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 package android.net; 17 18 import static com.android.internal.util.Preconditions.checkNotNull; 19 20 import android.annotation.IntDef; 21 import android.annotation.Nullable; 22 import android.annotation.RequiresPermission; 23 import android.annotation.SdkConstant; 24 import android.annotation.SdkConstant.SdkConstantType; 25 import android.annotation.SystemApi; 26 import android.annotation.SystemService; 27 import android.app.PendingIntent; 28 import android.content.Context; 29 import android.content.Intent; 30 import android.content.pm.PackageManager; 31 import android.os.Binder; 32 import android.os.Build.VERSION_CODES; 33 import android.os.Bundle; 34 import android.os.Handler; 35 import android.os.HandlerThread; 36 import android.os.IBinder; 37 import android.os.INetworkActivityListener; 38 import android.os.INetworkManagementService; 39 import android.os.Looper; 40 import android.os.Message; 41 import android.os.Messenger; 42 import android.os.Process; 43 import android.os.RemoteException; 44 import android.os.ResultReceiver; 45 import android.os.ServiceManager; 46 import android.provider.Settings; 47 import android.telephony.SubscriptionManager; 48 import android.util.ArrayMap; 49 import android.util.Log; 50 import android.util.SparseArray; 51 import android.util.SparseIntArray; 52 53 import com.android.internal.telephony.ITelephony; 54 import com.android.internal.telephony.PhoneConstants; 55 import com.android.internal.util.Protocol; 56 import com.android.internal.util.MessageUtils; 57 58 import libcore.net.event.NetworkEventDispatcher; 59 60 import java.lang.annotation.Retention; 61 import java.lang.annotation.RetentionPolicy; 62 import java.net.InetAddress; 63 import java.util.HashMap; 64 import java.util.concurrent.atomic.AtomicInteger; 65 66 /** 67 * Class that answers queries about the state of network connectivity. It also 68 * notifies applications when network connectivity changes. 69 * <p> 70 * The primary responsibilities of this class are to: 71 * <ol> 72 * <li>Monitor network connections (Wi-Fi, GPRS, UMTS, etc.)</li> 73 * <li>Send broadcast intents when network connectivity changes</li> 74 * <li>Attempt to "fail over" to another network when connectivity to a network 75 * is lost</li> 76 * <li>Provide an API that allows applications to query the coarse-grained or fine-grained 77 * state of the available networks</li> 78 * <li>Provide an API that allows applications to request and select networks for their data 79 * traffic</li> 80 * </ol> 81 */ 82 @SystemService(Context.CONNECTIVITY_SERVICE) 83 public class ConnectivityManager { 84 private static final String TAG = "ConnectivityManager"; 85 86 /** 87 * A change in network connectivity has occurred. A default connection has either 88 * been established or lost. The NetworkInfo for the affected network is 89 * sent as an extra; it should be consulted to see what kind of 90 * connectivity event occurred. 91 * <p/> 92 * Apps targeting Android 7.0 (API level 24) and higher do not receive this 93 * broadcast if they declare the broadcast receiver in their manifest. Apps 94 * will still receive broadcasts if they register their 95 * {@link android.content.BroadcastReceiver} with 96 * {@link android.content.Context#registerReceiver Context.registerReceiver()} 97 * and that context is still valid. 98 * <p/> 99 * If this is a connection that was the result of failing over from a 100 * disconnected network, then the FAILOVER_CONNECTION boolean extra is 101 * set to true. 102 * <p/> 103 * For a loss of connectivity, if the connectivity manager is attempting 104 * to connect (or has already connected) to another network, the 105 * NetworkInfo for the new network is also passed as an extra. This lets 106 * any receivers of the broadcast know that they should not necessarily 107 * tell the user that no data traffic will be possible. Instead, the 108 * receiver should expect another broadcast soon, indicating either that 109 * the failover attempt succeeded (and so there is still overall data 110 * connectivity), or that the failover attempt failed, meaning that all 111 * connectivity has been lost. 112 * <p/> 113 * For a disconnect event, the boolean extra EXTRA_NO_CONNECTIVITY 114 * is set to {@code true} if there are no connected networks at all. 115 */ 116 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 117 public static final String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE"; 118 119 /** 120 * A temporary hack until SUPL system can get off the legacy APIS. 121 * They do too many network requests and the long list of apps listening 122 * and waking due to the CONNECTIVITY_ACTION bcast makes it expensive. 123 * Use this bcast intent instead for SUPL requests. 124 * @hide 125 */ 126 public static final String CONNECTIVITY_ACTION_SUPL = 127 "android.net.conn.CONNECTIVITY_CHANGE_SUPL"; 128 129 /** 130 * The device has connected to a network that has presented a captive 131 * portal, which is blocking Internet connectivity. The user was presented 132 * with a notification that network sign in is required, 133 * and the user invoked the notification's action indicating they 134 * desire to sign in to the network. Apps handling this activity should 135 * facilitate signing in to the network. This action includes a 136 * {@link Network} typed extra called {@link #EXTRA_NETWORK} that represents 137 * the network presenting the captive portal; all communication with the 138 * captive portal must be done using this {@code Network} object. 139 * <p/> 140 * This activity includes a {@link CaptivePortal} extra named 141 * {@link #EXTRA_CAPTIVE_PORTAL} that can be used to indicate different 142 * outcomes of the captive portal sign in to the system: 143 * <ul> 144 * <li> When the app handling this action believes the user has signed in to 145 * the network and the captive portal has been dismissed, the app should 146 * call {@link CaptivePortal#reportCaptivePortalDismissed} so the system can 147 * reevaluate the network. If reevaluation finds the network no longer 148 * subject to a captive portal, the network may become the default active 149 * data network. </li> 150 * <li> When the app handling this action believes the user explicitly wants 151 * to ignore the captive portal and the network, the app should call 152 * {@link CaptivePortal#ignoreNetwork}. </li> 153 * </ul> 154 */ 155 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 156 public static final String ACTION_CAPTIVE_PORTAL_SIGN_IN = "android.net.conn.CAPTIVE_PORTAL"; 157 158 /** 159 * The lookup key for a {@link NetworkInfo} object. Retrieve with 160 * {@link android.content.Intent#getParcelableExtra(String)}. 161 * 162 * @deprecated Since {@link NetworkInfo} can vary based on UID, applications 163 * should always obtain network information through 164 * {@link #getActiveNetworkInfo()}. 165 * @see #EXTRA_NETWORK_TYPE 166 */ 167 @Deprecated 168 public static final String EXTRA_NETWORK_INFO = "networkInfo"; 169 170 /** 171 * Network type which triggered a {@link #CONNECTIVITY_ACTION} broadcast. 172 * 173 * @see android.content.Intent#getIntExtra(String, int) 174 */ 175 public static final String EXTRA_NETWORK_TYPE = "networkType"; 176 177 /** 178 * The lookup key for a boolean that indicates whether a connect event 179 * is for a network to which the connectivity manager was failing over 180 * following a disconnect on another network. 181 * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. 182 */ 183 public static final String EXTRA_IS_FAILOVER = "isFailover"; 184 /** 185 * The lookup key for a {@link NetworkInfo} object. This is supplied when 186 * there is another network that it may be possible to connect to. Retrieve with 187 * {@link android.content.Intent#getParcelableExtra(String)}. 188 */ 189 public static final String EXTRA_OTHER_NETWORK_INFO = "otherNetwork"; 190 /** 191 * The lookup key for a boolean that indicates whether there is a 192 * complete lack of connectivity, i.e., no network is available. 193 * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. 194 */ 195 public static final String EXTRA_NO_CONNECTIVITY = "noConnectivity"; 196 /** 197 * The lookup key for a string that indicates why an attempt to connect 198 * to a network failed. The string has no particular structure. It is 199 * intended to be used in notifications presented to users. Retrieve 200 * it with {@link android.content.Intent#getStringExtra(String)}. 201 */ 202 public static final String EXTRA_REASON = "reason"; 203 /** 204 * The lookup key for a string that provides optionally supplied 205 * extra information about the network state. The information 206 * may be passed up from the lower networking layers, and its 207 * meaning may be specific to a particular network type. Retrieve 208 * it with {@link android.content.Intent#getStringExtra(String)}. 209 */ 210 public static final String EXTRA_EXTRA_INFO = "extraInfo"; 211 /** 212 * The lookup key for an int that provides information about 213 * our connection to the internet at large. 0 indicates no connection, 214 * 100 indicates a great connection. Retrieve it with 215 * {@link android.content.Intent#getIntExtra(String, int)}. 216 * {@hide} 217 */ 218 public static final String EXTRA_INET_CONDITION = "inetCondition"; 219 /** 220 * The lookup key for a {@link CaptivePortal} object included with the 221 * {@link #ACTION_CAPTIVE_PORTAL_SIGN_IN} intent. The {@code CaptivePortal} 222 * object can be used to either indicate to the system that the captive 223 * portal has been dismissed or that the user does not want to pursue 224 * signing in to captive portal. Retrieve it with 225 * {@link android.content.Intent#getParcelableExtra(String)}. 226 */ 227 public static final String EXTRA_CAPTIVE_PORTAL = "android.net.extra.CAPTIVE_PORTAL"; 228 229 /** 230 * Key for passing a URL to the captive portal login activity. 231 */ 232 public static final String EXTRA_CAPTIVE_PORTAL_URL = "android.net.extra.CAPTIVE_PORTAL_URL"; 233 234 /** 235 * Key for passing a user agent string to the captive portal login activity. 236 * {@hide} 237 */ 238 public static final String EXTRA_CAPTIVE_PORTAL_USER_AGENT = 239 "android.net.extra.CAPTIVE_PORTAL_USER_AGENT"; 240 241 /** 242 * Broadcast action to indicate the change of data activity status 243 * (idle or active) on a network in a recent period. 244 * The network becomes active when data transmission is started, or 245 * idle if there is no data transmission for a period of time. 246 * {@hide} 247 */ 248 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 249 public static final String ACTION_DATA_ACTIVITY_CHANGE = "android.net.conn.DATA_ACTIVITY_CHANGE"; 250 /** 251 * The lookup key for an enum that indicates the network device type on which this data activity 252 * change happens. 253 * {@hide} 254 */ 255 public static final String EXTRA_DEVICE_TYPE = "deviceType"; 256 /** 257 * The lookup key for a boolean that indicates the device is active or not. {@code true} means 258 * it is actively sending or receiving data and {@code false} means it is idle. 259 * {@hide} 260 */ 261 public static final String EXTRA_IS_ACTIVE = "isActive"; 262 /** 263 * The lookup key for a long that contains the timestamp (nanos) of the radio state change. 264 * {@hide} 265 */ 266 public static final String EXTRA_REALTIME_NS = "tsNanos"; 267 268 /** 269 * Broadcast Action: The setting for background data usage has changed 270 * values. Use {@link #getBackgroundDataSetting()} to get the current value. 271 * <p> 272 * If an application uses the network in the background, it should listen 273 * for this broadcast and stop using the background data if the value is 274 * {@code false}. 275 * <p> 276 * 277 * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability 278 * of background data depends on several combined factors, and 279 * this broadcast is no longer sent. Instead, when background 280 * data is unavailable, {@link #getActiveNetworkInfo()} will now 281 * appear disconnected. During first boot after a platform 282 * upgrade, this broadcast will be sent once if 283 * {@link #getBackgroundDataSetting()} was {@code false} before 284 * the upgrade. 285 */ 286 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 287 @Deprecated 288 public static final String ACTION_BACKGROUND_DATA_SETTING_CHANGED = 289 "android.net.conn.BACKGROUND_DATA_SETTING_CHANGED"; 290 291 /** 292 * Broadcast Action: The network connection may not be good 293 * uses {@code ConnectivityManager.EXTRA_INET_CONDITION} and 294 * {@code ConnectivityManager.EXTRA_NETWORK_INFO} to specify 295 * the network and it's condition. 296 * @hide 297 */ 298 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 299 public static final String INET_CONDITION_ACTION = 300 "android.net.conn.INET_CONDITION_ACTION"; 301 302 /** 303 * Broadcast Action: A tetherable connection has come or gone. 304 * Uses {@code ConnectivityManager.EXTRA_AVAILABLE_TETHER}, 305 * {@code ConnectivityManager.EXTRA_ACTIVE_LOCAL_ONLY}, 306 * {@code ConnectivityManager.EXTRA_ACTIVE_TETHER}, and 307 * {@code ConnectivityManager.EXTRA_ERRORED_TETHER} to indicate 308 * the current state of tethering. Each include a list of 309 * interface names in that state (may be empty). 310 * @hide 311 */ 312 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 313 public static final String ACTION_TETHER_STATE_CHANGED = 314 "android.net.conn.TETHER_STATE_CHANGED"; 315 316 /** 317 * @hide 318 * gives a String[] listing all the interfaces configured for 319 * tethering and currently available for tethering. 320 */ 321 public static final String EXTRA_AVAILABLE_TETHER = "availableArray"; 322 323 /** 324 * @hide 325 * gives a String[] listing all the interfaces currently in local-only 326 * mode (ie, has DHCPv4+IPv6-ULA support and no packet forwarding) 327 */ 328 public static final String EXTRA_ACTIVE_LOCAL_ONLY = "localOnlyArray"; 329 330 /** 331 * @hide 332 * gives a String[] listing all the interfaces currently tethered 333 * (ie, has DHCPv4 support and packets potentially forwarded/NATed) 334 */ 335 public static final String EXTRA_ACTIVE_TETHER = "tetherArray"; 336 337 /** 338 * @hide 339 * gives a String[] listing all the interfaces we tried to tether and 340 * failed. Use {@link #getLastTetherError} to find the error code 341 * for any interfaces listed here. 342 */ 343 public static final String EXTRA_ERRORED_TETHER = "erroredArray"; 344 345 /** 346 * Broadcast Action: The captive portal tracker has finished its test. 347 * Sent only while running Setup Wizard, in lieu of showing a user 348 * notification. 349 * @hide 350 */ 351 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 352 public static final String ACTION_CAPTIVE_PORTAL_TEST_COMPLETED = 353 "android.net.conn.CAPTIVE_PORTAL_TEST_COMPLETED"; 354 /** 355 * The lookup key for a boolean that indicates whether a captive portal was detected. 356 * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}. 357 * @hide 358 */ 359 public static final String EXTRA_IS_CAPTIVE_PORTAL = "captivePortal"; 360 361 /** 362 * Action used to display a dialog that asks the user whether to connect to a network that is 363 * not validated. This intent is used to start the dialog in settings via startActivity. 364 * 365 * @hide 366 */ 367 public static final String ACTION_PROMPT_UNVALIDATED = "android.net.conn.PROMPT_UNVALIDATED"; 368 369 /** 370 * Action used to display a dialog that asks the user whether to avoid a network that is no 371 * longer validated. This intent is used to start the dialog in settings via startActivity. 372 * 373 * @hide 374 */ 375 public static final String ACTION_PROMPT_LOST_VALIDATION = 376 "android.net.conn.PROMPT_LOST_VALIDATION"; 377 378 /** 379 * Invalid tethering type. 380 * @see #startTethering(int, OnStartTetheringCallback, boolean) 381 * @hide 382 */ 383 public static final int TETHERING_INVALID = -1; 384 385 /** 386 * Wifi tethering type. 387 * @see #startTethering(int, OnStartTetheringCallback, boolean) 388 * @hide 389 */ 390 @SystemApi 391 public static final int TETHERING_WIFI = 0; 392 393 /** 394 * USB tethering type. 395 * @see #startTethering(int, OnStartTetheringCallback, boolean) 396 * @hide 397 */ 398 @SystemApi 399 public static final int TETHERING_USB = 1; 400 401 /** 402 * Bluetooth tethering type. 403 * @see #startTethering(int, OnStartTetheringCallback, boolean) 404 * @hide 405 */ 406 @SystemApi 407 public static final int TETHERING_BLUETOOTH = 2; 408 409 /** 410 * Extra used for communicating with the TetherService. Includes the type of tethering to 411 * enable if any. 412 * @hide 413 */ 414 public static final String EXTRA_ADD_TETHER_TYPE = "extraAddTetherType"; 415 416 /** 417 * Extra used for communicating with the TetherService. Includes the type of tethering for 418 * which to cancel provisioning. 419 * @hide 420 */ 421 public static final String EXTRA_REM_TETHER_TYPE = "extraRemTetherType"; 422 423 /** 424 * Extra used for communicating with the TetherService. True to schedule a recheck of tether 425 * provisioning. 426 * @hide 427 */ 428 public static final String EXTRA_SET_ALARM = "extraSetAlarm"; 429 430 /** 431 * Tells the TetherService to run a provision check now. 432 * @hide 433 */ 434 public static final String EXTRA_RUN_PROVISION = "extraRunProvision"; 435 436 /** 437 * Extra used for communicating with the TetherService. Contains the {@link ResultReceiver} 438 * which will receive provisioning results. Can be left empty. 439 * @hide 440 */ 441 public static final String EXTRA_PROVISION_CALLBACK = "extraProvisionCallback"; 442 443 /** 444 * The absence of a connection type. 445 * @hide 446 */ 447 public static final int TYPE_NONE = -1; 448 449 /** 450 * The Mobile data connection. When active, all data traffic 451 * will use this network type's interface by default 452 * (it has a default route) 453 */ 454 public static final int TYPE_MOBILE = 0; 455 /** 456 * The WIFI data connection. When active, all data traffic 457 * will use this network type's interface by default 458 * (it has a default route). 