(boolean turnOn) { 606 boolean result = true; 607 enforceChangePermission(); 608 for (NetworkStateTracker t : mNetTrackers) { 609 if (t != null) result = t.setRadio(turnOn) && result; 610 } 611 return result; 612 } 613 614 public boolean setRadio(int netType, boolean turnOn) { 615 enforceChangePermission(); 616 if (!ConnectivityManager.isNetworkTypeValid(netType)) { 617 return false; 618 } 619 NetworkStateTracker tracker = mNetTrackers[netType]; 620 return tracker != null && tracker.setRadio(turnOn); 621 } 622 623 /** 624 * Used to notice when the calling process dies so we can self-expire 625 * 626 * Also used to know if the process has cleaned up after itself when 627 * our auto-expire timer goes off. The timer has a link to an object. 628 * 629 */ 630 private class FeatureUser implements IBinder.DeathRecipient { 631 int mNetworkType; 632 String mFeature; 633 IBinder mBinder; 634 int mPid; 635 int mUid; 636 long mCreateTime; 637 638 FeatureUser(int type, String feature, IBinder binder) { 639 super(); 640 mNetworkType = type; 641 mFeature = feature; 642 mBinder = binder; 643 mPid = getCallingPid(); 644 mUid = getCallingUid(); 645 mCreateTime = System.currentTimeMillis(); 646 647 try { 648 mBinder.linkToDeath(this, 0); 649 } catch (RemoteException e) { 650 binderDied(); 651 } 652 } 653 654 void unlinkDeathRecipient() { 655 mBinder.unlinkToDeath(this, 0); 656 } 657 658 public void binderDied() { 659 log("ConnectivityService FeatureUser binderDied(" + 660 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 661 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 662 stopUsingNetworkFeature(this, false); 663 } 664 665 public void expire() { 666 log("ConnectivityService FeatureUser expire(" + 667 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 668 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 669 stopUsingNetworkFeature(this, false); 670 } 671 672 public String toString() { 673 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 674 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 675 } 676 } 677 678 // javadoc from interface 679 public int startUsingNetworkFeature(int networkType, String feature, 680 IBinder binder) { 681 if (DBG) { 682 log("startUsingNetworkFeature for net " + networkType + ": " + feature); 683 } 684 enforceChangePermission(); 685 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 686 mNetConfigs[networkType] == null) { 687 return Phone.APN_REQUEST_FAILED; 688 } 689 690 FeatureUser f = new FeatureUser(networkType, feature, binder); 691 692 // TODO - move this into the MobileDataStateTracker 693 int usedNetworkType = networkType; 694 if(networkType == ConnectivityManager.TYPE_MOBILE) { 695 usedNetworkType = convertFeatureToNetworkType(feature); 696 if (usedNetworkType < 0) { 697 Slog.e(TAG, "Can't match any netTracker!"); 698 usedNetworkType = networkType; 699 } 700 } 701 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 702 if (network != null) { 703 Integer currentPid = new Integer(getCallingPid()); 704 if (usedNetworkType != networkType) { 705 NetworkStateTracker radio = mNetTrackers[networkType]; 706 NetworkInfo ni = network.getNetworkInfo(); 707 708 if (ni.isAvailable() == false) { 709 if (DBG) log("special network not available"); 710 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 711 return Phone.APN_TYPE_NOT_AVAILABLE; 712 } else { 713 // else make the attempt anyway - probably giving REQUEST_STARTED below 714 } 715 } 716 717 synchronized(this) { 718 mFeatureUsers.add(f); 719 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 720 // this gets used for per-pid dns when connected 721 mNetRequestersPids[usedNetworkType].add(currentPid); 722 } 723 } 724 725 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 726 727 if (restoreTimer >= 0) { 728 mHandler.sendMessageDelayed( 729 mHandler.obtainMessage(EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 730 } 731 732 if ((ni.isConnectedOrConnecting() == true) && 733 !network.isTeardownRequested()) { 734 if (ni.isConnected() == true) { 735 // add the pid-specific dns 736 handleDnsConfigurationChange(networkType); 737 if (DBG) log("special network already active"); 738 return Phone.APN_ALREADY_ACTIVE; 739 } 740 if (DBG) log("special network already connecting"); 741 return Phone.APN_REQUEST_STARTED; 742 } 743 744 // check if the radio in play can make another contact 745 // assume if cannot for now 746 747 if (DBG) log("reconnecting to special network"); 748 network.reconnect(); 749 return Phone.APN_REQUEST_STARTED; 750 } else { 751 // need to remember this unsupported request so we respond appropriately on stop 752 synchronized(this) { 753 mFeatureUsers.add(f); 754 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 755 // this gets used for per-pid dns when connected 756 mNetRequestersPids[usedNetworkType].add(currentPid); 757 } 758 } 759 return -1; 760 } 761 } 762 return Phone.APN_TYPE_NOT_AVAILABLE; 763 } 764 765 // javadoc from interface 766 public int stopUsingNetworkFeature(int networkType, String feature) { 767 enforceChangePermission(); 768 769 int pid = getCallingPid(); 770 int uid = getCallingUid(); 771 772 FeatureUser u = null; 773 boolean found = false; 774 775 synchronized(this) { 776 for (int i = 0; i < mFeatureUsers.size() ; i++) { 777 u = (FeatureUser)mFeatureUsers.get(i); 778 if (uid == u.mUid && pid == u.mPid && 779 networkType == u.mNetworkType && 780 TextUtils.equals(feature, u.mFeature)) { 781 found = true; 782 break; 783 } 784 } 785 } 786 if (found && u != null) { 787 // stop regardless of how many other time this proc had called start 788 return stopUsingNetworkFeature(u, true); 789 } else { 790 // none found! 791 if (DBG) log("ignoring stopUsingNetworkFeature - not a live request"); 792 return 1; 793 } 794 } 795 796 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 797 int networkType = u.mNetworkType; 798 String feature = u.mFeature; 799 int pid = u.mPid; 800 int uid = u.mUid; 801 802 NetworkStateTracker tracker = null; 803 boolean callTeardown = false; // used to carry our decision outside of sync block 804 805 if (DBG) { 806 log("stopUsingNetworkFeature for net " + networkType + 807 ": " + feature); 808 } 809 810 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 811 return -1; 812 } 813 814 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 815 // sync block 816 synchronized(this) { 817 // check if this process still has an outstanding start request 818 if (!mFeatureUsers.contains(u)) { 819 if (DBG) log("ignoring - this process has no outstanding requests"); 820 return 1; 821 } 822 u.unlinkDeathRecipient(); 823 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 824 // If we care about duplicate requests, check for that here. 825 // 826 // This is done to support the extension of a request - the app 827 // can request we start the network feature again and renew the 828 // auto-shutoff delay. Normal "stop" calls from the app though 829 // do not pay attention to duplicate requests - in effect the 830 // API does not refcount and a single stop will counter multiple starts. 