603 lines
23 KiB
Java
603 lines
23 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.net;
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import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
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import android.annotation.CallbackExecutor;
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import android.annotation.IntDef;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.annotation.RequiresFeature;
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import android.annotation.RequiresPermission;
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import android.annotation.SystemApi;
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import android.annotation.SystemService;
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import android.compat.annotation.UnsupportedAppUsage;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.os.Build;
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import android.os.RemoteException;
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import com.android.internal.annotations.GuardedBy;
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import com.android.internal.os.BackgroundThread;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.util.ArrayList;
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import java.util.Objects;
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import java.util.concurrent.Executor;
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import java.util.function.BiConsumer;
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/**
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* A class that manages and configures Ethernet interfaces.
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*
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* @hide
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*/
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@SystemApi
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@SystemService(Context.ETHERNET_SERVICE)
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public class EthernetManager {
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private static final String TAG = "EthernetManager";
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private final IEthernetManager mService;
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@GuardedBy("mListeners")
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private final ArrayList<ListenerInfo> mListeners = new ArrayList<>();
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private final IEthernetServiceListener.Stub mServiceListener =
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new IEthernetServiceListener.Stub() {
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@Override
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public void onInterfaceStateChanged(String iface, int state, int role,
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IpConfiguration configuration) {
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synchronized (mListeners) {
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for (ListenerInfo li : mListeners) {
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li.executor.execute(() ->
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li.listener.onInterfaceStateChanged(iface, state, role,
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configuration));
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}
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}
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}
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};
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private static class ListenerInfo {
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@NonNull
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public final Executor executor;
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@NonNull
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public final InterfaceStateListener listener;
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private ListenerInfo(@NonNull Executor executor, @NonNull InterfaceStateListener listener) {
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this.executor = executor;
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this.listener = listener;
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}
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}
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/**
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* The interface is absent.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public static final int STATE_ABSENT = 0;
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/**
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* The interface is present but link is down.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public static final int STATE_LINK_DOWN = 1;
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/**
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* The interface is present and link is up.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public static final int STATE_LINK_UP = 2;
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/** @hide */
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@IntDef(prefix = "STATE_", value = {STATE_ABSENT, STATE_LINK_DOWN, STATE_LINK_UP})
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@Retention(RetentionPolicy.SOURCE)
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public @interface InterfaceState {}
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/**
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* The interface currently does not have any specific role.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public static final int ROLE_NONE = 0;
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/**
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* The interface is in client mode (e.g., connected to the Internet).
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public static final int ROLE_CLIENT = 1;
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/**
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* Ethernet interface is in server mode (e.g., providing Internet access to tethered devices).
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public static final int ROLE_SERVER = 2;
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/** @hide */
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@IntDef(prefix = "ROLE_", value = {ROLE_NONE, ROLE_CLIENT, ROLE_SERVER})
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@Retention(RetentionPolicy.SOURCE)
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public @interface Role {}
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/**
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* A listener that receives notifications about the state of Ethernet interfaces on the system.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public interface InterfaceStateListener {
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/**
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* Called when an Ethernet interface changes state.
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*
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* @param iface the name of the interface.
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* @param state the current state of the interface, or {@link #STATE_ABSENT} if the
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* interface was removed.
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* @param role whether the interface is in client mode or server mode.
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* @param configuration the current IP configuration of the interface.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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void onInterfaceStateChanged(@NonNull String iface, @InterfaceState int state,
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@Role int role, @Nullable IpConfiguration configuration);
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}
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/**
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* A listener interface to receive notification on changes in Ethernet.
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* This has never been a supported API. Use {@link InterfaceStateListener} instead.
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* @hide
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*/
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public interface Listener extends InterfaceStateListener {
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/**
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* Called when Ethernet port's availability is changed.
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* @param iface Ethernet interface name
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* @param isAvailable {@code true} if Ethernet port exists.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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void onAvailabilityChanged(String iface, boolean isAvailable);
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/** Default implementation for backwards compatibility. Only calls the legacy listener. */
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default void onInterfaceStateChanged(@NonNull String iface, @InterfaceState int state,
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@Role int role, @Nullable IpConfiguration configuration) {
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onAvailabilityChanged(iface, (state >= STATE_LINK_UP));
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}
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}
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/**
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* Create a new EthernetManager instance.
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* Applications will almost always want to use
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* {@link android.content.Context#getSystemService Context.getSystemService()} to retrieve
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* the standard {@link android.content.Context#ETHERNET_SERVICE Context.ETHERNET_SERVICE}.
