| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.net; |
| |
| import android.content.Context; |
| import android.os.Handler; |
| import android.os.Messenger; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import com.android.internal.util.Preconditions; |
| |
| /** |
| * Interface to control and observe state of a specific network, hiding |
| * network-specific details from {@link ConnectivityManager}. Surfaces events |
| * through the registered {@link Handler} to enable {@link ConnectivityManager} |
| * to respond to state changes over time. |
| * |
| * @hide |
| */ |
| public abstract class BaseNetworkStateTracker implements NetworkStateTracker { |
| // TODO: better document threading expectations |
| // TODO: migrate to make NetworkStateTracker abstract class |
| |
| public static final String PROP_TCP_BUFFER_UNKNOWN = "net.tcp.buffersize.unknown"; |
| public static final String PROP_TCP_BUFFER_WIFI = "net.tcp.buffersize.wifi"; |
| |
| protected Context mContext; |
| private Handler mTarget; |
| |
| protected NetworkInfo mNetworkInfo; |
| protected LinkProperties mLinkProperties; |
| protected LinkCapabilities mLinkCapabilities; |
| |
| private AtomicBoolean mTeardownRequested = new AtomicBoolean(false); |
| private AtomicBoolean mPrivateDnsRouteSet = new AtomicBoolean(false); |
| private AtomicBoolean mDefaultRouteSet = new AtomicBoolean(false); |
| |
| public BaseNetworkStateTracker(int networkType) { |
| mNetworkInfo = new NetworkInfo( |
| networkType, -1, ConnectivityManager.getNetworkTypeName(networkType), null); |
| mLinkProperties = new LinkProperties(); |
| mLinkCapabilities = new LinkCapabilities(); |
| } |
| |
| protected BaseNetworkStateTracker() { |
| // By default, let the sub classes construct everything |
| } |
| |
| @Deprecated |
| protected Handler getTargetHandler() { |
| return mTarget; |
| } |
| |
| protected final void dispatchStateChanged() { |
| // TODO: include snapshot of other fields when sending |
| mTarget.obtainMessage(EVENT_STATE_CHANGED, getNetworkInfo()).sendToTarget(); |
| } |
| |
| protected final void dispatchConfigurationChanged() { |
| // TODO: include snapshot of other fields when sending |
| mTarget.obtainMessage(EVENT_CONFIGURATION_CHANGED, getNetworkInfo()).sendToTarget(); |
| } |
| |
| @Override |
| public void startMonitoring(Context context, Handler target) { |
| mContext = Preconditions.checkNotNull(context); |
| mTarget = Preconditions.checkNotNull(target); |
| startMonitoringInternal(); |
| } |
| |
| protected void startMonitoringInternal() { |
| |
| } |
| |
| @Override |
| public NetworkInfo getNetworkInfo() { |
| return new NetworkInfo(mNetworkInfo); |
| } |
| |
| @Override |
| public LinkProperties getLinkProperties() { |
| return new LinkProperties(mLinkProperties); |
| } |
| |
| @Override |
| public LinkCapabilities getLinkCapabilities() { |
| return new LinkCapabilities(mLinkCapabilities); |
| } |
| |
| @Override |
| public LinkQualityInfo getLinkQualityInfo() { |
| return null; |
| } |
| |
| @Override |
| public void captivePortalCheckCompleted(boolean isCaptivePortal) { |
| // not implemented |
| } |
| |
| @Override |
| public boolean setRadio(boolean turnOn) { |
| // Base tracker doesn't handle radios |
| return true; |
| } |
| |
| @Override |
| public boolean isAvailable() { |
| return mNetworkInfo.isAvailable(); |
| } |
| |
| @Override |
| public void setUserDataEnable(boolean enabled) { |
| // Base tracker doesn't handle enabled flags |
| } |
| |
| @Override |
| public void setPolicyDataEnable(boolean enabled) { |
| // Base tracker doesn't handle enabled flags |
| } |
| |
| @Override |
| public boolean isPrivateDnsRouteSet() { |
| return mPrivateDnsRouteSet.get(); |
| } |
| |
| @Override |
| public void privateDnsRouteSet(boolean enabled) { |
| mPrivateDnsRouteSet.set(enabled); |
| } |
| |
| @Override |
| public boolean isDefaultRouteSet() { |
| return mDefaultRouteSet.get(); |
| } |
| |
| @Override |
| public void defaultRouteSet(boolean enabled) { |
| mDefaultRouteSet.set(enabled); |
| } |
| |
| @Override |
| public boolean isTeardownRequested() { |
| return mTeardownRequested.get(); |
| } |
| |
| @Override |
| public void setTeardownRequested(boolean isRequested) { |
| mTeardownRequested.set(isRequested); |
| } |
| |
| @Override |
| public void setDependencyMet(boolean met) { |
| // Base tracker doesn't handle dependencies |
| } |
| |
| @Override |
| public void addStackedLink(LinkProperties link) { |
| mLinkProperties.addStackedLink(link); |
| } |
| |
| @Override |
| public void removeStackedLink(LinkProperties link) { |
| mLinkProperties.removeStackedLink(link); |
| } |
| |
| @Override |
| public void supplyMessenger(Messenger messenger) { |
| // not supported on this network |
| } |
| |
| @Override |
| public String getNetworkInterfaceName() { |
| if (mLinkProperties != null) { |
| return mLinkProperties.getInterfaceName(); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public void startSampling(SamplingDataTracker.SamplingSnapshot s) { |
| // nothing to do |
| } |
| |
| @Override |
| public void stopSampling(SamplingDataTracker.SamplingSnapshot s) { |
| // nothing to do |
| } |
| } |