831 if (ignoreDups == false) { 832 for (int i = 0; i < mFeatureUsers.size() ; i++) { 833 FeatureUser x = (FeatureUser)mFeatureUsers.get(i); 834 if (x.mUid == u.mUid && x.mPid == u.mPid && 835 x.mNetworkType == u.mNetworkType && 836 TextUtils.equals(x.mFeature, u.mFeature)) { 837 if (DBG) log("ignoring stopUsingNetworkFeature as dup is found"); 838 return 1; 839 } 840 } 841 } 842 843 // TODO - move to MobileDataStateTracker 844 int usedNetworkType = networkType; 845 if (networkType == ConnectivityManager.TYPE_MOBILE) { 846 usedNetworkType = convertFeatureToNetworkType(feature); 847 if (usedNetworkType < 0) { 848 usedNetworkType = networkType; 849 } 850 } 851 tracker = mNetTrackers[usedNetworkType]; 852 if (tracker == null) { 853 if (DBG) log("ignoring - no known tracker for net type " + usedNetworkType); 854 return -1; 855 } 856 if (usedNetworkType != networkType) { 857 Integer currentPid = new Integer(pid); 858 mNetRequestersPids[usedNetworkType].remove(currentPid); 859 reassessPidDns(pid, true); 860 if (mNetRequestersPids[usedNetworkType].size() != 0) { 861 if (DBG) log("not tearing down special network - " + 862 "others still using it"); 863 return 1; 864 } 865 callTeardown = true; 866 } else { 867 if (DBG) log("not a known feature - dropping"); 868 } 869 } 870 if (DBG) log("Doing network teardown"); 871 if (callTeardown) { 872 tracker.teardown(); 873 return 1; 874 } else { 875 return -1; 876 } 877 } 878 879 /** 880 * @deprecated use requestRouteToHostAddress instead 881 * 882 * Ensure that a network route exists to deliver traffic to the specified 883 * host via the specified network interface. 884 * @param networkType the type of the network over which traffic to the 885 * specified host is to be routed 886 * @param hostAddress the IP address of the host to which the route is 887 * desired 888 * @return {@code true} on success, {@code false} on failure 889 */ 890 public boolean requestRouteToHost(int networkType, int hostAddress) { 891 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 892 893 if (inetAddress == null) { 894 return false; 895 } 896 897 return requestRouteToHostAddress(networkType, inetAddress.getAddress()); 898 } 899 900 /** 901 * Ensure that a network route exists to deliver traffic to the specified 902 * host via the specified network interface. 903 * @param networkType the type of the network over which traffic to the 904 * specified host is to be routed 905 * @param hostAddress the IP address of the host to which the route is 906 * desired 907 * @return {@code true} on success, {@code false} on failure 908 */ 909 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 910 enforceChangePermission(); 911 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 912 return false; 913 } 914 NetworkStateTracker tracker = mNetTrackers[networkType]; 915 916 if (tracker == null || !tracker.getNetworkInfo().isConnected() || 917 tracker.isTeardownRequested()) { 918 if (DBG) { 919 log("requestRouteToHostAddress on down network " + 920 "(" + networkType + ") - dropped"); 921 } 922 return false; 923 } 924 try { 925 InetAddress addr = InetAddress.getByAddress(hostAddress); 926 return addHostRoute(tracker, addr, 0); 927 } catch (UnknownHostException e) {} 928 return false; 929 } 930 931 /** 932 * Ensure that a network route exists to deliver traffic to the specified 933 * host via the mobile data network. 934 * @param hostAddress the IP address of the host to which the route is desired, 935 * in network byte order. 936 * TODO - deprecate 937 * @return {@code true} on success, {@code false} on failure 938 */ 939 private boolean addHostRoute(NetworkStateTracker nt, InetAddress hostAddress, int cycleCount) { 940 LinkProperties lp = nt.getLinkProperties(); 941 if ((lp == null) || (hostAddress == null)) return false; 942 943 String interfaceName = lp.getInterfaceName(); 944 if (DBG) { 945 log("Requested host route to " + hostAddress + "(" + interfaceName + "), cycleCount=" + 946 cycleCount); 947 } 948 if (interfaceName == null) { 949 if (DBG) loge("addHostRoute failed due to null interface name"); 950 return false; 951 } 952 953 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getRoutes(), hostAddress); 954 InetAddress gatewayAddress = null; 955 if (bestRoute != null) { 956 gatewayAddress = bestRoute.getGateway(); 957 // if the best route is ourself, don't relf-reference, just add the host route 958 if (hostAddress.equals(gatewayAddress)) gatewayAddress = null; 959 } 960 if (gatewayAddress != null) { 961 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 962 loge("Error adding hostroute - too much recursion"); 963 return false; 964 } 965 if (!addHostRoute(nt, gatewayAddress, cycleCount+1)) return false; 966 } 967 968 RouteInfo route = RouteInfo.makeHostRoute(hostAddress, gatewayAddress); 969 970 try { 971 mNetd.addRoute(interfaceName, route); 972 return true; 973 } catch (Exception ex) { 974 return false; 975 } 976 } 977 978 // TODO support the removal of single host routes. Keep a ref count of them so we 979 // aren't over-zealous 980 private boolean removeHostRoute(NetworkStateTracker nt, InetAddress hostAddress) { 981 return false; 982 } 983 984 /** 985 * @see ConnectivityManager#getBackgroundDataSetting() 986 */ 987 public boolean getBackgroundDataSetting() { 988 return mBackgroundDataEnabled.get(); 989 } 990 991 /** 992 * @see ConnectivityManager#setBackgroundDataSetting(boolean) 993 */ 994 public void setBackgroundDataSetting(boolean allowBackgroundDataUsage) { 995 mContext.enforceCallingOrSelfPermission( 996 android.Manifest.permission.CHANGE_BACKGROUND_DATA_SETTING, 997 "ConnectivityService"); 998 999 mBackgroundDataEnabled.set(allowBackgroundDataUsage); 1000 1001 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_BACKGROUND_DATA, 1002 (allowBackgroundDataUsage ? ENABLED : DISABLED), 0)); 1003 } 1004 1005 private void handleSetBackgroundData(boolean enabled) { 1006 Settings.Secure.putInt(mContext.getContentResolver(), 1007 Settings.Secure.BACKGROUND_DATA, enabled ? 1 : 0); 1008 Intent broadcast = new Intent( 1009 ConnectivityManager.ACTION_BACKGROUND_DATA_SETTING_CHANGED); 1010 mContext.sendBroadcast(broadcast); 1011 } 1012 1013 /** 1014 * @see ConnectivityManager#getMobileDataEnabled() 1015 */ 1016 public boolean getMobileDataEnabled() { 1017 // TODO: This detail should probably be in DataConnectionTracker's 1018 // which is where we store the value and maybe make this 1019 // asynchronous. 