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* @hide
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*/
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public EthernetManager(Context context, IEthernetManager service) {
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mService = service;
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}
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/**
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* Get Ethernet configuration.
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* @return the Ethernet Configuration, contained in {@link IpConfiguration}.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public IpConfiguration getConfiguration(String iface) {
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try {
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return mService.getConfiguration(iface);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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/**
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* Set Ethernet configuration.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public void setConfiguration(@NonNull String iface, @NonNull IpConfiguration config) {
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try {
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mService.setConfiguration(iface, config);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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/**
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* Indicates whether the system currently has one or more Ethernet interfaces.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public boolean isAvailable() {
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return getAvailableInterfaces().length > 0;
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}
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/**
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* Indicates whether the system has given interface.
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*
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* @param iface Ethernet interface name
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public boolean isAvailable(String iface) {
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try {
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return mService.isAvailable(iface);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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/**
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* Adds a listener.
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* This has never been a supported API. Use {@link #addInterfaceStateListener} instead.
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*
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* @param listener A {@link Listener} to add.
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* @throws IllegalArgumentException If the listener is null.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public void addListener(@NonNull Listener listener) {
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addListener(listener, BackgroundThread.getExecutor());
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}
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/**
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* Adds a listener.
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* This has never been a supported API. Use {@link #addInterfaceStateListener} instead.
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*
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* @param listener A {@link Listener} to add.
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* @param executor Executor to run callbacks on.
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* @throws IllegalArgumentException If the listener or executor is null.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public void addListener(@NonNull Listener listener, @NonNull Executor executor) {
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addInterfaceStateListener(executor, listener);
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}
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/**
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* Listen to changes in the state of Ethernet interfaces.
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*
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* Adds a listener to receive notification for any state change of all existing Ethernet
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* interfaces.
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* <p>{@link Listener#onInterfaceStateChanged} will be triggered immediately for all
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* existing interfaces upon adding a listener. The same method will be called on the
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* listener every time any of the interface changes state. In particular, if an
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* interface is removed, it will be called with state {@link #STATE_ABSENT}.
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* <p>Use {@link #removeInterfaceStateListener} with the same object to stop listening.
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*
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* @param executor Executor to run callbacks on.
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* @param listener A {@link Listener} to add.
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* @hide
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*/
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@RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
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@SystemApi(client = MODULE_LIBRARIES)
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public void addInterfaceStateListener(@NonNull Executor executor,
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@NonNull InterfaceStateListener listener) {
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if (listener == null || executor == null) {
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throw new NullPointerException("listener and executor must not be null");
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}
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synchronized (mListeners) {
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mListeners.add(new ListenerInfo(executor, listener));
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if (mListeners.size() == 1) {
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try {
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mService.addListener(mServiceListener);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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}
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}
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/**
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* Returns an array of available Ethernet interface names.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public String[] getAvailableInterfaces() {
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try {
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return mService.getAvailableInterfaces();
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} catch (RemoteException e) {
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throw e.rethrowAsRuntimeException();
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}
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}
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/**
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* Removes a listener.
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*
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* @param listener A {@link Listener} to remove.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public void removeInterfaceStateListener(@NonNull InterfaceStateListener listener) {
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Objects.requireNonNull(listener);
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synchronized (mListeners) {
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mListeners.removeIf(l -> l.listener == listener);
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if (mListeners.isEmpty()) {
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try {
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mService.removeListener(mServiceListener);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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}
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}
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/**
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* Removes a listener.
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* This has never been a supported API. Use {@link #removeInterfaceStateListener} instead.
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* @param listener A {@link Listener} to remove.
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public void removeListener(@NonNull Listener listener) {
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if (listener == null) {
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throw new IllegalArgumentException("listener must not be null");
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}
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removeInterfaceStateListener(listener);
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}
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/**
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* Whether to treat interfaces created by {@link TestNetworkManager#createTapInterface}
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* as Ethernet interfaces. The effects of this method apply to any test interfaces that are
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* already present on the system.
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* @hide
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*/
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@SystemApi(client = MODULE_LIBRARIES)
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public void setIncludeTestInterfaces(boolean include) {
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try {
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mService.setIncludeTestInterfaces(include);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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/**
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* A request for a tethered interface.