459 */ 460 public static final int TYPE_WIFI = 1; 461 /** 462 * An MMS-specific Mobile data connection. This network type may use the 463 * same network interface as {@link #TYPE_MOBILE} or it may use a different 464 * one. This is used by applications needing to talk to the carrier's 465 * Multimedia Messaging Service servers. 466 * 467 * @deprecated Applications should instead use 468 * {@link #requestNetwork(NetworkRequest, NetworkCallback)} to request a network that 469 * provides the {@link NetworkCapabilities#NET_CAPABILITY_MMS} capability. 470 */ 471 @Deprecated 472 public static final int TYPE_MOBILE_MMS = 2; 473 /** 474 * A SUPL-specific Mobile data connection. This network type may use the 475 * same network interface as {@link #TYPE_MOBILE} or it may use a different 476 * one. This is used by applications needing to talk to the carrier's 477 * Secure User Plane Location servers for help locating the device. 478 * 479 * @deprecated Applications should instead use 480 * {@link #requestNetwork(NetworkRequest, NetworkCallback)} to request a network that 481 * provides the {@link NetworkCapabilities#NET_CAPABILITY_SUPL} capability. 482 */ 483 @Deprecated 484 public static final int TYPE_MOBILE_SUPL = 3; 485 /** 486 * A DUN-specific Mobile data connection. This network type may use the 487 * same network interface as {@link #TYPE_MOBILE} or it may use a different 488 * one. This is sometimes by the system when setting up an upstream connection 489 * for tethering so that the carrier is aware of DUN traffic. 490 */ 491 public static final int TYPE_MOBILE_DUN = 4; 492 /** 493 * A High Priority Mobile data connection. This network type uses the 494 * same network interface as {@link #TYPE_MOBILE} but the routing setup 495 * is different. 496 * 497 * @deprecated Applications should instead use 498 * {@link #requestNetwork(NetworkRequest, NetworkCallback)} to request a network that 499 * uses the {@link NetworkCapabilities#TRANSPORT_CELLULAR} transport. 500 */ 501 @Deprecated 502 public static final int TYPE_MOBILE_HIPRI = 5; 503 /** 504 * The WiMAX data connection. When active, all data traffic 505 * will use this network type's interface by default 506 * (it has a default route). 507 */ 508 public static final int TYPE_WIMAX = 6; 509 510 /** 511 * The Bluetooth data connection. When active, all data traffic 512 * will use this network type's interface by default 513 * (it has a default route). 514 */ 515 public static final int TYPE_BLUETOOTH = 7; 516 517 /** 518 * Dummy data connection. This should not be used on shipping devices. 519 */ 520 public static final int TYPE_DUMMY = 8; 521 522 /** 523 * The Ethernet data connection. When active, all data traffic 524 * will use this network type's interface by default 525 * (it has a default route). 526 */ 527 public static final int TYPE_ETHERNET = 9; 528 529 /** 530 * Over the air Administration. 531 * {@hide} 532 */ 533 public static final int TYPE_MOBILE_FOTA = 10; 534 535 /** 536 * IP Multimedia Subsystem. 537 * {@hide} 538 */ 539 public static final int TYPE_MOBILE_IMS = 11; 540 541 /** 542 * Carrier Branded Services. 543 * {@hide} 544 */ 545 public static final int TYPE_MOBILE_CBS = 12; 546 547 /** 548 * A Wi-Fi p2p connection. Only requesting processes will have access to 549 * the peers connected. 550 * {@hide} 551 */ 552 public static final int TYPE_WIFI_P2P = 13; 553 554 /** 555 * The network to use for initially attaching to the network 556 * {@hide} 557 */ 558 public static final int TYPE_MOBILE_IA = 14; 559 560 /** 561 * Emergency PDN connection for emergency services. This 562 * may include IMS and MMS in emergency situations. 563 * {@hide} 564 */ 565 public static final int TYPE_MOBILE_EMERGENCY = 15; 566 567 /** 568 * The network that uses proxy to achieve connectivity. 569 * {@hide} 570 */ 571 public static final int TYPE_PROXY = 16; 572 573 /** 574 * A virtual network using one or more native bearers. 575 * It may or may not be providing security services. 576 */ 577 public static final int TYPE_VPN = 17; 578 579 /** {@hide} */ 580 public static final int MAX_RADIO_TYPE = TYPE_VPN; 581 582 /** {@hide} */ 583 public static final int MAX_NETWORK_TYPE = TYPE_VPN; 584 585 /** 586 * If you want to set the default network preference,you can directly 587 * change the networkAttributes array in framework's config.xml. 588 * 589 * @deprecated Since we support so many more networks now, the single 590 * network default network preference can't really express 591 * the hierarchy. Instead, the default is defined by the 592 * networkAttributes in config.xml. You can determine 593 * the current value by calling {@link #getNetworkPreference()} 594 * from an App. 595 */ 596 @Deprecated 597 public static final int DEFAULT_NETWORK_PREFERENCE = TYPE_WIFI; 598 599 /** 600 * @hide 601 */ 602 public final static int REQUEST_ID_UNSET = 0; 603 604 /** 605 * A NetID indicating no Network is selected. 606 * Keep in sync with bionic/libc/dns/include/resolv_netid.h 607 * @hide 608 */ 609 public static final int NETID_UNSET = 0; 610 611 private final IConnectivityManager mService; 612 /** 613 * A kludge to facilitate static access where a Context pointer isn't available, like in the 614 * case of the static set/getProcessDefaultNetwork methods and from the Network class. 615 * TODO: Remove this after deprecating the static methods in favor of non-static methods or 616 * methods that take a Context argument. 617 */ 618 private static ConnectivityManager sInstance; 619 620 private final Context mContext; 621 622 private INetworkManagementService mNMService; 623 private INetworkPolicyManager mNPManager; 624 625 /** 626 * Tests if a given integer represents a valid network type. 627 * @param networkType the type to be tested 628 * @return a boolean. {@code true} if the type is valid, else {@code false} 629 * @deprecated All APIs accepting a network type are deprecated. There should be no need to 630 * validate a network type. 631 */ 632 @Deprecated 633 public static boolean isNetworkTypeValid(int networkType) { 634 return networkType >= 0 && networkType <= MAX_NETWORK_TYPE; 635 } 636 637 /** 638 * Returns a non-localized string representing a given network type. 639 * ONLY used for debugging output. 640 * @param type the type needing naming 641 * @return a String for the given type, or a string version of the type ("87") 642 * if no name is known. 643 * {@hide} 644 */ 645 public static String getNetworkTypeName(int type) { 646 switch (type) { 647 case TYPE_MOBILE: 648 return "MOBILE"; 649 case TYPE_WIFI: 650 return "WIFI"; 651 case TYPE_MOBILE_MMS: 652 return "MOBILE_MMS"; 653 case TYPE_MOBILE_SUPL: 654 return "MOBILE_SUPL"; 655 case TYPE_MOBILE_DUN: 656 return "MOBILE_DUN"; 657 case TYPE_MOBILE_HIPRI: 658 return "MOBILE_HIPRI"; 659 case TYPE_WIMAX: 660 return "WIMAX"; 661 case TYPE_BLUETOOTH: 662 return "BLUETOOTH"; 663 case TYPE_DUMMY: 664 return "DUMMY"; 665 case TYPE_ETHERNET: 666 return "ETHERNET"; 667 case TYPE_MOBILE_FOTA: 668 return "MOBILE_FOTA"; 669 case TYPE_MOBILE_IMS: 670 return "MOBILE_IMS"; 671 case TYPE_MOBILE_CBS: 672 return "MOBILE_CBS"; 673 case TYPE_WIFI_P2P: 674 return "WIFI_P2P"; 675 case TYPE_MOBILE_IA: 676 return "MOBILE_IA"; 677 case TYPE_MOBILE_EMERGENCY: 678 return "MOBILE_EMERGENCY"; 679 case TYPE_PROXY: 680 return "PROXY"; 681 case TYPE_VPN: 682 return "VPN"; 683 default: 684 return Integer.toString(type); 685 } 686 } 687 688 /** 689 * Checks if a given type uses the cellular data connection. 690 * This should be replaced in the future by a network property. 691 * @param networkType the type to check 692 * @return a boolean - {@code true} if uses cellular network, else {@code false} 693 * {@hide} 694 */ 695 public static boolean isNetworkTypeMobile(int networkType) { 696 switch (networkType) { 697 case TYPE_MOBILE: 698 case TYPE_MOBILE_MMS: 699 case TYPE_MOBILE_SUPL: 700 case TYPE_MOBILE_DUN: 701 case TYPE_MOBILE_HIPRI: 702 case TYPE_MOBILE_FOTA: 703 case TYPE_MOBILE_IMS: 704 case TYPE_MOBILE_CBS: 705 case TYPE_MOBILE_IA: 706 case TYPE_MOBILE_EMERGENCY: 707 return true; 708 default: 709 return false; 710 } 711 } 712 713 /** 714 * Checks if the given network type is backed by a Wi-Fi radio. 715 * 716 * @hide 717 */ 718 public static boolean isNetworkTypeWifi(int networkType) { 719 switch (networkType) { 720 case TYPE_WIFI: 721 case TYPE_WIFI_P2P: 722 return true; 723 default: 724 return false; 725 } 726 } 727 728 /** 729 * Specifies the preferred network type. When the device has more 730 * than one type available the preferred network type will be used. 731 * 732 * @param preference the network type to prefer over all others. It is 733 * unspecified what happens to the old preferred network in the 734 * overall ordering. 735 * @deprecated Functionality has been removed as it no longer makes sense, 736 * with many more than two networks - we'd need an array to express 737 * preference. Instead we use dynamic network properties of 738 * the networks to describe their precedence. 739 */ 740 @Deprecated 741 public void setNetworkPreference(int preference) { 742 } 743 744 /** 745 * Retrieves the current preferred network type. 746 * 747 * @return an integer representing the preferred network type 748 * 749 * @deprecated Functionality has been removed as it no longer makes sense, 750 * with many more than two networks - we'd need an array to express 751 * preference. Instead we use dynamic network properties of 752 * the networks to describe their precedence. 753 */ 754 @Deprecated 755 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 756 public int getNetworkPreference() { 757 return TYPE_NONE; 758 } 759 760 /** 761 * Returns details about the currently active default data network. When 762 * connected, this network is the default route for outgoing connections. 763 * You should always check {@link NetworkInfo#isConnected()} before initiating 764 * network traffic. This may return {@code null} when there is no default 765 * network. 766 * 767 * @return a {@link NetworkInfo} object for the current default network 768 * or {@code null} if no default network is currently active 769 */ 770 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 771 public NetworkInfo getActiveNetworkInfo() { 772 try { 773 return mService.getActiveNetworkInfo(); 774 } catch (RemoteException e) { 775 throw e.rethrowFromSystemServer(); 776 } 777 } 778 779 /** 780 * Returns a {@link Network} object corresponding to the currently active 781 * default data network. In the event that the current active default data 782 * network disconnects, the returned {@code Network} object will no longer 783 * be usable. This will return {@code null} when there is no default 784 * network. 785 * 786 * @return a {@link Network} object for the current default network or 787 * {@code null} if no default network is currently active 788 */ 789 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 790 public Network getActiveNetwork() { 791 try { 792 return mService.getActiveNetwork(); 793 } catch (RemoteException e) { 794 throw e.rethrowFromSystemServer(); 795 } 796 } 797 798 /** 799 * Returns a {@link Network} object corresponding to the currently active 800 * default data network for a specific UID. In the event that the default data 801 * network disconnects, the returned {@code Network} object will no longer 802 * be usable. This will return {@code null} when there is no default 803 * network for the UID. 804 * 805 * @return a {@link Network} object for the current default network for the 806 * given UID or {@code null} if no default network is currently active 807 * 808 * @hide 809 */ 810 @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL) 811 public Network getActiveNetworkForUid(int uid) { 812 return getActiveNetworkForUid(uid, false); 813 } 814 815 /** {@hide} */ 816 public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { 817 try { 818 return mService.getActiveNetworkForUid(uid, ignoreBlocked); 819 } catch (RemoteException e) { 820 throw e.rethrowFromSystemServer(); 821 } 822 } 823 824 /** 825 * Configures an always-on VPN connection through a specific application. 826 * This connection is automatically granted and persisted after a reboot. 827 * 828 * <p>The designated package should declare a {@link VpnService} in its 829 * manifest guarded by {@link android.Manifest.permission.BIND_VPN_SERVICE}, 830 * otherwise the call will fail. 831 * 832 * @param userId The identifier of the user to set an always-on VPN for. 833 * @param vpnPackage The package name for an installed VPN app on the device, or {@code null} 834 * to remove an existing always-on VPN configuration. 835 * @param lockdownEnabled {@code true} to disallow networking when the VPN is not connected or 836 * {@code false} otherwise. 837 * @return {@code true} if the package is set as always-on VPN controller; 838 * {@code false} otherwise. 839 * @hide 840 */ 841 public boolean setAlwaysOnVpnPackageForUser(int userId, @Nullable String vpnPackage, 842 boolean lockdownEnabled) { 843 try { 844 return mService.setAlwaysOnVpnPackage(userId, vpnPackage, lockdownEnabled); 845 } catch (RemoteException e) { 846 throw e.rethrowFromSystemServer(); 847 } 848 } 849 850 /** 851 * Returns the package name of the currently set always-on VPN application. 852 * If there is no always-on VPN set, or the VPN is provided by the system instead 853 * of by an app, {@code null} will be returned. 854 * 855 * @return Package name of VPN controller responsible for always-on VPN, 856 * or {@code null} if none is set. 857 * @hide 858 */ 859 public String getAlwaysOnVpnPackageForUser(int userId) { 860 try { 861 return mService.getAlwaysOnVpnPackage(userId); 862 } catch (RemoteException e) { 863 throw e.rethrowFromSystemServer(); 864 } 865 } 866 867 /** 868 * Returns details about the currently active default data network 869 * for a given uid. This is for internal use only to avoid spying 870 * other apps. 871 * 872 * @return a {@link NetworkInfo} object for the current default network 873 * for the given uid or {@code null} if no default network is 874 * available for the specified uid. 875 * 876 * {@hide} 877 */ 878 @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL) 879 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 880 return getActiveNetworkInfoForUid(uid, false); 881 } 882 883 /** {@hide} */ 884 public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { 885 try { 886 return mService.getActiveNetworkInfoForUid(uid, ignoreBlocked); 887 } catch (RemoteException e) { 888 throw e.rethrowFromSystemServer(); 889 } 890 } 891 892 /** 893 * Returns connection status information about a particular 894 * network type. 895 * 896 * @param networkType integer specifying which networkType in 897 * which you're interested. 898 * @return a {@link NetworkInfo} object for the requested 899 * network type or {@code null} if the type is not 900 * supported by the device. 901 * 902 * @deprecated This method does not support multiple connected networks 903 * of the same type. Use {@link #getAllNetworks} and 904 * {@link #getNetworkInfo(android.net.Network)} instead. 905 */ 906 @Deprecated 907 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 908 public NetworkInfo getNetworkInfo(int networkType) { 909 try { 910 return mService.getNetworkInfo(networkType); 911 } catch (RemoteException e) { 912 throw e.rethrowFromSystemServer(); 913 } 914 } 915 916 /** 917 * Returns connection status information about a particular 918 * Network. 919 * 920 * @param network {@link Network} specifying which network 921 * in which you're interested. 922 * @return a {@link NetworkInfo} object for the requested 923 * network or {@code null} if the {@code Network} 924 * is not valid. 925 */ 926 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 927 public NetworkInfo getNetworkInfo(Network network) { 928 return getNetworkInfoForUid(network, Process.myUid(), false); 929 } 930 931 /** {@hide} */ 932 public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { 933 try { 934 return mService.getNetworkInfoForUid(network, uid, ignoreBlocked); 935 } catch (RemoteException e) { 936 throw e.rethrowFromSystemServer(); 937 } 938 } 939 940 /** 941 * Returns connection status information about all network 942 * types supported by the device. 943 * 944 * @return an array of {@link NetworkInfo} objects. Check each 945 * {@link NetworkInfo#getType} for which type each applies. 946 * 947 * @deprecated This method does not support multiple connected networks 948 * of the same type. Use {@link #getAllNetworks} and 949 * {@link #getNetworkInfo(android.net.Network)} instead. 950 */ 951 @Deprecated 952 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 953 public NetworkInfo[] getAllNetworkInfo() { 954 try { 955 return mService.getAllNetworkInfo(); 956 } catch (RemoteException e) { 957 throw e.rethrowFromSystemServer(); 958 } 959 } 960 961 /** 962 * Returns the {@link Network} object currently serving a given type, or 963 * null if the given type is not connected. 964 * 965 * @hide 966 * @deprecated This method does not support multiple connected networks 967 * of the same type. Use {@link #getAllNetworks} and 968 * {@link #getNetworkInfo(android.net.Network)} instead. 969 */ 970 @Deprecated 971 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 972 public Network getNetworkForType(int networkType) { 973 try { 974 return mService.getNetworkForType(networkType); 975 } catch (RemoteException e) { 976 throw e.rethrowFromSystemServer(); 977 } 978 } 979 980 /** 981 * Returns an array of all {@link Network} currently tracked by the 982 * framework. 983 * 984 * @return an array of {@link Network} objects. 985 */ 986 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 987 public Network[] getAllNetworks() { 988 try { 989 return mService.getAllNetworks(); 990 } catch (RemoteException e) { 991 throw e.rethrowFromSystemServer(); 992 } 993 } 994 995 /** 996 * Returns an array of {@link android.net.NetworkCapabilities} objects, representing 997 * the Networks that applications run by the given user will use by default. 998 * @hide 999 */ 1000 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1001 try { 1002 return mService.getDefaultNetworkCapabilitiesForUser(userId); 1003 } catch (RemoteException e) { 1004 throw e.rethrowFromSystemServer(); 1005 } 1006 } 1007 1008 /** 1009 * Returns the IP information for the current default network. 