1020 enforceAccessPermission(); 1021 boolean retVal = Settings.Secure.getInt(mContext.getContentResolver(), 1022 Settings.Secure.MOBILE_DATA, 1) == 1; 1023 if (DBG) log("getMobileDataEnabled returning " + retVal); 1024 return retVal; 1025 } 1026 1027 public void setDataDependency(int networkType, boolean met) { 1028 enforceChangePermission(); 1029 if (DBG) { 1030 log("setDataDependency(" + networkType + ", " + met + ")"); 1031 } 1032 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1033 (met ? ENABLED : DISABLED), networkType)); 1034 } 1035 1036 private void handleSetDependencyMet(int networkType, boolean met) { 1037 if (mNetTrackers[networkType] != null) { 1038 if (DBG) { 1039 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1040 } 1041 mNetTrackers[networkType].setDependencyMet(met); 1042 } 1043 } 1044 1045 /** 1046 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1047 */ 1048 public void setMobileDataEnabled(boolean enabled) { 1049 enforceChangePermission(); 1050 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1051 1052 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1053 (enabled ? ENABLED : DISABLED), 0)); 1054 } 1055 1056 private void handleSetMobileData(boolean enabled) { 1057 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1058 if (DBG) { 1059 Slog.d(TAG, mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1060 } 1061 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setDataEnable(enabled); 1062 } 1063 } 1064 1065 private void enforceAccessPermission() { 1066 mContext.enforceCallingOrSelfPermission( 1067 android.Manifest.permission.ACCESS_NETWORK_STATE, 1068 "ConnectivityService"); 1069 } 1070 1071 private void enforceChangePermission() { 1072 mContext.enforceCallingOrSelfPermission( 1073 android.Manifest.permission.CHANGE_NETWORK_STATE, 1074 "ConnectivityService"); 1075 } 1076 1077 // TODO Make this a special check when it goes public 1078 private void enforceTetherChangePermission() { 1079 mContext.enforceCallingOrSelfPermission( 1080 android.Manifest.permission.CHANGE_NETWORK_STATE, 1081 "ConnectivityService"); 1082 } 1083 1084 private void enforceTetherAccessPermission() { 1085 mContext.enforceCallingOrSelfPermission( 1086 android.Manifest.permission.ACCESS_NETWORK_STATE, 1087 "ConnectivityService"); 1088 } 1089 1090 private void enforceConnectivityInternalPermission() { 1091 mContext.enforceCallingOrSelfPermission( 1092 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1093 "ConnectivityService"); 1094 } 1095 1096 /** 1097 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1098 * network, we ignore it. If it is for the active network, we send out a 1099 * broadcast. But first, we check whether it might be possible to connect 1100 * to a different network. 1101 * @param info the {@code NetworkInfo} for the network 1102 */ 1103 private void handleDisconnect(NetworkInfo info) { 1104 1105 int prevNetType = info.getType(); 1106 1107 mNetTrackers[prevNetType].setTeardownRequested(false); 1108 /* 1109 * If the disconnected network is not the active one, then don't report 1110 * this as a loss of connectivity. What probably happened is that we're 1111 * getting the disconnect for a network that we explicitly disabled 1112 * in accordance with network preference policies. 1113 */ 1114 if (!mNetConfigs[prevNetType].isDefault()) { 1115 List pids = mNetRequestersPids[prevNetType]; 1116 for (int i = 0; i<pids.size(); i++) { 1117 Integer pid = (Integer)pids.get(i); 1118 // will remove them because the net's no longer connected 1119 // need to do this now as only now do we know the pids and 1120 // can properly null things that are no longer referenced. 1121 reassessPidDns(pid.intValue(), false); 1122 } 1123 } 1124 1125 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 1126 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 1127 if (info.isFailover()) { 1128 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1129 info.setFailover(false); 1130 } 1131 if (info.getReason() != null) { 1132 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1133 } 1134 if (info.getExtraInfo() != null) { 1135 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1136 info.getExtraInfo()); 1137 } 1138 1139 if (mNetConfigs[prevNetType].isDefault()) { 1140 tryFailover(prevNetType); 1141 if (mActiveDefaultNetwork != -1) { 1142 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 1143 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 1144 } else { 1145 mDefaultInetConditionPublished = 0; // we're not connected anymore 1146 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 1147 } 1148 } 1149 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1150 // do this before we broadcast the change 1151 handleConnectivityChange(prevNetType); 1152 1153 sendStickyBroadcast(intent); 1154 /* 1155 * If the failover network is already connected, then immediately send 1156 * out a followup broadcast indicating successful failover 1157 */ 1158 if (mActiveDefaultNetwork != -1) { 1159 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 1160 } 1161 } 1162 1163 private void tryFailover(int prevNetType) { 1164 /* 1165 * If this is a default network, check if other defaults are available. 1166 * Try to reconnect on all available and let them hash it out when 1167 * more than one connects. 1168 */ 1169 if (mNetConfigs[prevNetType].isDefault()) { 1170 if (mActiveDefaultNetwork == prevNetType) { 1171 mActiveDefaultNetwork = -1; 1172 } 1173 1174 // don't signal a reconnect for anything lower or equal priority than our 1175 // current connected default 1176 // TODO - don't filter by priority now - nice optimization but risky 1177// int currentPriority = -1; 1178// if (mActiveDefaultNetwork != -1) { 1179// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 1180// } 1181 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 1182 if (checkType == prevNetType) continue; 1183 if (mNetConfigs[checkType] == null) continue; 1184 if (!mNetConfigs[checkType].isDefault()) continue; 1185 1186// Enabling the isAvailable() optimization caused mobile to not get 1187// selected if it was in the middle of error handling. Specifically 1188// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 1189// would not be available and we wouldn't get connected to anything. 1190// So removing the isAvailable() optimization below for now. TODO: This 1191// optimization should work and we need to investigate why it doesn't work. 1192// This could be related to how DEACTIVATE_DATA_CALL is reporting its 1193// complete before it is really complete. 1194// if (!mNetTrackers[checkType].isAvailable()) continue; 1195 1196// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 1197 1198 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 1199 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 1200 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 1201 checkInfo.setFailover(true); 1202 checkTracker.reconnect(); 1203 } 1204 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 1205 } 1206 } 1207 } 1208 1209 private void sendConnectedBroadcast(NetworkInfo info) { 1210 sendGeneralBroadcast(info, ConnectivityManager.CONNECTIVITY_ACTION); 1211 } 1212 1213 private void sendInetConditionBroadcast(NetworkInfo info) { 1214 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1215 } 1216 1217 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1218 Intent intent = new Intent(bcastType); 1219 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 1220 if (info.isFailover()) { 1221 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1222 info.setFailover(false); 1223 } 1224 if (info.getReason() != null) { 1225 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1226 } 1227 if (info.getExtraInfo() != null) { 1228 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1229 info.getExtraInfo()); 1230 } 1231 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1232 sendStickyBroadcast(intent); 1233 } 1234 1235 /** 1236 * Called when an attempt to fail over to another network has failed. 