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*/
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public static class TetheredInterfaceRequest {
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private final IEthernetManager mService;
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private final ITetheredInterfaceCallback mCb;
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private TetheredInterfaceRequest(@NonNull IEthernetManager service,
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@NonNull ITetheredInterfaceCallback cb) {
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this.mService = service;
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this.mCb = cb;
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}
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/**
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* Release the request, causing the interface to revert back from tethering mode if there
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* is no other requestor.
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*/
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public void release() {
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try {
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mService.releaseTetheredInterface(mCb);
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} catch (RemoteException e) {
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e.rethrowFromSystemServer();
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}
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}
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}
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/**
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* Callback for {@link #requestTetheredInterface(TetheredInterfaceCallback)}.
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*/
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public interface TetheredInterfaceCallback {
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/**
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* Called when the tethered interface is available.
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* @param iface The name of the interface.
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*/
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void onAvailable(@NonNull String iface);
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/**
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* Called when the tethered interface is now unavailable.
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*/
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void onUnavailable();
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}
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/**
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* Request a tethered interface in tethering mode.
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*
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* <p>When this method is called and there is at least one ethernet interface available, the
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* system will designate one to act as a tethered interface. If there is already a tethered
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* interface, the existing interface will be used.
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* @param callback A callback to be called once the request has been fulfilled.
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*/
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@RequiresPermission(anyOf = {
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android.Manifest.permission.NETWORK_STACK,
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android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK
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})
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@NonNull
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public TetheredInterfaceRequest requestTetheredInterface(@NonNull final Executor executor,
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@NonNull final TetheredInterfaceCallback callback) {
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Objects.requireNonNull(callback, "Callback must be non-null");
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Objects.requireNonNull(executor, "Executor must be non-null");
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final ITetheredInterfaceCallback cbInternal = new ITetheredInterfaceCallback.Stub() {
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@Override
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public void onAvailable(String iface) {
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executor.execute(() -> callback.onAvailable(iface));
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}
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@Override
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public void onUnavailable() {
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executor.execute(() -> callback.onUnavailable());
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}
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};
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try {
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mService.requestTetheredInterface(cbInternal);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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return new TetheredInterfaceRequest(mService, cbInternal);
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}
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private static final class InternalNetworkManagementListener
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extends IEthernetNetworkManagementListener.Stub {
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@NonNull
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private final Executor mExecutor;
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@NonNull
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private final BiConsumer<Network, EthernetNetworkManagementException> mListener;
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InternalNetworkManagementListener(
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@NonNull final Executor executor,
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@NonNull final BiConsumer<Network, EthernetNetworkManagementException> listener) {
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Objects.requireNonNull(executor, "Pass a non-null executor");
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Objects.requireNonNull(listener, "Pass a non-null listener");
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mExecutor = executor;
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mListener = listener;
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}
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@Override
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public void onComplete(
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@Nullable final Network network,
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@Nullable final EthernetNetworkManagementException e) {
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mExecutor.execute(() -> mListener.accept(network, e));
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}
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}
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private InternalNetworkManagementListener getInternalNetworkManagementListener(
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@Nullable final Executor executor,
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@Nullable final BiConsumer<Network, EthernetNetworkManagementException> listener) {
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if (null != listener) {
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Objects.requireNonNull(executor, "Pass a non-null executor, or a null listener");
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}
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final InternalNetworkManagementListener proxy;
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if (null == listener) {
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proxy = null;
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} else {
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proxy = new InternalNetworkManagementListener(executor, listener);
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}
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return proxy;
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}
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/**
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* Updates the configuration of an automotive device's ethernet network.
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*
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* The {@link EthernetNetworkUpdateRequest} {@code request} argument describes how to update the
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* configuration for this network.
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* Use {@link StaticIpConfiguration.Builder} to build a {@code StaticIpConfiguration} object for
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* this network to put inside the {@code request}.
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* Similarly, use {@link NetworkCapabilities.Builder} to build a {@code NetworkCapabilities}
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* object for this network to put inside the {@code request}.
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*
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* If non-null, the listener will be called exactly once after this is called, unless
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* a synchronous exception was thrown.
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*
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* @param iface the name of the interface to act upon.
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* @param request the {@link EthernetNetworkUpdateRequest} used to set an ethernet network's
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* {@link StaticIpConfiguration} and {@link NetworkCapabilities} values.
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* @param executor an {@link Executor} to execute the listener on. Optional if listener is null.
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* @param listener an optional {@link BiConsumer} to listen for completion of the operation.