1010 * 1011 * @return a {@link LinkProperties} object describing the IP info 1012 * for the current default network, or {@code null} if there 1013 * is no current default network. 1014 * 1015 * {@hide} 1016 */ 1017 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1018 public LinkProperties getActiveLinkProperties() { 1019 try { 1020 return mService.getActiveLinkProperties(); 1021 } catch (RemoteException e) { 1022 throw e.rethrowFromSystemServer(); 1023 } 1024 } 1025 1026 /** 1027 * Returns the IP information for a given network type. 1028 * 1029 * @param networkType the network type of interest. 1030 * @return a {@link LinkProperties} object describing the IP info 1031 * for the given networkType, or {@code null} if there is 1032 * no current default network. 1033 * 1034 * {@hide} 1035 * @deprecated This method does not support multiple connected networks 1036 * of the same type. Use {@link #getAllNetworks}, 1037 * {@link #getNetworkInfo(android.net.Network)}, and 1038 * {@link #getLinkProperties(android.net.Network)} instead. 1039 */ 1040 @Deprecated 1041 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1042 public LinkProperties getLinkProperties(int networkType) { 1043 try { 1044 return mService.getLinkPropertiesForType(networkType); 1045 } catch (RemoteException e) { 1046 throw e.rethrowFromSystemServer(); 1047 } 1048 } 1049 1050 /** 1051 * Get the {@link LinkProperties} for the given {@link Network}. This 1052 * will return {@code null} if the network is unknown. 1053 * 1054 * @param network The {@link Network} object identifying the network in question. 1055 * @return The {@link LinkProperties} for the network, or {@code null}. 1056 */ 1057 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1058 public LinkProperties getLinkProperties(Network network) { 1059 try { 1060 return mService.getLinkProperties(network); 1061 } catch (RemoteException e) { 1062 throw e.rethrowFromSystemServer(); 1063 } 1064 } 1065 1066 /** 1067 * Get the {@link android.net.NetworkCapabilities} for the given {@link Network}. This 1068 * will return {@code null} if the network is unknown. 1069 * 1070 * @param network The {@link Network} object identifying the network in question. 1071 * @return The {@link android.net.NetworkCapabilities} for the network, or {@code null}. 1072 */ 1073 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1074 public NetworkCapabilities getNetworkCapabilities(Network network) { 1075 try { 1076 return mService.getNetworkCapabilities(network); 1077 } catch (RemoteException e) { 1078 throw e.rethrowFromSystemServer(); 1079 } 1080 } 1081 1082 /** 1083 * Gets the URL that should be used for resolving whether a captive portal is present. 1084 * 1. This URL should respond with a 204 response to a GET request to indicate no captive 1085 * portal is present. 1086 * 2. This URL must be HTTP as redirect responses are used to find captive portal 1087 * sign-in pages. Captive portals cannot respond to HTTPS requests with redirects. 1088 * 1089 * @hide 1090 */ 1091 @SystemApi 1092 public String getCaptivePortalServerUrl() { 1093 try { 1094 return mService.getCaptivePortalServerUrl(); 1095 } catch (RemoteException e) { 1096 throw e.rethrowFromSystemServer(); 1097 } 1098 } 1099 1100 /** 1101 * Tells the underlying networking system that the caller wants to 1102 * begin using the named feature. The interpretation of {@code feature} 1103 * is completely up to each networking implementation. 1104 * 1105 * <p>This method requires the caller to hold either the 1106 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 1107 * or the ability to modify system settings as determined by 1108 * {@link android.provider.Settings.System#canWrite}.</p> 1109 * 1110 * @param networkType specifies which network the request pertains to 1111 * @param feature the name of the feature to be used 1112 * @return an integer value representing the outcome of the request. 1113 * The interpretation of this value is specific to each networking 1114 * implementation+feature combination, except that the value {@code -1} 1115 * always indicates failure. 1116 * 1117 * @deprecated Deprecated in favor of the cleaner 1118 * {@link #requestNetwork(NetworkRequest, NetworkCallback)} API. 1119 * In {@link VERSION_CODES#M}, and above, this method is unsupported and will 1120 * throw {@code UnsupportedOperationException} if called. 1121 * @removed 1122 */ 1123 @Deprecated 1124 public int startUsingNetworkFeature(int networkType, String feature) { 1125 checkLegacyRoutingApiAccess(); 1126 NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); 1127 if (netCap == null) { 1128 Log.d(TAG, "Can't satisfy startUsingNetworkFeature for " + networkType + ", " + 1129 feature); 1130 return PhoneConstants.APN_REQUEST_FAILED; 1131 } 1132 1133 NetworkRequest request = null; 1134 synchronized (sLegacyRequests) { 1135 LegacyRequest l = sLegacyRequests.get(netCap); 1136 if (l != null) { 1137 Log.d(TAG, "renewing startUsingNetworkFeature request " + l.networkRequest); 1138 renewRequestLocked(l); 1139 if (l.currentNetwork != null) { 1140 return PhoneConstants.APN_ALREADY_ACTIVE; 1141 } else { 1142 return PhoneConstants.APN_REQUEST_STARTED; 1143 } 1144 } 1145 1146 request = requestNetworkForFeatureLocked(netCap); 1147 } 1148 if (request != null) { 1149 Log.d(TAG, "starting startUsingNetworkFeature for request " + request); 1150 return PhoneConstants.APN_REQUEST_STARTED; 1151 } else { 1152 Log.d(TAG, " request Failed"); 1153 return PhoneConstants.APN_REQUEST_FAILED; 1154 } 1155 } 1156 1157 /** 1158 * Tells the underlying networking system that the caller is finished 1159 * using the named feature. The interpretation of {@code feature} 1160 * is completely up to each networking implementation. 1161 * 1162 * <p>This method requires the caller to hold either the 1163 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 1164 * or the ability to modify system settings as determined by 1165 * {@link android.provider.Settings.System#canWrite}.</p> 1166 * 1167 * @param networkType specifies which network the request pertains to 1168 * @param feature the name of the feature that is no longer needed 1169 * @return an integer value representing the outcome of the request. 1170 * The interpretation of this value is specific to each networking 1171 * implementation+feature combination, except that the value {@code -1} 1172 * always indicates failure. 1173 * 1174 * @deprecated Deprecated in favor of the cleaner 1175 * {@link #unregisterNetworkCallback(NetworkCallback)} API. 1176 * In {@link VERSION_CODES#M}, and above, this method is unsupported and will 1177 * throw {@code UnsupportedOperationException} if called. 1178 * @removed 1179 */ 1180 @Deprecated 1181 public int stopUsingNetworkFeature(int networkType, String feature) { 1182 checkLegacyRoutingApiAccess(); 1183 NetworkCapabilities netCap = networkCapabilitiesForFeature(networkType, feature); 1184 if (netCap == null) { 1185 Log.d(TAG, "Can't satisfy stopUsingNetworkFeature for " + networkType + ", " + 1186 feature); 1187 return -1; 1188 } 1189 1190 if (removeRequestForFeature(netCap)) { 1191 Log.d(TAG, "stopUsingNetworkFeature for " + networkType + ", " + feature); 1192 } 1193 return 1; 1194 } 1195 1196 private NetworkCapabilities networkCapabilitiesForFeature(int networkType, String feature) { 1197 if (networkType == TYPE_MOBILE) { 1198 switch (feature) { 1199 case "enableCBS": 1200 return networkCapabilitiesForType(TYPE_MOBILE_CBS); 1201 case "enableDUN": 1202 case "enableDUNAlways": 1203 return networkCapabilitiesForType(TYPE_MOBILE_DUN); 1204 case "enableFOTA": 1205 return networkCapabilitiesForType(TYPE_MOBILE_FOTA); 1206 case "enableHIPRI": 1207 return networkCapabilitiesForType(TYPE_MOBILE_HIPRI); 1208 case "enableIMS": 1209 return networkCapabilitiesForType(TYPE_MOBILE_IMS); 1210 case "enableMMS": 1211 return networkCapabilitiesForType(TYPE_MOBILE_MMS); 1212 case "enableSUPL": 1213 return networkCapabilitiesForType(TYPE_MOBILE_SUPL); 1214 default: 1215 return null; 1216 } 1217 } else if (networkType == TYPE_WIFI && "p2p".equals(feature)) { 1218 return networkCapabilitiesForType(TYPE_WIFI_P2P); 1219 } 1220 return null; 1221 } 1222 1223 /** 1224 * Guess what the network request was trying to say so that the resulting 1225 * network is accessible via the legacy (deprecated) API such as 1226 * requestRouteToHost. 1227 * 1228 * This means we should try to be fairly precise about transport and 1229 * capability but ignore things such as networkSpecifier. 1230 * If the request has more than one transport or capability it doesn't 1231 * match the old legacy requests (they selected only single transport/capability) 1232 * so this function cannot map the request to a single legacy type and 1233 * the resulting network will not be available to the legacy APIs. 1234 * 1235 * This code is only called from the requestNetwork API (L and above). 1236 * 1237 * Setting a legacy type causes CONNECTIVITY_ACTION broadcasts, which are expensive 1238 * because they wake up lots of apps - see http://b/23350688 . So we currently only 1239 * do this for SUPL requests, which are the only ones that we know need it. If 1240 * omitting these broadcasts causes unacceptable app breakage, then for backwards 1241 * compatibility we can send them: 1242 * 1243 * if (targetSdkVersion < Build.VERSION_CODES.M) && // legacy API unsupported >= M 1244 * targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP)) // requestNetwork not present < L 1245 * 1246 * TODO - This should be removed when the legacy APIs are removed. 1247 */ 1248 private int inferLegacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { 1249 if (netCap == null) { 1250 return TYPE_NONE; 1251 } 1252 1253 if (!netCap.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { 1254 return TYPE_NONE; 1255 } 1256 1257 // Do this only for SUPL, until GnssLocationProvider is fixed. http://b/25876485 . 1258 if (!netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { 1259 // NOTE: if this causes app breakage, we should not just comment out this early return; 1260 // instead, we should make this early return conditional on the requesting app's target 1261 // SDK version, as described in the comment above. 1262 return TYPE_NONE; 1263 } 1264 1265 String type = null; 1266 int result = TYPE_NONE; 1267 1268 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { 1269 type = "enableCBS"; 1270 result = TYPE_MOBILE_CBS; 1271 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { 1272 type = "enableIMS"; 1273 result = TYPE_MOBILE_IMS; 1274 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { 1275 type = "enableFOTA"; 1276 result = TYPE_MOBILE_FOTA; 1277 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { 1278 type = "enableDUN"; 1279 result = TYPE_MOBILE_DUN; 1280 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { 1281 type = "enableSUPL"; 1282 result = TYPE_MOBILE_SUPL; 1283 // back out this hack for mms as they no longer need this and it's causing 1284 // device slowdowns - b/23350688 (note, supl still needs this) 1285 //} else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { 1286 // type = "enableMMS"; 1287 // result = TYPE_MOBILE_MMS; 1288 } else if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { 1289 type = "enableHIPRI"; 1290 result = TYPE_MOBILE_HIPRI; 1291 } 1292 if (type != null) { 1293 NetworkCapabilities testCap = networkCapabilitiesForFeature(TYPE_MOBILE, type); 1294 if (testCap.equalsNetCapabilities(netCap) && testCap.equalsTransportTypes(netCap)) { 1295 return result; 1296 } 1297 } 1298 return TYPE_NONE; 1299 } 1300 1301 private int legacyTypeForNetworkCapabilities(NetworkCapabilities netCap) { 1302 if (netCap == null) return TYPE_NONE; 1303 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_CBS)) { 1304 return TYPE_MOBILE_CBS; 1305 } 1306 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_IMS)) { 1307 return TYPE_MOBILE_IMS; 1308 } 1309 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_FOTA)) { 1310 return TYPE_MOBILE_FOTA; 1311 } 1312 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_DUN)) { 1313 return TYPE_MOBILE_DUN; 1314 } 1315 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_SUPL)) { 1316 return TYPE_MOBILE_SUPL; 1317 } 1318 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_MMS)) { 1319 return TYPE_MOBILE_MMS; 1320 } 1321 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { 1322 return TYPE_MOBILE_HIPRI; 1323 } 1324 if (netCap.hasCapability(NetworkCapabilities.NET_CAPABILITY_WIFI_P2P)) { 1325 return TYPE_WIFI_P2P; 1326 } 1327 return TYPE_NONE; 1328 } 1329 1330 private static class LegacyRequest { 1331 NetworkCapabilities networkCapabilities; 1332 NetworkRequest networkRequest; 1333 int expireSequenceNumber; 1334 Network currentNetwork; 1335 int delay = -1; 1336 1337 private void clearDnsBinding() { 1338 if (currentNetwork != null) { 1339 currentNetwork = null; 1340 setProcessDefaultNetworkForHostResolution(null); 1341 } 1342 } 1343 1344 NetworkCallback networkCallback = new NetworkCallback() { 1345 @Override 1346 public void onAvailable(Network network) { 1347 currentNetwork = network; 1348 Log.d(TAG, "startUsingNetworkFeature got Network:" + network); 1349 setProcessDefaultNetworkForHostResolution(network); 1350 } 1351 @Override 1352 public void onLost(Network network) { 1353 if (network.equals(currentNetwork)) clearDnsBinding(); 1354 Log.d(TAG, "startUsingNetworkFeature lost Network:" + network); 1355 } 1356 }; 1357 } 1358 1359 private static HashMap<NetworkCapabilities, LegacyRequest> sLegacyRequests = 1360 new HashMap<NetworkCapabilities, LegacyRequest>(); 1361 1362 private NetworkRequest findRequestForFeature(NetworkCapabilities netCap) { 1363 synchronized (sLegacyRequests) { 1364 LegacyRequest l = sLegacyRequests.get(netCap); 1365 if (l != null) return l.networkRequest; 1366 } 1367 return null; 1368 } 1369 1370 private void renewRequestLocked(LegacyRequest l) { 1371 l.expireSequenceNumber++; 1372 Log.d(TAG, "renewing request to seqNum " + l.expireSequenceNumber); 1373 sendExpireMsgForFeature(l.networkCapabilities, l.expireSequenceNumber, l.delay); 1374 } 1375 1376 private void expireRequest(NetworkCapabilities netCap, int sequenceNum) { 1377 int ourSeqNum = -1; 1378 synchronized (sLegacyRequests) { 1379 LegacyRequest l = sLegacyRequests.get(netCap); 1380 if (l == null) return; 1381 ourSeqNum = l.expireSequenceNumber; 1382 if (l.expireSequenceNumber == sequenceNum) removeRequestForFeature(netCap); 1383 } 1384 Log.d(TAG, "expireRequest with " + ourSeqNum + ", " + sequenceNum); 1385 } 1386 1387 private NetworkRequest requestNetworkForFeatureLocked(NetworkCapabilities netCap) { 1388 int delay = -1; 1389 int type = legacyTypeForNetworkCapabilities(netCap); 1390 try { 1391 delay = mService.getRestoreDefaultNetworkDelay(type); 1392 } catch (RemoteException e) { 1393 throw e.rethrowFromSystemServer(); 1394 } 1395 LegacyRequest l = new LegacyRequest(); 1396 l.networkCapabilities = netCap; 1397 l.delay = delay; 1398 l.expireSequenceNumber = 0; 1399 l.networkRequest = sendRequestForNetwork( 1400 netCap, l.networkCallback, 0, REQUEST, type, getDefaultHandler()); 1401 if (l.networkRequest == null) return null; 1402 sLegacyRequests.put(netCap, l); 1403 sendExpireMsgForFeature(netCap, l.expireSequenceNumber, delay); 1404 return l.networkRequest; 1405 } 1406 1407 private void sendExpireMsgForFeature(NetworkCapabilities netCap, int seqNum, int delay) { 1408 if (delay >= 0) { 1409 Log.d(TAG, "sending expire msg with seqNum " + seqNum + " and delay " + delay); 1410 CallbackHandler handler = getDefaultHandler(); 1411 Message msg = handler.obtainMessage(EXPIRE_LEGACY_REQUEST, seqNum, 0, netCap); 1412 handler.sendMessageDelayed(msg, delay); 1413 } 1414 } 1415 1416 private boolean removeRequestForFeature(NetworkCapabilities netCap) { 1417 final LegacyRequest l; 1418 synchronized (sLegacyRequests) { 1419 l = sLegacyRequests.remove(netCap); 1420 } 1421 if (l == null) return false; 1422 unregisterNetworkCallback(l.networkCallback); 1423 l.clearDnsBinding(); 1424 return true; 1425 } 1426 1427 private static final SparseIntArray sLegacyTypeToTransport = new SparseIntArray(); 1428 static { 1429 sLegacyTypeToTransport.put(TYPE_MOBILE, NetworkCapabilities.TRANSPORT_CELLULAR); 1430 sLegacyTypeToTransport.put(TYPE_MOBILE_CBS, NetworkCapabilities.TRANSPORT_CELLULAR); 1431 sLegacyTypeToTransport.put(TYPE_MOBILE_DUN, NetworkCapabilities.TRANSPORT_CELLULAR); 1432 sLegacyTypeToTransport.put(TYPE_MOBILE_FOTA, NetworkCapabilities.TRANSPORT_CELLULAR); 1433 sLegacyTypeToTransport.put(TYPE_MOBILE_HIPRI, NetworkCapabilities.TRANSPORT_CELLULAR); 1434 sLegacyTypeToTransport.put(TYPE_MOBILE_IMS, NetworkCapabilities.TRANSPORT_CELLULAR); 1435 sLegacyTypeToTransport.put(TYPE_MOBILE_MMS, NetworkCapabilities.TRANSPORT_CELLULAR); 1436 sLegacyTypeToTransport.put(TYPE_MOBILE_SUPL, NetworkCapabilities.TRANSPORT_CELLULAR); 1437 sLegacyTypeToTransport.put(TYPE_WIFI, NetworkCapabilities.TRANSPORT_WIFI); 1438 sLegacyTypeToTransport.put(TYPE_WIFI_P2P, NetworkCapabilities.TRANSPORT_WIFI); 1439 sLegacyTypeToTransport.put(TYPE_BLUETOOTH, NetworkCapabilities.TRANSPORT_BLUETOOTH); 1440 sLegacyTypeToTransport.put(TYPE_ETHERNET, NetworkCapabilities.TRANSPORT_ETHERNET); 1441 } 1442 1443 private static final SparseIntArray sLegacyTypeToCapability = new SparseIntArray(); 1444 static { 1445 sLegacyTypeToCapability.put(TYPE_MOBILE_CBS, NetworkCapabilities.NET_CAPABILITY_CBS); 1446 sLegacyTypeToCapability.put(TYPE_MOBILE_DUN, NetworkCapabilities.NET_CAPABILITY_DUN); 1447 sLegacyTypeToCapability.put(TYPE_MOBILE_FOTA, NetworkCapabilities.NET_CAPABILITY_FOTA); 1448 sLegacyTypeToCapability.put(TYPE_MOBILE_IMS, NetworkCapabilities.NET_CAPABILITY_IMS); 1449 sLegacyTypeToCapability.put(TYPE_MOBILE_MMS, NetworkCapabilities.NET_CAPABILITY_MMS); 1450 sLegacyTypeToCapability.put(TYPE_MOBILE_SUPL, NetworkCapabilities.NET_CAPABILITY_SUPL); 1451 sLegacyTypeToCapability.put(TYPE_WIFI_P2P, NetworkCapabilities.NET_CAPABILITY_WIFI_P2P); 1452 } 1453 1454 /** 1455 * Given a legacy type (TYPE_WIFI, ...) returns a NetworkCapabilities 1456 * instance suitable for registering a request or callback. Throws an 1457 * IllegalArgumentException if no mapping from the legacy type to 1458 * NetworkCapabilities is known. 