1237 * @param info the {@link NetworkInfo} for the failed network 1238 */ 1239 private void handleConnectionFailure(NetworkInfo info) { 1240 mNetTrackers[info.getType()].setTeardownRequested(false); 1241 1242 String reason = info.getReason(); 1243 String extraInfo = info.getExtraInfo(); 1244 1245 String reasonText; 1246 if (reason == null) { 1247 reasonText = "."; 1248 } else { 1249 reasonText = " (" + reason + ")."; 1250 } 1251 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 1252 1253 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 1254 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 1255 if (getActiveNetworkInfo() == null) { 1256 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 1257 } 1258 if (reason != null) { 1259 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 1260 } 1261 if (extraInfo != null) { 1262 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 1263 } 1264 if (info.isFailover()) { 1265 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1266 info.setFailover(false); 1267 } 1268 1269 if (mNetConfigs[info.getType()].isDefault()) { 1270 tryFailover(info.getType()); 1271 if (mActiveDefaultNetwork != -1) { 1272 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 1273 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 1274 } else { 1275 mDefaultInetConditionPublished = 0; 1276 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 1277 } 1278 } 1279 1280 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1281 sendStickyBroadcast(intent); 1282 /* 1283 * If the failover network is already connected, then immediately send 1284 * out a followup broadcast indicating successful failover 1285 */ 1286 if (mActiveDefaultNetwork != -1) { 1287 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 1288 } 1289 } 1290 1291 private void sendStickyBroadcast(Intent intent) { 1292 synchronized(this) { 1293 if (!mSystemReady) { 1294 mInitialBroadcast = new Intent(intent); 1295 } 1296 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1297 mContext.sendStickyBroadcast(intent); 1298 } 1299 } 1300 1301 void systemReady() { 1302 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1303 mNetd = INetworkManagementService.Stub.asInterface(b); 1304 1305 synchronized(this) { 1306 mSystemReady = true; 1307 if (mInitialBroadcast != null) { 1308 mContext.sendStickyBroadcast(mInitialBroadcast); 1309 mInitialBroadcast = null; 1310 } 1311 } 1312 // load the global proxy at startup 1313 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1314 } 1315 1316 private void handleConnect(NetworkInfo info) { 1317 int type = info.getType(); 1318 1319 // snapshot isFailover, because sendConnectedBroadcast() resets it 1320 boolean isFailover = info.isFailover(); 1321 NetworkStateTracker thisNet = mNetTrackers[type]; 1322 1323 // if this is a default net and other default is running 1324 // kill the one not preferred 1325 if (mNetConfigs[type].isDefault()) { 1326 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != type) { 1327 if ((type != mNetworkPreference && 1328 mNetConfigs[mActiveDefaultNetwork].priority > 1329 mNetConfigs[type].priority) || 1330 mNetworkPreference == mActiveDefaultNetwork) { 1331 // don't accept this one 1332 if (DBG) { 1333 log("Not broadcasting CONNECT_ACTION " + 1334 "to torn down network " + info.getTypeName()); 1335 } 1336 teardown(thisNet); 1337 return; 1338 } else { 1339 // tear down the other 1340 NetworkStateTracker otherNet = 1341 mNetTrackers[mActiveDefaultNetwork]; 1342 if (DBG) { 1343 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 1344 " teardown"); 1345 } 1346 if (!teardown(otherNet)) { 1347 loge("Network declined teardown request"); 1348 teardown(thisNet); 1349 return; 1350 } 1351 } 1352 } 1353 synchronized (ConnectivityService.this) { 1354 // have a new default network, release the transition wakelock in a second 1355 // if it's held. The second pause is to allow apps to reconnect over the 1356 // new network 1357 if (mNetTransitionWakeLock.isHeld()) { 1358 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1359 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 1360 mNetTransitionWakeLockSerialNumber, 0), 1361 1000); 1362 } 1363 } 1364 mActiveDefaultNetwork = type; 1365 // this will cause us to come up initially as unconnected and switching 1366 // to connected after our normal pause unless somebody reports us as reall 1367 // disconnected 1368 mDefaultInetConditionPublished = 0; 1369 mDefaultConnectionSequence++; 1370 mInetConditionChangeInFlight = false; 1371 // Don't do this - if we never sign in stay, grey 1372 //reportNetworkCondition(mActiveDefaultNetwork, 100); 1373 } 1374 thisNet.setTeardownRequested(false); 1375 updateNetworkSettings(thisNet); 1376 handleConnectivityChange(type); 1377 sendConnectedBroadcast(info); 1378 } 1379 1380 /** 1381 * After a change in the connectivity state of a network. We're mainly 1382 * concerned with making sure that the list of DNS servers is set up 1383 * according to which networks are connected, and ensuring that the 1384 * right routing table entries exist. 1385 */ 1386 private void handleConnectivityChange(int netType) { 1387 /* 1388 * If a non-default network is enabled, add the host routes that 1389 * will allow it's DNS servers to be accessed. 1390 */ 1391 handleDnsConfigurationChange(netType); 1392 1393 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 1394 if (mNetConfigs[netType].isDefault()) { 1395 handleApplyDefaultProxy(netType); 1396 addDefaultRoute(mNetTrackers[netType]); 1397 } else { 1398 // many radios add a default route even when we don't want one. 1399 // remove the default route unless we need it for our active network 1400 if (mActiveDefaultNetwork != -1) { 1401 LinkProperties defaultLinkProperties = 1402 mNetTrackers[mActiveDefaultNetwork].getLinkProperties(); 1403 LinkProperties newLinkProperties = 1404 mNetTrackers[netType].getLinkProperties(); 1405 String defaultIface = defaultLinkProperties.getInterfaceName(); 1406 if (defaultIface != null && 1407 !defaultIface.equals(newLinkProperties.getInterfaceName())) { 1408 removeDefaultRoute(mNetTrackers[netType]); 1409 } 1410 } 1411 addPrivateDnsRoutes(mNetTrackers[netType]); 1412 } 1413 1414 /** Notify TetheringService if interface name has been changed. */ 1415 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 1416 Phone.REASON_LINK_PROPERTIES_CHANGED)) { 1417 handleTetherIfaceChange(netType); 1418 } 1419 } else { 1420 if (mNetConfigs[netType].isDefault()) { 1421 removeDefaultRoute(mNetTrackers[netType]); 1422 } else { 1423 removePrivateDnsRoutes(mNetTrackers[netType]); 1424 } 1425 } 1426 } 1427 1428 private void