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* @throws SecurityException if the process doesn't hold
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* {@link android.Manifest.permission.MANAGE_ETHERNET_NETWORKS}.
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* @throws UnsupportedOperationException if called on a non-automotive device or on an
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* unsupported interface.
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* @hide
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*/
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@SystemApi
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@RequiresPermission(anyOf = {
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NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
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android.Manifest.permission.NETWORK_STACK,
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android.Manifest.permission.MANAGE_ETHERNET_NETWORKS})
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public void updateConfiguration(
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@NonNull String iface,
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@NonNull EthernetNetworkUpdateRequest request,
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@Nullable @CallbackExecutor Executor executor,
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@Nullable BiConsumer<Network, EthernetNetworkManagementException> listener) {
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Objects.requireNonNull(iface, "iface must be non-null");
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Objects.requireNonNull(request, "request must be non-null");
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final InternalNetworkManagementListener proxy = getInternalNetworkManagementListener(
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executor, listener);
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try {
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mService.updateConfiguration(iface, request, proxy);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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/**
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* Set an ethernet network's link state up.
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*
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* When the link is successfully turned up, the listener will be called with the resulting
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* network. If any error or unexpected condition happens while the system tries to turn the
|
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* interface up, the listener will be called with an appropriate exception.
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* The listener is guaranteed to be called exactly once for each call to this method, but this
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* may take an unbounded amount of time depending on the actual network conditions.
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*
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* @param iface the name of the interface to act upon.
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* @param executor an {@link Executor} to execute the listener on. Optional if listener is null.
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* @param listener an optional {@link BiConsumer} to listen for completion of the operation.
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* @throws SecurityException if the process doesn't hold
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* {@link android.Manifest.permission.MANAGE_ETHERNET_NETWORKS}.
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* @throws UnsupportedOperationException if called on a non-automotive device.
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* @hide
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*/
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@SystemApi
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@RequiresPermission(anyOf = {
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NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
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android.Manifest.permission.NETWORK_STACK,
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android.Manifest.permission.MANAGE_ETHERNET_NETWORKS})
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@RequiresFeature(PackageManager.FEATURE_AUTOMOTIVE)
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public void connectNetwork(
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@NonNull String iface,
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@Nullable @CallbackExecutor Executor executor,
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@Nullable BiConsumer<Network, EthernetNetworkManagementException> listener) {
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Objects.requireNonNull(iface, "iface must be non-null");
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final InternalNetworkManagementListener proxy = getInternalNetworkManagementListener(
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executor, listener);
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try {
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mService.connectNetwork(iface, proxy);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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|
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/**
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* Set an ethernet network's link state down.
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*
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* When the link is successfully turned down, the listener will be called with the network that
|
|
* was torn down, if any. If any error or unexpected condition happens while the system tries to
|
|
* turn the interface down, the listener will be called with an appropriate exception.
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|
* The listener is guaranteed to be called exactly once for each call to this method.
|
|
*
|
|
* @param iface the name of the interface to act upon.
|
|
* @param executor an {@link Executor} to execute the listener on. Optional if listener is null.
|
|
* @param listener an optional {@link BiConsumer} to listen for completion of the operation.
|
|
* @throws SecurityException if the process doesn't hold
|
|
* {@link android.Manifest.permission.MANAGE_ETHERNET_NETWORKS}.
|
|
* @throws UnsupportedOperationException if called on a non-automotive device.
|
|
* @hide
|
|
*/
|
|
@SystemApi
|
|
@RequiresPermission(anyOf = {
|
|
NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
|
|
android.Manifest.permission.NETWORK_STACK,
|
|
android.Manifest.permission.MANAGE_ETHERNET_NETWORKS})
|
|
@RequiresFeature(PackageManager.FEATURE_AUTOMOTIVE)
|
|
public void disconnectNetwork(
|
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@NonNull String iface,
|
|
@Nullable @CallbackExecutor Executor executor,
|
|
@Nullable BiConsumer<Network, EthernetNetworkManagementException> listener) {
|
|
Objects.requireNonNull(iface, "iface must be non-null");
|
|
final InternalNetworkManagementListener proxy = getInternalNetworkManagementListener(
|
|
executor, listener);
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|
try {
|
|
mService.disconnectNetwork(iface, proxy);
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|
} catch (RemoteException e) {
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|
throw e.rethrowFromSystemServer();
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|
}
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|
}
|
|
}
|