1459 * 1460 * @hide 1461 */ 1462 public static NetworkCapabilities networkCapabilitiesForType(int type) { 1463 final NetworkCapabilities nc = new NetworkCapabilities(); 1464 1465 // Map from type to transports. 1466 final int NOT_FOUND = -1; 1467 final int transport = sLegacyTypeToTransport.get(type, NOT_FOUND); 1468 if (transport == NOT_FOUND) { 1469 throw new IllegalArgumentException("unknown legacy type: " + type); 1470 } 1471 nc.addTransportType(transport); 1472 1473 // Map from type to capabilities. 1474 nc.addCapability(sLegacyTypeToCapability.get( 1475 type, NetworkCapabilities.NET_CAPABILITY_INTERNET)); 1476 nc.maybeMarkCapabilitiesRestricted(); 1477 return nc; 1478 } 1479 1480 /** @hide */ 1481 public static class PacketKeepaliveCallback { 1482 /** The requested keepalive was successfully started. */ 1483 public void onStarted() {} 1484 /** The keepalive was successfully stopped. */ 1485 public void onStopped() {} 1486 /** An error occurred. */ 1487 public void onError(int error) {} 1488 } 1489 1490 /** 1491 * Allows applications to request that the system periodically send specific packets on their 1492 * behalf, using hardware offload to save battery power. 1493 * 1494 * To request that the system send keepalives, call one of the methods that return a 1495 * {@link ConnectivityManager.PacketKeepalive} object, such as {@link #startNattKeepalive}, 1496 * passing in a non-null callback. If the callback is successfully started, the callback's 1497 * {@code onStarted} method will be called. If an error occurs, {@code onError} will be called, 1498 * specifying one of the {@code ERROR_*} constants in this class. 1499 * 1500 * To stop an existing keepalive, call {@link stop}. The system will call {@code onStopped} if 1501 * the operation was successfull or {@code onError} if an error occurred. 1502 * 1503 * @hide 1504 */ 1505 public class PacketKeepalive { 1506 1507 private static final String TAG = "PacketKeepalive"; 1508 1509 /** @hide */ 1510 public static final int SUCCESS = 0; 1511 1512 /** @hide */ 1513 public static final int NO_KEEPALIVE = -1; 1514 1515 /** @hide */ 1516 public static final int BINDER_DIED = -10; 1517 1518 /** The specified {@code Network} is not connected. */ 1519 public static final int ERROR_INVALID_NETWORK = -20; 1520 /** The specified IP addresses are invalid. For example, the specified source IP address is 1521 * not configured on the specified {@code Network}. */ 1522 public static final int ERROR_INVALID_IP_ADDRESS = -21; 1523 /** The requested port is invalid. */ 1524 public static final int ERROR_INVALID_PORT = -22; 1525 /** The packet length is invalid (e.g., too long). */ 1526 public static final int ERROR_INVALID_LENGTH = -23; 1527 /** The packet transmission interval is invalid (e.g., too short). */ 1528 public static final int ERROR_INVALID_INTERVAL = -24; 1529 1530 /** The hardware does not support this request. */ 1531 public static final int ERROR_HARDWARE_UNSUPPORTED = -30; 1532 /** The hardware returned an error. */ 1533 public static final int ERROR_HARDWARE_ERROR = -31; 1534 1535 public static final int NATT_PORT = 4500; 1536 1537 private final Network mNetwork; 1538 private final PacketKeepaliveCallback mCallback; 1539 private final Looper mLooper; 1540 private final Messenger mMessenger; 1541 1542 private volatile Integer mSlot; 1543 1544 void stopLooper() { 1545 mLooper.quit(); 1546 } 1547 1548 public void stop() { 1549 try { 1550 mService.stopKeepalive(mNetwork, mSlot); 1551 } catch (RemoteException e) { 1552 Log.e(TAG, "Error stopping packet keepalive: ", e); 1553 stopLooper(); 1554 } 1555 } 1556 1557 private PacketKeepalive(Network network, PacketKeepaliveCallback callback) { 1558 checkNotNull(network, "network cannot be null"); 1559 checkNotNull(callback, "callback cannot be null"); 1560 mNetwork = network; 1561 mCallback = callback; 1562 HandlerThread thread = new HandlerThread(TAG); 1563 thread.start(); 1564 mLooper = thread.getLooper(); 1565 mMessenger = new Messenger(new Handler(mLooper) { 1566 @Override 1567 public void handleMessage(Message message) { 1568 switch (message.what) { 1569 case NetworkAgent.EVENT_PACKET_KEEPALIVE: 1570 int error = message.arg2; 1571 try { 1572 if (error == SUCCESS) { 1573 if (mSlot == null) { 1574 mSlot = message.arg1; 1575 mCallback.onStarted(); 1576 } else { 1577 mSlot = null; 1578 stopLooper(); 1579 mCallback.onStopped(); 1580 } 1581 } else { 1582 stopLooper(); 1583 mCallback.onError(error); 1584 } 1585 } catch (Exception e) { 1586 Log.e(TAG, "Exception in keepalive callback(" + error + ")", e); 1587 } 1588 break; 1589 default: 1590 Log.e(TAG, "Unhandled message " + Integer.toHexString(message.what)); 1591 break; 1592 } 1593 } 1594 }); 1595 } 1596 } 1597 1598 /** 1599 * Starts an IPsec NAT-T keepalive packet with the specified parameters. 1600 * 1601 * @hide 1602 */ 1603 public PacketKeepalive startNattKeepalive( 1604 Network network, int intervalSeconds, PacketKeepaliveCallback callback, 1605 InetAddress srcAddr, int srcPort, InetAddress dstAddr) { 1606 final PacketKeepalive k = new PacketKeepalive(network, callback); 1607 try { 1608 mService.startNattKeepalive(network, intervalSeconds, k.mMessenger, new Binder(), 1609 srcAddr.getHostAddress(), srcPort, dstAddr.getHostAddress()); 1610 } catch (RemoteException e) { 1611 Log.e(TAG, "Error starting packet keepalive: ", e); 1612 k.stopLooper(); 1613 return null; 1614 } 1615 return k; 1616 } 1617 1618 /** 1619 * Ensure that a network route exists to deliver traffic to the specified 1620 * host via the specified network interface. An attempt to add a route that 1621 * already exists is ignored, but treated as successful. 1622 * 1623 * <p>This method requires the caller to hold either the 1624 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 1625 * or the ability to modify system settings as determined by 1626 * {@link android.provider.Settings.System#canWrite}.</p> 1627 * 1628 * @param networkType the type of the network over which traffic to the specified 1629 * host is to be routed 1630 * @param hostAddress the IP address of the host to which the route is desired 1631 * @return {@code true} on success, {@code false} on failure 1632 * 1633 * @deprecated Deprecated in favor of the 1634 * {@link #requestNetwork(NetworkRequest, NetworkCallback)}, 1635 * {@link #bindProcessToNetwork} and {@link Network#getSocketFactory} API. 1636 * In {@link VERSION_CODES#M}, and above, this method is unsupported and will 1637 * throw {@code UnsupportedOperationException} if called. 1638 * @removed 1639 */ 1640 @Deprecated 1641 public boolean requestRouteToHost(int networkType, int hostAddress) { 1642 return requestRouteToHostAddress(networkType, NetworkUtils.intToInetAddress(hostAddress)); 1643 } 1644 1645 /** 1646 * Ensure that a network route exists to deliver traffic to the specified 1647 * host via the specified network interface. An attempt to add a route that 1648 * already exists is ignored, but treated as successful. 1649 * 1650 * <p>This method requires the caller to hold either the 1651 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 1652 * or the ability to modify system settings as determined by 1653 * {@link android.provider.Settings.System#canWrite}.</p> 1654 * 1655 * @param networkType the type of the network over which traffic to the specified 1656 * host is to be routed 1657 * @param hostAddress the IP address of the host to which the route is desired 1658 * @return {@code true} on success, {@code false} on failure 1659 * @hide 1660 * @deprecated Deprecated in favor of the {@link #requestNetwork} and 1661 * {@link #bindProcessToNetwork} API. 1662 */ 1663 @Deprecated 1664 public boolean requestRouteToHostAddress(int networkType, InetAddress hostAddress) { 1665 checkLegacyRoutingApiAccess(); 1666 try { 1667 return mService.requestRouteToHostAddress(networkType, hostAddress.getAddress()); 1668 } catch (RemoteException e) { 1669 throw e.rethrowFromSystemServer(); 1670 } 1671 } 1672 1673 /** 1674 * Returns the value of the setting for background data usage. If false, 1675 * applications should not use the network if the application is not in the 1676 * foreground. Developers should respect this setting, and check the value 1677 * of this before performing any background data operations. 1678 * <p> 1679 * All applications that have background services that use the network 1680 * should listen to {@link #ACTION_BACKGROUND_DATA_SETTING_CHANGED}. 1681 * <p> 1682 * @deprecated As of {@link VERSION_CODES#ICE_CREAM_SANDWICH}, availability of 1683 * background data depends on several combined factors, and this method will 1684 * always return {@code true}. Instead, when background data is unavailable, 1685 * {@link #getActiveNetworkInfo()} will now appear disconnected. 1686 * 1687 * @return Whether background data usage is allowed. 1688 */ 1689 @Deprecated 1690 public boolean getBackgroundDataSetting() { 1691 // assume that background data is allowed; final authority is 1692 // NetworkInfo which may be blocked. 1693 return true; 1694 } 1695 1696 /** 1697 * Sets the value of the setting for background data usage. 1698 * 1699 * @param allowBackgroundData Whether an application should use data while 1700 * it is in the background. 1701 * 1702 * @attr ref android.Manifest.permission#CHANGE_BACKGROUND_DATA_SETTING 1703 * @see #getBackgroundDataSetting() 1704 * @hide 1705 */ 1706 @Deprecated 1707 public void setBackgroundDataSetting(boolean allowBackgroundData) { 1708 // ignored 1709 } 1710 1711 /** 1712 * Return quota status for the current active network, or {@code null} if no 1713 * network is active. Quota status can change rapidly, so these values 1714 * shouldn't be cached. 1715 * 1716 * @hide 1717 */ 1718 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1719 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1720 try { 1721 return mService.getActiveNetworkQuotaInfo(); 1722 } catch (RemoteException e) { 1723 throw e.rethrowFromSystemServer(); 1724 } 1725 } 1726 1727 /** 1728 * @hide 1729 * @deprecated Talk to TelephonyManager directly 1730 */ 1731 @Deprecated 1732 public boolean getMobileDataEnabled() { 1733 IBinder b = ServiceManager.getService(Context.TELEPHONY_SERVICE); 1734 if (b != null) { 1735 try { 1736 ITelephony it = ITelephony.Stub.asInterface(b); 1737 int subId = SubscriptionManager.getDefaultDataSubscriptionId(); 1738 Log.d("ConnectivityManager", "getMobileDataEnabled()+ subId=" + subId); 1739 boolean retVal = it.getDataEnabled(subId); 1740 Log.d("ConnectivityManager", "getMobileDataEnabled()- subId=" + subId 1741 + " retVal=" + retVal); 1742 return retVal; 1743 } catch (RemoteException e) { 1744 throw e.rethrowFromSystemServer(); 1745 } 1746 } 1747 Log.d("ConnectivityManager", "getMobileDataEnabled()- remote exception retVal=false"); 1748 return false; 1749 } 1750 1751 /** 1752 * Callback for use with {@link ConnectivityManager#addDefaultNetworkActiveListener} 1753 * to find out when the system default network has gone in to a high power state. 1754 */ 1755 public interface OnNetworkActiveListener { 1756 /** 1757 * Called on the main thread of the process to report that the current data network 1758 * has become active, and it is now a good time to perform any pending network 1759 * operations. Note that this listener only tells you when the network becomes 1760 * active; if at any other time you want to know whether it is active (and thus okay 1761 * to initiate network traffic), you can retrieve its instantaneous state with 1762 * {@link ConnectivityManager#isDefaultNetworkActive}. 1763 */ 1764 public void onNetworkActive(); 1765 } 1766 1767 private INetworkManagementService getNetworkManagementService() { 1768 synchronized (this) { 1769 if (mNMService != null) { 1770 return mNMService; 1771 } 1772 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 1773 mNMService = INetworkManagementService.Stub.asInterface(b); 1774 return mNMService; 1775 } 1776 } 1777 1778 private final ArrayMap<OnNetworkActiveListener, INetworkActivityListener> 1779 mNetworkActivityListeners 1780 = new ArrayMap<OnNetworkActiveListener, INetworkActivityListener>(); 1781 1782 /** 1783 * Start listening to reports when the system's default data network is active, meaning it is 1784 * a good time to perform network traffic. Use {@link #isDefaultNetworkActive()} 1785 * to determine the current state of the system's default network after registering the 1786 * listener. 1787 * <p> 1788 * If the process default network has been set with 1789 * {@link ConnectivityManager#bindProcessToNetwork} this function will not 1790 * reflect the process's default, but the system default. 1791 * 1792 * @param l The listener to be told when the network is active. 1793 */ 1794 public void addDefaultNetworkActiveListener(final OnNetworkActiveListener l) { 1795 INetworkActivityListener rl = new INetworkActivityListener.Stub() { 1796 @Override 1797 public void onNetworkActive() throws RemoteException { 1798 l.onNetworkActive(); 1799 } 1800 }; 1801 1802 try { 1803 getNetworkManagementService().registerNetworkActivityListener(rl); 1804 mNetworkActivityListeners.put(l, rl); 1805 } catch (RemoteException e) { 1806 throw e.rethrowFromSystemServer(); 1807 } 1808 } 1809 1810 /** 1811 * Remove network active listener previously registered with 1812 * {@link #addDefaultNetworkActiveListener}. 1813 * 1814 * @param l Previously registered listener. 1815 */ 1816 public void removeDefaultNetworkActiveListener(OnNetworkActiveListener l) { 1817 INetworkActivityListener rl = mNetworkActivityListeners.get(l); 1818 if (rl == null) { 1819 throw new IllegalArgumentException("Listener not registered: " + l); 1820 } 1821 try { 1822 getNetworkManagementService().unregisterNetworkActivityListener(rl); 1823 } catch (RemoteException e) { 1824 throw e.rethrowFromSystemServer(); 1825 } 1826 } 1827 1828 /** 1829 * Return whether the data network is currently active. An active network means that 1830 * it is currently in a high power state for performing data transmission. On some 1831 * types of networks, it may be expensive to move and stay in such a state, so it is 1832 * more power efficient to batch network traffic together when the radio is already in 1833 * this state. This method tells you whether right now is currently a good time to 1834 * initiate network traffic, as the network is already active. 1835 */ 1836 public boolean isDefaultNetworkActive() { 1837 try { 1838 return getNetworkManagementService().isNetworkActive(); 1839 } catch (RemoteException e) { 1840 throw e.rethrowFromSystemServer(); 1841 } 1842 } 1843 1844 /** 1845 * {@hide} 1846 */ 1847 public ConnectivityManager(Context context, IConnectivityManager service) { 1848 mContext = checkNotNull(context, "missing context"); 1849 mService = checkNotNull(service, "missing IConnectivityManager"); 1850 sInstance = this; 1851 } 1852 1853 /** {@hide} */ 1854 public static ConnectivityManager from(Context context) { 1855 return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 1856 } 1857 1858 /* TODO: These permissions checks don't belong in client-side code. Move them to 1859 * services.jar, possibly in com.android.server.net. */ 1860 1861 /** {@hide} */ 1862 public static final boolean checkChangePermission(Context context) { 1863 int uid = Binder.getCallingUid(); 1864 return Settings.checkAndNoteChangeNetworkStateOperation(context, uid, Settings 1865 .getPackageNameForUid(context, uid), false /* throwException */); 1866 } 1867 1868 /** {@hide} */ 1869 public static final void enforceChangePermission(Context context) { 1870 int uid = Binder.getCallingUid(); 1871 Settings.checkAndNoteChangeNetworkStateOperation(context, uid, Settings 1872 .getPackageNameForUid(context, uid), true /* throwException */); 1873 } 1874 1875 /** {@hide */ 1876 public static final void enforceTetherChangePermission(Context context) { 1877 if (context.getResources().getStringArray( 1878 com.android.internal.R.array.config_mobile_hotspot_provision_app).length == 2) { 1879 // Have a provisioning app - must only let system apps (which check this app) 1880 // turn on tethering 1881 context.enforceCallingOrSelfPermission( 1882 android.Manifest.permission.TETHER_PRIVILEGED, "ConnectivityService"); 1883 } else { 1884 int uid = Binder.getCallingUid(); 1885 Settings.checkAndNoteWriteSettingsOperation(context, uid, Settings 1886 .getPackageNameForUid(context, uid), true /* throwException */); 1887 } 1888 } 1889 1890 /** 1891 * @deprecated - use getSystemService. This is a kludge to support static access in certain 1892 * situations where a Context pointer is unavailable. 1893 * @hide 1894 */ 1895 @Deprecated 1896 static ConnectivityManager getInstanceOrNull() { 1897 return sInstance; 1898 } 1899 1900 /** 1901 * @deprecated - use getSystemService. This is a kludge to support static access in certain 1902 * situations where a Context pointer is unavailable. 1903 * @hide 1904 */ 1905 @Deprecated 1906 private static ConnectivityManager getInstance() { 1907 if (getInstanceOrNull() == null) { 1908 throw new IllegalStateException("No ConnectivityManager yet constructed"); 1909 } 1910 return getInstanceOrNull(); 1911 } 1912 1913 /** 1914 * Get the set of tetherable, available interfaces. This list is limited by 1915 * device configuration and current interface existence. 1916 * 1917 * @return an array of 0 or more Strings of tetherable interface names. 1918 * 1919 * {@hide} 1920 */ 1921 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1922 public String[] getTetherableIfaces() { 1923 try { 1924 return mService.getTetherableIfaces(); 1925 } catch (RemoteException e) { 1926 throw e.rethrowFromSystemServer(); 1927 } 1928 } 1929 1930 /** 1931 * Get the set of tethered interfaces. 1932 * 1933 * @return an array of 0 or more String of currently tethered interface names. 1934 * 1935 * {@hide} 1936 */ 1937 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1938 public String[] getTetheredIfaces() { 1939 try { 1940 return mService.getTetheredIfaces(); 1941 } catch (RemoteException e) { 1942 throw e.rethrowFromSystemServer(); 1943 } 1944 } 1945 1946 /** 1947 * Get the set of interface names which attempted to tether but 1948 * failed. Re-attempting to tether may cause them to reset to the Tethered 1949 * state. Alternatively, causing the interface to be destroyed and recreated 1950 * may cause them to reset to the available state. 