addPrivateDnsRoutes(NetworkStateTracker nt) { 1429 boolean privateDnsRouteSet = nt.isPrivateDnsRouteSet(); 1430 LinkProperties p = nt.getLinkProperties(); 1431 if (p == null) return; 1432 String interfaceName = p.getInterfaceName(); 1433 1434 if (DBG) { 1435 log("addPrivateDnsRoutes for " + nt + 1436 "(" + interfaceName + ") - mPrivateDnsRouteSet = " + privateDnsRouteSet); 1437 } 1438 if (interfaceName != null && !privateDnsRouteSet) { 1439 Collection<InetAddress> dnsList = p.getDnses(); 1440 for (InetAddress dns : dnsList) { 1441 addHostRoute(nt, dns, 0); 1442 } 1443 nt.privateDnsRouteSet(true); 1444 } 1445 } 1446 1447 private void removePrivateDnsRoutes(NetworkStateTracker nt) { 1448 LinkProperties p = nt.getLinkProperties(); 1449 if (p == null) return; 1450 String interfaceName = p.getInterfaceName(); 1451 boolean privateDnsRouteSet = nt.isPrivateDnsRouteSet(); 1452 if (interfaceName != null && privateDnsRouteSet) { 1453 if (DBG) { 1454 log("removePrivateDnsRoutes for " + nt.getNetworkInfo().getTypeName() + 1455 " (" + interfaceName + ")"); 1456 } 1457 1458 Collection<InetAddress> dnsList = p.getDnses(); 1459 for (InetAddress dns : dnsList) { 1460 if (DBG) log(" removing " + dns); 1461 RouteInfo route = RouteInfo.makeHostRoute(dns); 1462 try { 1463 mNetd.removeRoute(interfaceName, route); 1464 } catch (Exception ex) { 1465 loge("error (" + ex + ") removing dns route " + route); 1466 } 1467 } 1468 nt.privateDnsRouteSet(false); 1469 } 1470 } 1471 1472 1473 private void addDefaultRoute(NetworkStateTracker nt) { 1474 LinkProperties p = nt.getLinkProperties(); 1475 if (p == null) return; 1476 String interfaceName = p.getInterfaceName(); 1477 if (TextUtils.isEmpty(interfaceName)) return; 1478 1479 for (RouteInfo route : p.getRoutes()) { 1480 //TODO - handle non-default routes 1481 if (route.isDefaultRoute()) { 1482 if (DBG) log("adding default route " + route); 1483 InetAddress gateway = route.getGateway(); 1484 if (addHostRoute(nt, gateway, 0)) { 1485 try { 1486 mNetd.addRoute(interfaceName, route); 1487 } catch (Exception e) { 1488 loge("error adding default route " + route); 1489 continue; 1490 } 1491 if (DBG) { 1492 NetworkInfo networkInfo = nt.getNetworkInfo(); 1493 log("addDefaultRoute for " + networkInfo.getTypeName() + 1494 " (" + interfaceName + "), GatewayAddr=" + 1495 gateway.getHostAddress()); 1496 } 1497 } else { 1498 loge("error adding host route for default route " + route); 1499 } 1500 } 1501 } 1502 } 1503 1504 1505 public void removeDefaultRoute(NetworkStateTracker nt) { 1506 LinkProperties p = nt.getLinkProperties(); 1507 if (p == null) return; 1508 String interfaceName = p.getInterfaceName(); 1509 1510 if (interfaceName == null) return; 1511 1512 for (RouteInfo route : p.getRoutes()) { 1513 //TODO - handle non-default routes 1514 if (route.isDefaultRoute()) { 1515 try { 1516 mNetd.removeRoute(interfaceName, route); 1517 } catch (Exception ex) { 1518 loge("error (" + ex + ") removing default route " + route); 1519 continue; 1520 } 1521 if (DBG) { 1522 NetworkInfo networkInfo = nt.getNetworkInfo(); 1523 log("removeDefaultRoute for " + networkInfo.getTypeName() + " (" + 1524 interfaceName + ")"); 1525 } 1526 } 1527 } 1528 } 1529 1530 /** 1531 * Reads the network specific TCP buffer sizes from SystemProperties 1532 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 1533 * wide use 1534 */ 1535 public void updateNetworkSettings(NetworkStateTracker nt) { 1536 String key = nt.getTcpBufferSizesPropName(); 1537 String bufferSizes = SystemProperties.get(key); 1538 1539 if (bufferSizes.length() == 0) { 1540 loge(key + " not found in system properties. Using defaults"); 1541 1542 // Setting to default values so we won't be stuck to previous values 1543 key = "net.tcp.buffersize.default"; 1544 bufferSizes = SystemProperties.get(key); 1545 } 1546 1547 // Set values in kernel 1548 if (bufferSizes.length() != 0) { 1549 if (DBG) { 1550 log("Setting TCP values: [" + bufferSizes 1551 + "] which comes from [" + key + "]"); 1552 } 1553 setBufferSize(bufferSizes); 1554 } 1555 } 1556 1557 /** 1558 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 1559 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 1560 * 1561 * @param bufferSizes in the format of "readMin, readInitial, readMax, 1562 * writeMin, writeInitial, writeMax" 1563 */ 1564 private void setBufferSize(String bufferSizes) { 1565 try { 1566 String[] values = bufferSizes.split(","); 1567 1568 if (values.length == 6) { 1569 final String prefix = "/sys/kernel/ipv4/tcp_"; 1570 stringToFile(prefix + "rmem_min", values[0]); 1571 stringToFile(prefix + "rmem_def", values[1]); 1572 stringToFile(prefix + "rmem_max", values[2]); 1573 stringToFile(prefix + "wmem_min", values[3]); 1574 stringToFile(prefix + "wmem_def", values[4]); 1575 stringToFile(prefix + "wmem_max", values[5]); 1576 } else { 1577 loge("Invalid buffersize string: " + bufferSizes); 1578 } 1579 } catch (IOException e) { 1580 loge("Can't set tcp buffer sizes:" + e); 1581 } 1582 } 1583 1584 /** 1585 * Writes string to file. Basically same as "echo -n $string > $filename" 1586 * 1587 * @param filename 1588 * @param string 1589 * @throws IOException 1590 */ 1591 private void stringToFile(String filename, String string) throws IOException { 1592 FileWriter out = new FileWriter(filename); 1593 try { 1594 out.write(string); 1595 } finally { 1596 out.close(); 1597 } 1598 } 1599 1600 1601 /** 1602 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 1603 * on the highest priority active net which this process requested. 1604 * If there aren't any, clear it out 1605 */ 1606 private void reassessPidDns(int myPid, boolean doBump) 1607 { 1608 if (DBG) log("reassessPidDns for pid " + myPid); 1609 for(int i : mPriorityList) { 1610 if (mNetConfigs[i].isDefault()) { 1611 continue; 1612 } 1613 NetworkStateTracker nt = mNetTrackers[i]; 1614 if (nt.getNetworkInfo().isConnected() && 1615 !nt.isTeardownRequested()) { 1616 LinkProperties p = nt.getLinkProperties(); 1617 if (p == null) continue; 1618 List pids = mNetRequestersPids[i]; 1619 for (int j=0; j<pids.size(); j++) { 1620 Integer pid = (Integer)pids.get(j); 1621 if (pid.intValue() == myPid) { 1622 Collection<InetAddress> dnses = p.getDnses(); 1623 writePidDns(dnses, myPid); 1624 if (doBump) { 1625 bumpDns(); 1626 } 1627 return; 1628 } 1629 } 1630 } 1631 } 1632 // nothing found - delete 1633 for (int i = 1; ; i++) { 1634 String prop = "net.dns" + i + "." + myPid; 1635 if (SystemProperties.get(prop).length() == 0) { 1636 if (doBump) { 1637 bumpDns(); 1638 } 1639 return; 1640 } 1641 SystemProperties.set(prop, ""); 1642 } 1643 } 1644 1645 // return true if results in a change 1646 private boolean writePidDns(Collection <InetAddress> dnses, int pid) { 1647 int j = 1; 1648 boolean changed = false; 1649 for (InetAddress dns : dnses) { 1650 String dnsString = dns.getHostAddress(); 1651 if (changed || !dnsString.equals(SystemProperties.get("net.dns" + j + "." + pid))) { 1652 changed = true; 1653 SystemProperties.set("net.dns" + j++ + "." + pid, dns.getHostAddress()); 1654 } 1655 } 1656 return changed; 1657 } 1658 1659 private void bumpDns() { 1660 /* 1661 * Bump the property that tells the name resolver library to reread 1662 * the DNS server list from the properties. 