1951 * {@link ConnectivityManager#getLastTetherError} can be used to get more 1952 * information on the cause of the errors. 1953 * 1954 * @return an array of 0 or more String indicating the interface names 1955 * which failed to tether. 1956 * 1957 * {@hide} 1958 */ 1959 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 1960 public String[] getTetheringErroredIfaces() { 1961 try { 1962 return mService.getTetheringErroredIfaces(); 1963 } catch (RemoteException e) { 1964 throw e.rethrowFromSystemServer(); 1965 } 1966 } 1967 1968 /** 1969 * Get the set of tethered dhcp ranges. 1970 * 1971 * @return an array of 0 or more {@code String} of tethered dhcp ranges. 1972 * {@hide} 1973 */ 1974 public String[] getTetheredDhcpRanges() { 1975 try { 1976 return mService.getTetheredDhcpRanges(); 1977 } catch (RemoteException e) { 1978 throw e.rethrowFromSystemServer(); 1979 } 1980 } 1981 1982 /** 1983 * Attempt to tether the named interface. This will setup a dhcp server 1984 * on the interface, forward and NAT IP packets and forward DNS requests 1985 * to the best active upstream network interface. Note that if no upstream 1986 * IP network interface is available, dhcp will still run and traffic will be 1987 * allowed between the tethered devices and this device, though upstream net 1988 * access will of course fail until an upstream network interface becomes 1989 * active. 1990 * 1991 * <p>This method requires the caller to hold either the 1992 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 1993 * or the ability to modify system settings as determined by 1994 * {@link android.provider.Settings.System#canWrite}.</p> 1995 * 1996 * <p>WARNING: New clients should not use this function. The only usages should be in PanService 1997 * and WifiStateMachine which need direct access. All other clients should use 1998 * {@link #startTethering} and {@link #stopTethering} which encapsulate proper provisioning 1999 * logic.</p> 2000 * 2001 * @param iface the interface name to tether. 2002 * @return error a {@code TETHER_ERROR} value indicating success or failure type 2003 * 2004 * {@hide} 2005 */ 2006 public int tether(String iface) { 2007 try { 2008 return mService.tether(iface); 2009 } catch (RemoteException e) { 2010 throw e.rethrowFromSystemServer(); 2011 } 2012 } 2013 2014 /** 2015 * Stop tethering the named interface. 2016 * 2017 * <p>This method requires the caller to hold either the 2018 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 2019 * or the ability to modify system settings as determined by 2020 * {@link android.provider.Settings.System#canWrite}.</p> 2021 * 2022 * <p>WARNING: New clients should not use this function. The only usages should be in PanService 2023 * and WifiStateMachine which need direct access. All other clients should use 2024 * {@link #startTethering} and {@link #stopTethering} which encapsulate proper provisioning 2025 * logic.</p> 2026 * 2027 * @param iface the interface name to untether. 2028 * @return error a {@code TETHER_ERROR} value indicating success or failure type 2029 * 2030 * {@hide} 2031 */ 2032 public int untether(String iface) { 2033 try { 2034 return mService.untether(iface); 2035 } catch (RemoteException e) { 2036 throw e.rethrowFromSystemServer(); 2037 } 2038 } 2039 2040 /** 2041 * Check if the device allows for tethering. It may be disabled via 2042 * {@code ro.tether.denied} system property, Settings.TETHER_SUPPORTED or 2043 * due to device configuration. 2044 * 2045 * @return a boolean - {@code true} indicating Tethering is supported. 2046 * 2047 * {@hide} 2048 */ 2049 @SystemApi 2050 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 2051 public boolean isTetheringSupported() { 2052 try { 2053 return mService.isTetheringSupported(); 2054 } catch (RemoteException e) { 2055 throw e.rethrowFromSystemServer(); 2056 } 2057 } 2058 2059 /** 2060 * Callback for use with {@link #startTethering} to find out whether tethering succeeded. 2061 * @hide 2062 */ 2063 @SystemApi 2064 public static abstract class OnStartTetheringCallback { 2065 /** 2066 * Called when tethering has been successfully started. 2067 */ 2068 public void onTetheringStarted() {}; 2069 2070 /** 2071 * Called when starting tethering failed. 2072 */ 2073 public void onTetheringFailed() {}; 2074 } 2075 2076 /** 2077 * Convenient overload for 2078 * {@link #startTethering(int, boolean, OnStartTetheringCallback, Handler)} which passes a null 2079 * handler to run on the current thread's {@link Looper}. 2080 * @hide 2081 */ 2082 @SystemApi 2083 public void startTethering(int type, boolean showProvisioningUi, 2084 final OnStartTetheringCallback callback) { 2085 startTethering(type, showProvisioningUi, callback, null); 2086 } 2087 2088 /** 2089 * Runs tether provisioning for the given type if needed and then starts tethering if 2090 * the check succeeds. If no carrier provisioning is required for tethering, tethering is 2091 * enabled immediately. If provisioning fails, tethering will not be enabled. It also 2092 * schedules tether provisioning re-checks if appropriate. 2093 * 2094 * @param type The type of tethering to start. Must be one of 2095 * {@link ConnectivityManager.TETHERING_WIFI}, 2096 * {@link ConnectivityManager.TETHERING_USB}, or 2097 * {@link ConnectivityManager.TETHERING_BLUETOOTH}. 2098 * @param showProvisioningUi a boolean indicating to show the provisioning app UI if there 2099 * is one. This should be true the first time this function is called and also any time 2100 * the user can see this UI. It gives users information from their carrier about the 2101 * check failing and how they can sign up for tethering if possible. 2102 * @param callback an {@link OnStartTetheringCallback} which will be called to notify the caller 2103 * of the result of trying to tether. 2104 * @param handler {@link Handler} to specify the thread upon which the callback will be invoked. 2105 * @hide 2106 */ 2107 @SystemApi 2108 @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) 2109 public void startTethering(int type, boolean showProvisioningUi, 2110 final OnStartTetheringCallback callback, Handler handler) { 2111 checkNotNull(callback, "OnStartTetheringCallback cannot be null."); 2112 2113 ResultReceiver wrappedCallback = new ResultReceiver(handler) { 2114 @Override 2115 protected void onReceiveResult(int resultCode, Bundle resultData) { 2116 if (resultCode == TETHER_ERROR_NO_ERROR) { 2117 callback.onTetheringStarted(); 2118 } else { 2119 callback.onTetheringFailed(); 2120 } 2121 } 2122 }; 2123 2124 try { 2125 mService.startTethering(type, wrappedCallback, showProvisioningUi); 2126 } catch (RemoteException e) { 2127 Log.e(TAG, "Exception trying to start tethering.", e); 2128 wrappedCallback.send(TETHER_ERROR_SERVICE_UNAVAIL, null); 2129 } 2130 } 2131 2132 /** 2133 * Stops tethering for the given type. Also cancels any provisioning rechecks for that type if 2134 * applicable. 2135 * 2136 * @param type The type of tethering to stop. Must be one of 2137 * {@link ConnectivityManager.TETHERING_WIFI}, 2138 * {@link ConnectivityManager.TETHERING_USB}, or 2139 * {@link ConnectivityManager.TETHERING_BLUETOOTH}. 2140 * @hide 2141 */ 2142 @SystemApi 2143 @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) 2144 public void stopTethering(int type) { 2145 try { 2146 mService.stopTethering(type); 2147 } catch (RemoteException e) { 2148 throw e.rethrowFromSystemServer(); 2149 } 2150 } 2151 2152 /** 2153 * Get the list of regular expressions that define any tetherable 2154 * USB network interfaces. If USB tethering is not supported by the 2155 * device, this list should be empty. 2156 * 2157 * @return an array of 0 or more regular expression Strings defining 2158 * what interfaces are considered tetherable usb interfaces. 2159 * 2160 * {@hide} 2161 */ 2162 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 2163 public String[] getTetherableUsbRegexs() { 2164 try { 2165 return mService.getTetherableUsbRegexs(); 2166 } catch (RemoteException e) { 2167 throw e.rethrowFromSystemServer(); 2168 } 2169 } 2170 2171 /** 2172 * Get the list of regular expressions that define any tetherable 2173 * Wifi network interfaces. If Wifi tethering is not supported by the 2174 * device, this list should be empty. 2175 * 2176 * @return an array of 0 or more regular expression Strings defining 2177 * what interfaces are considered tetherable wifi interfaces. 2178 * 2179 * {@hide} 2180 */ 2181 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 2182 public String[] getTetherableWifiRegexs() { 2183 try { 2184 return mService.getTetherableWifiRegexs(); 2185 } catch (RemoteException e) { 2186 throw e.rethrowFromSystemServer(); 2187 } 2188 } 2189 2190 /** 2191 * Get the list of regular expressions that define any tetherable 2192 * Bluetooth network interfaces. If Bluetooth tethering is not supported by the 2193 * device, this list should be empty. 2194 * 2195 * @return an array of 0 or more regular expression Strings defining 2196 * what interfaces are considered tetherable bluetooth interfaces. 2197 * 2198 * {@hide} 2199 */ 2200 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 2201 public String[] getTetherableBluetoothRegexs() { 2202 try { 2203 return mService.getTetherableBluetoothRegexs(); 2204 } catch (RemoteException e) { 2205 throw e.rethrowFromSystemServer(); 2206 } 2207 } 2208 2209 /** 2210 * Attempt to both alter the mode of USB and Tethering of USB. A 2211 * utility method to deal with some of the complexity of USB - will 2212 * attempt to switch to Rndis and subsequently tether the resulting 2213 * interface on {@code true} or turn off tethering and switch off 2214 * Rndis on {@code false}. 2215 * 2216 * <p>This method requires the caller to hold either the 2217 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 2218 * or the ability to modify system settings as determined by 2219 * {@link android.provider.Settings.System#canWrite}.</p> 2220 * 2221 * @param enable a boolean - {@code true} to enable tethering 2222 * @return error a {@code TETHER_ERROR} value indicating success or failure type 2223 * 2224 * {@hide} 2225 */ 2226 public int setUsbTethering(boolean enable) { 2227 try { 2228 return mService.setUsbTethering(enable); 2229 } catch (RemoteException e) { 2230 throw e.rethrowFromSystemServer(); 2231 } 2232 } 2233 2234 /** {@hide} */ 2235 public static final int TETHER_ERROR_NO_ERROR = 0; 2236 /** {@hide} */ 2237 public static final int TETHER_ERROR_UNKNOWN_IFACE = 1; 2238 /** {@hide} */ 2239 public static final int TETHER_ERROR_SERVICE_UNAVAIL = 2; 2240 /** {@hide} */ 2241 public static final int TETHER_ERROR_UNSUPPORTED = 3; 2242 /** {@hide} */ 2243 public static final int TETHER_ERROR_UNAVAIL_IFACE = 4; 2244 /** {@hide} */ 2245 public static final int TETHER_ERROR_MASTER_ERROR = 5; 2246 /** {@hide} */ 2247 public static final int TETHER_ERROR_TETHER_IFACE_ERROR = 6; 2248 /** {@hide} */ 2249 public static final int TETHER_ERROR_UNTETHER_IFACE_ERROR = 7; 2250 /** {@hide} */ 2251 public static final int TETHER_ERROR_ENABLE_NAT_ERROR = 8; 2252 /** {@hide} */ 2253 public static final int TETHER_ERROR_DISABLE_NAT_ERROR = 9; 2254 /** {@hide} */ 2255 public static final int TETHER_ERROR_IFACE_CFG_ERROR = 10; 2256 /** {@hide} */ 2257 public static final int TETHER_ERROR_PROVISION_FAILED = 11; 2258 2259 /** 2260 * Get a more detailed error code after a Tethering or Untethering 2261 * request asynchronously failed. 2262 * 2263 * @param iface The name of the interface of interest 2264 * @return error The error code of the last error tethering or untethering the named 2265 * interface 2266 * 2267 * {@hide} 2268 */ 2269 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 2270 public int getLastTetherError(String iface) { 2271 try { 2272 return mService.getLastTetherError(iface); 2273 } catch (RemoteException e) { 2274 throw e.rethrowFromSystemServer(); 2275 } 2276 } 2277 2278 /** 2279 * Report network connectivity status. This is currently used only 2280 * to alter status bar UI. 2281 * <p>This method requires the caller to hold the permission 2282 * {@link android.Manifest.permission#STATUS_BAR}. 2283 * 2284 * @param networkType The type of network you want to report on 2285 * @param percentage The quality of the connection 0 is bad, 100 is good 2286 * {@hide} 2287 */ 2288 public void reportInetCondition(int networkType, int percentage) { 2289 try { 2290 mService.reportInetCondition(networkType, percentage); 2291 } catch (RemoteException e) { 2292 throw e.rethrowFromSystemServer(); 2293 } 2294 } 2295 2296 /** 2297 * Report a problem network to the framework. This provides a hint to the system 2298 * that there might be connectivity problems on this network and may cause 2299 * the framework to re-evaluate network connectivity and/or switch to another 2300 * network. 2301 * 2302 * @param network The {@link Network} the application was attempting to use 2303 * or {@code null} to indicate the current default network. 2304 * @deprecated Use {@link #reportNetworkConnectivity} which allows reporting both 2305 * working and non-working connectivity. 2306 */ 2307 @Deprecated 2308 public void reportBadNetwork(Network network) { 2309 try { 2310 // One of these will be ignored because it matches system's current state. 2311 // The other will trigger the necessary reevaluation. 2312 mService.reportNetworkConnectivity(network, true); 2313 mService.reportNetworkConnectivity(network, false); 2314 } catch (RemoteException e) { 2315 throw e.rethrowFromSystemServer(); 2316 } 2317 } 2318 2319 /** 2320 * Report to the framework whether a network has working connectivity. 2321 * This provides a hint to the system that a particular network is providing 2322 * working connectivity or not. In response the framework may re-evaluate 2323 * the network's connectivity and might take further action thereafter. 2324 * 2325 * @param network The {@link Network} the application was attempting to use 2326 * or {@code null} to indicate the current default network. 2327 * @param hasConnectivity {@code true} if the application was able to successfully access the 2328 * Internet using {@code network} or {@code false} if not. 2329 */ 2330 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2331 try { 2332 mService.reportNetworkConnectivity(network, hasConnectivity); 2333 } catch (RemoteException e) { 2334 throw e.rethrowFromSystemServer(); 2335 } 2336 } 2337 2338 /** 2339 * Set a network-independent global http proxy. This is not normally what you want 2340 * for typical HTTP proxies - they are general network dependent. However if you're 2341 * doing something unusual like general internal filtering this may be useful. On 2342 * a private network where the proxy is not accessible, you may break HTTP using this. 2343 * 2344 * @param p A {@link ProxyInfo} object defining the new global 2345 * HTTP proxy. A {@code null} value will clear the global HTTP proxy. 2346 * @hide 2347 */ 2348 @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL) 2349 public void setGlobalProxy(ProxyInfo p) { 2350 try { 2351 mService.setGlobalProxy(p); 2352 } catch (RemoteException e) { 2353 throw e.rethrowFromSystemServer(); 2354 } 2355 } 2356 2357 /** 2358 * Retrieve any network-independent global HTTP proxy. 2359 * 2360 * @return {@link ProxyInfo} for the current global HTTP proxy or {@code null} 2361 * if no global HTTP proxy is set. 2362 * @hide 2363 */ 2364 public ProxyInfo getGlobalProxy() { 2365 try { 2366 return mService.getGlobalProxy(); 2367 } catch (RemoteException e) { 2368 throw e.rethrowFromSystemServer(); 2369 } 2370 } 2371 2372 /** 2373 * Retrieve the global HTTP proxy, or if no global HTTP proxy is set, a 2374 * network-specific HTTP proxy. If {@code network} is null, the 2375 * network-specific proxy returned is the proxy of the default active 2376 * network. 2377 * 2378 * @return {@link ProxyInfo} for the current global HTTP proxy, or if no 2379 * global HTTP proxy is set, {@code ProxyInfo} for {@code network}, 2380 * or when {@code network} is {@code null}, 2381 * the {@code ProxyInfo} for the default active network. Returns 2382 * {@code null} when no proxy applies or the caller doesn't have 2383 * permission to use {@code network}. 2384 * @hide 2385 */ 2386 public ProxyInfo getProxyForNetwork(Network network) { 2387 try { 2388 return mService.getProxyForNetwork(network); 2389 } catch (RemoteException e) { 2390 throw e.rethrowFromSystemServer(); 2391 } 2392 } 2393 2394 /** 2395 * Get the current default HTTP proxy settings. If a global proxy is set it will be returned, 2396 * otherwise if this process is bound to a {@link Network} using 2397 * {@link #bindProcessToNetwork} then that {@code Network}'s proxy is returned, otherwise 2398 * the default network's proxy is returned. 2399 * 2400 * @return the {@link ProxyInfo} for the current HTTP proxy, or {@code null} if no 2401 * HTTP proxy is active. 2402 */ 2403 public ProxyInfo getDefaultProxy() { 2404 return getProxyForNetwork(getBoundNetworkForProcess()); 2405 } 2406 2407 /** 2408 * Returns true if the hardware supports the given network type 2409 * else it returns false. This doesn't indicate we have coverage 2410 * or are authorized onto a network, just whether or not the 2411 * hardware supports it. For example a GSM phone without a SIM 2412 * should still return {@code true} for mobile data, but a wifi only 2413 * tablet would return {@code false}. 2414 * 2415 * @param networkType The network type we'd like to check 2416 * @return {@code true} if supported, else {@code false} 2417 * 2418 * @hide 2419 */ 2420 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 2421 public boolean isNetworkSupported(int networkType) { 2422 try { 2423 return mService.isNetworkSupported(networkType); 2424 } catch (RemoteException e) { 2425 throw e.rethrowFromSystemServer(); 2426 } 2427 } 2428 2429 /** 2430 * Returns if the currently active data network is metered. A network is 2431 * classified as metered when the user is sensitive to heavy data usage on 2432 * that connection due to monetary costs, data limitations or 2433 * battery/performance issues. You should check this before doing large 2434 * data transfers, and warn the user or delay the operation until another 2435 * network is available. 2436 * 2437 * @return {@code true} if large transfers should be avoided, otherwise 2438 * {@code false}. 2439 */ 2440 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 2441 public boolean isActiveNetworkMetered() { 2442 try { 2443 return mService.isActiveNetworkMetered(); 2444 } catch (RemoteException e) { 2445 throw e.rethrowFromSystemServer(); 2446 } 2447 } 2448 2449 /** 2450 * If the LockdownVpn mechanism is enabled, updates the vpn 2451 * with a reload of its profile. 2452 * 2453 * @return a boolean with {@code} indicating success 2454 * 2455 * <p>This method can only be called by the system UID 2456 * {@hide} 2457 */ 2458 public boolean updateLockdownVpn() { 2459 try { 2460 return mService.updateLockdownVpn(); 2461 } catch (RemoteException e) { 2462 throw e.rethrowFromSystemServer(); 2463 } 2464 } 2465 2466 /** 2467 * Check mobile provisioning. 2468 * 2469 * @param suggestedTimeOutMs, timeout in milliseconds 2470 * 2471 * @return time out that will be used, maybe less that suggestedTimeOutMs 2472 * -1 if an error. 2473 * 2474 * {@hide} 2475 */ 2476 public int checkMobileProvisioning(int suggestedTimeOutMs) { 2477 int timeOutMs = -1; 2478 try { 2479 timeOutMs = mService.checkMobileProvisioning(suggestedTimeOutMs); 2480 } catch (RemoteException e) { 2481 throw e.rethrowFromSystemServer(); 2482 } 2483 return timeOutMs; 2484 } 2485 2486 /** 2487 * Get the mobile provisioning url. 2488 * {@hide} 2489 */ 2490 public String getMobileProvisioningUrl() { 2491 try { 2492 return mService.getMobileProvisioningUrl(); 2493 } catch (RemoteException e) { 2494 throw e.rethrowFromSystemServer(); 2495 } 2496 } 2497 2498 /** 2499 * Set sign in error notification to visible or in visible 2500 * 2501 * @param visible 2502 * @param networkType 2503 * 2504 * {@hide} 2505 * @deprecated Doesn't properly deal with multiple connected networks of the same type. 2506 */ 2507 @Deprecated 2508 public void setProvisioningNotificationVisible(boolean visible, int networkType, 2509 String action) { 2510 try { 2511 mService.setProvisioningNotificationVisible(visible, networkType, action); 2512 } catch (RemoteException e) { 2513 throw e.rethrowFromSystemServer(); 2514 } 2515 } 2516 2517 /** 2518 * Set the value for enabling/disabling airplane mode 2519 * 2520 * @param enable whether to enable airplane mode or not 2521 * 2522 * @hide 2523 */ 2524 @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL) 2525 public void setAirplaneMode(boolean enable) { 2526 try { 2527 mService.setAirplaneMode(enable); 2528 } catch (RemoteException e) { 2529 throw e.rethrowFromSystemServer(); 2530 } 2531 } 2532 2533 /** {@hide} */ 2534 public void registerNetworkFactory(Messenger messenger, String name) { 2535 try { 2536 mService.registerNetworkFactory(messenger, name); 2537 } catch (RemoteException e) { 2538 throw e.rethrowFromSystemServer(); 2539 } 2540 } 2541 2542 /** {@hide} */ 2543 public void unregisterNetworkFactory(Messenger messenger) { 2544 try { 2545 mService.unregisterNetworkFactory(messenger); 2546 } catch (RemoteException e) { 2547 throw e.rethrowFromSystemServer(); 2548 } 2549 } 2550 2551 /** 2552 * @hide 2553 * Register a NetworkAgent with ConnectivityService. 2554 * @return NetID corresponding to NetworkAgent. 2555 */ 2556 public int registerNetworkAgent(Messenger messenger, NetworkInfo ni, LinkProperties lp, 2557 NetworkCapabilities nc, int score, NetworkMisc misc) { 2558 try { 2559 return mService.registerNetworkAgent(messenger, ni, lp, nc, score, misc); 2560 } catch (RemoteException e) { 2561 throw e.rethrowFromSystemServer(); 2562 } 2563 } 2564 2565 /** 2566 * Base class for NetworkRequest callbacks. Used for notifications about network 2567 * changes. Should be extended by applications wanting notifications. 2568 */ 2569 public static class NetworkCallback { 2570 /** 2571 * Called when the framework connects to a new network to evaluate whether it satisfies this 2572 * request. If evaluation succeeds, this callback may be followed by an {@link #onAvailable} 2573 * callback. There is no guarantee that this new network will satisfy any requests, or that 2574 * the network will stay connected for longer than the time necessary to evaluate it. 2575 * <p> 2576 * Most applications <b>should not</b> act on this callback, and should instead use 2577 * {@link #onAvailable}. This callback is intended for use by applications that can assist 2578 * the framework in properly evaluating the network — for example, an application that 2579 * can automatically log in to a captive portal without user intervention. 2580 * 2581 * @param network The {@link Network} of the network that is being evaluated. 2582 * 2583 * @hide 2584 */ 2585 public void onPreCheck(Network network) {} 2586 2587 /** 2588 * Called when the framework connects and has declared a new network ready for use. 2589 * This callback may be called more than once if the {@link Network} that is 2590 * satisfying the request changes. 2591 * 2592 * @param network The {@link Network} of the satisfying network. 2593 */ 2594 public void onAvailable(Network network) {} 2595 2596 /** 2597 * Called when the network is about to be disconnected. Often paired with an 2598 * {@link NetworkCallback#onAvailable} call with the new replacement network 2599 * for graceful handover. This may not be called if we have a hard loss 2600 * (loss without warning). This may be followed by either a 2601 * {@link NetworkCallback#onLost} call or a 2602 * {@link NetworkCallback#onAvailable} call for this network depending 2603 * on whether we lose or regain it. 2604 * 2605 * @param network The {@link Network} that is about to be disconnected. 2606 * @param maxMsToLive The time in ms the framework will attempt to keep the 2607 * network connected. Note that the network may suffer a 2608 * hard loss at any time. 2609 */ 2610 public void onLosing(Network network, int maxMsToLive) {} 2611 2612 /** 2613 * Called when the framework has a hard loss of the network or when the 2614 * graceful failure ends. 2615 * 2616 * @param network The {@link Network} lost. 2617 */ 2618 public void onLost(Network network) {} 2619 2620 /** 2621 * Called if no network is found in the timeout time specified in 2622 * {@link #requestNetwork(NetworkRequest, int, NetworkCallback)} call. This callback is not 2623 * called for the version of {@link #requestNetwork(NetworkRequest, NetworkCallback)} 2624 * without timeout. When this callback is invoked the associated 2625 * {@link NetworkRequest} will have already been removed and released, as if 2626 * {@link #unregisterNetworkCallback(NetworkCallback)} had been called. 2627 */ 2628 public void onUnavailable() {} 2629 2630 /** 2631 * Called when the network the framework connected to for this request 2632 * changes capabilities but still satisfies the stated need. 2633 * 2634 * @param network The {@link Network} whose capabilities have changed. 2635 * @param networkCapabilities The new {@link android.net.NetworkCapabilities} for this network. 2636 */ 2637 public void onCapabilitiesChanged(Network network, 2638 NetworkCapabilities networkCapabilities) {} 2639 2640 /** 2641 * Called when the network the framework connected to for this request 2642 * changes {@link LinkProperties}. 2643 * 2644 * @param network The {@link Network} whose link properties have changed. 2645 * @param linkProperties The new {@link LinkProperties} for this network. 2646 */ 2647 public void onLinkPropertiesChanged(Network network, LinkProperties linkProperties) {} 2648 2649 /** 2650 * Called when the network the framework connected to for this request 2651 * goes into {@link NetworkInfo.DetailedState.SUSPENDED}. 2652 * This generally means that while the TCP connections are still live, 2653 * temporarily network data fails to transfer. Specifically this is used 2654 * on cellular networks to mask temporary outages when driving through 2655 * a tunnel, etc. 2656 * @hide 2657 */ 2658 public void onNetworkSuspended(Network network) {} 2659 2660 /** 2661 * Called when the network the framework connected to for this request 2662 * returns from a {@link NetworkInfo.DetailedState.SUSPENDED} state. 2663 * This should always be preceeded by a matching {@code onNetworkSuspended} 2664 * call. 2665 * @hide 2666 */ 2667 public void onNetworkResumed(Network network) {} 2668 2669 private NetworkRequest networkRequest; 2670 } 2671 2672 private static final int BASE = Protocol.BASE_CONNECTIVITY_MANAGER; 2673 /** @hide */ 2674 public static final int CALLBACK_PRECHECK = BASE + 1; 2675 /** @hide */ 2676 public static final int CALLBACK_AVAILABLE = BASE + 2; 2677 /** @hide arg1 = TTL */ 2678 public static final int CALLBACK_LOSING = BASE + 3; 2679 /** @hide */ 2680 public static final int CALLBACK_LOST = BASE + 4; 2681 /** @hide */ 2682 public static final int CALLBACK_UNAVAIL = BASE + 5; 2683 /** @hide */ 2684 public static final int CALLBACK_CAP_CHANGED = BASE + 6; 2685 /** @hide */ 2686 public static final int CALLBACK_IP_CHANGED = BASE + 7; 2687 /** @hide */ 2688 public static final int CALLBACK_RELEASED = BASE + 8; 2689 // TODO: consider deleting CALLBACK_EXIT and shifting following enum codes down by 1. 2690 /** @hide */ 2691 public static final int CALLBACK_EXIT = BASE + 9; 2692 /** @hide obj = NetworkCapabilities, arg1 = seq number */ 2693 private static final int EXPIRE_LEGACY_REQUEST = BASE + 10; 2694 /** @hide */ 2695 public static final int CALLBACK_SUSPENDED = BASE + 11; 2696 /** @hide */ 2697 public static final int CALLBACK_RESUMED = BASE + 12; 2698 2699 /** @hide */ 2700 public static String getCallbackName(int whichCallback) { 2701 switch (whichCallback) { 2702 case CALLBACK_PRECHECK: return "CALLBACK_PRECHECK"; 2703 case CALLBACK_AVAILABLE: return "CALLBACK_AVAILABLE"; 2704 case CALLBACK_LOSING: return "CALLBACK_LOSING"; 2705 case CALLBACK_LOST: return "CALLBACK_LOST"; 2706 case CALLBACK_UNAVAIL: return "CALLBACK_UNAVAIL"; 2707 case CALLBACK_CAP_CHANGED: return "CALLBACK_CAP_CHANGED"; 2708 case CALLBACK_IP_CHANGED: return "CALLBACK_IP_CHANGED"; 2709 case CALLBACK_RELEASED: return "CALLBACK_RELEASED"; 2710 case CALLBACK_EXIT: return "CALLBACK_EXIT"; 2711 case EXPIRE_LEGACY_REQUEST: return "EXPIRE_LEGACY_REQUEST"; 2712 case CALLBACK_SUSPENDED: return "CALLBACK_SUSPENDED"; 2713 case CALLBACK_RESUMED: return "CALLBACK_RESUMED"; 2714 default: 2715 return Integer.toString(whichCallback); 2716 } 2717 } 2718 2719 private class CallbackHandler extends Handler { 2720 private static final String TAG = "ConnectivityManager.CallbackHandler"; 2721 private static final boolean DBG = false; 2722 2723 CallbackHandler(Looper looper) { 2724 super(looper); 2725 } 2726 2727 CallbackHandler(Handler handler) { 2728 this(handler.getLooper()); 2729 } 2730 2731 @Override 2732 public void handleMessage(Message message) { 2733 NetworkRequest request = getObject(message, NetworkRequest.class); 2734 Network network = getObject(message, Network.class); 2735 if (DBG) { 2736 Log.d(TAG, whatToString(message.what) + " for network " + network); 2737 } 2738 switch (message.what) { 2739 case CALLBACK_PRECHECK: { 2740 NetworkCallback callback = getCallback(request, "PRECHECK"); 2741 if (callback != null) { 2742 callback.onPreCheck(network); 2743 } 2744 break; 2745 } 2746 case CALLBACK_AVAILABLE: { 2747 NetworkCallback callback = getCallback(request, "AVAILABLE"); 2748 if (callback != null) { 2749 callback.onAvailable(network); 2750 } 2751 break; 2752 } 2753 case CALLBACK_LOSING: { 2754 NetworkCallback callback = getCallback(request, "LOSING"); 2755 if (callback != null) { 2756 callback.onLosing(network, message.arg1); 2757 } 2758 break; 2759 } 2760 case CALLBACK_LOST: { 2761 NetworkCallback callback = getCallback(request, "LOST"); 2762 if (callback != null) { 2763 callback.onLost(network); 2764 } 2765 break; 2766 } 2767 case CALLBACK_UNAVAIL: { 2768 NetworkCallback callback = getCallback(request, "UNAVAIL"); 2769 if (callback != null) { 2770 callback.onUnavailable(); 2771 } 2772 break; 2773 } 2774 case CALLBACK_CAP_CHANGED: { 2775 NetworkCallback callback = getCallback(request, "CAP_CHANGED"); 2776 if (callback != null) { 2777 NetworkCapabilities cap = getObject(message, NetworkCapabilities.class); 2778 callback.onCapabilitiesChanged(network, cap); 2779 } 2780 break; 2781 } 2782 case CALLBACK_IP_CHANGED: { 2783 NetworkCallback callback = getCallback(request, "IP_CHANGED"); 2784 if (callback != null) { 2785 LinkProperties lp = getObject(message, LinkProperties.class); 2786 callback.onLinkPropertiesChanged(network, lp); 2787 } 2788 break; 2789 } 2790 case CALLBACK_SUSPENDED: { 2791 NetworkCallback callback = getCallback(request, "SUSPENDED"); 2792 if (callback != null) { 2793 callback.onNetworkSuspended(network); 2794 } 2795 break; 2796 } 2797 case CALLBACK_RESUMED: { 2798 NetworkCallback callback = getCallback(request, "RESUMED"); 2799 if (callback != null) { 2800 callback.onNetworkResumed(network); 2801 } 2802 break; 2803 } 2804 case CALLBACK_RELEASED: { 2805 final NetworkCallback callback; 2806 synchronized(sCallbacks) { 2807 callback = sCallbacks.remove(request); 2808 } 2809 if (callback == null) { 2810 Log.e(TAG, "callback not found for RELEASED message"); 2811 } 2812 break; 2813 } 2814 case CALLBACK_EXIT: { 2815 break; 2816 } 2817 case EXPIRE_LEGACY_REQUEST: { 2818 expireRequest((NetworkCapabilities)message.obj, message.arg1); 2819 break; 2820 } 2821 } 2822 } 2823 2824 private <T> T getObject(Message msg, Class<T> c) { 2825 return (T) msg.getData().getParcelable(c.getSimpleName()); 2826 } 2827 2828 private NetworkCallback getCallback(NetworkRequest req, String name) { 2829 NetworkCallback callback; 2830 synchronized(sCallbacks) { 2831 callback = sCallbacks.get(req); 2832 } 2833 if (callback == null) { 2834 Log.e(TAG, "callback not found for " + name + " message"); 2835 } 2836 return callback; 2837 } 2838 } 2839 2840 private CallbackHandler getDefaultHandler() { 2841 synchronized (sCallbacks) { 2842 if (sCallbackHandler == null) { 2843 sCallbackHandler = new CallbackHandler(ConnectivityThread.getInstanceLooper()); 2844 } 2845 return sCallbackHandler; 2846 } 2847 } 2848 2849 private static final HashMap<NetworkRequest, NetworkCallback> sCallbacks = new HashMap<>(); 2850 private static CallbackHandler sCallbackHandler; 2851 2852 private static final int LISTEN = 1; 2853 private static final int REQUEST = 2; 2854 2855 private NetworkRequest sendRequestForNetwork(NetworkCapabilities need, NetworkCallback callback, 2856 int timeoutMs, int action, int legacyType, CallbackHandler handler) { 2857 if (callback == null) { 2858 throw new IllegalArgumentException("null NetworkCallback"); 2859 } 2860 if (need == null && action != REQUEST) { 2861 throw new IllegalArgumentException("null NetworkCapabilities"); 2862 } 2863 // TODO: throw an exception if callback.networkRequest is not null. 2864 // http://b/20701525 2865 final NetworkRequest request; 2866 try { 2867 synchronized(sCallbacks) { 2868 Messenger messenger = new Messenger(handler); 2869 Binder binder = new Binder(); 2870 if (action == LISTEN) { 2871 request = mService.listenForNetwork(need, messenger, binder); 2872 } else { 2873 request = mService.requestNetwork( 2874 need, messenger, timeoutMs, binder, legacyType); 2875 } 2876 if (request != null) { 2877 sCallbacks.put(request, callback); 2878 } 2879 callback.networkRequest = request; 2880 } 2881 } catch (RemoteException e) { 2882 throw e.rethrowFromSystemServer(); 2883 } 2884 return request; 2885 } 2886 2887 /** 2888 * Helper function to request a network with a particular legacy type. 2889 * 2890 * This is temporarily public @hide so it can be called by system code that uses the 2891 * NetworkRequest API to request networks but relies on CONNECTIVITY_ACTION broadcasts for 2892 * instead network notifications. 2893 * 2894 * TODO: update said system code to rely on NetworkCallbacks and make this method private. 2895 * 2896 * @hide 2897 */ 2898 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback, 2899 int timeoutMs, int legacyType, Handler handler) { 2900 CallbackHandler cbHandler = new CallbackHandler(handler); 2901 NetworkCapabilities nc = request.networkCapabilities; 2902 sendRequestForNetwork(nc, networkCallback, timeoutMs, REQUEST, legacyType, cbHandler); 2903 } 2904 2905 /** 2906 * Request a network to satisfy a set of {@link android.net.NetworkCapabilities}. 2907 * 2908 * This {@link NetworkRequest} will live until released via 2909 * {@link #unregisterNetworkCallback(NetworkCallback)} or the calling application exits. A 2910 * version of the method which takes a timeout is 2911 * {@link #requestNetwork(NetworkRequest, int, NetworkCallback)}. 2912 * Status of the request can be followed by listening to the various 2913 * callbacks described in {@link NetworkCallback}. The {@link Network} 2914 * can be used to direct traffic to the network. 2915 * <p>It is presently unsupported to request a network with mutable 2916 * {@link NetworkCapabilities} such as 2917 * {@link NetworkCapabilities#NET_CAPABILITY_VALIDATED} or 2918 * {@link NetworkCapabilities#NET_CAPABILITY_CAPTIVE_PORTAL} 2919 * as these {@code NetworkCapabilities} represent states that a particular 2920 * network may never attain, and whether a network will attain these states 2921 * is unknown prior to bringing up the network so the framework does not 2922 * know how to go about satisfing a request with these capabilities. 2923 * 2924 * <p>This method requires the caller to hold either the 2925 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 2926 * or the ability to modify system settings as determined by 2927 * {@link android.provider.Settings.System#canWrite}.</p> 2928 * 2929 * @param request {@link NetworkRequest} describing this request. 2930 * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note 2931 * the callback must not be shared - it uniquely specifies this request. 2932 * The callback is invoked on the default internal Handler. 2933 * @throws IllegalArgumentException if {@code request} specifies any mutable 2934 * {@code NetworkCapabilities}. 