1663 */ 1664 String propVal = SystemProperties.get("net.dnschange"); 1665 int n = 0; 1666 if (propVal.length() != 0) { 1667 try { 1668 n = Integer.parseInt(propVal); 1669 } catch (NumberFormatException e) {} 1670 } 1671 SystemProperties.set("net.dnschange", "" + (n+1)); 1672 /* 1673 * Tell the VMs to toss their DNS caches 1674 */ 1675 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1676 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1677 /* 1678 * Connectivity events can happen before boot has completed ... 1679 */ 1680 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1681 mContext.sendBroadcast(intent); 1682 } 1683 1684 private void handleDnsConfigurationChange(int netType) { 1685 // add default net's dns entries 1686 NetworkStateTracker nt = mNetTrackers[netType]; 1687 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 1688 LinkProperties p = nt.getLinkProperties(); 1689 if (p == null) return; 1690 Collection<InetAddress> dnses = p.getDnses(); 1691 boolean changed = false; 1692 if (mNetConfigs[netType].isDefault()) { 1693 int j = 1; 1694 if (dnses.size() == 0 && mDefaultDns != null) { 1695 String dnsString = mDefaultDns.getHostAddress(); 1696 if (!dnsString.equals(SystemProperties.get("net.dns1"))) { 1697 if (DBG) { 1698 log("no dns provided - using " + dnsString); 1699 } 1700 changed = true; 1701 SystemProperties.set("net.dns1", dnsString); 1702 } 1703 j++; 1704 } else { 1705 for (InetAddress dns : dnses) { 1706 String dnsString = dns.getHostAddress(); 1707 if (!changed && dnsString.equals(SystemProperties.get("net.dns" + j))) { 1708 j++; 1709 continue; 1710 } 1711 if (DBG) { 1712 log("adding dns " + dns + " for " + 1713 nt.getNetworkInfo().getTypeName()); 1714 } 1715 changed = true; 1716 SystemProperties.set("net.dns" + j++, dnsString); 1717 } 1718 } 1719 for (int k=j ; k<mNumDnsEntries; k++) { 1720 if (changed || !TextUtils.isEmpty(SystemProperties.get("net.dns" + k))) { 1721 if (DBG) log("erasing net.dns" + k); 1722 changed = true; 1723 SystemProperties.set("net.dns" + k, ""); 1724 } 1725 } 1726 mNumDnsEntries = j; 1727 } else { 1728 // set per-pid dns for attached secondary nets 1729 List pids = mNetRequestersPids[netType]; 1730 for (int y=0; y< pids.size(); y++) { 1731 Integer pid = (Integer)pids.get(y); 1732 changed = writePidDns(dnses, pid.intValue()); 1733 } 1734 } 1735 if (changed) bumpDns(); 1736 } 1737 } 1738 1739 private int getRestoreDefaultNetworkDelay(int networkType) { 1740 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1741 NETWORK_RESTORE_DELAY_PROP_NAME); 1742 if(restoreDefaultNetworkDelayStr != null && 1743 restoreDefaultNetworkDelayStr.length() != 0) { 1744 try { 1745 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1746 } catch (NumberFormatException e) { 1747 } 1748 } 1749 // if the system property isn't set, use the value for the apn type 1750 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1751 1752 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1753 (mNetConfigs[networkType] != null)) { 1754 ret = mNetConfigs[networkType].restoreTime; 1755 } 1756 return ret; 1757 } 1758 1759 @Override 1760 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1761 if (mContext.checkCallingOrSelfPermission( 1762 android.Manifest.permission.DUMP) 1763 != PackageManager.PERMISSION_GRANTED) { 1764 pw.println("Permission Denial: can't dump ConnectivityService " + 1765 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1766 Binder.getCallingUid()); 1767 return; 1768 } 1769 pw.println(); 1770 for (NetworkStateTracker nst : mNetTrackers) { 1771 if (nst != null) { 1772 if (nst.getNetworkInfo().isConnected()) { 1773 pw.println("Active network: " + nst.getNetworkInfo(). 1774 getTypeName()); 1775 } 1776 pw.println(nst.getNetworkInfo()); 1777 pw.println(nst); 1778 pw.println(); 1779 } 1780 } 1781 1782 pw.println("Network Requester Pids:"); 1783 for (int net : mPriorityList) { 1784 String pidString = net + ": "; 1785 for (Object pid : mNetRequestersPids[net]) { 1786 pidString = pidString + pid.toString() + ", "; 1787 } 1788 pw.println(pidString); 1789 } 1790 pw.println(); 1791 1792 pw.println("FeatureUsers:"); 1793 for (Object requester : mFeatureUsers) { 1794 pw.println(requester.toString()); 1795 } 1796 pw.println(); 1797 1798 synchronized (this) { 1799 pw.println("NetworkTranstionWakeLock is currently " + 1800 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1801 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1802 } 1803 pw.println(); 1804 1805 mTethering.dump(fd, pw, args); 1806 1807 if (mInetLog != null) { 1808 pw.println(); 1809 pw.println("Inet condition reports:"); 1810 for(int i = 0; i < mInetLog.size(); i++) { 1811 pw.println(mInetLog.get(i)); 1812 } 1813 } 1814 } 1815 1816 // must be stateless - things change under us. 1817 private class MyHandler extends Handler { 1818 public MyHandler(Looper looper) { 1819 super(looper); 1820 } 1821 1822 @Override 1823 public void handleMessage(Message msg) { 1824 NetworkInfo info; 1825 switch (msg.what) { 1826 case NetworkStateTracker.EVENT_STATE_CHANGED: 1827 info = (NetworkInfo) msg.obj; 1828 int type = info.getType(); 1829 NetworkInfo.State state = info.getState(); 1830 1831 if (DBG) log("ConnectivityChange for " + 1832 info.getTypeName() + ": " + 1833 state + "/" + info.getDetailedState()); 1834 1835 // Connectivity state changed: 1836 // [31-13] Reserved for future use 1837 // [12-9] Network subtype (for mobile network, as defined 1838 // by TelephonyManager) 1839 // [8-3] Detailed state ordinal (as defined by 1840 // NetworkInfo.DetailedState) 1841 // [2-0] Network type (as defined by ConnectivityManager) 1842 int eventLogParam = (info.getType() & 0x7) | 1843 ((info.getDetailedState().ordinal() & 0x3f) << 3) | 1844 (info.getSubtype() << 9); 1845 EventLog.writeEvent(EventLogTags.CONNECTIVITY_STATE_CHANGED, 1846 eventLogParam); 1847 1848 if (info.getDetailedState() == 1849 NetworkInfo.DetailedState.FAILED) { 1850 handleConnectionFailure(info); 1851 } else if (state == NetworkInfo.State.DISCONNECTED) { 1852 handleDisconnect(info); 1853 } else if (state == NetworkInfo.State.SUSPENDED) { 1854 // TODO: need to think this over. 1855 // the logic here is, handle SUSPENDED the same as 1856 // DISCONNECTED. The only difference being we are 1857 // broadcasting an intent with NetworkInfo that's 1858 // suspended. This allows the applications an 1859 // opportunity to handle DISCONNECTED and SUSPENDED 1860 // differently, or not. 1861 handleDisconnect(info); 1862 } else if (state == NetworkInfo.State.CONNECTED) { 1863 handleConnect(info); 1864 } 1865 break; 1866 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: 1867 info = (NetworkInfo) msg.obj; 1868 handleConnectivityChange(info.getType()); 1869 break; 1870 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: 1871 String causedBy = null; 1872 synchronized (ConnectivityService.this) { 1873 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 1874 mNetTransitionWakeLock.isHeld()) { 1875 mNetTransitionWakeLock.release(); 1876 causedBy = mNetTransitionWakeLockCausedBy; 1877 } 1878 } 1879 if (causedBy != null) { 1880 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 1881 } 1882 break; 1883 case EVENT_RESTORE_DEFAULT_NETWORK: 1884 FeatureUser u = (FeatureUser)msg.obj; 1885 u.expire(); 1886 break; 1887 case EVENT_INET_CONDITION_CHANGE: 1888 { 1889 int netType = msg.arg1; 1890 int condition = msg.arg2; 1891 handleInetConditionChange(netType, condition); 1892 break; 1893 } 1894 case EVENT_INET_CONDITION_HOLD_END: 1895 { 1896 int netType = msg.arg1; 1897 int sequence = msg.arg2; 1898 handleInetConditionHoldEnd(netType, sequence); 1899 break; 1900 } 1901 case EVENT_SET_NETWORK_PREFERENCE: 1902 { 1903 int preference = msg.arg1; 1904 handleSetNetworkPreference(preference); 1905 break; 1906 } 1907 case EVENT_SET_BACKGROUND_DATA: 1908 { 1909 boolean enabled = (msg.arg1 == ENABLED); 1910 handleSetBackgroundData(enabled); 1911 break; 1912 } 1913 case EVENT_SET_MOBILE_DATA: 1914 { 1915 boolean enabled = (msg.arg1 == ENABLED); 1916 handleSetMobileData(enabled); 1917 break; 1918 } 1919 case EVENT_APPLY_GLOBAL_HTTP_PROXY: 1920 { 1921 handleDeprecatedGlobalHttpProxy(); 1922 break; 1923 } 1924 case EVENT_SET_DEPENDENCY_MET: 1925 { 1926 boolean met = (msg.arg1 == ENABLED); 1927 handleSetDependencyMet(msg.arg2, met); 1928 break; 1929 } 1930 } 1931 } 1932 } 1933 1934 // javadoc from interface 1935 public int tether(String iface) { 1936 enforceTetherChangePermission(); 1937 1938 if (isTetheringSupported()) { 1939 return mTethering.tether(iface); 1940 } else { 1941 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 1942 } 1943 } 1944 1945 // javadoc from interface 1946 public int untether(String iface) { 1947 enforceTetherChangePermission(); 1948 1949 if (isTetheringSupported()) { 1950 return mTethering.untether(iface); 1951 } else { 1952 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 1953 } 1954 } 1955 1956 // javadoc from interface 1957 public int getLastTetherError(String iface) { 1958 enforceTetherAccessPermission(); 1959 1960 if (isTetheringSupported()) { 1961 return mTethering.getLastTetherError(iface); 1962 } else { 1963 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 1964 } 1965 } 1966 1967 // TODO - proper iface API for selection by property, inspection, etc 1968 public String[] getTetherableUsbRegexs() { 1969 enforceTetherAccessPermission(); 1970 if (isTetheringSupported()) { 1971 return mTethering.getTetherableUsbRegexs(); 1972 } else { 1973 return new String[0]; 1974 } 1975 } 1976 1977 public String[] getTetherableWifiRegexs() { 1978 enforceTetherAccessPermission(); 1979 if (isTetheringSupported()) { 1980 return mTethering.getTetherableWifiRegexs(); 1981 } else { 1982 return new String[0]; 1983 } 1984 } 1985 1986 public String[] getTetherableBluetoothRegexs() { 1987 enforceTetherAccessPermission(); 1988 if (isTetheringSupported()) { 1989 return mTethering.getTetherableBluetoothRegexs(); 1990 } else { 1991 return new String[0]; 1992 } 1993 } 1994 1995 // TODO - move iface listing, queries, etc to new module 1996 // javadoc from interface 1997 public String[] getTetherableIfaces() { 1998 enforceTetherAccessPermission(); 1999 return mTethering.getTetherableIfaces(); 2000 } 2001 2002 public String[] getTetheredIfaces() { 2003 enforceTetherAccessPermission(); 2004 return mTethering.getTetheredIfaces(); 2005 } 2006 2007 public String[] getTetheringErroredIfaces() { 2008 enforceTetherAccessPermission(); 2009 return mTethering.getErroredIfaces(); 2010 } 2011 2012 // if ro.tether.denied = true we default to no tethering 2013 // gservices could set the secure setting to 1 though to enable it on a build where it 2014 // had previously been turned off. 2015 public boolean isTetheringSupported() { 2016 enforceTetherAccessPermission(); 2017 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2018 boolean tetherEnabledInSettings = (Settings.Secure.getInt(mContext.getContentResolver(), 2019 Settings.Secure.TETHER_SUPPORTED, defaultVal) != 0); 2020 return tetherEnabledInSettings && mTetheringConfigValid; 2021 } 2022 2023 // An API NetworkStateTrackers can call when they lose their network. 2024 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 2025 // whichever happens first. The timer is started by the first caller and not 2026 // restarted by subsequent callers. 2027 public void requestNetworkTransitionWakelock(String forWhom) { 2028 enforceConnectivityInternalPermission(); 2029 synchronized (this) { 2030 if (mNetTransitionWakeLock.isHeld()) return; 2031 mNetTransitionWakeLockSerialNumber++; 2032 mNetTransitionWakeLock.acquire(); 2033 mNetTransitionWakeLockCausedBy = forWhom; 2034 } 2035 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2036 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2037 mNetTransitionWakeLockSerialNumber, 0), 2038 mNetTransitionWakeLockTimeout); 2039 return; 2040 } 2041 2042 // 100 percent is full good, 0 is full bad. 2043 public void reportInetCondition(int networkType, int percentage) { 2044 if (DBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 2045 mContext.enforceCallingOrSelfPermission( 2046 android.Manifest.permission.STATUS_BAR, 2047 "ConnectivityService"); 2048 2049 if (DBG) { 2050 int pid = getCallingPid(); 2051 int uid = getCallingUid(); 2052 String s = pid + "(" + uid + ") reports inet is " + 2053 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 2054 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 2055 mInetLog.add(s); 2056 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 2057 mInetLog.remove(0); 2058 } 2059 } 2060 mHandler.sendMessage(mHandler.obtainMessage( 2061 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 2062 } 2063 2064 private void handleInetConditionChange(int netType, int condition) { 2065 if (DBG) { 2066 log("Inet connectivity change, net=" + 2067 netType + ", condition=" + condition + 2068 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 2069 } 2070 if (mActiveDefaultNetwork == -1) { 2071 if (DBG) log("no active default network - aborting"); 2072 return; 2073 } 2074 if (mActiveDefaultNetwork != netType) { 2075 if (DBG) log("given net not default - aborting"); 2076 return; 2077 } 2078 mDefaultInetCondition = condition; 2079 int delay; 2080 if (mInetConditionChangeInFlight == false) { 2081 if (DBG) log("starting a change hold"); 2082 // setup a new hold to debounce this 2083 if (mDefaultInetCondition > 50) { 2084 delay = Settings.Secure.getInt(mContext.getContentResolver(), 2085 Settings.Secure.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 2086 } else { 2087 delay = Settings.Secure.getInt(mContext.getContentResolver(), 2088 Settings.Secure.