2935 */ 2936 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback) { 2937 requestNetwork(request, networkCallback, getDefaultHandler()); 2938 } 2939 2940 /** 2941 * Request a network to satisfy a set of {@link android.net.NetworkCapabilities}. 2942 * 2943 * This {@link NetworkRequest} will live until released via 2944 * {@link #unregisterNetworkCallback(NetworkCallback)} or the calling application exits. A 2945 * version of the method which takes a timeout is 2946 * {@link #requestNetwork(NetworkRequest, int, NetworkCallback)}. 2947 * Status of the request can be followed by listening to the various 2948 * callbacks described in {@link NetworkCallback}. The {@link Network} 2949 * can be used to direct traffic to the network. 2950 * <p>It is presently unsupported to request a network with mutable 2951 * {@link NetworkCapabilities} such as 2952 * {@link NetworkCapabilities#NET_CAPABILITY_VALIDATED} or 2953 * {@link NetworkCapabilities#NET_CAPABILITY_CAPTIVE_PORTAL} 2954 * as these {@code NetworkCapabilities} represent states that a particular 2955 * network may never attain, and whether a network will attain these states 2956 * is unknown prior to bringing up the network so the framework does not 2957 * know how to go about satisfing a request with these capabilities. 2958 * 2959 * <p>This method requires the caller to hold either the 2960 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 2961 * or the ability to modify system settings as determined by 2962 * {@link android.provider.Settings.System#canWrite}.</p> 2963 * 2964 * @param request {@link NetworkRequest} describing this request. 2965 * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note 2966 * the callback must not be shared - it uniquely specifies this request. 2967 * @param handler {@link Handler} to specify the thread upon which the callback will be invoked. 2968 * @throws IllegalArgumentException if {@code request} specifies any mutable 2969 * {@code NetworkCapabilities}. 2970 */ 2971 public void requestNetwork( 2972 NetworkRequest request, NetworkCallback networkCallback, Handler handler) { 2973 int legacyType = inferLegacyTypeForNetworkCapabilities(request.networkCapabilities); 2974 CallbackHandler cbHandler = new CallbackHandler(handler); 2975 requestNetwork(request, networkCallback, 0, legacyType, cbHandler); 2976 } 2977 2978 /** 2979 * Request a network to satisfy a set of {@link android.net.NetworkCapabilities}, limited 2980 * by a timeout. 2981 * 2982 * This function behaves identically to the non-timed-out version 2983 * {@link #requestNetwork(NetworkRequest, NetworkCallback)}, but if a suitable network 2984 * is not found within the given time (in milliseconds) the 2985 * {@link NetworkCallback#onUnavailable()} callback is called. The request can still be 2986 * released normally by calling {@link #unregisterNetworkCallback(NetworkCallback)} but does 2987 * not have to be released if timed-out (it is automatically released). Unregistering a 2988 * request that timed out is not an error. 2989 * 2990 * <p>Do not use this method to poll for the existence of specific networks (e.g. with a small 2991 * timeout) - {@link #registerNetworkCallback(NetworkRequest, NetworkCallback)} is provided 2992 * for that purpose. Calling this method will attempt to bring up the requested network. 2993 * 2994 * <p>This method requires the caller to hold either the 2995 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 2996 * or the ability to modify system settings as determined by 2997 * {@link android.provider.Settings.System#canWrite}.</p> 2998 * 2999 * @param request {@link NetworkRequest} describing this request. 3000 * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note 3001 * the callback must not be shared - it uniquely specifies this request. 3002 * @param timeoutMs The time in milliseconds to attempt looking for a suitable network 3003 * before {@link NetworkCallback#onUnavailable()} is called. The timeout must 3004 * be a positive value (i.e. >0). 3005 */ 3006 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback, 3007 int timeoutMs) { 3008 if (timeoutMs <= 0) { 3009 throw new IllegalArgumentException("Non-positive timeoutMs: " + timeoutMs); 3010 } 3011 int legacyType = inferLegacyTypeForNetworkCapabilities(request.networkCapabilities); 3012 requestNetwork(request, networkCallback, timeoutMs, legacyType, getDefaultHandler()); 3013 } 3014 3015 3016 /** 3017 * Request a network to satisfy a set of {@link android.net.NetworkCapabilities}, limited 3018 * by a timeout. 3019 * 3020 * This function behaves identically to the non-timedout version, but if a suitable 3021 * network is not found within the given time (in milliseconds) the 3022 * {@link NetworkCallback#onUnavailable} callback is called. The request can still be 3023 * released normally by calling {@link #unregisterNetworkCallback(NetworkCallback)} but does 3024 * not have to be released if timed-out (it is automatically released). Unregistering a 3025 * request that timed out is not an error. 3026 * 3027 * <p>Do not use this method to poll for the existence of specific networks (e.g. with a small 3028 * timeout) - {@link #registerNetworkCallback(NetworkRequest, NetworkCallback)} is provided 3029 * for that purpose. Calling this method will attempt to bring up the requested network. 3030 * 3031 * <p>This method requires the caller to hold either the 3032 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 3033 * or the ability to modify system settings as determined by 3034 * {@link android.provider.Settings.System#canWrite}.</p> 3035 * 3036 * @param request {@link NetworkRequest} describing this request. 3037 * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note 3038 * the callback must not be shared - it uniquely specifies this request. 3039 * @param handler {@link Handler} to specify the thread upon which the callback will be invoked. 3040 * @param timeoutMs The time in milliseconds to attempt looking for a suitable network 3041 * before {@link NetworkCallback#onUnavailable} is called. 3042 */ 3043 public void requestNetwork(NetworkRequest request, NetworkCallback networkCallback, 3044 Handler handler, int timeoutMs) { 3045 if (timeoutMs <= 0) { 3046 throw new IllegalArgumentException("Non-positive timeoutMs"); 3047 } 3048 int legacyType = inferLegacyTypeForNetworkCapabilities(request.networkCapabilities); 3049 CallbackHandler cbHandler = new CallbackHandler(handler); 3050 requestNetwork(request, networkCallback, timeoutMs, legacyType, cbHandler); 3051 } 3052 3053 /** 3054 * The lookup key for a {@link Network} object included with the intent after 3055 * successfully finding a network for the applications request. Retrieve it with 3056 * {@link android.content.Intent#getParcelableExtra(String)}. 3057 * <p> 3058 * Note that if you intend to invoke {@link Network#openConnection(java.net.URL)} 3059 * then you must get a ConnectivityManager instance before doing so. 3060 */ 3061 public static final String EXTRA_NETWORK = "android.net.extra.NETWORK"; 3062 3063 /** 3064 * The lookup key for a {@link NetworkRequest} object included with the intent after 3065 * successfully finding a network for the applications request. Retrieve it with 3066 * {@link android.content.Intent#getParcelableExtra(String)}. 3067 */ 3068 public static final String EXTRA_NETWORK_REQUEST = "android.net.extra.NETWORK_REQUEST"; 3069 3070 3071 /** 3072 * Request a network to satisfy a set of {@link android.net.NetworkCapabilities}. 3073 * 3074 * This function behaves identically to the version that takes a NetworkCallback, but instead 3075 * of {@link NetworkCallback} a {@link PendingIntent} is used. This means 3076 * the request may outlive the calling application and get called back when a suitable 3077 * network is found. 3078 * <p> 3079 * The operation is an Intent broadcast that goes to a broadcast receiver that 3080 * you registered with {@link Context#registerReceiver} or through the 3081 * <receiver> tag in an AndroidManifest.xml file 3082 * <p> 3083 * The operation Intent is delivered with two extras, a {@link Network} typed 3084 * extra called {@link #EXTRA_NETWORK} and a {@link NetworkRequest} 3085 * typed extra called {@link #EXTRA_NETWORK_REQUEST} containing 3086 * the original requests parameters. It is important to create a new, 3087 * {@link NetworkCallback} based request before completing the processing of the 3088 * Intent to reserve the network or it will be released shortly after the Intent 3089 * is processed. 3090 * <p> 3091 * If there is already a request for this Intent registered (with the equality of 3092 * two Intents defined by {@link Intent#filterEquals}), then it will be removed and 3093 * replaced by this one, effectively releasing the previous {@link NetworkRequest}. 3094 * <p> 3095 * The request may be released normally by calling 3096 * {@link #releaseNetworkRequest(android.app.PendingIntent)}. 3097 * <p>It is presently unsupported to request a network with either 3098 * {@link NetworkCapabilities#NET_CAPABILITY_VALIDATED} or 3099 * {@link NetworkCapabilities#NET_CAPABILITY_CAPTIVE_PORTAL} 3100 * as these {@code NetworkCapabilities} represent states that a particular 3101 * network may never attain, and whether a network will attain these states 3102 * is unknown prior to bringing up the network so the framework does not 3103 * know how to go about satisfing a request with these capabilities. 3104 * 3105 * <p>This method requires the caller to hold either the 3106 * {@link android.Manifest.permission#CHANGE_NETWORK_STATE} permission 3107 * or the ability to modify system settings as determined by 3108 * {@link android.provider.Settings.System#canWrite}.</p> 3109 * 3110 * @param request {@link NetworkRequest} describing this request. 3111 * @param operation Action to perform when the network is available (corresponds 3112 * to the {@link NetworkCallback#onAvailable} call. Typically 3113 * comes from {@link PendingIntent#getBroadcast}. Cannot be null. 3114 * @throws IllegalArgumentException if {@code request} contains either 3115 * {@link NetworkCapabilities#NET_CAPABILITY_VALIDATED} or 3116 * {@link NetworkCapabilities#NET_CAPABILITY_CAPTIVE_PORTAL}. 3117 */ 3118 public void requestNetwork(NetworkRequest request, PendingIntent operation) { 3119 checkPendingIntent(operation); 3120 try { 3121 mService.pendingRequestForNetwork(request.networkCapabilities, operation); 3122 } catch (RemoteException e) { 3123 throw e.rethrowFromSystemServer(); 3124 } 3125 } 3126 3127 /** 3128 * Removes a request made via {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} 3129 * <p> 3130 * This method has the same behavior as 3131 * {@link #unregisterNetworkCallback(android.app.PendingIntent)} with respect to 3132 * releasing network resources and disconnecting. 3133 * 3134 * @param operation A PendingIntent equal (as defined by {@link Intent#filterEquals}) to the 3135 * PendingIntent passed to 3136 * {@link #requestNetwork(NetworkRequest, android.app.PendingIntent)} with the 3137 * corresponding NetworkRequest you'd like to remove. Cannot be null. 3138 */ 3139 public void releaseNetworkRequest(PendingIntent operation) { 3140 checkPendingIntent(operation); 3141 try { 3142 mService.releasePendingNetworkRequest(operation); 3143 } catch (RemoteException e) { 3144 throw e.rethrowFromSystemServer(); 3145 } 3146 } 3147 3148 private void checkPendingIntent(PendingIntent intent) { 3149 if (intent == null) { 3150 throw new IllegalArgumentException("PendingIntent cannot be null."); 3151 } 3152 } 3153 3154 /** 3155 * Registers to receive notifications about all networks which satisfy the given 3156 * {@link NetworkRequest}. The callbacks will continue to be called until 3157 * either the application exits or link #unregisterNetworkCallback(NetworkCallback)} is called. 3158 * 3159 * @param request {@link NetworkRequest} describing this request. 3160 * @param networkCallback The {@link NetworkCallback} that the system will call as suitable 3161 * networks change state. 3162 * The callback is invoked on the default internal Handler. 3163 */ 3164 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 3165 public void registerNetworkCallback(NetworkRequest request, NetworkCallback networkCallback) { 3166 registerNetworkCallback(request, networkCallback, getDefaultHandler()); 3167 } 3168 3169 /** 3170 * Registers to receive notifications about all networks which satisfy the given 3171 * {@link NetworkRequest}. The callbacks will continue to be called until 3172 * either the application exits or link #unregisterNetworkCallback(NetworkCallback)} is called. 3173 * 3174 * @param request {@link NetworkRequest} describing this request. 3175 * @param networkCallback The {@link NetworkCallback} that the system will call as suitable 3176 * networks change state. 3177 * @param handler {@link Handler} to specify the thread upon which the callback will be invoked. 3178 */ 3179 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 3180 public void registerNetworkCallback( 3181 NetworkRequest request, NetworkCallback networkCallback, Handler handler) { 3182 CallbackHandler cbHandler = new CallbackHandler(handler); 3183 NetworkCapabilities nc = request.networkCapabilities; 3184 sendRequestForNetwork(nc, networkCallback, 0, LISTEN, TYPE_NONE, cbHandler); 3185 } 3186 3187 /** 3188 * Registers a PendingIntent to be sent when a network is available which satisfies the given 3189 * {@link NetworkRequest}. 3190 * 3191 * This function behaves identically to the version that takes a NetworkCallback, but instead 3192 * of {@link NetworkCallback} a {@link PendingIntent} is used. This means 3193 * the request may outlive the calling application and get called back when a suitable 3194 * network is found. 3195 * <p> 3196 * The operation is an Intent broadcast that goes to a broadcast receiver that 3197 * you registered with {@link Context#registerReceiver} or through the 3198 * <receiver> tag in an AndroidManifest.xml file 3199 * <p> 3200 * The operation Intent is delivered with two extras, a {@link Network} typed 3201 * extra called {@link #EXTRA_NETWORK} and a {@link NetworkRequest} 3202 * typed extra called {@link #EXTRA_NETWORK_REQUEST} containing 3203 * the original requests parameters. 3204 * <p> 3205 * If there is already a request for this Intent registered (with the equality of 3206 * two Intents defined by {@link Intent#filterEquals}), then it will be removed and 3207 * replaced by this one, effectively releasing the previous {@link NetworkRequest}. 3208 * <p> 3209 * The request may be released normally by calling 3210 * {@link #unregisterNetworkCallback(android.app.PendingIntent)}. 3211 * @param request {@link NetworkRequest} describing this request. 3212 * @param operation Action to perform when the network is available (corresponds 3213 * to the {@link NetworkCallback#onAvailable} call. Typically 3214 * comes from {@link PendingIntent#getBroadcast}. Cannot be null. 3215 */ 3216 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 3217 public void registerNetworkCallback(NetworkRequest request, PendingIntent operation) { 3218 checkPendingIntent(operation); 3219 try { 3220 mService.pendingListenForNetwork(request.networkCapabilities, operation); 3221 } catch (RemoteException e) { 3222 throw e.rethrowFromSystemServer(); 3223 } 3224 } 3225 3226 /** 3227 * Registers to receive notifications about changes in the system default network. The callbacks 3228 * will continue to be called until either the application exits or 3229 * {@link #unregisterNetworkCallback(NetworkCallback)} is called. 3230 * 3231 * @param networkCallback The {@link NetworkCallback} that the system will call as the 3232 * system default network changes. 3233 * The callback is invoked on the default internal Handler. 3234 */ 3235 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 3236 public void registerDefaultNetworkCallback(NetworkCallback networkCallback) { 3237 registerDefaultNetworkCallback(networkCallback, getDefaultHandler()); 3238 } 3239 3240 /** 3241 * Registers to receive notifications about changes in the system default network. The callbacks 3242 * will continue to be called until either the application exits or 3243 * {@link #unregisterNetworkCallback(NetworkCallback)} is called. 3244 * 3245 * @param networkCallback The {@link NetworkCallback} that the system will call as the 3246 * system default network changes. 3247 * @param handler {@link Handler} to specify the thread upon which the callback will be invoked. 3248 */ 3249 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 3250 public void registerDefaultNetworkCallback(NetworkCallback networkCallback, Handler handler) { 3251 // This works because if the NetworkCapabilities are null, 3252 // ConnectivityService takes them from the default request. 3253 // 3254 // Since the capabilities are exactly the same as the default request's 3255 // capabilities, this request is guaranteed, at all times, to be 3256 // satisfied by the same network, if any, that satisfies the default 3257 // request, i.e., the system default network. 3258 CallbackHandler cbHandler = new CallbackHandler(handler); 3259 sendRequestForNetwork(null, networkCallback, 0, REQUEST, TYPE_NONE, cbHandler); 3260 } 3261 3262 /** 3263 * Requests bandwidth update for a given {@link Network} and returns whether the update request 3264 * is accepted by ConnectivityService. Once accepted, ConnectivityService will poll underlying 3265 * network connection for updated bandwidth information. The caller will be notified via 3266 * {@link ConnectivityManager.NetworkCallback} if there is an update. Notice that this 3267 * method assumes that the caller has previously called 3268 * {@link #registerNetworkCallback(NetworkRequest, NetworkCallback)} to listen for network 3269 * changes. 3270 * 3271 * @param network {@link Network} specifying which network you're interested. 3272 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 3273 */ 3274 public boolean requestBandwidthUpdate(Network network) { 3275 try { 3276 return mService.requestBandwidthUpdate(network); 3277 } catch (RemoteException e) { 3278 throw e.rethrowFromSystemServer(); 3279 } 3280 } 3281 3282 /** 3283 * Unregisters callbacks about and possibly releases networks originating from 3284 * {@link #requestNetwork(NetworkRequest, NetworkCallback)} and 3285 * {@link #registerNetworkCallback(NetworkRequest, NetworkCallback)} calls. 