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 2089 } 2090 mInetConditionChangeInFlight = true; 2091 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 2092 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 2093 } else { 2094 // we've set the new condition, when this hold ends that will get 2095 // picked up 2096 if (DBG) log("currently in hold - not setting new end evt"); 2097 } 2098 } 2099 2100 private void handleInetConditionHoldEnd(int netType, int sequence) { 2101 if (DBG) { 2102 log("Inet hold end, net=" + netType + 2103 ", condition =" + mDefaultInetCondition + 2104 ", published condition =" + mDefaultInetConditionPublished); 2105 } 2106 mInetConditionChangeInFlight = false; 2107 2108 if (mActiveDefaultNetwork == -1) { 2109 if (DBG) log("no active default network - aborting"); 2110 return; 2111 } 2112 if (mDefaultConnectionSequence != sequence) { 2113 if (DBG) log("event hold for obsolete network - aborting"); 2114 return; 2115 } 2116 if (mDefaultInetConditionPublished == mDefaultInetCondition) { 2117 if (DBG) log("no change in condition - aborting"); 2118 return; 2119 } 2120 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2121 if (networkInfo.isConnected() == false) { 2122 if (DBG) log("default network not connected - aborting"); 2123 return; 2124 } 2125 mDefaultInetConditionPublished = mDefaultInetCondition; 2126 sendInetConditionBroadcast(networkInfo); 2127 return; 2128 } 2129 2130 public synchronized ProxyProperties getProxy() { 2131 if (mGlobalProxy != null) return mGlobalProxy; 2132 if (mDefaultProxy != null) return mDefaultProxy; 2133 return null; 2134 } 2135 2136 public void setGlobalProxy(ProxyProperties proxyProperties) { 2137 enforceChangePermission(); 2138 synchronized (mGlobalProxyLock) { 2139 if (proxyProperties == mGlobalProxy) return; 2140 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2141 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2142 2143 String host = ""; 2144 int port = 0; 2145 String exclList = ""; 2146 if (proxyProperties != null && !TextUtils.isEmpty(proxyProperties.getHost())) { 2147 mGlobalProxy = new ProxyProperties(proxyProperties); 2148 host = mGlobalProxy.getHost(); 2149 port = mGlobalProxy.getPort(); 2150 exclList = mGlobalProxy.getExclusionList(); 2151 } else { 2152 mGlobalProxy = null; 2153 } 2154 ContentResolver res = mContext.getContentResolver(); 2155 Settings.Secure.putString(res, Settings.Secure.GLOBAL_HTTP_PROXY_HOST, host); 2156 Settings.Secure.putInt(res, Settings.Secure.GLOBAL_HTTP_PROXY_PORT, port); 2157 Settings.Secure.putString(res, Settings.Secure.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2158 exclList); 2159 } 2160 2161 if (mGlobalProxy == null) { 2162 proxyProperties = mDefaultProxy; 2163 } 2164 sendProxyBroadcast(proxyProperties); 2165 } 2166 2167 private void loadGlobalProxy() { 2168 ContentResolver res = mContext.getContentResolver(); 2169 String host = Settings.Secure.getString(res, Settings.Secure.GLOBAL_HTTP_PROXY_HOST); 2170 int port = Settings.Secure.getInt(res, Settings.Secure.GLOBAL_HTTP_PROXY_PORT, 0); 2171 String exclList = Settings.Secure.getString(res, 2172 Settings.Secure.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2173 if (!TextUtils.isEmpty(host)) { 2174 ProxyProperties proxyProperties = new ProxyProperties(host, port, exclList); 2175 synchronized (mGlobalProxyLock) { 2176 mGlobalProxy = proxyProperties; 2177 } 2178 } 2179 } 2180 2181 public ProxyProperties getGlobalProxy() { 2182 synchronized (mGlobalProxyLock) { 2183 return mGlobalProxy; 2184 } 2185 } 2186 2187 private void handleApplyDefaultProxy(int type) { 2188 // check if new default - push it out to all VM if so 2189 ProxyProperties proxy = mNetTrackers[type].getLinkProperties().getHttpProxy(); 2190 synchronized (this) { 2191 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2192 if (mDefaultProxy == proxy) return; 2193 if (!TextUtils.isEmpty(proxy.getHost())) { 2194 mDefaultProxy = proxy; 2195 } else { 2196 mDefaultProxy = null; 2197 } 2198 } 2199 if (DBG) log("changing default proxy to " + proxy); 2200 if ((proxy == null && mGlobalProxy == null) || proxy.equals(mGlobalProxy)) return; 2201 if (mGlobalProxy != null) return; 2202 sendProxyBroadcast(proxy); 2203 } 2204 2205 private void handleDeprecatedGlobalHttpProxy() { 2206 String proxy = Settings.Secure.getString(mContext.getContentResolver(), 2207 Settings.Secure.HTTP_PROXY); 2208 if (!TextUtils.isEmpty(proxy)) { 2209 String data[] = proxy.split(":"); 2210 String proxyHost = data[0]; 2211 int proxyPort = 8080; 2212 if (data.length > 1) { 2213 try { 2214 proxyPort = Integer.parseInt(data[1]); 2215 } catch (NumberFormatException e) { 2216 return; 2217 } 2218 } 2219 ProxyProperties p = new ProxyProperties(data[0], proxyPort, ""); 2220 setGlobalProxy(p); 2221 } 2222 } 2223 2224 private void sendProxyBroadcast(ProxyProperties proxy) { 2225 if (proxy == null) proxy = new ProxyProperties("", 0, ""); 2226 log("sending Proxy Broadcast for " + proxy); 2227 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2228 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2229 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2230 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2231 mContext.sendStickyBroadcast(intent); 2232 } 2233 2234 private static class SettingsObserver extends ContentObserver { 2235 private int mWhat; 2236 private Handler mHandler; 2237 SettingsObserver(Handler handler, int what) { 2238 super(handler); 2239 mHandler = handler; 2240 mWhat = what; 2241 } 2242 2243 void observe(Context context) { 2244 ContentResolver resolver = context.getContentResolver(); 2245 resolver.registerContentObserver(Settings.Secure.getUriFor( 2246 Settings.Secure.HTTP_PROXY), false, this); 2247 } 2248 2249 @Override 2250 public void onChange(boolean selfChange) { 2251 mHandler.obtainMessage(mWhat).sendToTarget(); 2252 } 2253 } 2254 2255 private void handleTetherIfaceChange(int type) { 2256 String iface = mNetTrackers[type].getLinkProperties().getInterfaceName(); 2257 2258 if (isTetheringSupported()) { 2259 mTethering.handleTetherIfaceChange(iface); 2260 } 2261 } 2262 2263 private void log(String s) { 2264 Slog.d(TAG, s); 2265 } 2266 2267 private void loge(String s) { 2268 Slog.e(TAG, s); 2269 } 2270 int convertFeatureToNetworkType(String feature){ 2271 int networkType = -1; 2272 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 2273 networkType = ConnectivityManager.TYPE_MOBILE_MMS; 2274 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 2275 networkType = ConnectivityManager.TYPE_MOBILE_SUPL; 2276 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 2277 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 2278 networkType = ConnectivityManager.TYPE_MOBILE_DUN; 2279 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 2280 networkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 2281 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 2282 networkType = ConnectivityManager.TYPE_MOBILE_FOTA; 2283 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 2284 networkType = ConnectivityManager.TYPE_MOBILE_IMS; 2285 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 2286 networkType = ConnectivityManager.TYPE_MOBILE_CBS; 2287 } 2288 return networkType; 2289 } 2290} 2291