3286 * If the given {@code NetworkCallback} had previously been used with 3287 * {@code #requestNetwork}, any networks that had been connected to only to satisfy that request 3288 * will be disconnected. 3289 * 3290 * @param networkCallback The {@link NetworkCallback} used when making the request. 3291 */ 3292 public void unregisterNetworkCallback(NetworkCallback networkCallback) { 3293 if (networkCallback == null || networkCallback.networkRequest == null || 3294 networkCallback.networkRequest.requestId == REQUEST_ID_UNSET) { 3295 throw new IllegalArgumentException("Invalid NetworkCallback"); 3296 } 3297 try { 3298 // CallbackHandler will release callback when receiving CALLBACK_RELEASED. 3299 mService.releaseNetworkRequest(networkCallback.networkRequest); 3300 } catch (RemoteException e) { 3301 throw e.rethrowFromSystemServer(); 3302 } 3303 } 3304 3305 /** 3306 * Unregisters a callback previously registered via 3307 * {@link #registerNetworkCallback(NetworkRequest, android.app.PendingIntent)}. 3308 * 3309 * @param operation A PendingIntent equal (as defined by {@link Intent#filterEquals}) to the 3310 * PendingIntent passed to 3311 * {@link #registerNetworkCallback(NetworkRequest, android.app.PendingIntent)}. 3312 * Cannot be null. 3313 */ 3314 public void unregisterNetworkCallback(PendingIntent operation) { 3315 releaseNetworkRequest(operation); 3316 } 3317 3318 /** 3319 * Informs the system whether it should switch to {@code network} regardless of whether it is 3320 * validated or not. If {@code accept} is true, and the network was explicitly selected by the 3321 * user (e.g., by selecting a Wi-Fi network in the Settings app), then the network will become 3322 * the system default network regardless of any other network that's currently connected. If 3323 * {@code always} is true, then the choice is remembered, so that the next time the user 3324 * connects to this network, the system will switch to it. 3325 * 3326 * @param network The network to accept. 3327 * @param accept Whether to accept the network even if unvalidated. 3328 * @param always Whether to remember this choice in the future. 3329 * 3330 * @hide 3331 */ 3332 @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL) 3333 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 3334 try { 3335 mService.setAcceptUnvalidated(network, accept, always); 3336 } catch (RemoteException e) { 3337 throw e.rethrowFromSystemServer(); 3338 } 3339 } 3340 3341 /** 3342 * Informs the system to penalize {@code network}'s score when it becomes unvalidated. This is 3343 * only meaningful if the system is configured not to penalize such networks, e.g., if the 3344 * {@code config_networkAvoidBadWifi} configuration variable is set to 0 and the {@code 3345 * NETWORK_AVOID_BAD_WIFI setting is unset}. 3346 * 3347 * @param network The network to accept. 3348 * 3349 * @hide 3350 */ 3351 @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL) 3352 public void setAvoidUnvalidated(Network network) { 3353 try { 3354 mService.setAvoidUnvalidated(network); 3355 } catch (RemoteException e) { 3356 throw e.rethrowFromSystemServer(); 3357 } 3358 } 3359 3360 /** 3361 * Requests that the system open the captive portal app on the specified network. 3362 * 3363 * @param network The network to log into. 3364 * 3365 * @hide 3366 */ 3367 @RequiresPermission(android.Manifest.permission.CONNECTIVITY_INTERNAL) 3368 public void startCaptivePortalApp(Network network) { 3369 try { 3370 mService.startCaptivePortalApp(network); 3371 } catch (RemoteException e) { 3372 throw e.rethrowFromSystemServer(); 3373 } 3374 } 3375 3376 /** 3377 * It is acceptable to briefly use multipath data to provide seamless connectivity for 3378 * time-sensitive user-facing operations when the system default network is temporarily 3379 * unresponsive. The amount of data should be limited (less than one megabyte for every call to 3380 * this method), and the operation should be infrequent to ensure that data usage is limited. 3381 * 3382 * An example of such an operation might be a time-sensitive foreground activity, such as a 3383 * voice command, that the user is performing while walking out of range of a Wi-Fi network. 3384 */ 3385 public static final int MULTIPATH_PREFERENCE_HANDOVER = 1 << 0; 3386 3387 /** 3388 * It is acceptable to use small amounts of multipath data on an ongoing basis to provide 3389 * a backup channel for traffic that is primarily going over another network. 3390 * 3391 * An example might be maintaining backup connections to peers or servers for the purpose of 3392 * fast fallback if the default network is temporarily unresponsive or disconnects. The traffic 3393 * on backup paths should be negligible compared to the traffic on the main path. 3394 */ 3395 public static final int MULTIPATH_PREFERENCE_RELIABILITY = 1 << 1; 3396 3397 /** 3398 * It is acceptable to use metered data to improve network latency and performance. 3399 */ 3400 public static final int MULTIPATH_PREFERENCE_PERFORMANCE = 1 << 2; 3401 3402 /** 3403 * Return value to use for unmetered networks. On such networks we currently set all the flags 3404 * to true. 3405 * @hide 3406 */ 3407 public static final int MULTIPATH_PREFERENCE_UNMETERED = 3408 MULTIPATH_PREFERENCE_HANDOVER | 3409 MULTIPATH_PREFERENCE_RELIABILITY | 3410 MULTIPATH_PREFERENCE_PERFORMANCE; 3411 3412 /** @hide */ 3413 @Retention(RetentionPolicy.SOURCE) 3414 @IntDef(flag = true, value = { 3415 MULTIPATH_PREFERENCE_HANDOVER, 3416 MULTIPATH_PREFERENCE_RELIABILITY, 3417 MULTIPATH_PREFERENCE_PERFORMANCE, 3418 }) 3419 public @interface MultipathPreference { 3420 } 3421 3422 /** 3423 * Provides a hint to the calling application on whether it is desirable to use the 3424 * multinetwork APIs (e.g., {@link Network#openConnection}, {@link Network#bindSocket}, etc.) 3425 * for multipath data transfer on this network when it is not the system default network. 3426 * Applications desiring to use multipath network protocols should call this method before 3427 * each such operation. 3428 * 3429 * @param network The network on which the application desires to use multipath data. 3430 * If {@code null}, this method will return the a preference that will generally 3431 * apply to metered networks. 3432 * @return a bitwise OR of zero or more of the {@code MULTIPATH_PREFERENCE_*} constants. 3433 */ 3434 @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) 3435 public @MultipathPreference int getMultipathPreference(Network network) { 3436 try { 3437 return mService.getMultipathPreference(network); 3438 } catch (RemoteException e) { 3439 throw e.rethrowFromSystemServer(); 3440 } 3441 } 3442 3443 /** 3444 * Resets all connectivity manager settings back to factory defaults. 3445 * @hide 3446 */ 3447 public void factoryReset() { 3448 try { 3449 mService.factoryReset(); 3450 } catch (RemoteException e) { 3451 throw e.rethrowFromSystemServer(); 3452 } 3453 } 3454 3455 /** 3456 * Binds the current process to {@code network}. All Sockets created in the future 3457 * (and not explicitly bound via a bound SocketFactory from 3458 * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to 3459 * {@code network}. All host name resolutions will be limited to {@code network} as well. 3460 * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to 3461 * work and all host name resolutions will fail. This is by design so an application doesn't 3462 * accidentally use Sockets it thinks are still bound to a particular {@link Network}. 3463 * To clear binding pass {@code null} for {@code network}. Using individually bound 3464 * Sockets created by Network.getSocketFactory().createSocket() and 3465 * performing network-specific host name resolutions via 3466 * {@link Network#getAllByName Network.getAllByName} is preferred to calling 3467 * {@code bindProcessToNetwork}. 3468 * 3469 * @param network The {@link Network} to bind the current process to, or {@code null} to clear 3470 * the current binding. 3471 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 3472 */ 3473 public boolean bindProcessToNetwork(Network network) { 3474 // Forcing callers to call thru non-static function ensures ConnectivityManager 3475 // instantiated. 3476 return setProcessDefaultNetwork(network); 3477 } 3478 3479 /** 3480 * Binds the current process to {@code network}. All Sockets created in the future 3481 * (and not explicitly bound via a bound SocketFactory from 3482 * {@link Network#getSocketFactory() Network.getSocketFactory()}) will be bound to 3483 * {@code network}. All host name resolutions will be limited to {@code network} as well. 3484 * Note that if {@code network} ever disconnects, all Sockets created in this way will cease to 3485 * work and all host name resolutions will fail. This is by design so an application doesn't 3486 * accidentally use Sockets it thinks are still bound to a particular {@link Network}. 3487 * To clear binding pass {@code null} for {@code network}. Using individually bound 3488 * Sockets created by Network.getSocketFactory().createSocket() and 3489 * performing network-specific host name resolutions via 3490 * {@link Network#getAllByName Network.getAllByName} is preferred to calling 3491 * {@code setProcessDefaultNetwork}. 3492 * 3493 * @param network The {@link Network} to bind the current process to, or {@code null} to clear 3494 * the current binding. 3495 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 3496 * @deprecated This function can throw {@link IllegalStateException}. Use 3497 * {@link #bindProcessToNetwork} instead. {@code bindProcessToNetwork} 3498 * is a direct replacement. 3499 */ 3500 @Deprecated 3501 public static boolean setProcessDefaultNetwork(Network network) { 3502 int netId = (network == null) ? NETID_UNSET : network.netId; 3503 if (netId == NetworkUtils.getBoundNetworkForProcess()) { 3504 return true; 3505 } 3506 if (NetworkUtils.bindProcessToNetwork(netId)) { 3507 // Set HTTP proxy system properties to match network. 3508 // TODO: Deprecate this static method and replace it with a non-static version. 3509 try { 3510 Proxy.setHttpProxySystemProperty(getInstance().getDefaultProxy()); 3511 } catch (SecurityException e) { 3512 // The process doesn't have ACCESS_NETWORK_STATE, so we can't fetch the proxy. 3513 Log.e(TAG, "Can't set proxy properties", e); 3514 } 3515 // Must flush DNS cache as new network may have different DNS resolutions. 3516 InetAddress.clearDnsCache(); 3517 // Must flush socket pool as idle sockets will be bound to previous network and may 3518 // cause subsequent fetches to be performed on old network. 3519 NetworkEventDispatcher.getInstance().onNetworkConfigurationChanged(); 3520 return true; 3521 } else { 3522 return false; 3523 } 3524 } 3525 3526 /** 3527 * Returns the {@link Network} currently bound to this process via 3528 * {@link #bindProcessToNetwork}, or {@code null} if no {@link Network} is explicitly bound. 3529 * 3530 * @return {@code Network} to which this process is bound, or {@code null}. 3531 */ 3532 public Network getBoundNetworkForProcess() { 3533 // Forcing callers to call thru non-static function ensures ConnectivityManager 3534 // instantiated. 3535 return getProcessDefaultNetwork(); 3536 } 3537 3538 /** 3539 * Returns the {@link Network} currently bound to this process via 3540 * {@link #bindProcessToNetwork}, or {@code null} if no {@link Network} is explicitly bound. 3541 * 3542 * @return {@code Network} to which this process is bound, or {@code null}. 3543 * @deprecated Using this function can lead to other functions throwing 3544 * {@link IllegalStateException}. Use {@link #getBoundNetworkForProcess} instead. 3545 * {@code getBoundNetworkForProcess} is a direct replacement. 3546 */ 3547 @Deprecated 3548 public static Network getProcessDefaultNetwork() { 3549 int netId = NetworkUtils.getBoundNetworkForProcess(); 3550 if (netId == NETID_UNSET) return null; 3551 return new Network(netId); 3552 } 3553 3554 private void unsupportedStartingFrom(int version) { 3555 if (Process.myUid() == Process.SYSTEM_UID) { 3556 // The getApplicationInfo() call we make below is not supported in system context, and 3557 // we want to allow the system to use these APIs anyway. 3558 return; 3559 } 3560 3561 if (mContext.getApplicationInfo().targetSdkVersion >= version) { 3562 throw new UnsupportedOperationException( 3563 "This method is not supported in target SDK version " + version + " and above"); 3564 } 3565 } 3566 3567 // Checks whether the calling app can use the legacy routing API (startUsingNetworkFeature, 3568 // stopUsingNetworkFeature, requestRouteToHost), and if not throw UnsupportedOperationException. 3569 // TODO: convert the existing system users (Tethering, GnssLocationProvider) to the new APIs and 3570 // remove these exemptions. Note that this check is not secure, and apps can still access these 3571 // functions by accessing ConnectivityService directly. However, it should be clear that doing 3572 // so is unsupported and may break in the future. http://b/22728205 3573 private void checkLegacyRoutingApiAccess() { 3574 if (mContext.checkCallingOrSelfPermission("com.android.permission.INJECT_OMADM_SETTINGS") 3575 == PackageManager.PERMISSION_GRANTED) { 3576 return; 3577 } 3578 3579 unsupportedStartingFrom(VERSION_CODES.M); 3580 } 3581 3582 /** 3583 * Binds host resolutions performed by this process to {@code network}. 3584 * {@link #bindProcessToNetwork} takes precedence over this setting. 3585 * 3586 * @param network The {@link Network} to bind host resolutions from the current process to, or 3587 * {@code null} to clear the current binding. 3588 * @return {@code true} on success, {@code false} if the {@link Network} is no longer valid. 3589 * @hide 3590 * @deprecated This is strictly for legacy usage to support {@link #startUsingNetworkFeature}. 3591 */ 3592 @Deprecated 3593 public static boolean setProcessDefaultNetworkForHostResolution(Network network) { 3594 return NetworkUtils.bindProcessToNetworkForHostResolution( 3595 network == null ? NETID_UNSET : network.netId); 3596 } 3597 3598 /** 3599 * Device is not restricting metered network activity while application is running on 3600 * background. 3601 */ 3602 public static final int RESTRICT_BACKGROUND_STATUS_DISABLED = 1; 3603 3604 /** 3605 * Device is restricting metered network activity while application is running on background, 3606 * but application is allowed to bypass it. 3607 * <p> 3608 * In this state, application should take action to mitigate metered network access. 3609 * For example, a music streaming application should switch to a low-bandwidth bitrate. 3610 */ 3611 public static final int RESTRICT_BACKGROUND_STATUS_WHITELISTED = 2; 3612 3613 /** 3614 * Device is restricting metered network activity while application is running on background. 3615 * <p> 3616 * In this state, application should not try to use the network while running on background, 3617 * because it would be denied. 3618 */ 3619 public static final int RESTRICT_BACKGROUND_STATUS_ENABLED = 3; 3620 3621 /** 3622 * A change in the background metered network activity restriction has occurred. 3623 * <p> 3624 * Applications should call {@link #getRestrictBackgroundStatus()} to check if the restriction 3625 * applies to them. 3626 * <p> 3627 * This is only sent to registered receivers, not manifest receivers. 3628 */ 3629 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 3630 public static final String ACTION_RESTRICT_BACKGROUND_CHANGED = 3631 "android.net.conn.RESTRICT_BACKGROUND_CHANGED"; 3632 3633 /** @hide */ 3634 @Retention(RetentionPolicy.SOURCE) 3635 @IntDef(flag = false, value = { 3636 RESTRICT_BACKGROUND_STATUS_DISABLED, 3637 RESTRICT_BACKGROUND_STATUS_WHITELISTED, 3638 RESTRICT_BACKGROUND_STATUS_ENABLED, 3639 }) 3640 public @interface RestrictBackgroundStatus { 3641 } 3642 3643 private INetworkPolicyManager getNetworkPolicyManager() { 3644 synchronized (this) { 3645 if (mNPManager != null) { 3646 return mNPManager; 3647 } 3648 mNPManager = INetworkPolicyManager.Stub.asInterface(ServiceManager 3649 .getService(Context.NETWORK_POLICY_SERVICE)); 3650 return mNPManager; 3651 } 3652 } 3653 3654 /** 3655 * Determines if the calling application is subject to metered network restrictions while 3656 * running on background. 3657 * 3658 * @return {@link #RESTRICT_BACKGROUND_STATUS_DISABLED}, 3659 * {@link #RESTRICT_BACKGROUND_STATUS_ENABLED}, 3660 * or {@link #RESTRICT_BACKGROUND_STATUS_WHITELISTED} 3661 */ 3662 public @RestrictBackgroundStatus int getRestrictBackgroundStatus() { 3663 try { 3664 return getNetworkPolicyManager().getRestrictBackgroundByCaller(); 3665 } catch (RemoteException e) { 3666 throw e.rethrowFromSystemServer(); 3667 } 3668 } 3669 3670 /** 3671 * A holder class for debug info (mapping CALLBACK values to field names). This is stored 3672 * in a holder for two reasons: 3673 * 1) The reflection necessary to establish the map can't be run at compile-time. Thus, this 3674 * code will make the enclosing class not compile-time initializeable, deferring its 3675 * initialization to zygote startup. This leads to dirty (but shared) memory. 3676 * As this is debug info, use a holder that isn't initialized by default. This way the map 3677 * will be created on demand, while ConnectivityManager can be compile-time initialized. 3678 * 2) Static initialization is still preferred for its strong thread safety guarantees without 3679 * requiring a lock. 3680 */ 3681 private static class NoPreloadHolder { 3682 public static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 3683 new Class[]{ConnectivityManager.class}, new String[]{"CALLBACK_"}); 3684 } 3685 3686 static { 3687 // When debug is enabled, aggressively initialize the holder by touching the field (which 3688 // will guarantee static initialization). 3689 if (CallbackHandler.DBG) { 3690 Object dummy = NoPreloadHolder.sMagicDecoderRing; 3691 } 3692 } 3693 3694 private static final String whatToString(int what) { 3695 return NoPreloadHolder.sMagicDecoderRing.get(what, Integer.toString(what)); 3696 } 3697 } 3698
